svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_data / src / org / gvsig / fmap / data / DataManager.java @ 22373
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package org.gvsig.fmap.data; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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import org.gvsig.fmap.data.operation.DataStoreOperation; |
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import org.gvsig.fmap.data.operation.DataStoreOperationContext; |
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import org.gvsig.fmap.data.operation.DataStoreOperationException; |
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import org.gvsig.fmap.data.operation.DataStoreOperationNotSupportedException; |
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public class DataManager { |
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private static ArrayList registers = new ArrayList(); |
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private static DataManager manager = null; |
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public static DataManager getManager() { |
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if( manager == null ) { |
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manager = new DataManager();
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} |
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return manager;
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} |
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public static ResourceManager getResourceManager() { |
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return ResourceManager.getResourceManager();
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} |
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private List dataStoreOperations = new ArrayList(); |
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public DataManager() {
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// org.gvsig.fmap.data.feature.driver.shp.Register.selfRegister();
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// org.gvsig.fmap.data.feature.driver.Register.selfRegister();
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// org.gvsig.fmap.data.gml.Register.selfRegister();
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} |
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public void registerGeometryHandler(String dataStoreID, Class geometryHandlerClass) { |
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} |
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public void registerDataStore(String name, Class dataStoreClass, Class parametersClass) { |
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RegisterInfo register = new RegisterInfo(RegisterInfo.TYPE_STORE, name,
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dataStoreClass, parametersClass); |
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if (registers.contains(register)){
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return;
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} |
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registers.add(register); |
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} |
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/**
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* Levanta una instancia de los parametros solicitados
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* inicializa el nombre en la instancia
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* y la devuelve.
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* @throws InitializeException TODO
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**/
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public DataStoreParameters createDataStoreParameters(String name) throws InitializeException{ |
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RegisterInfo registerInfo = this.getRegisterByName(name);
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if (registerInfo == null){ |
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throw new InitializeException("Not registered in manager",name); |
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} else if (registerInfo.type != RegisterInfo.TYPE_STORE) { |
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throw new InitializeException("Not register as Store", name); |
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} |
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try {
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return (DataStoreParameters)registerInfo.parametersClazz.newInstance();
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} catch (InstantiationException e) { |
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throw new InitializeException(name,e); |
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} catch (IllegalAccessException e) { |
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throw new InitializeException(name,e); |
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} |
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} |
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/**
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* Levanta la instancia del datasource,
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* levanta una instancia del driver que precisa el datasource
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* y por ultimo invoca al metodo init del datasource.
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* @throws InitializeException
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**/
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public DataStore createDataStore(DataStoreParameters parameters) throws InitializeException { |
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String name = parameters.getDataStoreName();
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RegisterInfo registerInfo = this.getRegisterByName(name);
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if (registerInfo == null){ |
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throw new InitializeException("Not registered in manager",name); |
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} |
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try {
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DataStore dataStore= (DataStore)registerInfo.clazz.newInstance(); |
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dataStore.init(parameters); |
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return dataStore;
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} catch (InstantiationException e) { |
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throw new InitializeException(name,e); |
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} catch (IllegalAccessException e) { |
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throw new InitializeException(name,e); |
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} |
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} |
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/* Como conjunto de propiedades genericas a un tipo de DataStore
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* a las que se puede acceder sin tener que crear un DataStore/Driver.
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*
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* Por ejemplo para "DriverDataSource.shp" podria tener el
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* tamaño de identificador de campo.
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*
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* En "DriverDataSource.postgres" podria aportar informacion sobre
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* las tablas disponibles o cosas asi. Hay que ver que precisa
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* GeoDB y de donde lo puede obtener.
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*
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* Hay que pensarlo bien.
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*
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*/
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public void registerDataExplorer(String name, Class dataSourceClass, Class parametersClass) { |
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RegisterInfo register = new RegisterInfo(RegisterInfo.TYPE_EXPLORER,
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name, dataSourceClass, parametersClass); |
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if (registers.contains(register)){
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return;
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} |
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registers.add(register); |
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} |
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/**
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* Levanta una instancia de los parametros solicitados
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* inicializa el nombre en la instancia
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* y la devuelve.
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* @throws InitializeException TODO
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**/
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public DataExplorerParameters createDataExplorerParameters(String name) throws InitializeException { |
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RegisterInfo registerInfo = this.getRegisterByName(name);
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if (registerInfo == null){ |
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throw new InitializeException("Not registered in manager",name); |
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} else if (registerInfo.type != RegisterInfo.TYPE_EXPLORER) { |
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throw new InitializeException("Not register as Explorer", name); |
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} |
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try {
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return (DataExplorerParameters)registerInfo.parametersClazz.newInstance();
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} catch (InstantiationException e) { |
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throw new InitializeException(name,e); |
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} catch (IllegalAccessException e) { |
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throw new InitializeException(name,e); |
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} catch (Exception e) { |
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// TODO: de momento para los class en el caso de que no exista el explorer.
