svn-gvsig-desktop / trunk / libraries / libGDBMS / src / main / java / com / hardcode / gdbms / engine / data / DataSourceFactory.java @ 4186
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package com.hardcode.gdbms.engine.data; |
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import java.io.ByteArrayInputStream; |
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import java.io.File; |
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import java.io.IOException; |
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import java.sql.Connection; |
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import java.sql.SQLException; |
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import java.sql.Statement; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import com.hardcode.driverManager.Driver; |
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import com.hardcode.driverManager.DriverLoadException; |
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import com.hardcode.driverManager.DriverManager; |
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import com.hardcode.driverManager.WriterManager; |
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import com.hardcode.gdbms.engine.data.db.DBDataSource; |
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import com.hardcode.gdbms.engine.data.db.DBDataSourceFactory; |
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import com.hardcode.gdbms.engine.data.db.DBQuerySourceInfo; |
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import com.hardcode.gdbms.engine.data.db.DBSourceInfo; |
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import com.hardcode.gdbms.engine.data.db.DBTableSourceInfo; |
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import com.hardcode.gdbms.engine.data.db.SpatialDBTableSourceInfo; |
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import com.hardcode.gdbms.engine.data.driver.AlphanumericDBDriver; |
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import com.hardcode.gdbms.engine.data.driver.DBDriver; |
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import com.hardcode.gdbms.engine.data.driver.DriverException; |
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import com.hardcode.gdbms.engine.data.driver.FileDriver; |
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import com.hardcode.gdbms.engine.data.driver.GDBMSDriver; |
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import com.hardcode.gdbms.engine.data.driver.ObjectDriver; |
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import com.hardcode.gdbms.engine.data.file.FileCreationSourceInfo; |
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import com.hardcode.gdbms.engine.data.file.FileDataSource; |
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import com.hardcode.gdbms.engine.data.file.FileDataSourceFactory; |
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import com.hardcode.gdbms.engine.data.file.FileSourceInfo; |
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import com.hardcode.gdbms.engine.data.object.ObjectDataSource; |
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import com.hardcode.gdbms.engine.data.object.ObjectDataSourceFactory; |
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import com.hardcode.gdbms.engine.data.object.ObjectSourceInfo; |
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import com.hardcode.gdbms.engine.data.persistence.DataSourceLayerMemento; |
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import com.hardcode.gdbms.engine.data.persistence.Memento; |
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import com.hardcode.gdbms.engine.data.persistence.OperationLayerMemento; |
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import com.hardcode.gdbms.engine.instruction.Adapter; |
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import com.hardcode.gdbms.engine.instruction.ColRefAdapter; |
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import com.hardcode.gdbms.engine.instruction.CustomAdapter; |
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import com.hardcode.gdbms.engine.instruction.EvaluationException; |
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import com.hardcode.gdbms.engine.instruction.SelectAdapter; |
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import com.hardcode.gdbms.engine.instruction.SemanticException; |
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import com.hardcode.gdbms.engine.instruction.TableRefAdapter; |
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import com.hardcode.gdbms.engine.instruction.UnionAdapter; |
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import com.hardcode.gdbms.engine.instruction.Utilities; |
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import com.hardcode.gdbms.engine.strategies.OperationDataSource; |
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import com.hardcode.gdbms.engine.strategies.Strategy; |
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import com.hardcode.gdbms.engine.strategies.StrategyManager; |
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import com.hardcode.gdbms.parser.Node; |
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import com.hardcode.gdbms.parser.ParseException; |
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import com.hardcode.gdbms.parser.SQLEngine; |
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import com.hardcode.gdbms.parser.SimpleNode; |
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/**
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* Clase factor?a de DataSources. Contiene m?todos para registrar las fuentes de
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* datos (addXXXDataSource) y para obtener los DataSource's asociados a estas
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* createRandomDataSource. Adem?s proporciona un m?todo para ejecutar consultas
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* SQL a partir de la instrucci?n como cadena o a partir de la instrucci?n como
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* ?rbol de adaptadores
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*
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* @author Fernando Gonz?lez Cort?s
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*/
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public class DataSourceFactory { |
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public final static int MANUAL_OPENING = 0; |
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public final static int AUTOMATIC_OPENING = 1; |
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public final static int DATA_WARE_DIRECT_MODE = 0; |
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public final static int DATA_WARE_COHERENT_ROW_ORDER = 1; |
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final static int DEFAULT_DELAY = 5000; |
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/**
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* Asocia los nombres de las tablas con la informaci?n del origen de datos
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*/
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private HashMap tableSource = new HashMap(); |
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/** Associates a name with the operation layer DataSource with that name */
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private HashMap nameOperationDataSource = new HashMap(); |
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/**
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* Asocia los nombres de los or?genes de datos de base de datos con el
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* nombre de la tabla en el sistema de gesti?n original
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*/
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private HashMap nameTable = new HashMap(); |
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private HashMap sourceInfoServerViewInfo = new HashMap(); |
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private DriverManager dm; |
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private ModuleSupport ms = new ModuleSupport(); |
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private long delay = DEFAULT_DELAY; |
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private boolean delegating = false; |
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private File tempDir = new File("."); |
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private WriterManager wm;
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/**
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* Get's a unique id in the tableSource and nameOperationDataSource key sets
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*
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* @return unique id
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*/
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private String getUID() { |
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String name = "gdbms" + System.currentTimeMillis(); |
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while (tableSource.get(name) != null) { |
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name = "gdbms" + System.currentTimeMillis(); |
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} |
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return name;
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} |
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/**
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* Removes all associations between names and data sources of any layer.
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*/
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public void removeAllDataSources() { |
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tableSource.clear(); |
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nameOperationDataSource.clear(); |
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} |
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/**
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* Removes the association between the name and the data sources
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*
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* @param ds
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* Name of the data source to remove
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*
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* @throws DriverException
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* If ds is a database data source it's associated view must be
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* deleted. Thrown if could not be deleted.
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* @throws RuntimeException
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* If there is no data source registered with that name
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*/
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public void remove(DataSource ds) throws DriverException { |
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String name = ds.getName();
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if (tableSource.remove(name) == null) { |
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if (nameOperationDataSource.remove(name) == null) { |
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throw new RuntimeException( |
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"No datasource with the name. Data source name changed since the DataSource instance was retrieved?");
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} |
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} |
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} |
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/**
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* Removes de View of the data source 'ds'
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*
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* @param ds
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* DataSource whose view will be deleted
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*
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* @throws DriverException
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* If the view could not be deleted
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*/
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private void clearView(DBDataSource ds) throws DriverException { |
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DBTableSourceInfo dbInfo = (DBTableSourceInfo) ds.getSourceInfo(); |
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String sql = "DROP VIEW " + dbInfo.tableName; |
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ds.execute(sql); |
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} |
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/**
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* Removes the views created at query delegation
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*
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* @throws DriverException
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* If any view could not be removed
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*/
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public void clearViews() throws DriverException { |
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Iterator i = sourceInfoServerViewInfo.values().iterator();
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while (i.hasNext()) {
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ServerViewInfo svi = (ServerViewInfo) i.next(); |
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clearView(svi.adapter); |
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} |
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sourceInfoServerViewInfo.clear(); |
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} |
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/**
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* A?ade una fuente de datos de objeto. Dado un objeto que implemente la
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* interfaz del driver, se toma como fuente de datos y se le asocia un
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* nombre
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*
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* @param rd
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* objeto con la informaci?n
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* @param name
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* Nombre de la fuente de datos
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*/
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public void addDataSource(ObjectDriver rd, String name) { |
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ObjectSourceInfo info = new ObjectSourceInfo();
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info.driver = rd; |
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tableSource.put(name, info); |
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} |
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/**
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* A?ade una fuente de datos de objeto. Dado un objeto que implemente la
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* interfaz del driver, se toma como fuente de datos y se le asocia un
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* nombre
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*
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* @param rd
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* objeto con la informaci?n
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*
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* @return the name of the data source
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*/
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public String addDataSource(ObjectDriver rd) { |
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String ret = getUID();
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addDataSource(rd, ret); |
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return ret;
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} |
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/**
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* Adds a new data source to the system. If the file doesn't exists it is
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* created when necessary
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*
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* @param driverName
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* Nombre del driver asociado a la fuente de datos
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* @param name
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* Nombre de la tabla con el que se har? referencia en las
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* instrucciones
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* @param file
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* Fichero con los datos
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*/
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public void createFileDataSource(String driverName, String name, |
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String file, String[] fieldNames, int[] fieldTypes) { |
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FileCreationSourceInfo info = (FileCreationSourceInfo) getFileSourceInfo( |
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new FileCreationSourceInfo(), driverName, name, file, false); |
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info.fieldNames = fieldNames; |
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info.fieldTypes = fieldTypes; |
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tableSource.put(name, info); |
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} |
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/**
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* A?ade un origen de datos de fichero al sistema. Cuando se cree un
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* DataSource mediante la invocaci?n createRandomDataSource(String) se
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* crear? una instancia del driver cuyo nombre es driverName
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*
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* @param driverName
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* Nombre del driver asociado a la fuente de datos
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* @param name
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* Nombre de la tabla con el que se har? referencia en las
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* instrucciones
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* @param file
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* Fichero con los datos
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*/
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public void addFileDataSource(String driverName, String name, String file) { |
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FileSourceInfo info = getFileSourceInfo(new FileSourceInfo(),
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driverName, name, file, false);
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tableSource.put(name, info); |
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} |
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/**
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* Gets a FileSourceInfo with the values passed in the parameters
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*
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* @param driverName
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* @param name
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* @param file
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*
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* @return FileSourceInfo
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*/
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private FileSourceInfo getFileSourceInfo(FileSourceInfo info,
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String driverName, String name, String file, boolean spatial) { |
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info.name = name; |
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info.file = file; |
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info.driverName = driverName; |
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info.spatial = spatial; |
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return info;
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} |
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/**
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* Adds a spatial file data source to the system.
