svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.db / org.gvsig.fmap.dal.db.jdbc / src / main / java / org / gvsig / fmap / dal / store / jdbc / JDBCStoreProviderWriter.java @ 44871
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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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 3
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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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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.fmap.dal.store.jdbc; |
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import java.sql.Connection; |
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import java.sql.PreparedStatement; |
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import java.sql.SQLException; |
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import java.sql.Statement; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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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.exception.DataException; |
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import org.gvsig.fmap.dal.exception.InitializeException; |
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureRules; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.dal.feature.FeatureType.FeatureTypeChanged; |
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import org.gvsig.fmap.dal.feature.exception.PerformEditingException; |
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import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
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import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices; |
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import org.gvsig.fmap.dal.spi.DataStoreProviderServices; |
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import org.gvsig.fmap.dal.store.db.FeatureTypeHelper; |
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCExecutePreparedSQLException; |
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCExecuteSQLException; |
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCPreparingSQLException; |
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCSQLException; |
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCUpdateWithoutChangesException; |
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import org.gvsig.tools.dynobject.DynObject; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/**
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* @author jmvivo
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*
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*/
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public class JDBCStoreProviderWriter extends JDBCStoreProvider { |
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final static private Logger logger = LoggerFactory |
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.getLogger(JDBCStoreProviderWriter.class); |
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protected Appender appender;
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public JDBCStoreProviderWriter(JDBCStoreParameters params,
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DataStoreProviderServices storeServices) |
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throws InitializeException {
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super(params, storeServices);
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this.appender = this.createAppender(); |
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} |
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protected JDBCStoreProviderWriter(JDBCStoreParameters params,
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DataStoreProviderServices storeServices, DynObject metadata) |
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throws InitializeException {
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super(params, storeServices, metadata);
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this.appender = this.createAppender(); |
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} |
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protected Appender createAppender() {
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return new JDBCAppender(this); |
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} |
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public boolean supportsAppendMode() { |
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return true; |
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} |
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public void endAppend() throws DataException { |
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this.appender.end();
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} |
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public void beginAppend() throws DataException { |
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this.appender.begin();
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} |
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public void append(final FeatureProvider featureProvider) throws DataException { |
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this.appender.append(featureProvider);
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} |
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protected void addToListFeatureValues(FeatureProvider featureProvider, |
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FeatureAttributeDescriptor attrOfList, |
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FeatureAttributeDescriptor attr, List<Object> values) throws DataException { |
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if (attr == null) { |
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if (attrOfList.isPrimaryKey()) {
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throw new RuntimeException("pk attribute '" |
