root / trunk / libraries / libDataSourceDBBaseDrivers / src / org / gvsig / data / datastores / vectorial / driver / jdbc / h2 / H2DriverUtils.java @ 19610
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package org.gvsig.data.datastores.vectorial.driver.jdbc.h2; |
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import java.sql.Connection; |
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import java.sql.DriverManager; |
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import java.sql.ResultSet; |
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import java.sql.ResultSetMetaData; |
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import java.sql.Statement; |
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import org.gvsig.data.datastores.vectorial.driver.jdbc.DBFeatureType; |
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import org.gvsig.data.datastores.vectorial.driver.jdbc.exception.JDBCDriverNotFoundException; |
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import org.gvsig.data.datastores.vectorial.driver.jdbc.exception.SQLException; |
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import org.gvsig.data.exception.InitializeException; |
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import org.gvsig.data.exception.ReadException; |
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import org.gvsig.data.vectorial.DefaultAttributeDescriptor; |
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import org.gvsig.data.vectorial.IFeature; |
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import org.gvsig.data.vectorial.IFeatureAttributeDescriptor; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.drivers.WKBParser2; |
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public class H2DriverUtils { |
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static DBFeatureType getFeatureType(Connection conn,String tableName,String columns) throws ReadException{ |
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String sql=""; |
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if (columns == null || columns == ""){ |
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columns = "*";
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} |
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try {
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sql = "Select "+columns+" from " + tableName + " limit 1;"; |
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Statement stAux = conn.createStatement();
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ResultSet rs = stAux.executeQuery(sql);
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rs.next(); |
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ResultSetMetaData rsMetadata = rs.getMetaData();
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ResultSet rsAllMeta = conn.getMetaData().getAttributes(null, null, tableName, "*"); |
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String colName;
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int i;
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DBFeatureType featureType = new DBFeatureType();
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DefaultAttributeDescriptor attr; |
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for (i=1;i<=rsMetadata.getColumnCount();i++){ |
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colName= rsMetadata.getColumnName(i); |
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rsAllMeta.first(); |
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while (true){ |
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if (rsAllMeta.isAfterLast()){
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attr = getAttributeFromJDBC(conn,rsMetadata,i); |
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featureType.add(attr); |
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break;
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} else if(rsAllMeta.getString("COLUMN_NAME").equals(colName)){ |
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attr = getAttributeFromJDBC(conn,rsAllMeta); |
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featureType.add(attr); |
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break;
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} |
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rsAllMeta.next(); |
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} |
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} |
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rs.close(); |
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rsAllMeta.close(); |
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return featureType;
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} catch (java.sql.SQLException e) {
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// TODO Auto-generated catch block
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throw new SQLException(sql,"getFeatureType",e); |
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} |
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} |
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private static DefaultAttributeDescriptor getAttributeFromJDBC(Connection conn,ResultSetMetaData rsMetadata,int colIndex) throws SQLException{ |
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DefaultAttributeDescriptor column= new DefaultAttributeDescriptor();
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try {
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column.setName(rsMetadata.getColumnName(colIndex)); |
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/*
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TYPE_BYTE = "BYTE";
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TYPE_BOOLEAN = "BOOLEAN";
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TYPE_INT = "INTEGER";
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TYPE_LONG = "LONG";
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TYPE_FLOAT = "FLOAT";
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TYPE_DOUBLE = "DOUBLE";
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TYPE_STRING = "STRING";
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TYPE_DATE = "DATE";
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TYPE_GEOMETRY = "GEOMETRY";
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TYPE_OBJECT = "OBJECT";
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TYPE_FEATURE = "FEATURE";
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*/
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switch (rsMetadata.getColumnType(colIndex)) {
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case java.sql.Types.INTEGER:
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column.setType(IFeatureAttributeDescriptor.TYPE_INT); |
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case java.sql.Types.BIGINT:
