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 / FetchFeatureTypeOperation.java @ 46315
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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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|
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import java.sql.DatabaseMetaData; |
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import java.sql.ResultSet; |
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import java.sql.ResultSetMetaData; |
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import java.sql.SQLException; |
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import java.sql.Statement; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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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.cresques.cts.IProjection; |
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import org.gvsig.expressionevaluator.ExpressionBuilder; |
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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.EditableFeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.EditableFeatureType; |
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import org.gvsig.fmap.dal.store.jdbc.exception.SQLRuntimeException; |
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import org.gvsig.fmap.dal.store.jdbc2.JDBCConnection; |
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import org.gvsig.fmap.dal.store.jdbc2.spi.JDBCSQLBuilderBase; |
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import org.gvsig.fmap.dal.store.jdbc2.JDBCHelper; |
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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 org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.type.GeometryType; |
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import static org.gvsig.fmap.dal.store.jdbc2.spi.operations.AbstractConnectionOperation.LOGGER; |
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import org.gvsig.tools.dataTypes.DataType; |
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|
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@SuppressWarnings("UseSpecificCatch") |
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public class FetchFeatureTypeOperation extends AbstractConnectionOperation { |
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|
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protected static class IndexInformation { |
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String column_name;
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boolean ascending;
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boolean unique;
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} |
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protected final EditableFeatureType featureType; |
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protected final TableReference table; |
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protected final List<String> primaryKeys; |
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protected final String defaultGeometryColumn; |
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protected final IProjection crs; |
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protected final int geometryType; |
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protected final int geometrySubtype; |
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protected Map<String,IndexInformation> indexesInformation; |
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|
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public FetchFeatureTypeOperation(
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JDBCHelper helper |
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) { |
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this(helper, null, null, null, null, null, Geometry.TYPES.UNKNOWN, Geometry.SUBTYPES.UNKNOWN); |
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} |
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public FetchFeatureTypeOperation(
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JDBCHelper helper, |
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EditableFeatureType featureType, |
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String defaultGeometryColumn,
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IProjection crs |
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) { |
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this(helper, featureType, null, null, defaultGeometryColumn, crs, Geometry.TYPES.UNKNOWN, Geometry.SUBTYPES.UNKNOWN); |
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} |
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|
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public FetchFeatureTypeOperation(
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JDBCHelper helper, |
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EditableFeatureType featureType, |
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TableReference table, |
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List<String> primaryKeys, |
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String defaultGeometryColumn,
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IProjection crs, |
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int geometryType,
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int geometrySubtype
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) { |
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super(helper);
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this.featureType = featureType;
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this.table = table;
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this.primaryKeys = primaryKeys;
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this.defaultGeometryColumn = defaultGeometryColumn;
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this.crs = crs;
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this.geometryType = geometryType;
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this.geometrySubtype = geometrySubtype;
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} |
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@Override
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public final Object perform(JDBCConnection conn) throws DataException { |
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this.fetch(conn);
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return true; |
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} |
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protected TableReference getTable() {
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return this.table; |
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} |
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public void fetch(JDBCConnection conn) throws DataException { |
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List<String> pks = this.primaryKeys; |
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Statement st = null; |
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ResultSet rs = null; |
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try {
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if (CollectionUtils.isEmpty(pks)) {
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if (table.hasSubquery()) {
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LOGGER.debug("Searching pk in a table with a subquery ("+table.toString()+"."); |
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} |
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pks = this.getPrimaryKeysFromMetadata(conn, null, table.getSchema(), table.getTable()); |
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if (CollectionUtils.isEmpty(pks)) {
