svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_dal / src / org / gvsig / fmap / dal / feature / impl / featureset / DefaultFeatureSet.java @ 38417
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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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package org.gvsig.fmap.dal.feature.impl.featureset; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.NoSuchElementException; |
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|
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import org.gvsig.fmap.dal.DataStore; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.EditableFeature; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureIndexes; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureQueryOrder.FeatureQueryOrderMember; |
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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.FeatureStoreNotification; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.dal.feature.exception.ConcurrentDataModificationException; |
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import org.gvsig.fmap.dal.feature.exception.FeatureSetInitializeException; |
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import org.gvsig.fmap.dal.feature.impl.DefaultFeatureStore; |
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import org.gvsig.fmap.dal.feature.impl.DefaultFeatureStoreTransforms; |
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import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
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import org.gvsig.tools.dispose.DisposableIterator; |
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import org.gvsig.tools.dynobject.DynObjectSet; |
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import org.gvsig.tools.evaluator.Evaluator; |
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import org.gvsig.tools.exception.BaseException; |
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import org.gvsig.tools.observer.Observable; |
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import org.gvsig.tools.observer.Observer; |
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import org.gvsig.tools.visitor.VisitCanceledException; |
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import org.gvsig.tools.visitor.Visitor; |
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import org.gvsig.tools.visitor.impl.AbstractIndexedVisitable; |
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|
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public class DefaultFeatureSet extends AbstractIndexedVisitable implements |
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FeatureSet, Observer {
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|
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private static final int NO_CHECKED = -1; |
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private static final int DEFAULT = 0; |
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private static final int FILTERED = 1; |
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private static final int ORDERED = 2; |
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private static final int ORDERED_FILTERED = 3; |
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private static final int EDITED = 4; |
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private static final int EDITED_FILTERED = 5; |
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private static final int ORDERD_EDITED = 6; |
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private static final int ORDERED_EDITED_FILTER = 7; |
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|
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private boolean sourceStoreModified; |
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private boolean ownFeaturesModified; |
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DefaultFeatureStore store; |
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private List featureTypes; |
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FeatureQuery query; |
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FeatureSetProvider provider; |
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private long size; |
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private int iteratorMode; |
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List orderedData;
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private Feature featureToIgnoreNotification;
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DefaultFeatureStoreTransforms transform; |
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private FeatureQuery queryForProvider;
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private FeatureType defatulFeatureType;
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private FeatureType defatulFeatureTypeForProvider;
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public DefaultFeatureSet(DefaultFeatureStore store, FeatureQuery query)
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throws DataException {
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this.featureToIgnoreNotification = null; |
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this.iteratorMode = NO_CHECKED;
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this.sourceStoreModified = false; |
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this.ownFeaturesModified = false; |
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this.size = -1; |
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this.orderedData = null; |
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this.store = store;
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if (this.store.isEditing()) { |
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this.transform = this.store.getFeatureTypeManager().getTransforms(); |
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} else {
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this.transform =
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(DefaultFeatureStoreTransforms) store.getTransforms(); |
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} |
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this.query = query;
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try {
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this.queryForProvider = (FeatureQuery) query.clone();
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} catch (CloneNotSupportedException e) { |
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throw new FeatureSetInitializeException(e); |
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} |
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this.featureTypes = new ArrayList(); |
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if (this.query.getFeatureTypeId() == null |
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&& this.query.getAttributeNames() == null) { |
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this.defatulFeatureType = this.store.getDefaultFeatureType(); |
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this.featureTypes.addAll(this.store.getFeatureTypes()); |
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} else {
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this.defatulFeatureType = this.store.getFeatureType(this.query); |
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this.featureTypes.add(this.defatulFeatureType); |
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} |
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if (this.transform != null && !this.transform.isEmpty()) { |
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this.fixQueryForProvider(this.queryForProvider, this.transform); |
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} else {
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this.defatulFeatureTypeForProvider = this.defatulFeatureType; |
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} |
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FeatureIndexes indexes = store.getIndexes(); |
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if (this.queryForProvider.hasFilter() && indexes != null |
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&& indexes.areValid()) { |
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this.provider =
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(FeatureSetProvider) indexes |
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.getFeatureSet(this.queryForProvider.getFilter());
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} |
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if (this.provider == null) { |
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this.provider =
