root / branches / v2_0_0_prep / libraries / libFMap_daldb / src / org / gvsig / fmap / dal / store / postgesql / PostgreSQLStoreProvider.java @ 27525
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 IVER T.I {{Task}}
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*/
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package org.gvsig.fmap.dal.store.postgesql; |
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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.dal.DataServerExplorer; |
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import org.gvsig.fmap.dal.DataTypes; |
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import org.gvsig.fmap.dal.exception.CloseException; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.exception.InitializeException; |
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import org.gvsig.fmap.dal.exception.OpenException; |
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import org.gvsig.fmap.dal.exception.ReadException; |
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import org.gvsig.fmap.dal.feature.EditableFeatureType; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.dal.feature.exception.PerformEditingException; |
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import org.gvsig.fmap.dal.feature.spi.FeatureData; |
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import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices; |
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import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
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import org.gvsig.fmap.dal.feature.spi.FeatureStoreProvider; |
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import org.gvsig.fmap.dal.feature.spi.FeatureStoreProviderServices; |
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import org.gvsig.fmap.dal.resource.exception.ResourceBeginException; |
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import org.gvsig.fmap.dal.resource.exception.ResourceException; |
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import org.gvsig.fmap.dal.resource.spi.ResourceConsumer; |
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import org.gvsig.fmap.dal.resource.spi.ResourceProvider; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCResource; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCStoreProvider; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dynobject.DelegatedDynObject; |
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import org.gvsig.tools.dynobject.DynClass; |
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import org.gvsig.tools.dynobject.DynObjectManager; |
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import org.gvsig.tools.persistence.PersistenceException; |
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import org.gvsig.tools.persistence.PersistentState; |
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public class PostgreSQLStoreProvider extends JDBCStoreProvider |
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implements ResourceConsumer {
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public static String NAME = "PostgreSQLStore"; |
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public static String DESCRIPTION = "PostgreSQL source"; |
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private static final String DYNCLASS_NAME = "PostgreSQLStore"; |
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private static DynClass DYNCLASS = null; |
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protected PostgreSQLStoreParameters params;
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protected JDBCResource resource;
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protected boolean directSQLMode; |
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protected static void registerDynClass() { |
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DynObjectManager dynman = ToolsLocator.getDynObjectManager(); |
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DynClass dynClass; |
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if (DYNCLASS == null) { |
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dynClass = dynman.add(DYNCLASS_NAME, DESCRIPTION); |
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dynClass.extend(dynman.get(FeatureStore.DYNCLASS_NAME)); |
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DYNCLASS = dynClass; |
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} |
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} |
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public PostgreSQLStoreProvider() {
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super();
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} |
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public PostgreSQLStoreProvider(PostgreSQLStoreParameters params)
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throws InitializeException {
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super();
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this.init(params);
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} |
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protected void init(PostgreSQLStoreParameters params) |
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throws InitializeException {
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this.params = params;
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this.dynObject = (DelegatedDynObject) ToolsLocator
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.getDynObjectManager().createDynObject(DYNCLASS); |
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this.dynObject.setDynValue("DefaultSRS", null); |
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this.dynObject.setDynValue("Envelope", null); |
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resource = (PostgreSQLResource) this.createResource(
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PostgreSQLResource.NAME, |
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new Object[] { params.getHost(), |
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params.getPort(), params.getDBName(), params.getUser(), |
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params.getPassword(), params.getUseSSL() }); |
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resource.addConsumer(this);
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if (params.getSQL() != null && (params.getSQL()).trim().length() > 0) { |
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directSQLMode = true;
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} |
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} |
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protected String compoundCountSelect(String filter) { |
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if (this.directSQLMode) { |
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return null; |
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} |
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// Select
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StringBuilder sql = new StringBuilder(); |
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sql.append("Select count(");
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String[] pkFields = params.getPkFields(); |
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if (pkFields != null && pkFields.length == 1) { |
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sql.append(pkFields[1]);
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} else {
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sql.append('*');
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} |
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sql.append(") ");
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sql.append(params.tableID()); |
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sql.append(' ');
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appendWhere(sql, filter); |
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return sql.toString();
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} |
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private void appendWhere(StringBuilder sql, String filter) { |
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String initialFilter = params.getInitialFilter();
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if ((initialFilter != null && initialFilter.length() != 0) |
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|| (filter != null && filter.length() != 0)) { |
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sql.append("where (");
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if (initialFilter != null && initialFilter.length() != 0 |
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&& filter != null && filter.length() != 0) { |
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// initialFilter + filter
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sql.append('(');
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sql.append(initialFilter); |
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sql.append(") and (");
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sql.append(filter); |
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sql.append(')');
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} else if (initialFilter != null && initialFilter.length() != 0) { |
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// initialFilter only
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sql.append(initialFilter); |
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} else {
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// filter only
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sql.append(filter); |
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} |
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sql.append(") ");
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} |
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} |
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protected String compoundSelect(String[] fields, String filter, |
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String order,
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long limit, long offset) { |
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StringBuilder sql = new StringBuilder(); |
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if (directSQLMode) {
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if (filter != null || order != null) { |
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// FIXME
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throw new UnsupportedOperationException(); |
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} |
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sql.append(params.getSQL()); |
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sql.append(' ');
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} else {
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// Select
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sql.append("Select ");
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if (fields == null || fields.length == 0) { |
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sql.append("* ");
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} else {
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for (int i = 0; i < fields.length - 1; i++) { |
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sql.append(fields[i]); |
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sql.append(", ");
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} |
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sql.append(fields[fields.length - 1]);
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String[] pkFields = params.getPkFields(); |
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if (pkFields != null && pkFields.length > 0) { |
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// checks for pk fields are in select
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boolean toAdd;
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for (int i = 0; i < pkFields.length; i++) { |
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toAdd = true;
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for (int j = 0; j < fields.length; j++) { |
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if (pkFields[i].equals(fields[j])) {
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toAdd = false;
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break;
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} |
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if (toAdd) {
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sql.append(", ");
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sql.append(pkFields[i]); |
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} |
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} |
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} |
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sql.append(' ');
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} |
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} |
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// table
