svn-gvsig-desktop / trunk / libraries / libDataSourceDBBaseDrivers / src / org / gvsig / data / datastores / vectorial / db / jdbc / h2 / H2FeaturesWriter.java @ 20376
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package org.gvsig.data.datastores.vectorial.db.jdbc.h2; |
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import java.sql.Connection; |
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import java.sql.DatabaseMetaData; |
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import java.sql.PreparedStatement; |
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import java.sql.ResultSet; |
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import java.sql.SQLException; |
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import java.sql.Statement; |
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import java.util.Iterator; |
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import org.gvsig.data.IDataExplorer; |
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import org.gvsig.data.IDataStoreParameters; |
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import org.gvsig.data.datastores.vectorial.ISelectiveWriter; |
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import org.gvsig.data.datastores.vectorial.db.DBFeatureType; |
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import org.gvsig.data.datastores.vectorial.db.jdbc.JDBCAttributeDescriptor; |
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import org.gvsig.data.datastores.vectorial.db.jdbc.JDBCFeature; |
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import org.gvsig.data.datastores.vectorial.db.jdbc.JDBCFeaturesWriter; |
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import org.gvsig.data.datastores.vectorial.db.jdbc.JDBCTypes; |
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import org.gvsig.data.exception.InitializeException; |
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import org.gvsig.data.exception.InitializeWriterException; |
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import org.gvsig.data.exception.ReadException; |
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import org.gvsig.data.exception.WriteException; |
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import org.gvsig.data.vectorial.IFeature; |
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import org.gvsig.data.vectorial.IFeatureAttributeDescriptor; |
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import org.gvsig.data.vectorial.IFeatureStore; |
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import org.gvsig.data.vectorial.IFeatureType; |
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import org.gvsig.data.vectorial.INewFeatureStoreParameters; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.vividsolutions.jts.io.WKBWriter; |
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class H2FeaturesWriter extends JDBCFeaturesWriter implements ISelectiveWriter { |
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DBFeatureType featureType; |
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boolean bCreateTable=false; |
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private String toEncode; |
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H2StoreParameters parameters; |
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private PreparedStatement insertSt; |
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private PreparedStatement updateSt; |
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private static WKBWriter wkbWriter = new WKBWriter(); |
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H2FeaturesWriter(){
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} |
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public void init(IFeatureStore store) { |
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super.init(store);
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H2Store h2Store = (H2Store)store; |
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this.parameters=h2Store.getParametersH2();
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this.featureType = (DBFeatureType)this.store.getDefaultFeatureType(); |
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} |
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public void preProcess() throws WriteException, ReadException { |
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super.preProcess();
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if (bCreateTable) {
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H2Explorer explorer = (H2Explorer)this.store.getExplorer();
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IDataStoreParameters params =this.store.getParameters();
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explorer.remove(params,conex); |
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INewFeatureStoreParameters newParam = (INewFeatureStoreParameters)explorer.createNewDataStoreParameter(); |
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newParam.setFeatureType(this.featureType);
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explorer.add(newParam,conex); |
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} |
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} |
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public void deleteFeature(IFeature feature) throws WriteException { |
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Statement st;
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String sqlDelete = getSqlDeleteFeature(featureType, (JDBCFeature)feature);
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System.out.println("sql = " + sqlDelete); |
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try {
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st = this.conex.createStatement();
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st.execute(sqlDelete); |
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} catch (SQLException e) { |
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throw new WriteException(this.store.getName(),e); |
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} |
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} |
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public void insertFeature(IFeature feature) throws WriteException { |
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DBFeatureType ftype = (DBFeatureType)feature.getType(); |
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try {
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PreparedStatement ps=this.getInsertFeatureStatement(ftype); |
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Iterator it = ftype.iterator();
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int index= 1; |
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while (it.hasNext()){
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JDBCAttributeDescriptor fad=(JDBCAttributeDescriptor)it.next(); |
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if (fad.isReadOnly())
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continue;
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loadValueInPreparedStatement(ps, index, fad, feature); |
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index++; |
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} |
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// ps.setObject(index, feature.get(ftype.getFieldIdIndex()));
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ps.execute(); |
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} catch (SQLException e) { |
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throw new WriteException(this.store.getName(),e); |
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} |
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} |
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private PreparedStatement getInsertFeatureStatement(DBFeatureType ftype) throws SQLException { |
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if (this.insertSt == null){ |
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StringBuffer fields = new StringBuffer(); |
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StringBuffer values = new StringBuffer(); |
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StringBuffer sql = new StringBuffer(); |
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Iterator iter = ftype.iterator();
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JDBCAttributeDescriptor fad; |
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while (iter.hasNext()){
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fad=(JDBCAttributeDescriptor)iter.next(); |
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String name = fad.getName();
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if (fad.isReadOnly())
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continue;
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fields.append(name+",");
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values.append("?,");
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} |
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sql.append("INSERT INTO "+ftype.getTableID()+" ("); |
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sql.append(fields.substring(0, fields.length()-1)); |
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sql.append(") VALUES (");
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sql.append(values.substring(0, values.length()-1)); |
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sql.append(")");
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this.insertSt= this.conex.prepareStatement(sql.toString()); |
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System.out.println(sql.toString());
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} else{
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this.insertSt.clearParameters();
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} |
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return this.insertSt; |
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} |
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public void updateFeatureType(IFeatureType featureType) { |
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this.featureType=(DBFeatureType)featureType;
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} |
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/**
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* @param createTable
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* The bCreateTable to set.