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this.store.getProvider().createSet(this.queryForProvider, |
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this.defatulFeatureTypeForProvider);
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} |
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this.store.addObserver(this); |
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} |
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private void fixQueryForProvider(FeatureQuery theQueryForProvider, |
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DefaultFeatureStoreTransforms transformsToUse) throws DataException {
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theQueryForProvider.setAttributeNames(null);
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FeatureType ftype = |
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transformsToUse.getSourceFeatureTypeFrom(this.defatulFeatureType);
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theQueryForProvider.setFeatureTypeId(ftype.getId()); |
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this.defatulFeatureTypeForProvider = ftype;
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if (transformsToUse.isTransformsOriginalValues()) {
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theQueryForProvider.setFilter(null);
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theQueryForProvider.getOrder().clear(); |
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return;
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} |
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// Filter
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Evaluator filter = theQueryForProvider.getFilter(); |
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if (filter != null) { |
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boolean canUseFilter = true; |
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if (filter.getFieldsInfo() == null) { |
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canUseFilter = false;
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} else {
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canUseFilter = areEvaluatorFieldsInAttributes(filter, ftype); |
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} |
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if (!canUseFilter) {
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theQueryForProvider.setFilter(null);
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} |
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} |
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// Order
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if (theQueryForProvider.hasOrder()) {
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boolean canUseOrder = true; |
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Iterator iter = theQueryForProvider.getOrder().iterator();
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FeatureQueryOrderMember item; |
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while (iter.hasNext()) {
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item = (FeatureQueryOrderMember) iter.next(); |
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if (item.hasEvaluator()) {
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if (!areEvaluatorFieldsInAttributes(item.getEvaluator(),
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ftype)) { |
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canUseOrder = false;
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break;
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} |
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} else {
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if (ftype.get(item.getAttributeName()) == null) { |
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canUseOrder = false;
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break;
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} |
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} |
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} |
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if (!canUseOrder) {
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theQueryForProvider.getOrder().clear(); |
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} |
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} |
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} |
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private boolean areEvaluatorFieldsInAttributes(Evaluator evaluator, |
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FeatureType fType) { |
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if (evaluator.getFieldsInfo() == null) { |
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return false; |
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} |
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String[] fieldNames = evaluator.getFieldsInfo().getFieldNames(); |
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if (fieldNames.length == 0) { |
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return false; |
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} else {
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for (int i = 0; i < fieldNames.length; i++) { |
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if (fType.get(fieldNames[i]) == null) { |
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return false; |
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} |
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} |
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} |
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return true; |
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} |
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public FeatureType getDefaultFeatureType() {
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return this.defatulFeatureType; |
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} |
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public List getFeatureTypes() { |
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return Collections.unmodifiableList(this.featureTypes); |
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} |
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public long getSize() throws DataException { |
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this.checkSourceStoreModified();
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if (size < 0) { |
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size = calculateSize(); |
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} |
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return size;
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} |
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private long calculateSize() throws DataException { |
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int mode = this.getIteratorMode(); |
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if ((mode & EDITED) != EDITED) {
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if (this.provider.isEmpty()) { |
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return 0; |
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} |
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} |
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if ((mode & FILTERED) == FILTERED) {
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long mySize = 0; |
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DisposableIterator iter = null;
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try {
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iter = this.fastIterator();
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while (true) { |
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iter.next(); |
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mySize++; |
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} |
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} catch (NoSuchElementException e) { |
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return mySize;
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} finally {
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iter.dispose(); |
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} |
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} else
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if ((mode & EDITED) == EDITED) {
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return provider.getSize()
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+ store.getFeatureManager().getDeltaSize(); |
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} |
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return provider.getSize();
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} |