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+ attrOfList.getName() + "' not found in feature");
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} |
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values.add(helper |
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.dalValueToJDBC(attr, attrOfList.getDefaultValue())); |
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} else {
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values.add(helper.dalValueToJDBC(attr, featureProvider.get(attr |
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.getIndex()))); |
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} |
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} |
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protected void addToListFeatureValues(FeatureProvider featureProvider, |
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List<FeatureAttributeDescriptor> attributes, List<Object> values) throws DataException { |
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FeatureAttributeDescriptor attr, attrOfList; |
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FeatureType fType = featureProvider.getType(); |
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for (int i = 0; i < attributes.size(); i++) { |
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attrOfList = (FeatureAttributeDescriptor) attributes.get(i); |
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attr = fType.getAttributeDescriptor(attrOfList.getName()); |
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addToListFeatureValues(featureProvider, attrOfList, attr, values); |
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} |
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} |
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protected void appendToSQLPreparedPkWhereClause(StringBuilder sql, |
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List<FeatureAttributeDescriptor> pkAttributes) {
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sql.append(" Where ");
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FeatureAttributeDescriptor attr; |
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for (int i = 0; i < pkAttributes.size() - 1; i++) { |
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attr = (FeatureAttributeDescriptor) pkAttributes.get(i); |
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sql.append(helper.escapeFieldName(attr.getName())); |
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sql.append(" = ? AND ");
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} |
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attr = (FeatureAttributeDescriptor) pkAttributes.get(pkAttributes |
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.size() - 1);
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sql.append(helper.escapeFieldName(attr.getName())); |
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sql.append(" = ? ");
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} |
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protected void executeRemovePreparedStatement(Connection conn, String sql, |
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List<FeatureAttributeDescriptor> attributes, Iterator<FeatureReferenceProviderServices> featureReferences) throws DataException { |
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PreparedStatement st;
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try {
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st = conn.prepareStatement(sql); |
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} catch (SQLException e) { |
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throw new JDBCPreparingSQLException(sql, e); |
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} |
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try {
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List<Object> values = new ArrayList<Object>(); |
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FeatureReferenceProviderServices featureRef; |
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// FeatureType featureType;
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while (featureReferences.hasNext()) {
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st.clearParameters(); |
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featureRef = featureReferences.next(); |
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values.clear(); |
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// featureType = this.getFeatureStore()
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// .getFeatureType(featureRef.getFeatureTypeId());
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Iterator<FeatureAttributeDescriptor> iter = attributes.iterator();
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FeatureAttributeDescriptor attr; |
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while (iter.hasNext()) {
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attr = iter.next(); |
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values.add( helper.dalValueToJDBC(attr, featureRef |
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.getKeyValue(attr.getName()))); |
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} |
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for (int i = 0; i < values.size(); i++) { |
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st.setObject(i + 1, values.get(i));
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} |
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try {
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int nAffected =JDBCHelper.executeUpdate(st);
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if (nAffected == 0) { |
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throw new JDBCUpdateWithoutChangesException(sql, values); |
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} |
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if (nAffected > 1){ |
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logger.warn("Remove statement affectst to {} rows: {}",
