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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 / jdbc2 / spi / operations / PerformChangesOperation.java @ 45140

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/**
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 * gvSIG. Desktop Geographic Information System.
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 *
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 * Copyright (C) 2007-2020 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.jdbc2.spi.operations;
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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.Iterator;
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import java.util.List;
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import org.apache.commons.collections.CollectionUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.gvsig.expressionevaluator.ExpressionBuilder;
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import org.gvsig.expressionevaluator.ExpressionBuilder.Variable;
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import org.gvsig.expressionevaluator.GeometryExpressionBuilder;
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import org.gvsig.fmap.dal.DataTypes;
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import org.gvsig.fmap.dal.exception.DataException;
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;
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import org.gvsig.fmap.dal.feature.FeatureReference;
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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.spi.FeatureProvider;
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import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices;
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import org.gvsig.fmap.dal.feature.spi.FeatureStoreProvider;
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import org.gvsig.fmap.dal.store.jdbc2.JDBCHelper;
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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.JDBCSQLException;
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCUpdateWithoutChangesException;
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import org.gvsig.fmap.dal.store.jdbc2.spi.JDBCSQLBuilderBase;
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import org.gvsig.fmap.dal.store.jdbc2.JDBCUtils;
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import org.gvsig.fmap.dal.store.jdbc2.OperationsFactory.TableReference;
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import static org.gvsig.fmap.dal.store.jdbc2.spi.JDBCSQLBuilderBase.PROP_FEATURE_TYPE;
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import static org.gvsig.fmap.dal.store.jdbc2.spi.JDBCSQLBuilderBase.PROP_TABLE;
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import org.gvsig.tools.dispose.Disposable;
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import org.gvsig.tools.dispose.DisposeUtils;
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@SuppressWarnings("UseSpecificCatch")
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public class PerformChangesOperation extends AbstractConnectionWritableOperation {
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    protected TableReference table;
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    protected FeatureType featureType;
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    protected FeatureType featureTypeSource;
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    protected FeatureType featureTypeTarget;
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    protected Iterator<FeatureReferenceProviderServices> deleteds;
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    protected Iterator<FeatureProvider> updateds;
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    protected Iterator<FeatureProvider> inserteds;
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    protected boolean typeChanged = false;
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    public PerformChangesOperation(JDBCHelper helper) {
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        this(helper, null, null, null, null, null, null);
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    }
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    public PerformChangesOperation(JDBCHelper helper,
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            TableReference table,
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            FeatureType featureType,
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            Iterator<FeatureReferenceProviderServices> deleteds,
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            Iterator<FeatureProvider> inserteds,
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            Iterator<FeatureProvider> updateds,
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            Iterator<FeatureTypeChanged> featureTypesChanged) {
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        super(helper);
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        this.deleteds = deleteds;
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        this.inserteds = inserteds;
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        this.updateds = updateds;
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        this.table = table;
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        this.featureType = featureType;
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        if (featureTypesChanged.hasNext()) {
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            FeatureTypeChanged item = featureTypesChanged.next();
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            this.featureTypeSource = item.getSource();
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            this.featureTypeTarget = item.getTarget();
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            typeChanged = true;
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        } else {
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            this.featureTypeSource = null;
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            this.featureTypeTarget = null;
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            typeChanged = false;
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        }
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    }
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    public boolean isTypeChanged() {
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        return typeChanged;
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    }
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    @Override
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    public Object perform(Connection conn) throws DataException {
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        if (typeChanged) {
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            this.performUpdateTable(conn);
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        }
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        if (deleteds.hasNext()) {
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            performDeletes(conn);
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        }
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        if (updateds.hasNext()) {
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            performUpdates(conn);
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        }
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        if (inserteds.hasNext()) {
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            performInserts(conn);
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        }
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        return true;
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    }
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    public String getDeleteSQL() {
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        JDBCSQLBuilderBase sqlbuilder = createSQLBuilder();
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        return this.getDeleteSQL(sqlbuilder);
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    }
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    public String getDeleteSQL(JDBCSQLBuilderBase sqlbuilder) {
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        ExpressionBuilder expbuilder = sqlbuilder.expression();
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        sqlbuilder.delete().table()
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                .database(this.table.getDatabase())
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                .schema(this.table.getSchema())
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                .name(this.table.getTable());
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        for (FeatureAttributeDescriptor attr : this.featureType) {
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            if (attr.isPrimaryKey()) {
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                sqlbuilder.delete().where().and(
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                        expbuilder.eq(
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                                expbuilder.column(attr.getName()),
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                                expbuilder.parameter(attr.getName()).as_variable()
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                        )
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                );
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            }
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        }
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        if (!sqlbuilder.delete().has_where() ) {
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            throw new RuntimeException("Operation requires missing pk");
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        }
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        sqlbuilder.setProperties(
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                Variable.class, 
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                PROP_TABLE, table
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        );
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        String sql = sqlbuilder.delete().toString();
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        return sql;
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    }
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    public void performDeletes(Connection conn) throws DataException {
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        JDBCSQLBuilderBase sqlbuilder = createSQLBuilder();
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        String sql = getDeleteSQL(sqlbuilder);
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        PreparedStatement st = null;
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        Disposable paramsDisposer = null;
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        try {
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            st = conn.prepareStatement(sql);
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            while (deleteds.hasNext()) {
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                FeatureReference reference = (FeatureReference) deleteds.next();
