svn-gvsig-desktop / branches / v2_0_0_prep / extensions / org.gvsig.oracle / src / org / gvsig / fmap / dal / store / oracle / OracleSetProvider.java @ 37896
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 Prodevelop S.L. main development
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*/
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/**
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*
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*/
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package org.gvsig.fmap.dal.store.oracle; |
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import java.sql.Connection; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCIterator; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCSetProvider; |
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import org.gvsig.fmap.dal.store.jdbc.JDBCStoreProvider; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.GeometryException; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.GeometryManager; |
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import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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import org.gvsig.fmap.geom.aggregate.impl.MultiSurface2D; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.fmap.geom.primitive.NullGeometry; |
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import org.gvsig.fmap.geom.primitive.impl.Circle2D; |
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import org.gvsig.fmap.mapcontext.layers.vectorial.IntersectsEnvelopeEvaluator; |
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import org.gvsig.fmap.mapcontext.layers.vectorial.IntersectsGeometryEvaluator; |
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import org.gvsig.tools.evaluator.Evaluator; |
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import org.gvsig.tools.evaluator.EvaluatorFieldValueMatch; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/**
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* @author jmvivo
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*
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*/
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public class OracleSetProvider extends JDBCSetProvider { |
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private static Logger logger = LoggerFactory.getLogger(OracleSetProvider.class); |
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public OracleSetProvider(JDBCStoreProvider store, FeatureQuery query,
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FeatureType featureType) throws DataException {
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super(store, query, featureType);
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.dal.feature.spi.FeatureSetProvider#canFilter()
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*/
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public boolean canFilter() { |
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// TODO more checks
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// return true;
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return true; |
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} |
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protected JDBCIterator createFastIterator(long index) throws DataException { |
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return super.createFastIterator(index); |
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} |
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protected JDBCIterator createDefaultFastIterator(int resultSetID) |
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throws DataException {
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// super(store, set, featureType, resultsetID);
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// this.featureProvider = super.createFeatureProvider();
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return new OracleJdbcFastIterator((JDBCStoreProvider) getStore(), this, |
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getFeatureType(), resultSetID); |
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} |
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protected String getSqlForEvaluator(Evaluator filter) { |
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String gfld = getFeatureType().getDefaultGeometryAttributeName();
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Object envGeoOrNull = null; |
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boolean isFilterApplicable = false; |
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try {
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if (filter == null |
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|| filter instanceof IntersectsGeometryEvaluator
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|| filter instanceof IntersectsEnvelopeEvaluator) {
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isFilterApplicable = true;
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envGeoOrNull = getGeomFilterObject(filter, (OracleStoreParameters) getStore().getParameters(), gfld); |
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} else {
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//If the filter is not null, the filterarea parameter has to be also applied
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envGeoOrNull = getStore().getParameters().getDynValue(OracleStoreParameters.ORA_AREA_OF_INT_KEY); |
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} |
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} catch (Exception ex) { |
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logger.error("While getting filter object: " + ex.getMessage());
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} |
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Envelope env = null;
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Geometry geom = null;
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String filterString = null; |
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String srs = ""; |
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boolean is_geo = false; |
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if (envGeoOrNull != null) { |
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if (envGeoOrNull instanceof Envelope) { |
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srs = (String) getStore().getDynValue(OracleStoreParameters.ORA_TABLE_SRID_KEY);
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is_geo = OracleUtils.getIsGCS(srs, srs != null && srs.length() > 0); |
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env = (Envelope) envGeoOrNull; |
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filterString = OracleUtils.getIntersectsEnvelopeSelect( |
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getFeatureType().getDefaultGeometryAttributeName(), |
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env, srs, is_geo); |
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} else {
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if (envGeoOrNull instanceof Geometry) { |
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geom = (Geometry) envGeoOrNull; |
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if (geom instanceof NullGeometry) { |
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// no intersection
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filterString = "(ROWID is null)";
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} else {
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if (envGeoOrNull instanceof Circle2D) { |
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env = geom.getEnvelope(); |
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srs = (String) getStore().getDynValue(OracleStoreParameters.ORA_TABLE_SRID_KEY);
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is_geo = OracleUtils.getIsGCS(srs, srs != null && srs.length() > 0); |
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filterString = OracleUtils.getIntersectsEnvelopeSelect( |
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getFeatureType().getDefaultGeometryAttributeName(), |
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env, srs, is_geo); |
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} else {
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// need conn
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Connection conn = null; |
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try {
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conn = ((OracleStoreProvider) getStore()).getOraHelper().getConnection(); |
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} catch (Exception ex) { |
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logger.error("While getting connection: " + ex.getMessage());
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return null; |
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} |
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srs = (String) getStore().getDynValue(OracleStoreParameters.ORA_TABLE_SRID_KEY);
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is_geo = OracleUtils.getIsGCS(srs, srs != null && srs.length() > 0); |
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filterString = OracleUtils.getIntersectsMultiRectSelect( |
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getFeatureType().getDefaultGeometryAttributeName(), |
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geom, srs, is_geo, conn); |
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} |
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} |
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} else {
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// unknwon
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logger.warn("Found unexpected object: " + envGeoOrNull.getClass().getName());
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filterString = "(ROWID is null)";
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} |
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} |
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} |
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//If the filter has not been completely applied
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if (!isFilterApplicable) {
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if (filterString == null) { |
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filterString = super.getSqlForEvaluator(filter);
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}else{
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filterString = filterString + " AND " + super.getSqlForEvaluator(filter); |
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} |
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} |