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nAffected, sql); |
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} |
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} catch (SQLException e) { |
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throw new JDBCExecutePreparedSQLException(sql, values, e); |
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} |
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} |
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} catch (SQLException e) { |
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throw new JDBCSQLException(e); |
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} finally {
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try {st.close();} catch (SQLException e) { }; |
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} |
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} |
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protected void executeUpdatePreparedStatement(Connection conn, String sql, |
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List<FeatureAttributeDescriptor> attributes, Iterator<FeatureProvider> featureProviders) throws DataException { |
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PreparedStatement st;
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try {
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st = conn.prepareStatement(sql); |
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} catch (SQLException e) { |
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throw new JDBCPreparingSQLException(sql, e); |
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} |
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try {
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List<Object> values = new ArrayList<Object>(); |
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FeatureProvider featureProvider; |
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while (featureProviders.hasNext()) {
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st.clearParameters(); |
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featureProvider = (FeatureProvider) featureProviders.next(); |
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values.clear(); |
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addToListFeatureValues(featureProvider, attributes, values); |
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for (int i = 0; i < values.size(); i++) { |
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st.setObject(i + 1, values.get(i));
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} |
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try {
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if ( JDBCHelper.executeUpdate(st) == 0) { |
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throw new JDBCUpdateWithoutChangesException(sql, values); |
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} |
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} catch (SQLException e) { |
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throw new JDBCExecutePreparedSQLException(sql, values, e); |
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} |
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} |
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} catch (SQLException e) { |
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throw new JDBCSQLException(e); |
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} finally {
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try {st.close();} catch (SQLException e) { }; |
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} |
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} |
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protected void performDeletes(Connection conn, Iterator<FeatureReferenceProviderServices> deleteds, List<FeatureAttributeDescriptor> pkAttributes) |
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throws DataException {
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if (pkAttributes.size() < 0) { |
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throw new RuntimeException("Operation requires missing pk"); |
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} |
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// ************ Prepare SQL ****************
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StringBuilder sqlb = new StringBuilder(); |
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sqlb.append("Delete from ");
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sqlb.append(getJDBCParameters().tableID()); |
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appendToSQLPreparedPkWhereClause(sqlb, pkAttributes); |
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String sql = sqlb.toString();
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// ************ Prepare SQL (end) ****************
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executeRemovePreparedStatement(conn, sql, pkAttributes, deleteds); |
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} |
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protected String getSqlStatementAddField(FeatureAttributeDescriptor attr, |
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List<String> additionalStatement) throws DataException { |
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StringBuilder strb = new StringBuilder(); |
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strb.append("ADD ");
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strb.append(this.helper.getSqlFieldDescription(attr));
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return strb.toString();
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} |
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protected String getSqlStatementDropField(FeatureAttributeDescriptor attr,List<String> additionalStatement) { |
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// DROP [ COLUMN ] column