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*
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* @param driverName
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* driver used to obtain the data
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* @param name
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* name of the data source
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* @param file
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* file with the data
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*/
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public void addSpatialFileDataSource(String driverName, String name, |
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String file) {
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FileSourceInfo info = getFileSourceInfo(new FileSourceInfo(),
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driverName, name, file, true);
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tableSource.put(name, info); |
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} |
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/**
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* Adds a spatial file data source to the system.
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*
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* @param driverName
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* driver used to obtain the data
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* @param file
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* file with the data
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*
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* @return String Generated name of the added data source
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*/
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public String addSpatialFileDataSource(String driverName, String file) { |
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String ret = getUID();
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addSpatialFileDataSource(driverName, ret, file); |
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return ret;
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} |
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/**
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* A?ade un origen de datos de fichero al sistema. Cuando se cree un
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* DataSource mediante la invocaci?n createRandomDataSource(String) se
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* crear? una instancia del driver cuyo nombre es driverName
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*
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* @param driverName
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* Nombre del driver asociado a la fuente de datos
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* @param file
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* Fichero con los datos
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*
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* @return Nombre ?nico que se asocia a la tabla
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*/
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public String addFileDataSource(String driverName, String file) { |
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String ret = getUID();
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addFileDataSource(driverName, ret, file); |
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return ret;
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} |
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/**
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* Obtiene la informaci?n de la fuente de datos cuyo nombre se pasa como
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* par?metro
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*
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* @param dataSourceName
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* Nombre de la base de datos
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*
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* @return Debido a las distintas formas en las que se puede registrar un
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* datasource, se devuelve un Object, que podr? ser una instancia de
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* DataSourceFactory.FileDriverInfo, DataSourceFactory.DBDriverInfo
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* o ReadDriver
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*/
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public SourceInfo getDriverInfo(String dataSourceName) { |
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return (SourceInfo) tableSource.get(dataSourceName);
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} |
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/**
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* Gets the information of all data sources registered in the system
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*
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* @return DriverInfo[]
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*/
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public SourceInfo[] getDriverInfos() { |
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ArrayList ret = new ArrayList(); |
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Iterator it = tableSource.values().iterator();
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while (it.hasNext()) {
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SourceInfo di = (SourceInfo) it.next(); |
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ret.add(di); |
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} |
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return (SourceInfo[]) ret.toArray(new SourceInfo[0]); |
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} |
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/**
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* A?ade un origen de datos de base de datos al sistema
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*
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* @param name
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* Nombre de la tabla con el que se har? referencia en las
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* instrucciones
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* @param host
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* Cadena de conexi?n para conectar con el sgbd donde se
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* encuentra la tabla
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* @param port
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* Nombre del sgbd capaz de ejecutar SQL en el que reside la
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* tabla. Generalmente ser? la parte de la cadena de conexi?n
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* correspondiente a host, puerto y nombre de la base de datos
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* @param user
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* Nombre de usuario. Null para acceso sin usuario
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* @param password
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* Si el usuario es null se ignora el password
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* @param dbName
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* Nombre de la base de datos a la que se accede
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* @param tableName
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* Nombre de la tabla en la base de datos
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* @param driverInfo
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* Informaci?n para saber qu? driver debe acceder a la
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* informaci?n. Se escoger? el driver cuyo valor de retorno del
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* m?todo getType coincida con este valor
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*/
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public void addDBDataSourceByTable(String name, String host, int port, |
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String user, String password, String dbName, String tableName, |
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String driverInfo) {
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DBTableSourceInfo info = new DBTableSourceInfo();
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fillDBTableSourceInfo(info, name, host, port, user, password, dbName, |
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tableName, driverInfo); |
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tableSource.put(name, info); |
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nameTable.put(name, tableName); |
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} |
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/**
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* Fills the info struct with the values passed in the parameters
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*
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* @param info
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* struct to populate
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* @param name
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* Name of the data source
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* @param host
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* host where the data is
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* @param port
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* port number
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* @param user
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* user name or null.
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* @param password
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* if user name is null is ignored
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* @param dbName
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* database name
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* @param tableName
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* table name
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* @param driverInfo
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* name of the driver used to access the data
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*/
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private void fillDBTableSourceInfo(DBTableSourceInfo info, String name, |
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String host, int port, String user, String password, String dbName, |
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String tableName, String driverInfo) { |
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info.name = name; |
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info.host = host; |
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info.port = port; |
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info.user = user; |
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info.password = password; |
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info.dbName = dbName; |
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info.dbms = host + ":" + port + "/" + dbName + "," + user + "," |
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+ password; |
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info.tableName = tableName; |
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info.driverName = driverInfo; |
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} |
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/**
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* Adds a spatial database data source
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*
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* @param name
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* Name of the data source
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* @param host
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* host where the data is
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* @param port
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* port number
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* @param user
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* user name or null.
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* @param password
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* if user name is null is ignored
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* @param dbName
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* database name
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* @param tableName
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* table name
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* @param geometryFieldName
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* name of the field that has the geometry
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* @param driverInfo
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* name of the driver used to access the data
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*/
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public void addSpatialDBDataSource(String name, String host, int port, |
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String user, String password, String dbName, String tableName, |
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String geometryFieldName, String driverInfo) { |
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SpatialDBTableSourceInfo info = new SpatialDBTableSourceInfo();
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fillDBTableSourceInfo(info, name, host, port, user, password, dbName, |
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tableName, driverInfo); |
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info.geometryField = geometryFieldName; |
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tableSource.put(name, info); |
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nameTable.put(name, tableName); |
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} |
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/**
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* Adds a spatial database data source
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*
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* @param host
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* host where the data is
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* @param port
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* port number
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* @param user
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* user name or null.
