root / branches / v2_0_0_prep / libraries / libFMap_dal / src / org / gvsig / fmap / dal / feature / impl / SpatialManager.java @ 34978
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.fmap.dal.feature.impl; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureIndex; |
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import org.gvsig.fmap.dal.feature.FeatureIndexes; |
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import org.gvsig.fmap.dal.feature.FeatureReference; |
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import org.gvsig.fmap.dal.feature.FeatureSet; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.tools.dispose.DisposableIterator; |
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/**
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* DOCUMENT ME!
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*
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* @author Vicente Caballero Navarro
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*/
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public class SpatialManager { |
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private static final Logger LOG = LoggerFactory.getLogger(SpatialManager.class); |
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protected boolean isFullExtentDirty = true; |
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private FeatureStore featureStore;
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private FeatureIndex featureIndex = null; |
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private Envelope originalEnvelope = null; |
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private Envelope fullEnvelope = null; |
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private ArrayList feaOperation=new ArrayList(); |
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private boolean noSpatialData = false; |
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public SpatialManager(FeatureStore featureStore, Envelope originalEnvelope)
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throws DataException {
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this.featureStore=featureStore;
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FeatureIndexes findexes=featureStore.getIndexes(); |
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// Comprobamos si hay algun campo espacial a manejar
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FeatureType fType = this.featureStore.getDefaultFeatureType();
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// TODO Multy FType !!
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if (fType.getDefaultGeometryAttributeIndex() < 0) { |
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noSpatialData = true;
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return;
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} |
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FeatureAttributeDescriptor attr = fType.getAttributeDescriptor(fType |
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.getDefaultGeometryAttributeIndex()); |
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this.originalEnvelope = originalEnvelope;
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if (originalEnvelope != null) { |
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this.fullEnvelope = originalEnvelope.getGeometry().getEnvelope();
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} else {
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FeatureAttributeDescriptor geoAttr = fType.getAttributeDescriptor(fType.getDefaultGeometryAttributeIndex()); |
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try {
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this.fullEnvelope = GeometryLocator.getGeometryManager()
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.createEnvelope(geoAttr.getGeometrySubType()); |
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} catch (Exception e) { |
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// FIXME Excpetion
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throw new RuntimeException(e); |
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} |
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} |
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if (!fType.hasOID()) {
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return;
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} |
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Iterator iterator = findexes.iterator();
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FeatureIndex index; |
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while (iterator.hasNext()) {
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index = (FeatureIndex) iterator.next(); |
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if (index.getAttributeNames().size() == 1 |
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&& index.getAttributeNames().contains(attr.getName())) {
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featureIndex = index; |
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break;
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} |
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} |
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if (featureIndex == null) { |
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try{
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featureIndex = featureStore.createIndex(fType, attr.getName(), |
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"QuadtreeJts");
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}catch (Exception e) { |
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LOG.info("It can not create an index", e);
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} |
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} |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param feature DOCUMENT ME!
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* @param oldFeature DOCUMENT ME!
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*/
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public void updateFeature(Feature feature, Feature oldFeature) { |
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if (noSpatialData) {
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return;
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} |
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if (featureIndex != null) { |
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featureIndex.delete(oldFeature); |
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feaOperation.add(new FeatureOperation(((DefaultFeature) oldFeature)
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.getReference(), FeatureOperation.DELETE)); |
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featureIndex.insert(feature); |
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feaOperation.add(new FeatureOperation(((DefaultFeature) feature)
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.getReference(), FeatureOperation.INSERT)); |
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// } else {
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// fullEnvelope.add(feature.getDefaultEnvelope());
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} |
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isFullExtentDirty = true;
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} |
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/**
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* DOCUMENT ME!
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*
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* @param feature DOCUMENT ME!
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*/
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public void insertFeature(Feature feature) { |
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if (noSpatialData) {
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return;
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} |
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if (featureIndex != null) { |
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featureIndex.insert(feature); |
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feaOperation.add(new FeatureOperation(((DefaultFeature) feature)
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.getReference(), FeatureOperation.INSERT)); |
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} else if (!isFullExtentDirty) { |
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fullEnvelope.add(feature.getDefaultEnvelope()); |
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} |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param feature DOCUMENT ME!
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*/
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public void deleteFeature(Feature feature) { |
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if (noSpatialData) {
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return;
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} |
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if (featureIndex != null) { |
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featureIndex.delete(feature); |
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feaOperation.add(new FeatureOperation(((DefaultFeature) feature)
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.getReference(), FeatureOperation.DELETE)); |
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} |
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isFullExtentDirty = true;
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} |
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public void clear() { |
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} |
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public Envelope getEnvelope() throws DataException { |
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if (noSpatialData) {
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return null; |
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} |
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if (!isFullExtentDirty){
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return this.fullEnvelope; |
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} |
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// FIXME in every changes when anyone ask for envelope it was regenerated.
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// if we assume that the envelope may not be the minimum in edit mode
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// this call must be very much faster
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FeatureAttributeDescriptor attr = featureStore.getDefaultFeatureType() |
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.getAttributeDescriptor( |
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featureStore.getDefaultFeatureType() |
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.getDefaultGeometryAttributeIndex()); |
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Envelope fullEnvelope = null;
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try {
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fullEnvelope = GeometryLocator.getGeometryManager().createEnvelope( |
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attr.getGeometrySubType()); |
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} catch (Exception e) { |
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// FIXME Exception
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throw new RuntimeException(e); |
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} |
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FeatureSet set = null;
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DisposableIterator iterator = null;
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try {
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set = featureStore.getFeatureSet(); |
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iterator = set.fastIterator(); |
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while (iterator.hasNext()) {
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Feature feature = (Feature) iterator.next(); |
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Envelope envelope = feature.getDefaultEnvelope(); |
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if(envelope!=null){ |
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fullEnvelope.add(envelope); |
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} |
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} |
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} finally {
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if (iterator != null) { |
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iterator.dispose(); |
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} |
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if (set != null) { |
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set.dispose(); |
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} |
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} |
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this.fullEnvelope = fullEnvelope;
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this.isFullExtentDirty = false; |
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return fullEnvelope;
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} |
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public void cancelModifies() { |
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if (noSpatialData) {
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return;
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} |
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if (featureIndex != null){ |
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Iterator iterator=feaOperation.iterator();
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while (iterator.hasNext()) {
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try {
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FeatureOperation fo = (FeatureOperation) iterator.next(); |
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if (fo.getOperation()==FeatureOperation.INSERT){
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featureIndex.delete(fo.getFeatureReference().getFeature()); |
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}else if (fo.getOperation()==FeatureOperation.DELETE){ |
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featureIndex.insert(fo.getFeatureReference().getFeature()); |
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} |
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} catch (DataException e) {
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} |
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} |
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} |
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if (originalEnvelope!=null){ |
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fullEnvelope = originalEnvelope.getGeometry().getEnvelope(); |
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} else {
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fullEnvelope = null;
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} |
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isFullExtentDirty = false;
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} |
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private class FeatureOperation{ |
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final static int INSERT=0; |
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final static int DELETE=1; |
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private FeatureReference ref;
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private int operation; |
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public FeatureOperation(FeatureReference fe,int op){ |
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ref=fe; |
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operation=op; |
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} |
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public FeatureReference getFeatureReference() {
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return ref;
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} |
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public void setFeatureReference(FeatureReference ref) { |
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this.ref = ref;
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} |
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public int getOperation() { |
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return operation;
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} |
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public void setOperation(int operation) { |
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this.operation = operation;
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} |
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} |
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} |