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return " DROP COLUMN " |
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+ this.helper.escapeFieldName(attr.getName());
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} |
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protected List<String> getSqlStatementAlterField( |
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FeatureAttributeDescriptor attrOrg, |
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FeatureAttributeDescriptor attrTrg, List<String> additionalStatement) |
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throws DataException {
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//
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List<String> actions = new ArrayList<String>(); |
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StringBuilder strb;
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if (attrOrg.getDataType() != attrTrg.getDataType()) {
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// ALTER COLUMN {col} TYPE {type} character varying(35)
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strb = new StringBuilder(); |
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strb.append("ALTER COLUMN ");
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strb.append(helper.escapeFieldName(attrTrg.getName())); |
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strb.append(" ");
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strb.append(helper.getSqlColumnTypeDescription(attrTrg)); |
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actions.add(strb.toString()); |
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} |
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if (attrOrg.allowNull() != attrTrg.allowNull()) {
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// ALTER [ COLUMN ] column { SET | DROP } NOT NULL
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strb = new StringBuilder(); |
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strb.append("ALTER COLUMN ");
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strb.append(helper.escapeFieldName(attrTrg.getName())); |
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strb.append(' ');
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if (attrTrg.allowNull()) {
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strb.append("SET ");
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} else {
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strb.append("DROP ");
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} |
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strb.append("NOT NULL");
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actions.add(strb.toString()); |
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} |
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if (attrOrg.getDefaultValue() != attrTrg.getDefaultValue()) {
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if (attrTrg.getDefaultValue() == null) { |
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// ALTER [ COLUMN ] column DROP DEFAULT
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strb = new StringBuilder(); |
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strb.append("ALTER COLUMN ");
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strb.append(helper.escapeFieldName(attrTrg.getName())); |
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strb.append(" DROP DEFAULT");
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actions.add(strb.toString()); |
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} else if (!attrTrg.getDefaultValue().equals( |
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attrOrg.getDefaultValue())) { |
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// ALTER [ COLUMN ] column DROP DEFAULT
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strb = new StringBuilder(); |
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strb.append("ALTER COLUMN ");
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strb.append(helper.escapeFieldName(attrTrg.getName())); |
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strb.append(" SET DEFAULT");
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strb.append(helper.dalValueToJDBC(attrTrg, attrTrg |
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.getDefaultValue())); |
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actions.add(strb.toString()); |
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} |
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} |
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return actions;
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} |
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protected void performUpdateTable(Connection conn, FeatureType original, |
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FeatureType target) throws DataException {
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/*
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*
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* ALTER TABLE [ ONLY ] name [ * ] action [, ... ]
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*/
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List<String> toDrop = new ArrayList<String>(); |
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List<String> toAdd = new ArrayList<String>(); |
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List<String> toAlter = new ArrayList<String>(); |
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List<String> additionalStatement = new ArrayList<String>(); |
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FeatureAttributeDescriptor attrOrg; |
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FeatureAttributeDescriptor attrTrg; |
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Iterator<FeatureAttributeDescriptor> attrs = FeatureTypeHelper.iterator(original);
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while (attrs.hasNext()) {
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attrOrg = (FeatureAttributeDescriptor) attrs.next(); |