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* @param password
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* if user name is null is ignored
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* @param dbName
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* database name
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* @param tableName
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* table name
|
| 481 |
* @param geometryFieldName
|
| 482 |
* name of the field that has the geometry
|
| 483 |
* @param driverInfo
|
| 484 |
* name of the driver used to access the data
|
| 485 |
*
|
| 486 |
* @return generated name of the added data source
|
| 487 |
*/
|
| 488 |
public String addSpatialDBDataSource(String host, int port, String user, |
| 489 |
String password, String dbName, String tableName, |
| 490 |
String geometryFieldName, String driverInfo) { |
| 491 |
String ret = getUID();
|
| 492 |
addSpatialDBDataSource(ret, host, port, user, password, dbName, |
| 493 |
tableName, geometryFieldName, driverInfo); |
| 494 |
|
| 495 |
return ret;
|
| 496 |
} |
| 497 |
|
| 498 |
/**
|
| 499 |
* A?ade un origen de datos de base de datos al sistema
|
| 500 |
*
|
| 501 |
* @param host
|
| 502 |
* Cadena de conexi?n para conectar con el sgbd donde se
|
| 503 |
* encuentra la tabla
|
| 504 |
* @param port
|
| 505 |
* Nombre del sgbd capaz de ejecutar SQL en el que reside la
|
| 506 |
* tabla. Generalmente ser? la parte de la cadena de conexi?n
|
| 507 |
* correspondiente a host, puerto y nombre de la base de datos
|
| 508 |
* @param user
|
| 509 |
* Nombre de usuario. Null para acceso sin usuario
|
| 510 |
* @param password
|
| 511 |
* Si el usuario es null se ignora el password
|
| 512 |
* @param dbName
|
| 513 |
* Nombre de la base de datos a la que se accede
|
| 514 |
* @param tableName
|
| 515 |
* Nombre de la tabla en la base de datos
|
| 516 |
* @param driverInfo
|
| 517 |
* Informaci?n para saber qu? driver debe acceder a la
|
| 518 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
| 519 |
* m?todo getType coincida con este valor
|
| 520 |
*
|
| 521 |
* @return Nombre de la tabla con el que se har? referencia en las
|
| 522 |
* instrucciones
|
| 523 |
*/
|
| 524 |
public String addDBDataSourceByTable(String host, int port, String user, |
| 525 |
String password, String dbName, String tableName, String driverInfo) { |
| 526 |
String name = getUID();
|
| 527 |
addDBDataSourceByTable(name, host, port, user, password, dbName, |
| 528 |
tableName, driverInfo); |
| 529 |
|
| 530 |
return name;
|
| 531 |
} |
| 532 |
|
| 533 |
/**
|
| 534 |
* A?ade un origen de datos de base de datos al sistema
|
| 535 |
*
|
| 536 |
* @param name
|
| 537 |
* Nombre de la tabla con el que se har? referencia en las
|
| 538 |
* instrucciones
|
| 539 |
* @param host
|
| 540 |
* Cadena de conexi?n para conectar con el sgbd donde se
|
| 541 |
* encuentra la tabla
|
| 542 |
* @param port
|
| 543 |
* Nombre del sgbd capaz de ejecutar SQL en el que reside la
|
| 544 |
* tabla. Generalmente ser? la parte de la cadena de conexi?n
|
| 545 |
* correspondiente a host, puerto y nombre de la base de datos
|
| 546 |
* @param user
|
| 547 |
* Nombre de usuario. Null para acceso sin usuario
|
| 548 |
* @param password
|
| 549 |
* Si el usuario es null se ignora el password
|
| 550 |
* @param dbName
|
| 551 |
* Nombre de la base de datos a la que se accede
|
| 552 |
* @param sql
|
| 553 |
* Instrucci?n SQL que define los datos de la tabla
|
| 554 |
* @param driverInfo
|
| 555 |
* Informaci?n para saber qu? driver debe acceder a la
|
| 556 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
| 557 |
* m?todo getType coincida con este valor
|
| 558 |
*/
|
| 559 |
public void addDBDataSourceBySQL(String name, String host, int port, |
| 560 |
String user, String password, String dbName, String sql, |
| 561 |
String driverInfo) {
|
| 562 |
DBQuerySourceInfo info = new DBQuerySourceInfo();
|
| 563 |
info.name = name; |
| 564 |
info.host = host; |
| 565 |
info.port = port; |
| 566 |
info.user = user; |
| 567 |
info.password = password; |
| 568 |
info.dbName = dbName; |
| 569 |
info.dbms = host + ":" + port + "/" + dbName + "," + user + "," |
| 570 |
+ password; |
| 571 |
info.sql = sql; |
| 572 |
info.driverName = driverInfo; |
| 573 |
tableSource.put(name, info); |
| 574 |
} |
| 575 |
|
| 576 |
/**
|
| 577 |
* A?ade un origen de datos de base de datos al sistema
|
| 578 |
*
|
| 579 |
* @param host
|
| 580 |
* Cadena de conexi?n para conectar con el sgbd donde se
|
| 581 |
* encuentra la tabla
|
| 582 |
* @param port
|
| 583 |
* Nombre del sgbd capaz de ejecutar SQL en el que reside la
|
| 584 |
* tabla. Generalmente ser? la parte de la cadena de conexi?n
|
| 585 |
* correspondiente a host, puerto y nombre de la base de datos
|
| 586 |
* @param user
|
| 587 |
* Nombre de usuario. Null para acceso sin usuario
|
| 588 |
* @param password
|
| 589 |
* Si el usuario es null se ignora el password
|
| 590 |
* @param dbName
|
| 591 |
* Nombre de la base de datos a la que se accede
|
| 592 |
* @param sql
|
| 593 |
* Instrucci?n SQL que define los datos de la tabla
|
| 594 |
* @param driverInfo
|
| 595 |
* Informaci?n para saber qu? driver debe acceder a la
|
| 596 |
* informaci?n. Se escoger? el driver cuyo valor de retorno del
|
| 597 |
* m?todo getType coincida con este valor
|
| 598 |
*
|
| 599 |
* @return Nombre de la tabla con el que se har? referencia en las
|
| 600 |
* instrucciones
|
| 601 |
*/
|
| 602 |
public String addDBDataSourceBySQL(String host, int port, String user, |
| 603 |
String password, String dbName, String sql, String driverInfo) { |
| 604 |
String ret = getUID();
|
| 605 |
addDBDataSourceBySQL(ret, host, port, user, password, dbName, sql, |
| 606 |
driverInfo); |
| 607 |
|
| 608 |
return ret;
|
| 609 |
} |
| 610 |
|
| 611 |
/**
|
| 612 |
* Cambia el nombre de una fuente de datos. Las consultas SQL que se
|
| 613 |
* ejecuten con el nombre anterior fallar?n
|
| 614 |
*
|
| 615 |
* @param oldName
|
| 616 |
* Nombre actual de la fuente de datos que se quiere cambiar
|
| 617 |
* @param newName
|
| 618 |
* Nombre que se le quiere poner a la fuente de datos
|
| 619 |
*
|
| 620 |
* @throws NoSuchTableException
|
| 621 |
* Si no hay ninguna fuente de datos de nombre 'oldName'
|
| 622 |
*/
|
| 623 |
public void changeDataSourceName(String oldName, String newName) |
| 624 |
throws NoSuchTableException {
|
| 625 |
SourceInfo di = (SourceInfo) tableSource.remove(oldName); |
| 626 |
|
| 627 |
if (di == null) { |
| 628 |
throw new NoSuchTableException(oldName); |
| 629 |
} |
| 630 |
|
| 631 |
tableSource.put(newName, di); |
| 632 |
} |
| 633 |
|
| 634 |
/**
|
| 635 |
* Gets the data source passed by adding the AutomaticDataSource decorator
|
| 636 |
* if factory mode is AUTOMATIC.
|
| 637 |
*
|
| 638 |
* @param ds
|
| 639 |
* DataSource
|
| 640 |
* @param mode
|
| 641 |
* opening mode
|
| 642 |
*
|
| 643 |
* @return DataSource
|
| 644 |
*/
|
| 645 |
private DataSource getModedDataSource(DataSource ds, int mode) { |
| 646 |
if (mode == AUTOMATIC_OPENING) {
|
| 647 |
return new AutomaticDataSource(ds, delay); |
| 648 |
} else {
|
| 649 |
return ds;
|
| 650 |
} |
| 651 |
} |
| 652 |
|
| 653 |
/**
|
| 654 |
* Sets the minimum delay between accesses needed to close the DataSource.
|
| 655 |
* If accesses are delayed more than 'delay' the DataSource MAY be closed.
