root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / drivers / DefaultDBDriver.java @ 1691
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package com.iver.cit.gvsig.fmap.drivers; |
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import java.awt.geom.Rectangle2D; |
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import java.io.IOException; |
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import java.sql.Connection; |
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import java.sql.ResultSet; |
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import java.sql.ResultSetMetaData; |
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import java.sql.SQLException; |
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import java.sql.Statement; |
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import java.sql.Types; |
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import java.util.Date; |
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import org.postgis.Geometry; |
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import org.postgis.PGbox3d; |
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import org.postgis.Point; |
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import com.hardcode.gdbms.engine.data.DataSource; |
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import com.hardcode.gdbms.engine.data.ReadDriver; |
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import com.hardcode.gdbms.engine.values.Value; |
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import com.hardcode.gdbms.engine.values.ValueFactory; |
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import com.iver.cit.gvsig.fmap.DriverException; |
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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.postgis.WKTParser; |
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import com.vividsolutions.jts.io.ParseException; |
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/**
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* Clase abstracta qu
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*/
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public abstract class DefaultDBDriver implements VectorialDatabaseDriver, ReadDriver { |
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/**
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*
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*/
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protected Connection conn; |
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protected String tableName; |
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protected String whereClause; |
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protected String fields; |
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protected String sqlOrig; |
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protected ResultSet rs; |
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protected int numReg=-1; |
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protected ResultSetMetaData metaData = null; |
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/**
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* @return devuelve la Conexi?n a la base de datos, para que
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* el usuario pueda hacer la consulta que quiera, si lo desea.
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* Por ejemplo, esto puede ser ?til para abrir un cuadro de dialogo
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* avanazado y lanzar peticiones del tipo "Devuelveme un buffer
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* a las autopistas", y con el resultset que te venga, escribir
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* un shape, o cosas as?.
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*/
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public Connection getConnection() |
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{ |
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return conn;
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} |
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public String getFields() |
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{ |
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return fields;
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} |
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public String getWhereClause() |
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{ |
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return whereClause;
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} |
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public String getTableName() |
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{ |
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return tableName;
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} |
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/**
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* @throws DriverIOException
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* @throws DriverException
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* @see com.iver.cit.gvsig.fmap.layers.ReadableVectorial#getShapeCount()
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*/
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public int getShapeCount() throws IOException { |
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if (numReg == -1) |
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{ |
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try
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{ |
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Statement s = conn.createStatement();
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ResultSet r = s.executeQuery("SELECT COUNT(*) AS NUMREG FROM " + tableName + " " + whereClause); |
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r.next(); |
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numReg = r.getInt(1);
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System.err.println("numReg = " + numReg); |
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} |
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catch (SQLException e) |
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{ |
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throw new IOException(e.getMessage()); |
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} |
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} |
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return numReg;
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.layers.ReadableVectorial#getShapeType()
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*/
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public int getShapeType() { |
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return FShape.MULTI;
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} |
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public Class getFieldType(int idField) throws com.hardcode.gdbms.engine.data.DriverException |
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{ |
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String str = ""; |
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try {
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int i = idField + 2; // idField viene basado en 1, y |
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// adem?s nos saltamos el campo de geometry
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str = metaData.getColumnClassName(i); |
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if (metaData.getColumnType(i) == Types.VARCHAR) |
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return Value.VARCHAR;
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if (metaData.getColumnType(i) == Types.FLOAT) |
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return Value.FLOAT;
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if (metaData.getColumnType(i) == Types.DOUBLE) |
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return Value.DOUBLE;
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if (metaData.getColumnType(i) == Types.INTEGER) |
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return Value.INTEGER;
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if (metaData.getColumnType(i) == Types.BIGINT) |
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return Value.BIGINT;
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if (metaData.getColumnType(i) == Types.BIT) |
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return Value.BIT;
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if (metaData.getColumnType(i) == Types.DATE) |
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return Value.DATE;
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} catch (SQLException e) { |
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throw new com.hardcode.gdbms.engine.data.DriverException("Tipo no soportado: " + str); |
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} |
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return null; |
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} |
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/**
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* Obtiene el valor que se encuentra en la fila y columna indicada
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* Esta es la implementaci?n por defecto. Si lo del absolute
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* no va bien, como es el caso del PostGis, el driver lo
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* tiene que reimplementar
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*
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* @param rowIndex fila
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* @param fieldId columna
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*
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* @return subclase de Value con el valor del origen de datos
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*
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* @throws DriverException Si se produce un error accediendo al DataSource
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*/
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public Value getFieldValue(long rowIndex, int idField) |
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throws com.hardcode.gdbms.engine.data.DriverException
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{ |
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int i = (int) (rowIndex + 1); |
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int fieldId = idField+2; |
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try {
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rs.absolute(i); |
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if (metaData.getColumnType(fieldId) == Types.VARCHAR) |
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return ValueFactory.createValue(rs.getString(fieldId));
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if (metaData.getColumnType(fieldId) == Types.FLOAT) |
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return ValueFactory.createValue(rs.getFloat(fieldId));
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if (metaData.getColumnType(fieldId) == Types.DOUBLE) |
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return ValueFactory.createValue(rs.getDouble(fieldId));
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if (metaData.getColumnType(fieldId) == Types.INTEGER) |
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return ValueFactory.createValue(rs.getInt(fieldId));
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if (metaData.getColumnType(fieldId) == Types.BIGINT) |
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return ValueFactory.createValue(rs.getLong(fieldId));
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if (metaData.getColumnType(fieldId) == Types.BIT) |
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return ValueFactory.createValue(rs.getBoolean(fieldId));
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if (metaData.getColumnType(fieldId) == Types.DATE) |
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return ValueFactory.createValue(rs.getDate(fieldId));
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} catch (SQLException e) { |
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throw new com.hardcode.gdbms.engine.data.DriverException("Tipo no soportado: columna " + fieldId ); |
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} |
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return null; |
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} |
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/**
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* Obtiene el n?mero de campos del DataSource
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*
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* @return
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*
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* @throws DriverException Si se produce alg?n error accediendo al
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* DataSource
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*/
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public int getFieldCount() throws com.hardcode.gdbms.engine.data.DriverException |
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{ |
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try {
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// Suponemos que el primer campo es el de las geometries, y no lo
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// contamos
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return rs.getMetaData().getColumnCount()-1; |
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} catch (SQLException e) { |
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throw new com.hardcode.gdbms.engine.data.DriverException(e); |
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} |
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} |
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/**
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* Devuelve el nombre del campo fieldId-?simo
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*
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* @param fieldId ?ndice del campo cuyo nombre se quiere obtener
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*
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* @return
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* @throws com.hardcode.gdbms.engine.data.DriverException
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*
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* @throws DriverException Si se produce alg?n error accediendo al
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* DataSource
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*/
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public String getFieldName(int fieldId) throws com.hardcode.gdbms.engine.data.DriverException |
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{ |
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try {
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return rs.getMetaData().getColumnName(fieldId+2); |
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} catch (SQLException e) { |
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throw new com.hardcode.gdbms.engine.data.DriverException(e); |
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} |
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} |
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/**
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* Obtiene el n?mero de registros del DataSource
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*
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* @return
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*
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* @throws DriverException Si se produce alg?n error accediendo al
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* DataSource
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*/
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public long getRowCount() |
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{ |
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try {
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return getShapeCount();
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} catch (IOException e) { |
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} |
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return -1; |
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} |
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} |