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attrTrg = target.getAttributeDescriptor(attrOrg.getName()); |
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if (attrTrg == null) { |
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toDrop.add(getSqlStatementDropField(attrOrg, |
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additionalStatement)); |
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} else {
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toAlter.addAll(getSqlStatementAlterField(attrOrg, attrTrg,additionalStatement)); |
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} |
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} |
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attrs = FeatureTypeHelper.iterator(target); |
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while (attrs.hasNext()) {
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attrTrg = (FeatureAttributeDescriptor) attrs.next(); |
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if (original.getAttributeDescriptor(attrTrg.getName()) == null) { |
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toAdd.add(getSqlStatementAddField(attrTrg, |
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additionalStatement)); |
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} |
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} |
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StringBuilder sqlb = new StringBuilder(); |
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sqlb.append("ALTER TABLE ");
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sqlb.append(getJDBCParameters().tableID()); |
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sqlb.append(' ');
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List<String> actions = new ArrayList<String>(); |
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actions.addAll(toDrop); |
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actions.addAll(toAlter); |
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actions.addAll(toAdd); |
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Iterator<String> it = actions.iterator(); |
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while (it.hasNext()) {
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if (it.next() == null) { |
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it.remove(); |
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} |
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} |
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it = additionalStatement.iterator(); |
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while (it.hasNext()) {
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if (it.next() == null) { |
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it.remove(); |
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} |
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} |
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if (actions.size() < 1) { |
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return;
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} |
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helper.stringJoin(actions, ", ", sqlb);
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String sql = sqlb.toString();
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Statement st = null; |
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try {
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st = conn.createStatement(); |
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} catch (SQLException e1) { |
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throw new JDBCSQLException(e1); |
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} |
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try {
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JDBCHelper.execute(st, sql); |
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Iterator<String> iter = additionalStatement.iterator(); |
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while (iter.hasNext()) {
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sql = (String) iter.next();
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JDBCHelper.execute(st, sql); |
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} |
409 |
} catch (SQLException e1) { |
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throw new JDBCExecuteSQLException(sql, e1); |
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} finally {
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try {
|
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st.close(); |
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} catch (Exception e) { |
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logger.error("Exception closing statement", e);
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} |
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; |
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} |
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} |
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|
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|
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public void perfomInsert(Connection conn, PreparedStatement insertSt, |
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String sql, FeatureProvider feature, List<FeatureAttributeDescriptor> attributes) |
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throws DataException {
|
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|
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try {
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insertSt.clearParameters(); |
429 |
List<Object> values = new ArrayList<Object>(); |
430 |
addToListFeatureValues(feature, attributes, values); |
431 |
// FeatureAttributeDescriptor attr;
|
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int j = 1; |
433 |
for (int i = 0; i < values.size(); i++) { |