|
| 656 |
* Only applies when the mode is set to AUTOMATIC_MODE
|
| 657 |
*
|
| 658 |
* @param delay
|
| 659 |
* time un milliseconds
|
| 660 |
*/
|
| 661 |
public void setClosingDelay(long delay) { |
| 662 |
this.delay = delay;
|
| 663 |
} |
| 664 |
|
| 665 |
/**
|
| 666 |
* Dado el nombre de una tabla, se busca la fuente de datos asociada a dicha
|
| 667 |
* tabla y se obtiene un datasource adecuado en funcion del tipo de fuente
|
| 668 |
* de datos accediendo al subsistema de drivers
|
| 669 |
*
|
| 670 |
* @param tableName
|
| 671 |
* Nombre de la fuente de datos
|
| 672 |
*
|
| 673 |
* @return DataSource que accede a dicha fuente
|
| 674 |
*
|
| 675 |
* @throws DriverLoadException
|
| 676 |
* @throws NoSuchTableException
|
| 677 |
* @throws DriverException
|
| 678 |
*/
|
| 679 |
public DataSource createRandomDataSource(String tableName) |
| 680 |
throws DriverLoadException, NoSuchTableException, DriverException {
|
| 681 |
return createRandomDataSource(tableName, tableName, MANUAL_OPENING);
|
| 682 |
} |
| 683 |
|
| 684 |
/**
|
| 685 |
* Dado el nombre de una tabla, se busca la fuente de datos asociada a dicha
|
| 686 |
* tabla y se obtiene un datasource adecuado en funcion del tipo de fuente
|
| 687 |
* de datos accediendo al subsistema de drivers
|
| 688 |
*
|
| 689 |
* @param tableName
|
| 690 |
* Nombre de la fuente de datos
|
| 691 |
* @param mode
|
| 692 |
* opening mode: AUTOMATIC_OPENING -> the DataSource opens
|
| 693 |
* automatically and closes after a while. It can be closed
|
| 694 |
* manually. MANUAL_OPENING -> the DataSource opens and closes
|
| 695 |
* manually
|
| 696 |
*
|
| 697 |
* @return DataSource que accede a dicha fuente
|
| 698 |
*
|
| 699 |
* @throws DriverLoadException
|
| 700 |
* @throws NoSuchTableException
|
| 701 |
* @throws DriverException
|
| 702 |
*/
|
| 703 |
public DataSource createRandomDataSource(String tableName, int mode) |
| 704 |
throws DriverLoadException, NoSuchTableException, DriverException {
|
| 705 |
return createRandomDataSource(tableName, tableName, mode);
|
| 706 |
} |
| 707 |
|
| 708 |
/**
|
| 709 |
* Dado el nombre de una tabla, se busca la fuente de datos asociada a dicha
|
| 710 |
* tabla y se obtiene un datasource adecuado en funcion del tipo de fuente
|
| 711 |
* de datos accediendo al subsistema de drivers. Se utiliza internamente
|
| 712 |
* como nombre del DataSource el alias que se pasa como par?metro
|
| 713 |
*
|
| 714 |
* @param tableName
|
| 715 |
* Nombre de la fuente de datos
|
| 716 |
* @param tableAlias
|
| 717 |
* Alias que tiene el DataSource en una instrucci?n
|
| 718 |
*
|
| 719 |
* @return DataSource que accede a dicha fuente de datos si la fuente de
|
| 720 |
* datos es alfanum?rica o SpatialDataSource si la fuente de datos
|
| 721 |
* es espacial
|
| 722 |
*
|
| 723 |
* @throws NoSuchTableException
|
| 724 |
* Si no hay una fuente de datos registrada con ese nombre
|
| 725 |
* @throws DriverLoadException
|
| 726 |
* Si hay alg?n error con el sistema de carga de drivers
|
| 727 |
* @throws DriverException
|
| 728 |
* If the created DataSource have to access some data this
|
| 729 |
* access fails
|
| 730 |
* @throws RuntimeException
|
| 731 |
* bug
|
| 732 |
*/
|
| 733 |
public DataSource createRandomDataSource(String tableName, String tableAlias) |
| 734 |
throws NoSuchTableException, DriverLoadException, DriverException {
|
| 735 |
return createRandomDataSource(tableName, tableAlias, MANUAL_OPENING);
|
| 736 |
} |
| 737 |
|
| 738 |
/**
|
| 739 |
* Dado el nombre de una tabla, se busca la fuente de datos asociada a dicha
|
| 740 |
* tabla y se obtiene un datasource adecuado en funcion del tipo de fuente
|
| 741 |
* de datos accediendo al subsistema de drivers. Se utiliza internamente
|
| 742 |
* como nombre del DataSource el alias que se pasa como par?metro
|
| 743 |
*
|
| 744 |
* @param tableName
|
| 745 |
* Nombre de la fuente de datos
|
| 746 |
* @param tableAlias
|
| 747 |
* Alias que tiene el DataSource en una instrucci?n
|
| 748 |
* @param mode
|
| 749 |
* openning mode
|
| 750 |
*
|
| 751 |
* @return DataSource que accede a dicha fuente de datos si la fuente de
|
| 752 |
* datos es alfanum?rica o SpatialDataSource si la fuente de datos
|
| 753 |
* es espacial
|
| 754 |
*
|
| 755 |
* @throws NoSuchTableException
|
| 756 |
* Si no hay una fuente de datos registrada con ese nombre
|
| 757 |
* @throws DriverLoadException
|
| 758 |
* Si hay alg?n error con el sistema de carga de drivers
|
| 759 |
* @throws DriverException
|
| 760 |
* If the created DataSource have to access some data this
|
| 761 |
* access fails
|
| 762 |
* @throws RuntimeException
|
| 763 |
* bug
|
| 764 |
*/
|
| 765 |
public DataSource createRandomDataSource(String tableName, |
| 766 |
String tableAlias, int mode) throws NoSuchTableException, |
| 767 |
DriverLoadException, DriverException {
|
| 768 |
Object o = tableSource.get(tableName);
|
| 769 |
|
| 770 |
if (o == null) { |
| 771 |
// may be a operation layer DataSource
|
| 772 |
OperationDataSource ret = (OperationDataSource) nameOperationDataSource |
| 773 |
.get(tableName); |
| 774 |
|
| 775 |
if (ret != null) { |
| 776 |
ret.setName(tableAlias); |
| 777 |
|
| 778 |
return getModedDataSource(ret, mode);
|
| 779 |
} |
| 780 |
|
| 781 |
// table not found
|
| 782 |
throw new NoSuchTableException(tableName); |
| 783 |
} |
| 784 |
|
| 785 |
SourceInfo info = (SourceInfo) o; |
| 786 |
info.name = tableAlias; |
| 787 |
|
| 788 |
if (info instanceof FileSourceInfo) { |
| 789 |
FileSourceInfo fileInfo = (FileSourceInfo) info; |
| 790 |
|
| 791 |
Driver d = dm.getDriver(fileInfo.driverName);
|
| 792 |
|
| 793 |
if (info instanceof FileCreationSourceInfo) { |
| 794 |
FileCreationSourceInfo creationInfo = (FileCreationSourceInfo) info; |
| 795 |
try {
|
| 796 |
if (!new File(creationInfo.file).exists()) { |
| 797 |
((FileDriver) d).createSource(creationInfo.file, |
| 798 |
creationInfo.fieldNames, |
| 799 |
creationInfo.fieldTypes); |
| 800 |
} |
| 801 |
} catch (IOException e) { |
| 802 |
throw new DriverException(e); |
| 803 |
} |
| 804 |
} |
| 805 |
|
| 806 |
FileDataSource adapter; |
| 807 |
|
| 808 |
if (fileInfo.spatial) {
|
| 809 |
adapter = FileDataSourceFactory.newSpatialInstance(); |
| 810 |
} else {
|
| 811 |
adapter = FileDataSourceFactory.newInstance(); |
| 812 |
} |
| 813 |
|
| 814 |
((GDBMSDriver) d).setDataSourceFactory(this);
|
| 815 |
adapter.setDriver((FileDriver) d); |
| 816 |
adapter.setSourceInfo(fileInfo); |
| 817 |
adapter.setDataSourceFactory(this);
|
| 818 |
|
| 819 |
return getModedDataSource(adapter, mode);
|
| 820 |
} else if (info instanceof DBQuerySourceInfo) { |
| 821 |
DBQuerySourceInfo dbInfo = (DBQuerySourceInfo) info; |
| 822 |
|
| 823 |
String driverInfo = dbInfo.driverName;
|
| 824 |
Driver d = dm.getDriver(driverInfo);
|
| 825 |
|
| 826 |
((GDBMSDriver) d).setDataSourceFactory(this);
|
| 827 |
return getModedDataSource(getDataSourceByQuery(dbInfo.sql,
|
| 828 |
(AlphanumericDBDriver) d, dbInfo), mode); |
| 829 |
} else if (info instanceof DBTableSourceInfo) { |
| 830 |
DBTableSourceInfo dbInfo = (DBTableSourceInfo) info; |
| 831 |
|
| 832 |
String driverInfo = dbInfo.driverName;
|
| 833 |
Driver d = dm.getDriver(driverInfo);
|
| 834 |
|
| 835 |
DBDataSource adapter; |
| 836 |
|
| 837 |
if (info instanceof SpatialDBTableSourceInfo) { |
| 838 |
adapter = DBDataSourceFactory.newSpatialDataSourceInstance(); |