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throw new InitializeException(name, e); |
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} |
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} |
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public DataExplorer createDataExplorer(DataExplorerParameters parameters) throws InitializeException { |
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RegisterInfo registerInfo = this.getRegisterByName(parameters.getDataExplorerName());
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if (registerInfo == null){ |
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throw new InitializeException("Not registered in manager",parameters.getDataExplorerName()); |
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} |
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try {
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DataExplorer dataSource= (DataExplorer)registerInfo.clazz.newInstance(); |
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dataSource.init(parameters); |
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return dataSource;
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} catch (InstantiationException e) { |
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throw new InitializeException(parameters.getDataExplorerName(),e); |
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} catch (IllegalAccessException e) { |
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throw new InitializeException(parameters.getDataExplorerName(),e); |
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} |
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} |
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private RegisterInfo getRegisterByName(String name){ |
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Iterator iterator=registers.iterator();
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while (iterator.hasNext()) {
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RegisterInfo registerInfo = (RegisterInfo) iterator.next(); |
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if (name.equals(registerInfo.name)){
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return registerInfo;
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} |
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} |
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return null; |
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} |
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public int registerDataStoreOperation(String storeName, String operationName, DataStoreOperation operation) { |
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if (operationName == null){ |
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throw new IllegalArgumentException("operationName cannot be null."); |
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} |
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if (operation == null){ |
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throw new IllegalArgumentException("operation cannot be null."); |
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} |
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RegisterInfo register = this.getRegisterByName(storeName);
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if (register == null){ |
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throw new IllegalArgumentException(storeName + " not registered"); |
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} |
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int index = registerGeometryOperationName(operationName);
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register.registerOperation(index, operation); |
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return index;
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} |
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private int registerGeometryOperationName(String operationName) { |
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if (operationName == null) { |
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throw new IllegalArgumentException("operationName cannot be null."); |
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} |
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int index = dataStoreOperations .indexOf(operationName);
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if (index == -1) { |
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dataStoreOperations.add(operationName); |
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index = dataStoreOperations.indexOf(operationName); |
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} |
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return index;
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} |
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private int getOperationIndex(String operationName) { |
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return dataStoreOperations .indexOf(operationName);
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} |
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public Object invokeDataStoreOperation(DataStore store,int code,DataStoreOperationContext context) throws DataStoreOperationException, DataStoreOperationNotSupportedException{ |
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if (code < 0 || code >= dataStoreOperations.size()){ |
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throw new DataStoreOperationNotSupportedException(code,"{not registered}",store.getName()); |
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} |
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RegisterInfo register = this.getRegisterByName(store.getName());
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DataStoreOperation operation = register.getOperation(code); |
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if (operation == null){ |
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throw new DataStoreOperationNotSupportedException(code,(String)this.dataStoreOperations.get(code),store.getName()); |
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} |
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return operation.invoke(store, context);
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} |
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public Object invokeDataStoreOperation(DataStore store,String operationName,DataStoreOperationContext context) throws DataStoreOperationException, DataStoreOperationNotSupportedException{ |
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return this.invokeDataStoreOperation(store, this.getOperationIndex(operationName), context); |
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} |
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private class RegisterInfo{ |
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public static final String TYPE_STORE = "store"; |
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public static final String TYPE_EXPLORER = "explorer"; |
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private String name; |
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private String type; |
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private Class clazz; |
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private Class parametersClazz; |
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private List operations = new ArrayList(); |
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public RegisterInfo(String type, String name, Class dsc, Class pc) { |
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this.type = type;
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this.name=name;
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this.clazz=dsc;
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this.parametersClazz=pc;
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} |
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public boolean equals(Object obj) { |
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if (obj instanceof RegisterInfo){ |
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RegisterInfo ri = (RegisterInfo)obj; |
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return ri.name.equals(this.name) && |
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ri.clazz.equals(this.clazz) &&
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ri.parametersClazz.equals(this.parametersClazz);
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} |
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return super.equals(obj); |
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} |
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public void registerOperation(int index, DataStoreOperation operation){ |
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while (index > operations.size()) {
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operations.add(null);
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} |
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if (index == operations.size()) {
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operations.add(operation); |
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} else {
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operations.set(index, operation); |
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} |
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} |
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public DataStoreOperation getOperation(int index){ |
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try{
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return (DataStoreOperation) this.operations.get(index); |
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}catch (IndexOutOfBoundsException e) { |
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return null; |
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} |
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} |
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} |
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public boolean implementsDataStoreOperation( |
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String storeName, String operationName) { |
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return this.implementsDataStoreOperation(storeName, this.getOperationIndex(operationName)); |
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} |
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public boolean implementsDataStoreOperation( |
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String storeName, int operationCode) { |
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RegisterInfo register = this.getRegisterByName(storeName);
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DataStoreOperation operation = register.getOperation(operationCode); |
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if (operation == null){ |
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return false; |
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} |
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return true; |
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} |
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public String[] getRegisters() { |
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String[] reg=new String[registers.size()]; |
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for (int i = 0; i < registers.size(); i++) { |
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reg[i]=((RegisterInfo)registers.get(i)).name; |
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} |
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return reg;
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} |
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public String[] getRegistersStores() { |
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return this.getRegisterOfType(RegisterInfo.TYPE_STORE); |
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} |
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public String[] getRegistersExplorers() { |
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return this.getRegisterOfType(RegisterInfo.TYPE_EXPLORER); |
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} |
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private String[] getRegisterOfType(String type) { |
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List reg = new ArrayList(); |
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RegisterInfo info = null;
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for (int i = 0; i < registers.size(); i++) { |
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info =(RegisterInfo) registers.get(i); |
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if (info.type == type) {
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reg.add(info.name); |
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} |
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} |
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return (String[]) reg.toArray(new String[0]); |
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} |
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} |