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insertSt.setObject(j, values.get(i)); |
435 |
j++; |
436 |
} |
437 |
if (logger.isDebugEnabled()) {
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logger.debug("Executing insert. sql={} value={}", new Object[] { |
439 |
sql, values }); |
440 |
} |
441 |
try {
|
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JDBCHelper.execute(insertSt, sql); |
443 |
} catch (SQLException e) { |
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throw new JDBCExecutePreparedSQLException(sql, values, e); |
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} |
446 |
|
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} catch (Exception e1) { |
448 |
throw new JDBCExecuteSQLException(sql, e1); |
449 |
} |
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} |
451 |
|
452 |
|
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protected void prepareAttributeForUpdate(FeatureAttributeDescriptor attr, |
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List<String> values) { |
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values.add(helper.escapeFieldName(attr.getName()) + " = ?");
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} |
457 |
|
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protected void prepareAttributeForInsert(FeatureAttributeDescriptor attr, |
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List<String> fields, List<String> values) { |
460 |
|
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fields.add(helper.escapeFieldName(attr.getName())); |
462 |
values.add("?");
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463 |
|
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} |
465 |
|
466 |
|
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protected void prepareSQLAndAttributeListForInsert(StringBuilder sqlb, |
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List<FeatureAttributeDescriptor> attributes) throws DataException { |
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/*
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* INSERT INTO table [ ( column [, ...] ) ] { DEFAULT VALUES | VALUES (
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* { expression | DEFAULT } [, ...] ) [, ...] | query } [ RETURNING * |
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* output_expression [ AS output_name ] [, ...] ]
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*/
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474 |
|
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sqlb.append("INSERT INTO ");
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476 |
sqlb.append(getJDBCParameters().tableID()); |
477 |
|
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sqlb.append(" (");
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479 |
|
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FeatureType type = this.getFeatureStore().getDefaultFeatureType();
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481 |
|
482 |
List<String> fields = new ArrayList<String>(); |
483 |
List<String> values = new ArrayList<String>(); |
484 |
|
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Iterator<FeatureAttributeDescriptor> iter = FeatureTypeHelper.iterator(type);
|
486 |
FeatureAttributeDescriptor attr; |
487 |
while (iter.hasNext()) {
|
488 |
attr = iter.next(); |
489 |
if (attr.isAutomatic() || attr.isReadOnly()) {
|
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continue;
|
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} |
492 |
attributes.add(attr); |
493 |
prepareAttributeForInsert(attr, fields, values); |
494 |
|
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} |
496 |
if (attributes.size() < 1) { |
497 |
throw new RuntimeException("no fields to set"); |
498 |
} |
499 |
|
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helper.stringJoin(fields, ", ", sqlb);
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|
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sqlb.append(") VALUES (");
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503 |
helper.stringJoin(values, ", ", sqlb);
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|
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sqlb.append(") ");
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506 |
|
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} |
508 |
|
509 |
|
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protected void performInserts(Connection conn, Iterator<FeatureProvider> inserteds) |
511 |
throws DataException {
|
512 |
|
513 |
StringBuilder sqlb = new StringBuilder(); |
514 |
List<FeatureAttributeDescriptor> attrs = new ArrayList<FeatureAttributeDescriptor>(); |
515 |
|
516 |
prepareSQLAndAttributeListForInsert(sqlb, attrs); |
517 |
|
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String sql = sqlb.toString();
|
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PreparedStatement st;
|
520 |
try {
|
521 |
st = conn.prepareStatement(sql); |
522 |
} catch (SQLException e) { |
523 |
throw new JDBCPreparingSQLException(sql, e); |
524 |
} |
525 |
try {
|
526 |
while (inserteds.hasNext()) {
|
527 |
perfomInsert(conn, st, sql, inserteds.next(), |
528 |
attrs); |
529 |
} |
530 |
} finally {
|
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try {st.close();} catch (SQLException e) {logger.error("Error closing statement", e);}; |
532 |
} |
533 |
} |
534 |
|
535 |
protected void performUpdates(Connection conn, Iterator<FeatureProvider> updateds, |
536 |
List<FeatureAttributeDescriptor> pkAttributes) throws DataException { |
537 |
/*
|
538 |
* UPDATE [ ONLY ] table [ [ AS ] alias ] SET { column = { expression |
|
539 |
* DEFAULT } | ( column [, ...] ) = ( { expression | DEFAULT } [, ...] )
|
540 |
* } [, ...] [ FROM fromlist ] [ WHERE condition ] [ RETURNING * |
|
541 |
* output_expression [ AS output_name ] [, ...] ]
|
542 |
*/
|
543 |
|
544 |
if (pkAttributes.size() < 0) { |
545 |
throw new RuntimeException("Operation requires missing pk"); |
546 |
} |
547 |
|
548 |
// ************ Prepare SQL ****************