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sql.append("from ");
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sql.append(params.tableID()); |
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sql.append(' ');
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// Where
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appendWhere(sql, filter); |
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// Order
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if ((params.getInitialOrder() != null && params |
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.getInitialOrder().length() != 0)
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|| (order != null && order.length() != 0)) { |
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sql.append("order by ");
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if (order != null && order.length() != 0) { |
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// order
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sql.append(order); |
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} else {
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// initial order
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sql.append(params.getInitialOrder()); |
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} |
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sql.append(' ');
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} |
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} |
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// limit
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if (limit >= 1) { |
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sql.append("limit ");
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sql.append(limit); |
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sql.append(' ');
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} |
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// offset
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if (offset >= 1) { |
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sql.append("offset ");
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sql.append(offset); |
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sql.append(' ');
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} |
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return sql.toString();
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} |
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public FeatureStoreProvider initialize(FeatureStoreProviderServices store)
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throws InitializeException {
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super.initialize(store);
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this.initFeatureType();
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return this; |
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} |
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protected void initFeatureType() throws InitializeException { |
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try {
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open(); |
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resource.begin(); |
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} catch (DataException e) {
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throw new InitializeException(this.getName(), e); |
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} |
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EditableFeatureType edFType = this.store.createFeatureType();
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try {
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String sql = compoundSelect(params.getFields(), null, null, |
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1, 0); |
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PostgreSQLUtils.getInstance().loadFeatureType( |
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resource.getConnection(), edFType, params, sql); |
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} catch (DataException e) {
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throw new InitializeException(this.getName(), e); |
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} finally {
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resource.end(); |
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} |
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FeatureType defaultType = edFType.getNotEditableCopy(); |
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List types = new ArrayList(1); |
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types.add(defaultType); |
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this.store.setFeatureTypes(types, defaultType);
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} |
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public DataServerExplorer getExplorer() throws ReadException { |
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// TODO Auto-generated method stub
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return null; |
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} |
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public void performEditing(Iterator deleteds, Iterator inserteds, |
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Iterator updateds) throws PerformEditingException { |
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// TODO Auto-generated method stub
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} |
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public boolean closeResourceRequested(ResourceProvider resource) { |
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// TODO Auto-generated method stub
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return false; |
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} |
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public void resourceChanged(ResourceProvider resource) { |
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// TODO Auto-generated method stub
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} |
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public void append(Feature feature) throws DataException { |
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// TODO Auto-generated method stub
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} |
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public void beginAppend() throws DataException { |
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// TODO Auto-generated method stub
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} |
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public boolean canWriteGeometry(int geometryType) throws DataException { |
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// TODO Auto-generated method stub
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return true; |
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} |
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public Object createNewOID() { |
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// TODO Auto-generated method stub
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return null; |
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} |
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public FeatureSetProvider createSet(FeatureQuery query, FeatureType featureType)
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throws DataException {
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// TODO Auto-generated method stub
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return null; |
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} |
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public void endAppend() throws DataException { |
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// TODO Auto-generated method stub
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} |
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public FeatureData getFeatureDataByReference(
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FeatureReferenceProviderServices reference) throws DataException {
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// TODO Auto-generated method stub
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return null; |
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} |
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public FeatureData getFeatureDataByReference(
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FeatureReferenceProviderServices reference, FeatureType featureType) |
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throws DataException {
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// TODO Auto-generated method stub
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return null; |
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} |
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public int getFeatureReferenceOIDType() { |
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return DataTypes.UNKNOWN;
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} |
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public String getName() { |
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return NAME;
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} |
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public boolean supportsAppendMode() { |
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// TODO Auto-generated method stub
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return false; |
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} |
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public PersistentState getState() throws PersistenceException { |
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// TODO Auto-generated method stub
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return null; |
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} |
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public void loadState(PersistentState state) throws PersistenceException { |
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// TODO Auto-generated method stub
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} |
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public void setState(PersistentState state) throws PersistenceException { |
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// TODO Auto-generated method stub
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} |
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public Iterator getChilds() { |
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// TODO Auto-generated method stub
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return null; |
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} |
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public void open() throws OpenException { |
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if (resource.isOpen()) {
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return;
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} |
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try {
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resource.begin(); |
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} catch (ResourceBeginException e1) {
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throw new OpenException(this.getName(), e1); |
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} |
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try {
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resource.connect(); |
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// TODO load metadata if is needed
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} catch (DataException e) {
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throw new OpenException(this.getName(), e); |
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} finally {
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resource.end(); |
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} |
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} |
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public boolean allowWrite() { |
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return (!directSQLMode) && params.getPkFields() != null |
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&& params.getPkFields().length > 0;
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} |
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public void close() throws CloseException { |
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super.close();
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try {
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this.resource.closeRequest();
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} catch (ResourceException e) {
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throw new CloseException(this.getName(), e); |
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} |
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} |
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public Object getSourceId() { |
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return this.params.getSourceId(); |
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} |
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} |