| 839 |
} else {
|
| 840 |
adapter = DBDataSourceFactory.newDataSourceInstance(); |
| 841 |
} |
| 842 |
|
| 843 |
((GDBMSDriver) d).setDataSourceFactory(this);
|
| 844 |
adapter.setDriver((DBDriver) d); |
| 845 |
adapter.setSourceInfo(dbInfo); |
| 846 |
adapter.setDataSourceFactory(this);
|
| 847 |
|
| 848 |
return getModedDataSource(adapter, mode);
|
| 849 |
} else if (info instanceof ObjectSourceInfo) { |
| 850 |
ObjectSourceInfo driverInfo = (ObjectSourceInfo) o; |
| 851 |
ObjectDataSource adapter = ObjectDataSourceFactory.newInstance(); |
| 852 |
driverInfo.driver.setDataSourceFactory(this);
|
| 853 |
adapter.setDriver(driverInfo.driver); |
| 854 |
adapter.setSourceInfo((ObjectSourceInfo) driverInfo); |
| 855 |
adapter.setDataSourceFactory(this);
|
| 856 |
|
| 857 |
return getModedDataSource(adapter, mode);
|
| 858 |
} else {
|
| 859 |
throw new RuntimeException(); |
| 860 |
} |
| 861 |
} |
| 862 |
|
| 863 |
/**
|
| 864 |
* Creates a DataSource from a memento object with the manual opening mode
|
| 865 |
*
|
| 866 |
* @param m
|
| 867 |
* memento
|
| 868 |
*
|
| 869 |
* @return DataSource
|
| 870 |
*
|
| 871 |
* @throws RuntimeException
|
| 872 |
* If the DataSource class cannot be instatiated
|
| 873 |
*/
|
| 874 |
public DataSource createRandomDataSource(Memento m) { |
| 875 |
return createRandomDataSource(m, DataSourceFactory.MANUAL_OPENING);
|
| 876 |
} |
| 877 |
|
| 878 |
/**
|
| 879 |
* Creates a DataSource from a memento object with the specified opening
|
| 880 |
* mode
|
| 881 |
*
|
| 882 |
* @param m
|
| 883 |
* memento
|
| 884 |
* @param mode
|
| 885 |
* opening mode
|
| 886 |
*
|
| 887 |
* @return DataSource
|
| 888 |
*
|
| 889 |
* @throws RuntimeException
|
| 890 |
* If the DataSource class cannot be instatiated
|
| 891 |
*/
|
| 892 |
public DataSource createRandomDataSource(Memento m, int mode) { |
| 893 |
if (m instanceof DataSourceLayerMemento) { |
| 894 |
DataSourceLayerMemento mem = (DataSourceLayerMemento) m; |
| 895 |
|
| 896 |
try {
|
| 897 |
return createRandomDataSource(mem.getTableName(), mem
|
| 898 |
.getTableAlias(), mode); |
| 899 |
} catch (DriverLoadException e) {
|
| 900 |
throw new RuntimeException( |
| 901 |
"La informaci?n guardada no es consistente", e);
|
| 902 |
} catch (NoSuchTableException e) {
|
| 903 |
throw new RuntimeException( |
| 904 |
"La informaci?n guardada no es consistente", e);
|
| 905 |
} catch (DriverException e) {
|
| 906 |
throw new RuntimeException(e); |
| 907 |
} |
| 908 |
} else {
|
| 909 |
OperationLayerMemento mem = (OperationLayerMemento) m; |
| 910 |
|
| 911 |
try {
|
| 912 |
return executeSQL(mem.getSql(), mode);
|
| 913 |
} catch (DriverLoadException e) {
|
| 914 |
throw new RuntimeException( |
| 915 |
"La informaci?n guardada no es consistente", e);
|
| 916 |
} catch (ParseException e) { |
| 917 |
throw new RuntimeException( |
| 918 |
"La informaci?n guardada no es consistente", e);
|
| 919 |
} catch (DriverException e) {
|
| 920 |
throw new RuntimeException( |
| 921 |
"La informaci?n guardada no es consistente", e);
|
| 922 |
} catch (SemanticException e) {
|
| 923 |
throw new RuntimeException( |
| 924 |
"La informaci?n guardada no es consistente", e);
|
| 925 |
} catch (IOException e) { |
| 926 |
throw new RuntimeException( |
| 927 |
"La informaci?n guardada no es consistente", e);
|
| 928 |
} catch (EvaluationException e) {
|
| 929 |
throw new RuntimeException( |
| 930 |
"La informaci?n guardada no es consistente", e);
|
| 931 |
} |
| 932 |
} |
| 933 |
} |
| 934 |
|
| 935 |
/**
|
| 936 |
* Devuelve true si todas las tablas provienen del mismo data base
|
| 937 |
* management system
|
| 938 |
*
|
| 939 |
* @param tables
|
| 940 |
* Array de tablas
|
| 941 |
*
|
| 942 |
* @return boolean
|
| 943 |
*/
|
| 944 |
private boolean sameDBMS(DataSource[] tables) { |
| 945 |
if (!(tables[0] instanceof DBDataSource)) { |
| 946 |
return false; |
| 947 |
} |
| 948 |
|
| 949 |
String dbms = ((DBDataSource) tables[0]).getDBMS(); |
| 950 |
|
| 951 |
for (int i = 1; i < tables.length; i++) { |
| 952 |
if (!(tables[i] instanceof DBDataSource)) { |
| 953 |
return false; |
| 954 |
} |
| 955 |
|
| 956 |
if (!dbms.equals(((DBDataSource) tables[1]).getDBMS())) { |
| 957 |
return false; |
| 958 |
} |
| 959 |
} |
| 960 |
|
| 961 |
return true; |
| 962 |
} |
| 963 |
|
| 964 |
/**
|
| 965 |
* A partir de una instrucci?n select se encarga de obtener el DataSource
|
| 966 |
* resultado de la ejecuci?n de dicha instrucci?n
|
| 967 |
*
|
| 968 |
* @param instr
|
| 969 |
* Instrucci?n select origen del datasource
|
| 970 |
* @param mode
|
| 971 |
* opening mode
|
| 972 |
*
|
| 973 |
* @return DataSource que accede a los datos resultado de ejecutar la select
|
| 974 |
*
|
| 975 |
* @throws DriverLoadException
|
| 976 |
* @throws DriverException
|
| 977 |
* Si fallo la lectura de la fuente de datos por parte del
|
| 978 |
* driver
|
| 979 |
* @throws SemanticException
|
| 980 |
* Si la instrucci?n tiene errores sem?nticos
|
| 981 |
* @throws IOException
|
| 982 |
* Si se produce un error accediendo a las estructuras de datos
|
| 983 |
* internas
|
| 984 |
* @throws EvaluationException
|
| 985 |
* If there's an error evaluating any expression
|
| 986 |
*/
|
| 987 |
public DataSource createRandomDataSource(SelectAdapter instr, int mode) |
| 988 |
throws DriverLoadException, DriverException, SemanticException,
|
| 989 |
IOException, EvaluationException {
|
| 990 |
return getModedDataSource(getDataSource(instr), mode);
|
| 991 |
} |
| 992 |
|
| 993 |
/**
|
| 994 |
* Creates a view in the database management system that hosts the data
|
| 995 |
* source 'dbds'. The view is defined by the sql parameter
|
| 996 |
*
|
| 997 |
* @param dbds
|
| 998 |
* DataSource used to execute the query
|
| 999 |
* @param sql
|
| 1000 |
* The SQL query defining the view
|
| 1001 |
*
|
| 1002 |
* @return Name of the view
|
| 1003 |
*
|
| 1004 |
* @throws DriverException
|
| 1005 |
* If the view cannot be created
|
| 1006 |
*/
|
| 1007 |
private String getView(DBDataSource dbds, String sql) |
| 1008 |
throws DriverException {
|
| 1009 |
ServerViewInfo svi = (ServerViewInfo) sourceInfoServerViewInfo.get(dbds |
| 1010 |
.getSourceInfo()); |
| 1011 |
|
| 1012 |
/*
|
| 1013 |
* Return the view name if it's already created or create the view if
|
| 1014 |
* it's not created
|
| 1015 |
*/
|
| 1016 |
if (svi != null) { |
| 1017 |
return svi.viewName;
|
| 1018 |
} else {
|
| 1019 |
// create the view
|
| 1020 |
String viewName = getUID();
|
| 1021 |
String viewQuery = "CREATE VIEW " + viewName + " AS " + sql; |
| 1022 |
dbds.execute(viewQuery); |
| 1023 |
|
| 1024 |
// Register the view created
|
| 1025 |
sourceInfoServerViewInfo.put(dbds.getSourceInfo(), |
| 1026 |
new ServerViewInfo(dbds, viewName));
|
| 1027 |
|
| 1028 |
return viewName;
|
| 1029 |
} |
| 1030 |
} |
| 1031 |
|
| 1032 |
/**
|
| 1033 |
* Gets a DataSource implementation with the sql instruction as the data
|
| 1034 |
* source by creating a view in the underlaying datasource management system
|
| 1035 |
*
|
| 1036 |
* @param sql
|
| 1037 |
* Instruction definig the data source
|
| 1038 |
* @param driver
|
| 1039 |
* Driver used to access the data source
|
| 1040 |
* @param dbInfo
|
| 1041 |
* data source info
|
| 1042 |
*
|
| 1043 |
* @return DataSource
|
| 1044 |
*
|
| 1045 |
* @throws DriverException
|
| 1046 |