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pks = getPrimaryKeysFromInformationSchema(conn); |
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} |
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} |
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st = conn.createStatement(); |
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st.setFetchSize(1);
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rs = JDBCUtils.executeQuery(st, this.getSQLToRetrieveMetadataOfTable());
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ResultSetMetaData rsMetadata = rs.getMetaData();
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fetchFeatureTypeFromMetadata(conn, rsMetadata, pks); |
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} catch (SQLException ex) { |
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throw new SQLRuntimeException("Can't fecth feature type.",ex); |
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} finally {
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JDBCUtils.closeQuietly(rs); |
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JDBCUtils.closeQuietly(st); |
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} |
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} |
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public String getSQLToRetrieveMetadataOfTable() { |
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JDBCSQLBuilderBase sqlbuilder = this.createSQLBuilder();
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sqlbuilder.select().column().all(); |
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sqlbuilder.select().from().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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// sqlbuilder.select().from().subquery(this.table.getSubquery());
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sqlbuilder.select().limit(0);
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String sql = sqlbuilder.toString();
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return sql;
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} |
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public void fetchFeatureTypeFromMetadata(JDBCConnection conn, ResultSetMetaData rsMetadata) throws SQLException { |
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this.fetchFeatureTypeFromMetadata(conn, rsMetadata, new ArrayList<>()); |
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} |
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protected void fetchFeatureTypeFromMetadata(JDBCConnection conn, ResultSetMetaData rsMetadata, List<String> pks) throws SQLException { |
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int i;
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int geometriesColumns = 0; |
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String lastGeometry = null; |
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EditableFeatureAttributeDescriptor attr; |
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boolean firstGeometryAttrFound = false; |
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for (i = 1; i <= rsMetadata.getColumnCount(); i++) { |
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attr = getAttributeFromMetadata(featureType, conn, rsMetadata, i); |
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if ( isInPrimaryKeys(pks,attr) ) {
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attr.setIsPrimaryKey(true);
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} |
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if (attr.getType() == DataTypes.GEOMETRY) {
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geometriesColumns++; |
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lastGeometry = attr.getName(); |
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// Set the default geometry attribute if it is the one
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// given as parameter or it is the first one, just in case.
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if (!firstGeometryAttrFound || StringUtils.equalsIgnoreCase(lastGeometry, defaultGeometryColumn)) {
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firstGeometryAttrFound = true;
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featureType.setDefaultGeometryAttributeName(lastGeometry); |
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} |
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} |
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} |
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if (StringUtils.isBlank(defaultGeometryColumn)) {
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if (geometriesColumns == 1) { |
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featureType.setDefaultGeometryAttributeName(lastGeometry); |
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} |
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} else if (!StringUtils.equalsIgnoreCase(defaultGeometryColumn, featureType.getDefaultGeometryAttributeName())) { |
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EditableFeatureAttributeDescriptor geomattr = featureType.getEditableAttributeDescriptor(defaultGeometryColumn); |
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if (geomattr.getDataType().getType() != DataTypes.GEOMETRY) {
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geomattr.setDataType(DataTypes.GEOMETRY); |
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geomattr.setGeometryType(Geometry.TYPES.GEOMETRY, Geometry.SUBTYPES.GEOM2D); |
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} |
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} |
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if (featureType.getDefaultGeometryAttribute() != null) { |
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EditableFeatureAttributeDescriptor attrGeom = (EditableFeatureAttributeDescriptor) featureType.getDefaultGeometryAttribute(); |
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if (crs != null) { |
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attrGeom.setSRS(crs); |
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} |
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if (geometryType != Geometry.TYPES.UNKNOWN && geometrySubtype != Geometry.SUBTYPES.UNKNOWN) {
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attrGeom.setGeometryType(geometryType, geometrySubtype); |
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} else if (geometryType != Geometry.TYPES.UNKNOWN) { |
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attrGeom.setGeometryType(geometryType, attrGeom.getGeomType().getSubType()); |
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} else if (geometrySubtype != Geometry.SUBTYPES.UNKNOWN) { |
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attrGeom.setGeometryType(attrGeom.getGeomType().getType(), geometrySubtype); |
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} |
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} |
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} |
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protected boolean isInPrimaryKeys(List<String> pks, EditableFeatureAttributeDescriptor attr) { |
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if( pks == null || attr == null ) { |
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return false; |
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} |
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// En algunos gestores de BBDD, los nombres obtenidos de las pks de los
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// metadados no coinciden con los nombres de los campos ya que unos estan
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// en mayusculas y otros en minusculas, asi que en lugar de usar un "contains"
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// nos los recorremos y comparamos con IgnoreCase.