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column.setType(IFeatureAttributeDescriptor.TYPE_LONG); |
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case java.sql.Types.REAL:
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column.setType(IFeatureAttributeDescriptor.TYPE_DOUBLE); |
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// column.setPrecision(rsMetadata.getInt("DECIMAL_DIGITS"));
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case java.sql.Types.DOUBLE:
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column.setType(IFeatureAttributeDescriptor.TYPE_DOUBLE); |
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// column.setPrecision(rsMetadata.getInt("DECIMAL_DIGITS"));
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case java.sql.Types.CHAR:
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column.setType(IFeatureAttributeDescriptor.TYPE_STRING); |
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column.setSize(rsMetadata.getColumnDisplaySize(colIndex)); |
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case java.sql.Types.VARCHAR:
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column.setType(IFeatureAttributeDescriptor.TYPE_STRING); |
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column.setSize(rsMetadata.getColumnDisplaySize(colIndex)); |
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case java.sql.Types.FLOAT:
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column.setType(IFeatureAttributeDescriptor.TYPE_FLOAT); |
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column.setSize(rsMetadata.getColumnDisplaySize(colIndex)); |
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case java.sql.Types.DECIMAL:
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column.setType(IFeatureAttributeDescriptor.TYPE_FLOAT); |
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column.setSize(rsMetadata.getColumnDisplaySize(colIndex)); |
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// column.setPrecision(rsMetadata.getInt("DECIMAL_DIGITS"));
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case java.sql.Types.DATE:
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column.setType(IFeatureAttributeDescriptor.TYPE_DATE); |
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default:
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column.setType(IFeatureAttributeDescriptor.TYPE_OBJECT); |
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} |
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} catch (java.sql.SQLException e){
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throw new SQLException("","load attribute definition",e); |
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} |
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return column;
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} |
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private static DefaultAttributeDescriptor getAttributeFromJDBC(Connection conn, ResultSet rsMetadata) throws SQLException{ |
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DefaultAttributeDescriptor column= new DefaultAttributeDescriptor();
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try {
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column.setName(rsMetadata.getString("COLUMN_NAME"));
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/*
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TYPE_BYTE = "BYTE";
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TYPE_BOOLEAN = "BOOLEAN";
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TYPE_INT = "INTEGER";
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TYPE_LONG = "LONG";
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TYPE_FLOAT = "FLOAT";
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TYPE_DOUBLE = "DOUBLE";
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TYPE_STRING = "STRING";
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TYPE_DATE = "DATE";
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TYPE_GEOMETRY = "GEOMETRY";
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TYPE_OBJECT = "OBJECT";
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TYPE_FEATURE = "FEATURE";
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*/
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switch (rsMetadata.getInt("DATA_TYPE")) { |
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case java.sql.Types.INTEGER:
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column.setType(IFeatureAttributeDescriptor.TYPE_INT); |
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case java.sql.Types.BIGINT:
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column.setType(IFeatureAttributeDescriptor.TYPE_LONG); |
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case java.sql.Types.REAL:
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column.setType(IFeatureAttributeDescriptor.TYPE_DOUBLE); |
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column.setPrecision(rsMetadata.getInt("DECIMAL_DIGITS"));
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case java.sql.Types.DOUBLE:
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column.setType(IFeatureAttributeDescriptor.TYPE_DOUBLE); |
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column.setPrecision(rsMetadata.getInt("DECIMAL_DIGITS"));
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case java.sql.Types.CHAR:
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column.setType(IFeatureAttributeDescriptor.TYPE_STRING); |
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column.setSize(rsMetadata.getInt("COLUMN_SIZE"));
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case java.sql.Types.VARCHAR:
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column.setType(IFeatureAttributeDescriptor.TYPE_STRING); |
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column.setSize(rsMetadata.getInt("COLUMN_SIZE"));
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case java.sql.Types.FLOAT:
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column.setType(IFeatureAttributeDescriptor.TYPE_FLOAT); |
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column.setSize(rsMetadata.getInt("COLUMN_SIZE"));
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case java.sql.Types.DECIMAL:
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column.setType(IFeatureAttributeDescriptor.TYPE_FLOAT); |
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column.setSize(rsMetadata.getInt("COLUMN_SIZE"));
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column.setPrecision(rsMetadata.getInt("DECIMAL_DIGITS"));
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case java.sql.Types.DATE:
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column.setType(IFeatureAttributeDescriptor.TYPE_DATE); |
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default:
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//FIXME: Falta comprobar si es geometrica!!!