* If cannot create the view
|
| 1047 |
*/
|
| 1048 |
private DBDataSource getDataSourceByQuery(String sql, |
| 1049 |
AlphanumericDBDriver driver, DBTableSourceInfo dbInfo) |
| 1050 |
throws DriverException {
|
| 1051 |
// Create the adapter
|
| 1052 |
DBDataSource adapter = DBDataSourceFactory.newDataSourceInstance(); |
| 1053 |
|
| 1054 |
// set the driver
|
| 1055 |
adapter.setDriver(driver); |
| 1056 |
|
| 1057 |
// Create the query
|
| 1058 |
adapter.setSourceInfo(dbInfo); |
| 1059 |
|
| 1060 |
// Gets the view name
|
| 1061 |
String viewName = getView(adapter, sql);
|
| 1062 |
|
| 1063 |
// Complete the source info with the view name
|
| 1064 |
dbInfo.tableName = viewName; |
| 1065 |
|
| 1066 |
// Register the name association
|
| 1067 |
nameTable.put(dbInfo.name, viewName); |
| 1068 |
|
| 1069 |
// setup the adapter
|
| 1070 |
adapter.setSourceInfo(dbInfo); |
| 1071 |
adapter.setDataSourceFactory(this);
|
| 1072 |
|
| 1073 |
return adapter;
|
| 1074 |
} |
| 1075 |
|
| 1076 |
/**
|
| 1077 |
* A partir de una instrucci?n select se encarga de obtener el DataSource
|
| 1078 |
* resultado de la ejecuci?n de dicha instrucci?n
|
| 1079 |
*
|
| 1080 |
* @param instr
|
| 1081 |
* Instrucci?n select origen del datasource
|
| 1082 |
*
|
| 1083 |
* @return DataSource que accede a los datos resultado de ejecutar la select
|
| 1084 |
*
|
| 1085 |
* @throws DriverException
|
| 1086 |
* @throws SemanticException
|
| 1087 |
* @throws IOException
|
| 1088 |
* @throws EvaluationException
|
| 1089 |
* @throws RuntimeException
|
| 1090 |
* bug
|
| 1091 |
*/
|
| 1092 |
private DataSource getDataSource(SelectAdapter instr) |
| 1093 |
throws DriverException, SemanticException, IOException, |
| 1094 |
EvaluationException {
|
| 1095 |
DataSource[] tables = instr.getTables(); |
| 1096 |
|
| 1097 |
// Estrategia de delegaci?n de la instrucci?n en el sgbd original de la
|
| 1098 |
// tabla
|
| 1099 |
if (sameDBMS(tables) && delegating) {
|
| 1100 |
String sql = translateInstruction(instr, tables);
|
| 1101 |
|
| 1102 |
DBDataSource table = (DBDataSource) tables[0];
|
| 1103 |
|
| 1104 |
// Set the driver info
|
| 1105 |
DBSourceInfo source = (DBSourceInfo) table.getSourceInfo(); |
| 1106 |
String dataSourceName = addDBDataSourceBySQL(source.host,
|
| 1107 |
source.port, source.user, source.password, source.dbName, |
| 1108 |
sql, source.driverName); |
| 1109 |
|
| 1110 |
try {
|
| 1111 |
return createRandomDataSource(dataSourceName,
|
| 1112 |
DataSourceFactory.MANUAL_OPENING); |
| 1113 |
} catch (NoSuchTableException e) {
|
| 1114 |
throw new RuntimeException(e); |
| 1115 |
} catch (DriverLoadException e) {
|
| 1116 |
throw new RuntimeException(e); |
| 1117 |
} catch (DriverException e) {
|
| 1118 |
throw new RuntimeException(e); |
| 1119 |
} |
| 1120 |
} |
| 1121 |
|
| 1122 |
// Estrategia normal
|
| 1123 |
Strategy strategy = StrategyManager.getStrategy(instr); |
| 1124 |
|
| 1125 |
OperationDataSource ret = strategy.select(instr); |
| 1126 |
|
| 1127 |
ret.setName(getUID()); |
| 1128 |
nameOperationDataSource.put(ret.getName(), ret); |
| 1129 |
|
| 1130 |
return ret;
|
| 1131 |
} |
| 1132 |
|
| 1133 |
/**
|
| 1134 |
* Translates the table references by changind the gdbms name with the
|
| 1135 |
* underlaying database management system table name
|
| 1136 |
*
|
| 1137 |
* @param instr
|
| 1138 |
* root of the adapted tree
|
| 1139 |
* @param tables
|
| 1140 |
* DataSources involved in the instruction
|
| 1141 |
*
|
| 1142 |
* @return The translated sql query
|
| 1143 |
*
|
| 1144 |
* @throws DriverException
|
| 1145 |
* If driver access fails
|
| 1146 |
* @throws SemanticException
|
| 1147 |
* If the instruction is not semantically correct
|
| 1148 |
*/
|
| 1149 |
private String translateInstruction(Adapter instr, DataSource[] tables) |
| 1150 |
throws DriverException, SemanticException {
|
| 1151 |
HashMap instrNameDBName = new HashMap(); |
| 1152 |
|
| 1153 |
translateFromTables(instr, instrNameDBName); |
| 1154 |
translateColRefs(instr, instrNameDBName, tables); |
| 1155 |
|
| 1156 |
return Utilities.getText(instr.getEntity()); |
| 1157 |
} |
| 1158 |
|
| 1159 |
/**
|
| 1160 |
* Gets the name of the table where the field is in
|
| 1161 |
*
|
| 1162 |
* @param fieldName
|
| 1163 |
* field whose table wants to be guessed
|
| 1164 |
* @param tables
|
| 1165 |
* tables involved in the search
|
| 1166 |
*
|
| 1167 |
* @return table name
|
| 1168 |
*
|
| 1169 |
* @throws DriverException
|
| 1170 |
* If driver access fails
|
| 1171 |
* @throws SemanticException
|
| 1172 |
* If the instruction is not semantically correct
|
| 1173 |
*/
|
| 1174 |
private String guessTableName(String fieldName, DataSource[] tables) |
| 1175 |
throws DriverException, SemanticException {
|
| 1176 |
int tableIndex = -1; |
| 1177 |
|
| 1178 |
for (int i = 0; i < tables.length; i++) { |
| 1179 |
tables[i].start(); |
| 1180 |
|
| 1181 |
if (tables[i].getFieldIndexByName(fieldName) != -1) { |
| 1182 |
if (tableIndex != -1) { |
| 1183 |
throw new SemanticException("ambiguous column reference: " |
| 1184 |
+ fieldName); |
| 1185 |
} else {
|
| 1186 |
tableIndex = i; |
| 1187 |
} |
| 1188 |
} |
| 1189 |
|
| 1190 |
tables[i].stop(); |
| 1191 |
} |
| 1192 |
|
| 1193 |
if (tableIndex == -1) { |
| 1194 |
throw new SemanticException("Field not found: " + fieldName); |
| 1195 |
} |
| 1196 |
|
| 1197 |
return tables[tableIndex].getName();
|
| 1198 |
} |
| 1199 |
|
| 1200 |
/**
|
| 1201 |
* Translates the table references by changind the gdbms name with the
|
| 1202 |
* underlaying database management system table name
|
| 1203 |
*
|
| 1204 |
* @param adapter
|
| 1205 |
* adapter processed
|
| 1206 |
* @param instrNameDBName
|
| 1207 |
* hasmap with the gdbms names a s the keys and the database name
|
| 1208 |
* as the values.
|
| 1209 |
* @param tables
|
| 1210 |
* tables involved in the instruction
|
| 1211 |
*
|
| 1212 |
* @throws DriverException
|
| 1213 |
* If driver access fails
|
| 1214 |
* @throws SemanticException
|
| 1215 |
* If the instruction is not semantically correct
|
| 1216 |
*/
|
| 1217 |
private void translateColRefs(Adapter adapter, HashMap instrNameDBName, |
| 1218 |
DataSource[] tables) throws DriverException, SemanticException { |
| 1219 |
if (adapter instanceof ColRefAdapter) { |
| 1220 |
ColRefAdapter tra = (ColRefAdapter) adapter; |
| 1221 |
SimpleNode s = tra.getEntity(); |
| 1222 |
|
| 1223 |
if (s.first_token != s.last_token) {
|
| 1224 |
String name = s.first_token.image;
|
| 1225 |
s.first_token.image = instrNameDBName.get(name).toString(); |
| 1226 |
} else {
|
| 1227 |
String tableName = guessTableName(s.first_token.image, tables);
|
| 1228 |
s.first_token.image = instrNameDBName.get(tableName) + "."
|
| 1229 |
+ s.first_token.image; |
| 1230 |
} |
| 1231 |
} else {
|
| 1232 |
Adapter[] hijos = adapter.getChilds();
|
| 1233 |
|
| 1234 |
for (int i = 0; i < hijos.length; i++) { |
| 1235 |
translateColRefs(hijos[i], instrNameDBName, tables); |
| 1236 |
} |
| 1237 |
} |
| 1238 |
} |
| 1239 |
|
| 1240 |
/**
|
| 1241 |
* Translates the table references by changind the gdbms name with the
|
| 1242 |
* underlaying database management system table name
|
| 1243 |
*
|
| 1244 |
* @param adapter
|
| 1245 |
* adapter processed
|
| 1246 |
* @param instrNameDBName
|
| 1247 |
* hasmap with the gdbms names a s the keys and the database name
|
| 1248 |
* as the values.