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for (String pk : pks) { |
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if( StringUtils.equalsIgnoreCase(pk, attr.getName()) ) {
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return true; |
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} |
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} |
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return false; |
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} |
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protected List<String> getPrimaryKeysFromMetadata( |
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JDBCConnection conn, |
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String catalog,
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String schema,
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String table) throws SQLException { |
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ResultSet rsPrimaryKeys = null; |
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ResultSet rs = null; |
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try {
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DatabaseMetaData metadata = conn.getMetaData();
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rs = metadata.getTables(catalog, schema, table, null);
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if (!rs.next()) {
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// No tables found with default values, ignoring catalog
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rs.close(); |
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catalog = null;
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schema = null;
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rs = metadata.getTables(catalog, schema, table, null);
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if (!rs.next()) {
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// table not found
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return null; |
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} else if (rs.next()) { |
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// More that one, cant identify
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return null; |
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} |
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} else if (rs.next()) { |
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// More that one, cant identify
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return null; |
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} |
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rsPrimaryKeys = metadata.getPrimaryKeys(catalog, schema, table); |
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List pks = new ArrayList(); |
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while (rsPrimaryKeys.next()) {
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pks.add(rsPrimaryKeys.getString("COLUMN_NAME"));
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} |
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return pks;
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} catch (SQLException e) { |
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return null; |
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|
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} finally {
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JDBCUtils.closeQuietly(rs); |
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JDBCUtils.closeQuietly(rsPrimaryKeys); |
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} |
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} |
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protected List<String> getPrimaryKeysFromInformationSchema(JDBCConnection conn) throws SQLException { |
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String sql = getSQLToRetrievePrimaryKeysFromInformationSchema();
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Statement st = null; |
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ResultSet rs = null; |
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List<String> pks = new ArrayList(); |
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try {
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st = conn.createStatement(); |
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rs = JDBCUtils.executeQuery(st, sql); |
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while (rs.next()) {
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pks.add(rs.getString(1));
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} |
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if (pks.isEmpty()) {
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return null; |
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} |
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return pks;
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} catch (Exception ex) { |
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return pks;
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|
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} finally {
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JDBCUtils.closeQuietly(rs); |
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JDBCUtils.closeQuietly(st); |
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} |
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} |
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public String getSQLToRetrievePrimaryKeysFromInformationSchema() throws SQLException { |
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JDBCSQLBuilderBase sqlbuilder = this.createSQLBuilder();
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ExpressionBuilder expbuilder = sqlbuilder.expression(); |
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sqlbuilder.select().column().name("COLUMN_NAME");
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sqlbuilder.select().column().name("CONSTRAINT_TYPE");
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sqlbuilder.select().from().custom( |
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"INFORMATION_SCHEMA.table_constraints t_cons "
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+ "inner join INFORMATION_SCHEMA.key_column_usage c on "
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+ "c.constraint_catalog = t_cons.constraint_catalog and "
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+ "c.table_schema = t_cons.table_schema and "
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+ "c.table_name = t_cons.table_name and "
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+ "c.constraint_name = t_cons.constraint_name "
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); |
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sqlbuilder.select().where().set( |
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expbuilder.like( |
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expbuilder.custom("c.TABLE_NAME"),
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expbuilder.constant(table.getTable()) |
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) |
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); |
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if( table.hasSchema() ) {
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sqlbuilder.select().where().and( |
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expbuilder.like( |
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expbuilder.custom("c.TABLE_SCHEMA"),
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expbuilder.constant(table.getSchema()) |
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) |
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); |
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} |
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// if (catalog != null) {