|
549 |
|
550 |
StringBuilder sqlb = new StringBuilder(); |
551 |
sqlb.append("UPDATE ");
|
552 |
sqlb.append(getJDBCParameters().tableID()); |
553 |
|
554 |
sqlb.append(" SET ");
|
555 |
|
556 |
List<String> values = new ArrayList<String>(); |
557 |
|
558 |
FeatureType type = this.getFeatureStore().getDefaultFeatureType();
|
559 |
|
560 |
Iterator<FeatureAttributeDescriptor> iter = FeatureTypeHelper.iterator(type);
|
561 |
FeatureAttributeDescriptor attr; |
562 |
List<FeatureAttributeDescriptor> updateAttrs = new ArrayList<FeatureAttributeDescriptor>(); |
563 |
while (iter.hasNext()) {
|
564 |
attr = iter.next(); |
565 |
if (attr.isPrimaryKey() || attr.isAutomatic() || attr.isReadOnly()) {
|
566 |
continue;
|
567 |
} |
568 |
updateAttrs.add(attr); |
569 |
prepareAttributeForUpdate(attr, values); |
570 |
|
571 |
} |
572 |
if (updateAttrs.size() < 1) { |
573 |
throw new RuntimeException("no fields to set"); |
574 |
} |
575 |
|
576 |
helper.stringJoin(values, ", ", sqlb);
|
577 |
|
578 |
sqlb.append(' ');
|
579 |
appendToSQLPreparedPkWhereClause(sqlb, pkAttributes); |
580 |
|
581 |
String sql = sqlb.toString();
|
582 |
// ************ Prepare SQL (end) ****************
|
583 |
|
584 |
updateAttrs.addAll(pkAttributes); |
585 |
|
586 |
executeUpdatePreparedStatement(conn, sql, updateAttrs, updateds); |
587 |
} |
588 |
|
589 |
|
590 |
|
591 |
protected TransactionalAction getPerformChangesAction(
|
592 |
final Iterator<FeatureReferenceProviderServices> deleteds, |
593 |
final Iterator<FeatureProvider> inserteds, |
594 |
final Iterator<FeatureProvider> updateds, |
595 |
final Iterator<FeatureTypeChanged> featureTypesChanged) { |
596 |
|
597 |
TransactionalAction action = new TransactionalAction() {
|
598 |
|
599 |
public Object action(Connection conn) throws DataException { |
600 |
|
601 |
if (featureTypesChanged.hasNext()) {
|
602 |
|
603 |
FeatureTypeChanged item = featureTypesChanged.next(); |
604 |
performUpdateTable(conn, item.getSource(), item.getTarget()); |
605 |
} |
606 |
|
607 |
List<FeatureAttributeDescriptor> pkAttributes = null; |
608 |
if (deleteds.hasNext() || updateds.hasNext()) {
|
609 |
pkAttributes = Arrays.asList(getFeatureStore()
|
610 |
.getDefaultFeatureType() |
611 |
.getPrimaryKey()); |
612 |
} |
613 |
|
614 |
if (deleteds.hasNext()) {
|
615 |
performDeletes(conn, deleteds, pkAttributes); |
616 |
} |
617 |
|
618 |
if (updateds.hasNext()) {
|
619 |
performUpdates(conn, updateds, pkAttributes); |
620 |
} |
621 |
|
622 |
if (inserteds.hasNext()) {
|
623 |
performInserts(conn, inserteds); |
624 |
} |
625 |
|
626 |
return null; |
627 |
} |
628 |
|
629 |
public boolean continueTransactionAllowed() { |
630 |
return false; |
631 |
} |
632 |
|
633 |
}; |
634 |
|
635 |
return action;
|
636 |
|
637 |
} |
638 |
|
639 |
@SuppressWarnings("unchecked") |
640 |
public void performChanges(Iterator deleteds, Iterator inserteds, |
641 |
Iterator updateds, Iterator featureTypesChanged) |
642 |
throws PerformEditingException {
|
643 |
|
644 |
boolean countChanged = deleteds.hasNext() || inserteds.hasNext();
|
645 |
|
646 |
try {
|
647 |
this.helper.doConnectionAction(getPerformChangesAction(deleteds,
|
648 |
inserteds, updateds, featureTypesChanged)); |
649 |
|
650 |
/*
|
651 |
* Get rules before initializing feature type
|
652 |
*/
|
653 |
FeatureRules old_rules = getFeatureStore().getDefaultFeatureType().getRules(); |
654 |
|
655 |
/*
|
656 |
* This initialization loses the feature type rules
|
657 |
*/
|
658 |
this.initFeatureType();
|
659 |
|
660 |
/*
|
661 |
* Get new feature type, clear rules and add
|
662 |
* the ones saved previously
|
663 |
*/
|
664 |
FeatureType ft = getFeatureStore().getDefaultFeatureType(); |
665 |
FeatureRules new_rules = ft.getRules(); |
666 |
new_rules.clear(); |
667 |
for (int i=0; i<old_rules.size(); i++) { |
668 |
new_rules.add(old_rules.getRule(i)); |
669 |
} |
670 |
// ===================================================
|
671 |
|
672 |
if (countChanged) {
|
673 |
resetCount(); |
674 |
} |
675 |
|
676 |
} catch (Exception e) { |
677 |
throw new PerformEditingException(this.getSourceId().toString(), e); |
678 |
} |
679 |
} |
680 |
|
681 |
|
682 |
public boolean allowWrite() { |
683 |
if (directSQLMode) {
|
684 |
return false; |
685 |
} |
686 |
|
687 |
FeatureType ft = null;
|
688 |
try {
|
689 |
ft = this.getFeatureStore().getDefaultFeatureType();
|
690 |
} catch (DataException e) {
|
691 |
logger.error("While getting default Feature Type", e);
|
692 |
} |
693 |
|
694 |
String[] storePK = getPK(ft); |
695 |
JDBCHelper helper = this.getHelper();
|
696 |
String[] dbPK = null; |
697 |
try {
|
698 |
Connection conn = helper.getConnection();
|
699 |
dbPK = helper.getPksFrom(conn, getJDBCParameters()); |
700 |
conn.close(); |
701 |
} catch (Exception exc) { |
702 |
logger.error("While getting PK from DB", exc);
|
703 |
return false; |
704 |
} |
705 |
return sameStrings(storePK, dbPK);
|
706 |
} |
707 |
|
708 |
private boolean sameStrings(String[] a, String[] b) { |
709 |
|
710 |
if (a==null || b==null || a.length!=b.length || a.length==0) { |
711 |
/*
|
712 |
* Must not be empty
|
713 |
*/
|
714 |
return false; |
715 |
} |
716 |
int len = a.length;
|
717 |
boolean found = false; |
718 |
/*
|
719 |
* Check same
|
720 |
*/
|
721 |
for (int ai=0; ai<len; ai++) { |
722 |
found = false;
|
723 |
for (int bi=0; bi<len; bi++) { |
724 |
if (b[bi].compareTo(a[ai]) == 0) { |
725 |
found = true;
|
726 |
break;
|
727 |
} |
728 |
} |
729 |
if (! found) {
|
730 |
return false; |
731 |
} |
732 |
} |
733 |
return true; |
734 |
} |
735 |
|
736 |
private String[] getPK(FeatureType ft) { |
737 |
|
738 |
List resp = new ArrayList(); |
739 |
FeatureAttributeDescriptor attr; |
740 |
Iterator<FeatureAttributeDescriptor> iter = FeatureTypeHelper.iterator(ft);
|
741 |
while (iter.hasNext()) {
|
742 |
attr = (FeatureAttributeDescriptor) iter.next(); |
743 |
if (attr.isPrimaryKey()) {
|
744 |
resp.add(attr.getName()); |
745 |
} |
746 |
} |
747 |
return (String[]) resp.toArray(new String[0]); |
748 |
} |
749 |
} |