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                paramsDisposer = sqlbuilder.setParameters(st, reference);
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                int nAffected = JDBCUtils.executeUpdate(st,sql);
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                if (nAffected == 0) {
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                    throw new JDBCUpdateWithoutChangesException(
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                            sqlbuilder.delete().toString(),
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                            null
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                    );
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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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                }
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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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            JDBCUtils.closeQuietly(st);
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            DisposeUtils.disposeQuietly(paramsDisposer);
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        }
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    }
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    public String getInsertSQL() {
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        JDBCSQLBuilderBase sqlbuilder = createSQLBuilder();
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        return this.getInsertSQL(sqlbuilder);
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    }
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    public String getInsertSQL(JDBCSQLBuilderBase sqlbuilder) {
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        GeometryExpressionBuilder expbuilder = sqlbuilder.expression();
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        sqlbuilder.insert().table()
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                .database(this.table.getDatabase())
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                .schema(this.table.getSchema())
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                .name(this.table.getTable());
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        for (FeatureAttributeDescriptor attr : this.featureType) {
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            if( attr.isAutomatic() || attr.isComputed() ) {
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                continue;
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            }
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            if (attr.getType() == DataTypes.GEOMETRY) {
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                sqlbuilder.insert().column().name(attr.getName()).with_value(
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                    expbuilder.parameter(attr.getName()).as_variable()
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                        .srs(
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                            expbuilder.parameter().value(
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                                attr.getSRS()).as_constant()
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                        )
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                );
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            } else {
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                sqlbuilder.insert().column().name(attr.getName()).with_value(
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                        expbuilder.parameter(attr.getName())
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                );
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            }
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        }
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        sqlbuilder.setProperties(
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                Variable.class, 
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                PROP_FEATURE_TYPE, featureType,
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                PROP_TABLE, table
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        );
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        String sql = sqlbuilder.insert().toString();
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        return sql;
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    }
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    public void performInserts(Connection conn) throws DataException {
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        JDBCSQLBuilderBase sqlbuilder = createSQLBuilder();
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        String sql = getInsertSQL(sqlbuilder);
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        PreparedStatement st;
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        Disposable paramsDisposer;
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        try {
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            st = conn.prepareStatement(sql);
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            while (inserteds.hasNext()) {
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                FeatureProvider feature = inserteds.next();
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                paramsDisposer = sqlbuilder.setParameters(st, feature);
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                try {
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                    if (JDBCUtils.executeUpdate(st,sql) == 0) {
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                        throw new JDBCExecuteSQLException(
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                                sqlbuilder.insert().toString(),
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                                null
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                        );
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                    }
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                } finally {
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                    DisposeUtils.disposeQuietly(paramsDisposer);
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                }
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            }
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        } catch (JDBCExecuteSQLException ex) {
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            throw ex;
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        } catch (Exception ex) {
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            throw new JDBCExecuteSQLException(sql,ex);
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        }
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    }
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    public String getUpdateSQL() {
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        JDBCSQLBuilderBase sqlbuilder = createSQLBuilder();
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        return this.getUpdateSQL(sqlbuilder);
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    }
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    public String getUpdateSQL(JDBCSQLBuilderBase sqlbuilder) {
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        GeometryExpressionBuilder expbuilder = sqlbuilder.expression();
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        sqlbuilder.update().table()
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                .database(this.table.getDatabase())
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                .schema(this.table.getSchema())
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                .name(this.table.getTable());
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        for (FeatureAttributeDescriptor attr : this.featureType) {
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            if (attr.isPrimaryKey()) {
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                sqlbuilder.update().where().and(
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                        expbuilder.eq(
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                                expbuilder.column(attr.getName()),
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                                expbuilder.parameter(attr.getName()).as_variable()
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                        )
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                );
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                continue;
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            } 
279
            if ( attr.isAutomatic() || attr.isReadOnly() || attr.isComputed() ) {
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                continue;
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            }
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            if (attr.getType() == DataTypes.GEOMETRY) {
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                if (attr.getSRS()==null) {
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                    throw new RuntimeException("Geometries with null srs are not valid. SRS is required in "+this.table.toString()+"in the field:"+attr.getName());
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                }
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                sqlbuilder.update().column().name(attr.getName()).with_value(
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                    expbuilder.parameter(attr.getName()).as_geometry_variable().srs(
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                        expbuilder.parameter().value(attr.getSRS()).as_constant()
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                    )
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                );
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            } else {
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                sqlbuilder.update().column().name(attr.getName()).with_value(
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                    expbuilder.parameter(attr.getName()).as_variable()
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                );
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            }
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        }
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        if (!sqlbuilder.update().has_where() ) {
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            throw new RuntimeException("Operation requires missing pk");
299
        }
300
        sqlbuilder.setProperties(
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                Variable.class, 
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                PROP_FEATURE_TYPE, this.featureType,
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                PROP_TABLE, table
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        );
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        String sql = sqlbuilder.update().toString();
306
        return sql;
307
    }
308
    