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// sqlbuilder.select().where().and(
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// expbuilder.like(
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// expbuilder.custom("c.CONSTRAINT_CATALOG"),
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// expbuilder.constant(catalog)
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// )
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// );
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// }
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sqlbuilder.select().where().and( |
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expbuilder.eq( |
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expbuilder.column("CONSTRAINT_TYPE"),
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expbuilder.constant("PRIMARY KEY")
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) |
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); |
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return sqlbuilder.toString();
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} |
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|
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|
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protected EditableFeatureAttributeDescriptor getAttributeFromMetadata(
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EditableFeatureType type, |
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JDBCConnection conn, |
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ResultSetMetaData rsMetadata,
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int colIndex
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) throws SQLException { |
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|
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EditableFeatureAttributeDescriptor attr = type.add( |
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rsMetadata.getColumnName(colIndex), |
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this.getDataTypeFromMetadata(rsMetadata, colIndex)
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); |
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attr.setAllowNull( |
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rsMetadata.isNullable(colIndex) == ResultSetMetaData.columnNullable
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); |
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attr.setIsAutomatic(rsMetadata.isAutoIncrement(colIndex)); |
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attr.setIsReadOnly(rsMetadata.isReadOnly(colIndex)); |
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switch(attr.getType()) {
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case DataTypes.STRING:
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attr.setSize(rsMetadata.getPrecision(colIndex)); |
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attr.setPrecision(DataType.PRECISION_NONE); |
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attr.setScale(DataType.SCALE_NONE); |
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break;
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case DataTypes.BYTE:
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attr.setDisplaySize(rsMetadata.getColumnDisplaySize(colIndex)); |
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attr.setPrecision(DataType.BYTE_DEFAULT_PRECISION); |
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attr.setScale(DataType.SCALE_NONE); |
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break;
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case DataTypes.INT:
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attr.setDisplaySize(rsMetadata.getColumnDisplaySize(colIndex)); |
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attr.setPrecision(DataType.INT_DEFAULT_PRECISION); |
385 |
attr.setScale(DataType.SCALE_NONE); |
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break;
|
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case DataTypes.LONG:
|
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attr.setDisplaySize(rsMetadata.getColumnDisplaySize(colIndex)); |
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attr.setPrecision(DataType.LONG_DEFAULT_PRECISION); |
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attr.setScale(DataType.SCALE_NONE); |
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break;
|
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case DataTypes.FLOAT:
|
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attr.setDisplaySize(rsMetadata.getColumnDisplaySize(colIndex)); |
394 |
attr.setPrecision(DataType.FLOAT_DEFAULT_PRECISION); |
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attr.setScale(DataType.SCALE_NONE); |
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break;
|
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case DataTypes.DOUBLE:
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attr.setDisplaySize(rsMetadata.getColumnDisplaySize(colIndex)); |
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attr.setPrecision(DataType.DOUBLE_DEFAULT_PRECISION); |
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attr.setScale(DataType.SCALE_NONE); |
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break;
|
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case DataTypes.DECIMAL:
|
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attr.setDisplaySize(rsMetadata.getColumnDisplaySize(colIndex)); |
404 |
attr.setScale(rsMetadata.getScale(colIndex)); |
405 |
attr.setPrecision(rsMetadata.getPrecision(colIndex)); |
406 |
break;
|
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case DataTypes.OBJECT:
|
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attr.setAdditionalInfo( |
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"SQLType",
|
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String.valueOf(rsMetadata.getColumnType(colIndex))
|
411 |
); |
412 |
attr.setAdditionalInfo( |
413 |
"SQLTypeName",
|
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rsMetadata.getColumnTypeName(colIndex) |
415 |
); |
416 |
break;
|
417 |
case DataTypes.GEOMETRY:
|
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this.fetchGeometryTypeAndSRS(attr, rsMetadata, colIndex);
|
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break;
|
420 |
} |
421 |
IndexInformation indexInformation = this.getIndexesInformation(conn).get(attr.getName());
|
422 |
if( indexInformation!=null ) { |
423 |
attr.setIsIndexed(true);
|
424 |
attr.setIsIndexAscending(indexInformation.ascending); |
425 |
// attr.setIsIndexUnique(indexInformation.unique);
|
426 |
} |
427 |
return attr;
|
428 |
} |
429 |
|
430 |
protected Map<String,IndexInformation> getIndexesInformation( |
431 |
JDBCConnection conn |
432 |
) throws SQLException { |
433 |
if( this.indexesInformation==null ) { |
434 |
this.indexesInformation = new HashMap<>(); |
435 |
DatabaseMetaData metaData = conn.getMetaData();
|
436 |
if( metaData!=null ) { |
437 |
ResultSet rsIndexes = metaData.getIndexInfo(null, this.table.getSchema(), this.table.getTable(), false, false); |
438 |
if( rsIndexes!=null ) { |
439 |
while( rsIndexes.next() ) {
|
440 |
IndexInformation x = new IndexInformation();
|
441 |
x.column_name = rsIndexes.getString("COLUMN_NAME");
|
442 |
String asc_or_desc = rsIndexes.getString("ASC_OR_DESC"); |
443 |
// ASC_OR_DESC String => column sort sequence,
|
444 |
// "A" => ascending,
|
445 |
// "D" => descending,
|
446 |
// may be null if sort sequence is not supported;
|
447 |
// null when TYPE is tableIndexStatistic
|
448 |
if( StringUtils.isNotBlank(asc_or_desc) ) {
|
449 |
if( asc_or_desc.equalsIgnoreCase("A") ) { |
450 |
x.ascending = true;
|
451 |
} else {
|
452 |
x.ascending = false;
|
453 |
} |
454 |
} |
455 |
x.unique = !rsIndexes.getBoolean("NON_UNIQUE");
|
456 |
// NON_UNIQUE boolean => Can index values be non-unique.