|
| 1249 |
*/
|
| 1250 |
private void translateFromTables(Adapter adapter, HashMap instrNameDBName) { |
| 1251 |
if (adapter instanceof TableRefAdapter) { |
| 1252 |
TableRefAdapter tra = (TableRefAdapter) adapter; |
| 1253 |
SimpleNode s = tra.getEntity(); |
| 1254 |
|
| 1255 |
if (s.first_token == s.last_token) {
|
| 1256 |
String alias = "gdbms" + System.currentTimeMillis(); |
| 1257 |
String name = s.first_token.image;
|
| 1258 |
s.first_token.image = nameTable.get(name) + " " + alias;
|
| 1259 |
instrNameDBName.put(name, alias); |
| 1260 |
} else {
|
| 1261 |
String alias = s.last_token.image;
|
| 1262 |
String name = s.first_token.image;
|
| 1263 |
s.first_token.image = nameTable.get(name).toString(); |
| 1264 |
instrNameDBName.put(alias, alias); |
| 1265 |
} |
| 1266 |
} else {
|
| 1267 |
Adapter[] hijos = adapter.getChilds();
|
| 1268 |
|
| 1269 |
for (int i = 0; i < hijos.length; i++) { |
| 1270 |
translateFromTables(hijos[i], instrNameDBName); |
| 1271 |
} |
| 1272 |
} |
| 1273 |
} |
| 1274 |
|
| 1275 |
/**
|
| 1276 |
* Obtiene el DataSource resultado de ejecutar la instrucci?n de union
|
| 1277 |
*
|
| 1278 |
* @param instr
|
| 1279 |
* instrucci?n de union
|
| 1280 |
* @param mode
|
| 1281 |
* opening mode
|
| 1282 |
*
|
| 1283 |
* @return DataSource
|
| 1284 |
*
|
| 1285 |
* @throws DriverException
|
| 1286 |
* Si fallo la lectura de la fuente de datos por parte del
|
| 1287 |
* driver
|
| 1288 |
* @throws IOException
|
| 1289 |
* Si se produce un error de entrada/salida
|
| 1290 |
* @throws SemanticException
|
| 1291 |
* Si la instrucci?n tiene errores sem?nticos
|
| 1292 |
* @throws EvaluationException
|
| 1293 |
* If there's any problem during expresion evaluation
|
| 1294 |
* @throws ParseException
|
| 1295 |
* If there is a select statement embeeded in the union
|
| 1296 |
* statement and its parse fails
|
| 1297 |
*/
|
| 1298 |
public DataSource createRandomDataSource(UnionAdapter instr, int mode) |
| 1299 |
throws DriverException, IOException, SemanticException, |
| 1300 |
EvaluationException, ParseException {
|
| 1301 |
return getModedDataSource(getDataSource(instr), mode);
|
| 1302 |
} |
| 1303 |
|
| 1304 |
/**
|
| 1305 |
* Obtiene el DataSource resultado de ejecutar la instrucci?n de union
|
| 1306 |
*
|
| 1307 |
* @param instr
|
| 1308 |
* instrucci?n de union
|
| 1309 |
*
|
| 1310 |
* @return DataSource
|
| 1311 |
*
|
| 1312 |
* @throws DriverException
|
| 1313 |
* Si fallo la lectura de la fuente de datos por parte del
|
| 1314 |
* driver
|
| 1315 |
* @throws IOException
|
| 1316 |
* Si se produce un error de entrada/salida
|
| 1317 |
* @throws SemanticException
|
| 1318 |
* Si la instrucci?n tiene errores sem?nticos
|
| 1319 |
* @throws ParseException
|
| 1320 |
* If there is a select statement embeeded in the union
|
| 1321 |
* statement and its parse fails
|
| 1322 |
* @throws EvaluationException
|
| 1323 |
* If there's any problem during expresion evaluation
|
| 1324 |
*/
|
| 1325 |
private DataSource getDataSource(UnionAdapter instr) |
| 1326 |
throws DriverException, IOException, SemanticException, |
| 1327 |
ParseException, EvaluationException {
|
| 1328 |
try {
|
| 1329 |
Strategy strategy = StrategyManager.getStrategy(instr); |
| 1330 |
|
| 1331 |
OperationDataSource ret; |
| 1332 |
ret = strategy.union(instr); |
| 1333 |
|
| 1334 |
ret.setName(getUID()); |
| 1335 |
nameOperationDataSource.put(ret.getName(), ret); |
| 1336 |
|
| 1337 |
return ret;
|
| 1338 |
} catch (DriverLoadException e) {
|
| 1339 |
throw new DriverException(e); |
| 1340 |
} |
| 1341 |
|
| 1342 |
} |
| 1343 |
|
| 1344 |
/**
|
| 1345 |
* Creates a DataSource as a result of a custom query
|
| 1346 |
*
|
| 1347 |
* @param instr
|
| 1348 |
* Root node of the adapter tree of the custom query instruction
|
| 1349 |
* @param mode
|
| 1350 |
* opening mode
|
| 1351 |
*
|
| 1352 |
* @return DataSource with the custom query result
|
| 1353 |
*
|
| 1354 |
* @throws SemanticException
|
| 1355 |
* if there is any semantic error in the instruction
|
| 1356 |
*/
|
| 1357 |
public DataSource getDataSource(CustomAdapter instr, int mode) |
| 1358 |
throws SemanticException {
|
| 1359 |
return getModedDataSource(getDataSource(instr), mode);
|
| 1360 |
} |
| 1361 |
|
| 1362 |
/**
|
| 1363 |
* Creates a DataSource as a result of a custom query
|
| 1364 |
*
|
| 1365 |
* @param instr
|
| 1366 |
* Root node of the adapter tree of the custom query instruction
|
| 1367 |
*
|
| 1368 |
* @return DataSource with the custom query result
|
| 1369 |
*
|
| 1370 |
* @throws SemanticException
|
| 1371 |
* if there is any semantic error in the instruction
|
| 1372 |
*/
|
| 1373 |
private DataSource getDataSource(CustomAdapter instr) |
| 1374 |
throws SemanticException {
|
| 1375 |
Strategy strategy = StrategyManager.getStrategy(instr); |
| 1376 |
|
| 1377 |
OperationDataSource ret = strategy.custom(instr); |
| 1378 |
|
| 1379 |
ret.setName(getUID()); |
| 1380 |
nameOperationDataSource.put(ret.getName(), ret); |
| 1381 |
|
| 1382 |
return ret;
|
| 1383 |
} |
| 1384 |
|
| 1385 |
/**
|
| 1386 |
* Ejecuta la instrucci?n SQL que se pasa como par?metro obteniendo un
|
| 1387 |
* DataSource con el resultado de la ejecuci?n
|
| 1388 |
*
|
| 1389 |
* @param sql
|
| 1390 |
* instrucci?n sql que se quiere ejecutar
|
| 1391 |
* @param mode
|
| 1392 |
* opening mode
|
| 1393 |
*
|
| 1394 |
* @return DataSource con el resultado
|
| 1395 |
*
|
| 1396 |
* @throws ParseException
|
| 1397 |
* Si se produce un error de parse de la instrucci?n
|
| 1398 |
* @throws DriverLoadException
|
| 1399 |
* Si no se pueden cargar los drivers
|
| 1400 |
* @throws DriverException
|
| 1401 |
* Si se produce un error accediendo a los drivers
|
| 1402 |
* @throws SemanticException
|
| 1403 |
* Si la instrucci?n tiene alg?n error sem?ntico
|
| 1404 |
* @throws IOException
|
| 1405 |
* Si se produce un error accediendo a las estructuras de datos
|
| 1406 |
* internas usadas para los c?lculos
|
| 1407 |
* @throws EvaluationException
|
| 1408 |
* If there's an error evaluating any expression
|
| 1409 |
*/
|
| 1410 |
public DataSource executeSQL(String sql, int mode) throws ParseException, |
| 1411 |
DriverLoadException, DriverException, SemanticException, |
| 1412 |
IOException, EvaluationException {
|
| 1413 |
ByteArrayInputStream bytes = new ByteArrayInputStream(sql.getBytes()); |
| 1414 |
SQLEngine parser = new SQLEngine(bytes);
|
| 1415 |
|
| 1416 |
parser.SQLStatement(); |
| 1417 |
|
| 1418 |
Node root = parser.getRootNode(); |
| 1419 |
Adapter rootAdapter = Utilities.buildTree(root.jjtGetChild(0), sql, |
| 1420 |
this);
|
| 1421 |
|
| 1422 |
Utilities.simplify(rootAdapter);
|
| 1423 |
|
| 1424 |
DataSource result = null; |
| 1425 |
|
| 1426 |
if (rootAdapter instanceof SelectAdapter) { |
| 1427 |
result = getDataSource((SelectAdapter) rootAdapter); |
| 1428 |
} else if (rootAdapter instanceof UnionAdapter) { |
| 1429 |
result = getDataSource((UnionAdapter) rootAdapter); |
| 1430 |
} else if (rootAdapter instanceof CustomAdapter) { |
| 1431 |
result = getDataSource((CustomAdapter) rootAdapter); |
| 1432 |
} |
| 1433 |
|
| 1434 |
// if operation was delegated it isn't a OperationDataSource
|
| 1435 |
if (result instanceof OperationDataSource) { |
| 1436 |
((OperationDataSource) result).setSQL(sql); |
| 1437 |
} |
| 1438 |
|
| 1439 |
result.setDataSourceFactory(this);
|
| 1440 |
|
| 1441 |
return getModedDataSource(result, mode);
|
| 1442 |
} |
| 1443 |
|
| 1444 |
/**
|
| 1445 |
* Establece el DriverManager que se usar? para instanciar DataSource's.