309
    public void performUpdates(Connection conn) throws DataException {
310

    
311
        JDBCSQLBuilderBase sqlbuilder = createSQLBuilder();
312
        String sql = getUpdateSQL(sqlbuilder);
313
        
314
        PreparedStatement st = null;
315
        Disposable paramsDisposer = null;
316
        try {
317
            st = conn.prepareStatement(sql);
318
            while (updateds.hasNext()) {
319
                FeatureProvider featureProvider = (FeatureProvider) updateds.next();
320
                paramsDisposer = sqlbuilder.setParameters(st, featureProvider);
321
                if (JDBCUtils.executeUpdate(st,sql) == 0) {
322
                    throw new JDBCUpdateWithoutChangesException(sql,null);
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                }
324
            }
325
        } catch (SQLException e) {
326
            throw new JDBCSQLException(e);
327
        } finally {
328
            JDBCUtils.closeQuietly(st);
329
            DisposeUtils.disposeQuietly(paramsDisposer);
330
        }
331
    }
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    public List<String> getUpdateTableSQLs() {
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        JDBCSQLBuilderBase sqlbuilder = createSQLBuilder();
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        sqlbuilder.alter_table().table()
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                .database(this.table.getDatabase())
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                .schema(this.table.getSchema())
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                .name(this.table.getTable());
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340
        for (FeatureAttributeDescriptor attrOrgiginal : featureTypeSource) {
341
            FeatureAttributeDescriptor attrTarget = featureTypeTarget.getAttributeDescriptor(
342
                    attrOrgiginal.getName()
343
            );
344
            if (attrTarget == null) {
345
                if( attrOrgiginal.isComputed() ) {
346
                    continue;
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                }
348
                sqlbuilder.alter_table().drop_column(attrOrgiginal.getName());
349
            } else if( !this.areEquals(attrOrgiginal, attrTarget) ) {
350
                if( attrTarget.isComputed() ) {
351
                    continue;
352
                }
353
                if( attrTarget.getType()==DataTypes.GEOMETRY ) {
354
                    sqlbuilder.alter_table().alter_geometry_column(
355
                            attrTarget.getName(),
356
                            attrTarget.getGeomType().getType(),
357
                            attrTarget.getGeomType().getSubType(),
358
                            attrTarget.getSRS(),
359
                            attrTarget.isIndexed(),
360
                            attrTarget.allowNull()
361
                    );
362
                } else {
363
                    sqlbuilder.alter_table().alter_column(
364
                            attrTarget.getName(),
365
                            attrTarget.getType(),
366
                            attrTarget.getSize(),
367
                            attrTarget.getPrecision(),
368
                            attrTarget.getScale(),
369
                            attrTarget.isPrimaryKey(),
370
                            attrTarget.isIndexed(),
371
                            attrTarget.allowNull(),
372
                            attrTarget.isAutomatic(),
373
                            attrTarget.getDefaultValue()
374
                    );
375
                }
376
            }
377
        }
378
        for (FeatureAttributeDescriptor attrTarget : featureTypeTarget) {
379
            if( attrTarget.isComputed() ) {
380
                continue;
381
            }
382
            if (featureTypeSource.getAttributeDescriptor(attrTarget.getName()) == null) {
383
                if( attrTarget.getType()==DataTypes.GEOMETRY ) {
384
                    sqlbuilder.alter_table().add_geometry_column(
385
                            attrTarget.getName(),
386
                            attrTarget.getGeomType().getType(),
387
                            attrTarget.getGeomType().getSubType(),
388
                            attrTarget.getSRS(),
389
                            attrTarget.isIndexed(),
390
                            attrTarget.allowNull()
391
                    );
392
                } else {
393
                    sqlbuilder.alter_table().add_column(
394
                            attrTarget.getName(),
395
                            attrTarget.getType(),
396
                            attrTarget.getSize(),
397
                            attrTarget.getPrecision(),
398
                            attrTarget.getScale(),
399
                            attrTarget.isPrimaryKey(),
400
                            attrTarget.isIndexed(),
401
                            attrTarget.allowNull(),
402
                            attrTarget.isAutomatic(),
403
                            attrTarget.getDefaultValue()
404
                    );
405
                }
406
            }
407
        }
408
        sqlbuilder.setProperties(
409
                Variable.class, 
410
                PROP_TABLE, table
411
        );
412
        