|
457 |
// false when TYPE is tableIndexStatistic
|
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this.indexesInformation.put(x.column_name, x);
|
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} |
460 |
} |
461 |
} |
462 |
} |
463 |
return this.indexesInformation; |
464 |
} |
465 |
|
466 |
protected int getDataTypeFromMetadata( |
467 |
ResultSetMetaData rsMetadata,
|
468 |
int colIndex
|
469 |
) throws SQLException { |
470 |
|
471 |
switch (rsMetadata.getColumnType(colIndex)) {
|
472 |
case java.sql.Types.TINYINT:
|
473 |
return DataTypes.BYTE;
|
474 |
|
475 |
case java.sql.Types.SMALLINT:
|
476 |
case java.sql.Types.INTEGER:
|
477 |
return DataTypes.INT;
|
478 |
|
479 |
case java.sql.Types.BIGINT:
|
480 |
return DataTypes.LONG;
|
481 |
|
482 |
case java.sql.Types.REAL:
|
483 |
case java.sql.Types.FLOAT:
|
484 |
return DataTypes.FLOAT;
|
485 |
|
486 |
case java.sql.Types.DOUBLE:
|
487 |
return DataTypes.DOUBLE;
|
488 |
|
489 |
case java.sql.Types.NUMERIC:
|
490 |
case java.sql.Types.DECIMAL:
|
491 |
return DataTypes.DECIMAL;
|
492 |
|
493 |
case java.sql.Types.CHAR:
|
494 |
case java.sql.Types.VARCHAR:
|
495 |
case java.sql.Types.LONGVARCHAR:
|
496 |
case java.sql.Types.CLOB:
|
497 |
return DataTypes.STRING;
|
498 |
|
499 |
case java.sql.Types.DATE:
|
500 |
return DataTypes.DATE;
|
501 |
|
502 |
case java.sql.Types.TIME:
|
503 |
return DataTypes.TIME;
|
504 |
|
505 |
case java.sql.Types.TIMESTAMP:
|
506 |
return DataTypes.TIMESTAMP;
|
507 |
|
508 |
case java.sql.Types.BOOLEAN:
|
509 |
case java.sql.Types.BIT:
|
510 |
return DataTypes.BOOLEAN;
|
511 |
|
512 |
case java.sql.Types.BLOB:
|
513 |
case java.sql.Types.BINARY:
|
514 |
case java.sql.Types.LONGVARBINARY:
|
515 |
return DataTypes.BYTEARRAY;
|
516 |
|
517 |
default:
|
518 |
String typeName = rsMetadata.getColumnTypeName(colIndex);
|
519 |
if( "geometry".equalsIgnoreCase(typeName) ) { |
520 |
return DataTypes.GEOMETRY;
|
521 |
} |
522 |
return DataTypes.OBJECT;
|
523 |
} |
524 |
} |
525 |
|
526 |
/**
|
527 |
* Inicializa el tipo, subtipo y SRS del attributo de tipo geometria.
|
528 |
*
|
529 |
* @param attr
|
530 |
* @param rsMetadata
|
531 |
* @param colIndex
|
532 |
*/
|
533 |
protected void fetchGeometryTypeAndSRS( |
534 |
EditableFeatureAttributeDescriptor attr, |
535 |
ResultSetMetaData rsMetadata,
|
536 |
int colIndex
|
537 |
) { |
538 |
if( attr.getType()!=DataTypes.GEOMETRY ) {
|
539 |
return;
|
540 |
} |
541 |
try {
|
542 |
GeometryType geomType = GeometryLocator.getGeometryManager().getGeometryType( |
543 |
Geometry.TYPES.GEOMETRY, |
544 |
Geometry.SUBTYPES.GEOM2D |
545 |
); |
546 |
attr.setGeometryType(geomType); |
547 |
attr.setSRS((IProjection)null);
|
548 |
} catch (Exception ex) { |
549 |
LOGGER.warn("Can't get default geometry type.",ex);
|
550 |
} |
551 |
} |
552 |
|
553 |
} |