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*/
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public void setCreateTable(boolean createTable) { |
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bCreateTable = createTable; |
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} |
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boolean dropTableIfExist() throws SQLException{ |
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if (!this.existTable(parameters.getSchema(), parameters.getTableName())){ |
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return false; |
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} |
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Statement st = conex.createStatement();
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st.execute("DROP TABLE " + parameters.tableID() + ";"); |
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st.close(); |
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return false; |
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} |
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private boolean existTable(String schema, String tableName) throws SQLException{ |
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boolean exists =false; |
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DatabaseMetaData metadata = conex.getMetaData();
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ResultSet rs = metadata.getTables(null, schema, tableName, null); |
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exists = !rs.isAfterLast(); |
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rs.close(); |
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return exists;
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} |
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public void updateFeature(IFeature oldFeature, IFeature feature) throws WriteException, ReadException { |
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DBFeatureType ftype = (DBFeatureType)feature.getType(); |
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try {
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PreparedStatement ps=this.getUpdateFeatureStatement(ftype); |
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Iterator it = ftype.iterator();
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int index= 1; |
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while (it.hasNext()){
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JDBCAttributeDescriptor fad=(JDBCAttributeDescriptor)it.next(); |
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if (fad.isPrimaryKey())
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continue;
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loadValueInPreparedStatement(ps, index, fad, feature); |
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index++; |
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} |
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loadPkInPreparedStatement(ps, index, ftype, feature); |
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ps.execute(); |
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} catch (SQLException e) { |
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throw new WriteException(this.store.getName(),e); |
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} |
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} |
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public void deleteAttribute(IFeatureAttributeDescriptor attribute) throws WriteException { |
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try {
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Statement st = conex.createStatement();
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String sql = "ALTER TABLE " + parameters.tableID() + " DROP COLUMN " |
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+ attribute.getName() + ";";
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st.execute(sql); |
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} catch (SQLException e) { |
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throw new WriteException(this.store.getName(),e); |
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} |
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} |
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public void updateAttribute(IFeatureAttributeDescriptor oldAttribute, IFeatureAttributeDescriptor attribute) throws WriteException, ReadException { |
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try {
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Statement st = conex.createStatement();
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String sql = "ALTER TABLE " + parameters.tableID() + " RENAME COLUMN " |
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+ oldAttribute.getName() + " TO " + attribute.getName() + ";"; |
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st.execute(sql); |
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} catch (SQLException e) { |
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throw new WriteException(this.store.getName(),e); |
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} |
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} |
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public void insertAttribute(IFeatureAttributeDescriptor attribute) throws WriteException { |
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try {
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Statement st = conex.createStatement();
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String sql = "ALTER TABLE " |
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+ parameters.tableID() |
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+ " ADD COLUMN "
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+ attribute.getName() |
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+ " "
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+ JDBCTypes.fieldTypeToString(attribute.getDataType()) |
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+ " "
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+ "DEFAULT " + attribute.getDefaultValue()
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+ ";";
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st.execute(sql); |
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} catch (SQLException e) { |
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throw new WriteException(this.store.getName(),e); |
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} |
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} |
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public boolean canWriteGeometry(int gvSIGgeometryType) { |
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switch (gvSIGgeometryType) {
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case FShape.POINT:
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return true; |
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case FShape.LINE:
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return true; |
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case FShape.POLYGON:
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return true; |
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case FShape.ARC:
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return false; |
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case FShape.ELLIPSE:
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return false; |
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case FShape.MULTIPOINT:
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return true; |
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case FShape.TEXT:
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return false; |
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} |
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return false; |
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} |
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private PreparedStatement getUpdateFeatureStatement(DBFeatureType dbFeatureType) throws SQLException{ |
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if (this.updateSt == null){ |
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StringBuffer sqlBuf = new StringBuffer("UPDATE " |
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+ this.parameters.tableID() + " SET"); |
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String sql = null; |
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Iterator iter = dbFeatureType.iterator();
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while (iter.hasNext()){
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IFeatureAttributeDescriptor fad=(IFeatureAttributeDescriptor)iter.next(); |
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String name = fad.getName();
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// El campo gid no lo actualizamos.