413
        List<String> sqls = sqlbuilder.alter_table().toStrings();
414
        sqls.addAll(buildCreateIndexSQL());
415
        return sqls;
416
    }
417
    
418
    protected boolean areEquals(FeatureAttributeDescriptor attr1, FeatureAttributeDescriptor attr2) {
419
        // No interesa si son o no iguales en general, solo si son iguales en lo 
420
        // que a los atributos usados para crear la columna de la tabla se refiere.
421
        if( !StringUtils.equals(attr1.getName(), attr2.getName()) ) {
422
            return false;
423
        }
424
        if( attr1.getType() != attr2.getType() ) {
425
            return false;
426
        }
427
        if( attr1.getPrecision() != attr2.getPrecision() ) {
428
            return false;
429
        }
430
        if( attr1.getScale() != attr2.getScale() ) {
431
            return false;
432
        }
433
        if( attr1.getSize() != attr2.getSize() ) {
434
            return false;
435
        }
436
        if( attr1.isPrimaryKey() != attr2.isPrimaryKey() ) {
437
            return false;
438
        }        
439
//        if( attr1.isIndexed() != attr2.isIndexed() ) {
440
//            return false;
441
//        }
442
        if( attr1.allowNull() != attr2.allowNull() ) {
443
            return false;
444
        }
445
        if( attr1.isAutomatic() != attr2.isAutomatic() ) {
446
            return false;
447
        }
448
        if( attr1.getDefaultValue() != attr2.getDefaultValue() ) {
449
            if( attr1.getDefaultValue()==null || attr2.getDefaultValue()==null) {
450
                return false;
451
            }
452
            if( !attr1.getDefaultValue().equals(attr2.getDefaultValue()) ) {
453
                return false;
454
            }
455
        }
456
        return true;
457
    }
458

    
459
    protected List<String> buildCreateIndexSQL() {
460
        ArrayList<String> sqls = new ArrayList<>();
461
        
462
        for (FeatureAttributeDescriptor attrTarget : featureTypeTarget) {
463
            boolean createIndex = false;
464
            if( attrTarget.isIndexed() ) {
465
                FeatureAttributeDescriptor attrOriginal = featureTypeSource.getAttributeDescriptor(attrTarget.getName());
466
                if ( attrOriginal == null) {
467
                    createIndex = true;
468
                } else {
469
                    if( attrOriginal.isIndexed() ) {
470
                        createIndex = false;
471
                    } else {
472
                        createIndex = true;
473
                    }
474
                }
475
            }
476
            if( createIndex ) {
477
                JDBCSQLBuilderBase sqlbuilder = createSQLBuilder();
478
                if( attrTarget.getType()==DataTypes.GEOMETRY ) {
479
                    sqlbuilder.create_index().spatial();
480
                }
481
                sqlbuilder.create_index().if_not_exist();
482
                sqlbuilder.create_index().name("idx_" + table + "_" + attrTarget.getName());
483
                sqlbuilder.create_index().column(attrTarget.getName());
484
                sqlbuilder.create_index().table()
485
                    .database(this.table.getDatabase())
486
                    .schema(this.table.getSchema())
487
                    .name(this.table.getTable());
488
                sqlbuilder.setProperties(
489
                        Variable.class, 
490
                        PROP_TABLE, table
491
                );
492
                sqls.addAll(sqlbuilder.create_index().toStrings());
493
            }
494
        }
495
        return sqls;
496
    }
497
    
498
    public void performUpdateTable(Connection conn) throws DataException {
499
        
500
        List<String> sqls = this.getUpdateTableSQLs();
501

    
502
        if( !CollectionUtils.isEmpty(sqls) ) {
503
            Statement st = null;
504
            try {
505
                st = conn.createStatement();
506
                for (String sql : sqls) {
507
                    if( !StringUtils.isBlank(sql) ) {
508
                        JDBCUtils.execute(st, sql);
509
                    }
510
                }
511
            } catch (SQLException e) {
512
                throw new JDBCSQLException(e);
513
            } finally {
514
                JDBCUtils.closeQuietly(st);
515
            }
516
        }
517
    }
518
}