|
| 1446 |
* Este metodo debe ser invocado antes que ning?n otro
|
| 1447 |
*
|
| 1448 |
* @param dm
|
| 1449 |
* El manager que se encarga de cargar los drivers
|
| 1450 |
*/
|
| 1451 |
public void setDriverManager(DriverManager dm) { |
| 1452 |
this.dm = dm;
|
| 1453 |
} |
| 1454 |
/**
|
| 1455 |
* Establece el WriterManager que se usar? para instanciar DataSource's.
|
| 1456 |
* Este metodo debe ser invocado antes que ning?n otro
|
| 1457 |
*
|
| 1458 |
* @param dm
|
| 1459 |
* El manager que se encarga de cargar los drivers
|
| 1460 |
*/
|
| 1461 |
public void setWriterManager(WriterManager wm) { |
| 1462 |
this.wm = wm;
|
| 1463 |
} |
| 1464 |
/**
|
| 1465 |
* Get's the module with the specified name
|
| 1466 |
*
|
| 1467 |
* @param name
|
| 1468 |
* name of the wanted module
|
| 1469 |
*
|
| 1470 |
* @return instance of the module
|
| 1471 |
*/
|
| 1472 |
public Object getModule(String name) { |
| 1473 |
return ms.getModule(name);
|
| 1474 |
} |
| 1475 |
|
| 1476 |
/**
|
| 1477 |
* Registers a module in the system with the specified name
|
| 1478 |
*
|
| 1479 |
* @param name
|
| 1480 |
* name of the module
|
| 1481 |
* @param instance
|
| 1482 |
* module instance
|
| 1483 |
*/
|
| 1484 |
public void registerModule(String name, Object instance) { |
| 1485 |
ms.registerModule(name, instance); |
| 1486 |
} |
| 1487 |
|
| 1488 |
/**
|
| 1489 |
* Gets a driver manager reference
|
| 1490 |
*
|
| 1491 |
* @return DriverManagers.
|
| 1492 |
*/
|
| 1493 |
public DriverManager getDriverManager() { |
| 1494 |
return dm;
|
| 1495 |
} |
| 1496 |
/**
|
| 1497 |
* Gets a writer manager reference
|
| 1498 |
*
|
| 1499 |
* @return WriterManagers.
|
| 1500 |
*/
|
| 1501 |
public WriterManager getWriterManager() {
|
| 1502 |
return wm;
|
| 1503 |
} |
| 1504 |
/**
|
| 1505 |
* Sets if this factory will check for delegating instructions at the server
|
| 1506 |
* (true) or will execute all queries internally (false). By delegating at
|
| 1507 |
* the server, lots of queries will be defined in the database management
|
| 1508 |
* system where the execution is delegated. Invoke clearViews to remove all
|
| 1509 |
* created views.
|
| 1510 |
*
|
| 1511 |
* @param b
|
| 1512 |
*/
|
| 1513 |
public void setDelegating(boolean b) { |
| 1514 |
this.delegating = b;
|
| 1515 |
} |
| 1516 |
|
| 1517 |
/**
|
| 1518 |
* Creates a new table on the specified database
|
| 1519 |
*
|
| 1520 |
* @param database
|
| 1521 |
* name of the database where the table will be created
|
| 1522 |
* @param pkNames
|
| 1523 |
* Names of the primary key fields
|
| 1524 |
* @param names
|
| 1525 |
* names of the fields
|
| 1526 |
* @param types
|
| 1527 |
* types of the fields. Must have the same length than names
|
| 1528 |
*
|
| 1529 |
* @return the table name
|
| 1530 |
*
|
| 1531 |
* @throws SQLException
|
| 1532 |
* if the creation fails
|
| 1533 |
*/
|
| 1534 |
public String createTable(String database, String[] pkNames, |
| 1535 |
String[] names, int[] types) throws SQLException { |
| 1536 |
// Get a name for the table
|
| 1537 |
String tableName = getUID();
|
| 1538 |
|
| 1539 |
// Create the table
|
| 1540 |
InnerDBUtils.execute(database, InnerDBUtils.getCreateStatementWithPK( |
| 1541 |
tableName, pkNames, names, types)); |
| 1542 |
|
| 1543 |
return tableName;
|
| 1544 |
} |
| 1545 |
|
| 1546 |
/**
|
| 1547 |
* Frees all resources used during execution
|
| 1548 |
*
|
| 1549 |
* @throws SQLException
|
| 1550 |
* If cannot free internal resources
|
| 1551 |
* @throws DriverException
|
| 1552 |
* If drivers cannot free remote resources
|
| 1553 |
*/
|
| 1554 |
public void finalize() throws SQLException, DriverException { |
| 1555 |
clearViews(); |
| 1556 |
|
| 1557 |
Connection c = java.sql.DriverManager.getConnection(
|
| 1558 |
"jdbc:hsqldb:file:", "", ""); |
| 1559 |
Statement st = c.createStatement();
|
| 1560 |
st.execute("SHUTDOWN");
|
| 1561 |
st.close(); |
| 1562 |
c.close(); |
| 1563 |
} |
| 1564 |
|
| 1565 |
/**
|
| 1566 |
* Initializes the system.
|
| 1567 |
*
|
| 1568 |
* @throws InitializationException
|
| 1569 |
* If the initialization
|
| 1570 |
*/
|
| 1571 |
public void initialize() throws InitializationException { |
| 1572 |
initialize(".");
|
| 1573 |
} |
| 1574 |
|
| 1575 |
/**
|
| 1576 |
* Initializes the system
|
| 1577 |
*
|
| 1578 |
* @param tempDir
|
| 1579 |
* temporary directory to write data
|
| 1580 |
*
|
| 1581 |
* @throws InitializationException
|
| 1582 |
* If the initialization fails
|
| 1583 |
*/
|
| 1584 |
public void initialize(String tempDir) throws InitializationException { |
| 1585 |
try {
|
| 1586 |
this.tempDir = new File(tempDir); |
| 1587 |
|
| 1588 |
if (!this.tempDir.exists()) { |
| 1589 |
this.tempDir.mkdirs();
|
| 1590 |
} |
| 1591 |
|
| 1592 |
Class.forName("org.hsqldb.jdbcDriver"); |
| 1593 |
} catch (ClassNotFoundException e) { |
| 1594 |
throw new InitializationException(e); |
| 1595 |
} |
| 1596 |
} |
| 1597 |
|
| 1598 |
/**
|
| 1599 |
* Gets the URL of a file in the temporary directory. Does not creates any
|
| 1600 |
* file
|
| 1601 |
*
|
| 1602 |
* @return String
|
| 1603 |
*/
|
| 1604 |
public String getTempFile() { |
| 1605 |
return tempDir.getAbsolutePath() + File.separator + "gdmbs" |
| 1606 |
+ System.currentTimeMillis();
|
| 1607 |
} |
| 1608 |
|
| 1609 |
/**
|
| 1610 |
* Information to delete the view on the server: name of the view and the
|
| 1611 |
* adapter to remove it
|
| 1612 |
*/
|
| 1613 |
private class ServerViewInfo { |
| 1614 |
public DBDataSource adapter;
|
| 1615 |
|
| 1616 |
public String viewName; |
| 1617 |
|
| 1618 |
/**
|
| 1619 |
* Crea un nuevo ServerViewInfo.
|
| 1620 |
*
|
| 1621 |
* @param ds
|
| 1622 |
* DOCUMENT ME!
|
| 1623 |
* @param name
|
| 1624 |
* DOCUMENT ME!
|
| 1625 |
*/
|
| 1626 |
public ServerViewInfo(DBDataSource ds, String name) { |
| 1627 |
adapter = ds; |
| 1628 |
viewName = name; |
| 1629 |
} |
| 1630 |
} |
| 1631 |
} |