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column.setType(IFeatureAttributeDescriptor.TYPE_OBJECT); |
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} |
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} catch (java.sql.SQLException e){
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throw new SQLException("","load attribute definition",e); |
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} |
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return column;
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} |
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static void initializeTableEPSG_and_shapeType(Connection conn,String tableID, DBFeatureType dbld) throws ReadException { |
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try {
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Statement stAux = conn.createStatement();
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// String sql = "SELECT * FROM GEOMETRY_COLUMNS WHERE F_TABLE_NAME = '"
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// + getTableName() + "' AND F_GEOMETRY_COLUMN = '" + getLyrDef().getFieldGeometry() + "'";
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String sql= "SELECT SRID("+dbld.getDefaultGeometry()+"), GeometryType("+dbld.getDefaultGeometry()+") FROM "+tableID +" WHERE "+dbld.getDefaultGeometry()+" is not null LIMIT 1"; |
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ResultSet rs = stAux.executeQuery(sql);
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if(!rs.next()){
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dbld.setDefaultSRS("");
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dbld.setGeometryTypes(new int[]{FShape.MULTI}); |
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return;
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} |
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dbld.setDefaultSRS("EPSG:"+rs.getInt(1)); |
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String geometryType = rs.getString(2); |
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int shapeType = FShape.MULTI;
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if (geometryType.compareToIgnoreCase("Point") == 0) |
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shapeType = FShape.POINT; |
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else if (geometryType.compareToIgnoreCase("LineString") == 0) |
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shapeType = FShape.LINE; |
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else if (geometryType.compareToIgnoreCase("Polygon") == 0) |
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shapeType = FShape.POLYGON; |
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else if (geometryType.compareToIgnoreCase("MultiPoint") == 0) |
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shapeType = FShape.POINT; |
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else if (geometryType.compareToIgnoreCase("MultiLineString") == 0) |
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shapeType = FShape.LINE; |
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else if (geometryType.compareToIgnoreCase("MultiPolygon") == 0) |
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shapeType = FShape.POLYGON; |
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dbld.setGeometryTypes(new int[]{shapeType}); |
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rs.close(); |
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} catch (java.sql.SQLException e) {
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dbld.setDefaultSRS("");
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dbld.setGeometryTypes(new int[]{FShape.MULTI}); |
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throw new ReadException("H2DriverUtils.getTableEPSG_and_shapeType",e); |
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} |
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} |
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static String getConnectionResourceID(String dbUrl,String dbUser){ |
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return H2Driver.DRIVER_NAME+";"+dbUrl+";"+dbUser; |
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} |
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static String getJDBCUrl(String host,String db){ |
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String url;
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url = "jdbc:h2:tcp://"+host;
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if (db == null || db == ""){ |
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url=url+"/default";
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}else {
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url=url+"/"+db;
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} |
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return url;
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} |
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static Connection getConnection(String dbUrl,String dbUser, String dbPass) throws InitializeException{ |
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//TODO: Aqu? habria que implementar la llamada
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// al Resource Manager para comprobar si ya hay
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// una connexion a la BD
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String connID = getConnectionResourceID(dbUrl, dbUser);
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Connection conn = null; |
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// IResource res = ResourceManager.getResourceManager().getResource(connID);
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try {
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Class.forName("org.h2.Driver"); |
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} catch (ClassNotFoundException e) { |
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throw new JDBCDriverNotFoundException("org.h2.Driver",e); |
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} |
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try {
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conn = DriverManager.getConnection(dbUrl, dbUser, dbPass);
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conn.setAutoCommit(false);
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} catch (java.sql.SQLException e1) {
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throw new InitializeException("H2Driver",e1); |
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} |
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//TODO: Registrar en el Resource manager
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// ResourceManager.getResourceManager().addResource(res);
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return conn;
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} |
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static IFeature createFeature(H2Driver driver,ResultSet rs,DBFeatureType featureType) throws ReadException{ |
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WKBParser2 wkbParser = new WKBParser2();
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H2Feature feature=null;
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String pk;
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try {
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pk = rs.getString(featureType.getFieldId()); |
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feature=new H2Feature(featureType,driver,pk);
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for (int fieldId = 2; fieldId <= featureType.size(); fieldId++) { |
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IFeatureAttributeDescriptor fad=(IFeatureAttributeDescriptor)featureType.get(fieldId); |
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if (fad.getDataType().equals(IFeatureAttributeDescriptor.TYPE_GEOMETRY)) {
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byte[] data = rs.getBytes(featureType.getDefaultGeometry()); |
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IGeometry geom = wkbParser.parse(data); |
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feature.setDefaultGeometry(geom); |
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feature.set(fieldId-2,geom);
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} else {
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feature.set(fieldId, rs.getObject(fieldId)); |
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} |
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} |
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return feature;
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} catch (java.sql.SQLException e) {
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throw new ReadException("CreateFeature",e); |
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} |
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} |
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static String objectToSqlString(Object obj){ |
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if (obj instanceof String){ |
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return "'"+ scapeString((String)obj) +"'"; |
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} else if (obj == null){ |
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return "null"; |
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}else{
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// OJO con otros tipos!!
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return obj.toString();
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} |
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} |
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static String scapeString(String str){ |
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return str.replace("'", "''"); |
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} |
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} |