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return filterString;
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} |
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/**
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* @param filter
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* @param parameters
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* @return
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*/
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private Object getGeomFilterObject( |
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Evaluator filter, |
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OracleStoreParameters ora_pars, |
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String gfname) throws Exception { |
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Geometry filter_geom = null;
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Envelope filter_env = null;
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Envelope working_env = ora_pars.getWorkingArea(); |
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Geometry aoi_geom = (Geometry) ora_pars.getDynValue(OracleStoreParameters.ORA_AREA_OF_INT_KEY); |
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// ==============================================================
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GeometryManager gm = GeometryLocator.getGeometryManager(); |
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// ==============================================================
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if (filter instanceof IntersectsGeometryEvaluator) { |
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IntersectsGeometryEvaluator geo_filt = (IntersectsGeometryEvaluator) filter; |
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EvaluatorFieldValueMatch em = |
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(EvaluatorFieldValueMatch) geo_filt.getFieldsInfo().getFieldValues(gfname)[0];
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filter_geom = (Geometry) em.getValue(); |
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if (filter_geom.getEnvelope().getLength(0) == 0 |
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|| filter_geom.getEnvelope().getLength(1) == 0) { |
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return gm.createNullGeometry(SUBTYPES.GEOM2D);
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} |
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} else {
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if (filter instanceof IntersectsEnvelopeEvaluator) { |
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IntersectsEnvelopeEvaluator geo_filt = (IntersectsEnvelopeEvaluator) filter; |
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EvaluatorFieldValueMatch em = |
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(EvaluatorFieldValueMatch) geo_filt.getFieldsInfo().getFieldValues(gfname)[0];
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filter_env = (Envelope) em.getValue(); |
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if (filter_env.getLength(0) == 0 |
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|| filter_env.getLength(1) == 0) { |
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return gm.createNullGeometry(SUBTYPES.GEOM2D);
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} |
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} |
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} |
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// ==============================================================
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// envelope area == 0
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// ==============================================================
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if (filter_geom == null && filter_env == null) { |
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if (working_env == null && aoi_geom == null) { |
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return null; |
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} else {
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if (working_env != null) { |
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if (aoi_geom == null) { |
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return working_env;
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} else {
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return intersectEnvMultiRect(working_env, aoi_geom, gm);
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} |
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} else {
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return aoi_geom;
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} |
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} |
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} else {
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if (filter_geom != null) { |
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if (working_env == null && aoi_geom == null) { |
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return filter_geom;
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} else {
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if (working_env != null) { |
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if (aoi_geom == null) { |
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return interSecEnv(filter_geom.getEnvelope(), working_env, gm);
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} else {
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Object aux = interSecEnv(filter_geom.getEnvelope(), working_env, gm);
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if (aux instanceof Envelope) { |
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Envelope aux_env = (Envelope) aux; |
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return intersectEnvMultiRect(aux_env, aoi_geom, gm);
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} else {
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// null geometry
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return aux;
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} |
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} |
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} else {
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return intersectEnvMultiRect(filter_geom.getEnvelope(), aoi_geom, gm);
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} |
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} |
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} else {
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// filter_env
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if (working_env == null && aoi_geom == null) { |
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return filter_env;
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} else {
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if (working_env != null) { |
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if (aoi_geom == null) { |
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return interSecEnv(filter_env, working_env, gm);
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} else {
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Object aux = interSecEnv(filter_env, working_env, gm);
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if (aux instanceof Envelope) { |
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Envelope aux_env = (Envelope) aux; |
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return intersectEnvMultiRect(aux_env, aoi_geom, gm);
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} else {
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// null geometry
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return aux;
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} |
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} |
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} else {
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return intersectEnvMultiRect(filter_env, aoi_geom, gm);
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} |
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} |
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} |
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} |
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// =============================================================
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} |
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/**
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* @param working_env
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* @param aoi_geom
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* @return
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*/
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private Object intersectEnvMultiRect(Envelope env, Geometry aoi, GeometryManager gma) throws Exception { |
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if (env == null || aoi == null || aoi instanceof NullGeometry) { |
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return gma.createNullGeometry(SUBTYPES.GEOM2D);
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} else {
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return OracleUtils.roughIntersection(aoi, env);
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} |
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} |
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/**
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* @param filter_env
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* @param working_env
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* @return
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*/
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private Object interSecEnv(Envelope enva, Envelope envb, GeometryManager gma) throws Exception { |
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if (enva == null || envb == null) { |
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return gma.createNullGeometry(SUBTYPES.GEOM2D);
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} |
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if (enva.intersects(envb)) {
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// intersect envs
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return enva.getGeometry().intersection(envb.getGeometry()).getEnvelope();
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} else {
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return gma.createNullGeometry(SUBTYPES.GEOM2D);
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} |
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} |
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} |