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if (fad.isPrimaryKey())
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continue;
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sqlBuf.append(" " + name + " = ? ,"); |
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} |
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sqlBuf.deleteCharAt(sqlBuf.lastIndexOf(","));
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sqlBuf.append(" WHERE ");
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sqlBuf.append(getFliterForIDForPStatement(dbFeatureType)); |
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sql = sqlBuf.toString(); |
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this.updateSt= this.conex.prepareStatement(sql); |
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} else{
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this.updateSt.clearParameters();
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} |
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return this.updateSt; |
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} |
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public String getSqlDeleteFeature(DBFeatureType dbFeatureType, JDBCFeature feature) { |
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StringBuffer sqlBuf = new StringBuffer("DELETE FROM " |
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+ this.parameters.tableID() + " WHERE "); |
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String sql = null; |
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sqlBuf.append(((JDBCFeature)feature).getFilterForID()); |
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sql = sqlBuf.toString(); |
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return sql;
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} |
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public static void create(H2StoreParameters parameters, IFeatureType featureType)throws InitializeWriterException, InitializeException { |
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Connection con = H2Utils.getConnection(parameters.getUrl(), parameters.getUser(), parameters.getPassw());
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StringBuffer sb=new StringBuffer(); |
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sb.append("CREATE TABLE ");
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sb.append(parameters.tableID()); |
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sb.append(" (");
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sb.append("id int, ");
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for (int i=0 ; i<featureType.size() ; i++){ |
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IFeatureAttributeDescriptor descriptor=(IFeatureAttributeDescriptor)featureType.get(i); |
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String type = descriptor.getDataType();
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if (type.equals(IFeatureAttributeDescriptor.TYPE_BOOLEAN)){
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sb.append(descriptor.getName()); |
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sb.append(" bit, ");
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}else if (type.equals(IFeatureAttributeDescriptor.TYPE_BYTE)){ |
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sb.append(descriptor.getName()); |
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sb.append(" byte, ");
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}else if (type.equals(IFeatureAttributeDescriptor.TYPE_DATE)){ |
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sb.append(descriptor.getName()); |
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sb.append(" date, ");
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}else if (type.equals(IFeatureAttributeDescriptor.TYPE_DOUBLE)){ |
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sb.append(descriptor.getName()); |
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sb.append(" double, ");
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}else if (type.equals(IFeatureAttributeDescriptor.TYPE_FLOAT)){ |
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sb.append(descriptor.getName()); |
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sb.append(" float, ");
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}else if (type.equals(IFeatureAttributeDescriptor.TYPE_INT)){ |
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sb.append(descriptor.getName()); |
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sb.append(" int, ");
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}else if (type.equals(IFeatureAttributeDescriptor.TYPE_LONG)){ |
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sb.append(descriptor.getName()); |
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sb.append(" bigint, ");
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}else if (type.equals(IFeatureAttributeDescriptor.TYPE_STRING)){ |
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sb.append(descriptor.getName()); |
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sb.append(" varchar, ");
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}else if (type.equals(IFeatureAttributeDescriptor.TYPE_GEOMETRY)){ |
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sb.append(descriptor.getName()); |
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sb.append(" other, ");
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}else {
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System.out.print(" ---- " + "TYPE UNKNOWN"); |
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} |
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} |
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String createTable=sb.toString();
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createTable=createTable.substring(0, createTable.length()-2); |
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createTable+=")";
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try{
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Statement st=con.createStatement();
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st.execute(createTable); |
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st.close(); |
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} |
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catch(SQLException except){ |
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throw new InitializeWriterException(parameters.getDataStoreName(),except); |
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} |
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} |
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protected void loadPkInPreparedStatement(PreparedStatement ps,int paramIndex,DBFeatureType fType,IFeature feature) throws java.sql.SQLException{ |
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if (fType.getFieldsId().length != 1) |
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throw new UnsupportedOperationException("ID fields > 1"); |
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String id =fType.getFieldsId()[0]; |
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loadValueInPreparedStatement(ps, paramIndex, (JDBCAttributeDescriptor)fType.get(fType.getFieldIndex(id)), feature); |
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} |
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protected void loadValueInPreparedStatement(PreparedStatement ps,int paramIndex,JDBCAttributeDescriptor attr,IFeature feature) throws java.sql.SQLException{ |
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Object value = feature.get(attr.ordinal());
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if (value == null){ |
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ps.setNull(paramIndex, attr.getSqlType()); |
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return;
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} |
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if (attr.getDataType() == IFeatureAttributeDescriptor.TYPE_GEOMETRY){
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IGeometry geom =(IGeometry)feature.get(attr.ordinal()); |
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ps.setBytes( |
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paramIndex, wkbWriter.write(geom.toJTSGeometry()) |
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); |
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return;
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} |
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ps.setObject(paramIndex, feature.get(attr.ordinal())); |
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} |
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protected static String getFliterForIDForPStatement(DBFeatureType fType) { |
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if (fType.getFieldsId().length != 1) |
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throw new UnsupportedOperationException("ID fields > 1"); |
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String id =fType.getFieldsId()[0]; |
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return id + " = ?"; |
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} |
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} |