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public void dispose() { |
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this.store.deleteObserver(this); |
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this.provider.dispose();
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this.provider = null; |
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this.featureToIgnoreNotification = null; |
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if (orderedData != null) { |
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orderedData.clear(); |
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} |
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this.orderedData = null; |
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this.store = null; |
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this.transform = null; |
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this.query = null; |
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this.queryForProvider = null; |
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this.featureTypes = null; |
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this.defatulFeatureType = null; |
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this.defatulFeatureTypeForProvider = null; |
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} |
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public boolean isFromStore(DataStore store) { |
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return this.store.equals(store); |
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} |
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public void update(Observable obsevable, Object notification) { |
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if (sourceStoreModified) {
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return;
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} |
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String type = ((FeatureStoreNotification) notification).getType();
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if (type.equalsIgnoreCase(FeatureStoreNotification.AFTER_INSERT)
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|| type.equalsIgnoreCase(FeatureStoreNotification.AFTER_DELETE) |
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|| type.equalsIgnoreCase(FeatureStoreNotification.AFTER_UPDATE)) { |
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if (this.featureToIgnoreNotification == ((FeatureStoreNotification) notification) |
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.getFeature()) { |
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return;
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} |
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sourceStoreModified = true;
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return;
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} |
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if (type.equalsIgnoreCase(FeatureStoreNotification.AFTER_UPDATE_TYPE)
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|| type.equalsIgnoreCase(FeatureStoreNotification.AFTER_REDO) |
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|| type.equalsIgnoreCase(FeatureStoreNotification.AFTER_UNDO) |
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|| type.equalsIgnoreCase(FeatureStoreNotification.AFTER_REFRESH) |
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|| type |
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.equalsIgnoreCase(FeatureStoreNotification.COMPLEX_NOTIFICATION) |
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|| type.equalsIgnoreCase(FeatureStoreNotification.AFTER_CLOSE) |
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|| type.equalsIgnoreCase(FeatureStoreNotification.AFTER_DISPOSE) |
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|| type.equalsIgnoreCase(FeatureStoreNotification.RESOURCE_CHANGED) |
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|| type.equalsIgnoreCase(FeatureStoreNotification.TRANSFORM_CHANGE)) { |
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sourceStoreModified = true;
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return;
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} |
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if (type.equalsIgnoreCase(FeatureStoreNotification.AFTER_CANCELEDITING)
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&& ownFeaturesModified) { |
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sourceStoreModified = true;
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return;
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} |
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} |
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protected void doAccept(Visitor visitor, long firstValueIndex) |
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throws VisitCanceledException, BaseException {
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DisposableIterator iterator = fastIterator(firstValueIndex); |
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try {
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while (iterator.hasNext()) {
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Feature feature = (Feature) iterator.next(); |
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visitor.visit(feature); |
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} |
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} finally {
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iterator.dispose(); |
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} |
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} |
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protected void checkSourceStoreModified() { |
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if (sourceStoreModified) {
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throw new ConcurrentDataModificationException(store == null ? "" |
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: store.getName()); |
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} |
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} |
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public boolean isEmpty() throws DataException { |
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checkSourceStoreModified(); |
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return this.getSize() == 0; |
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} |
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public DisposableIterator fastIterator() throws DataException { |
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return this.fastIterator(0); |
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} |
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public DisposableIterator fastIterator(long index) throws DataException { |
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if (index < 0) { |
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throw new IndexOutOfBoundsException("The index (" + index |
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+ ") is less than 0");
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} |
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int mode = this.getIteratorMode(); |
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switch (mode) {
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case DEFAULT:
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return new FastDefaultIterator(this, index); |
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case FILTERED:
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return new FastFilteredIterator(this, index); |
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case ORDERED:
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if (this.orderedData != null) { |
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return new FastOrderedIterator(this, index); |
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} else {
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return new FastOrderedIterator(this, new FastDefaultIterator( |
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this, 0), index); |
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} |
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case ORDERED_FILTERED:
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if (this.orderedData != null) { |
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return new FastOrderedIterator(this, index); |
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} else {
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return new FastOrderedIterator(this, new FastFilteredIterator( |
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this, 0), index); |
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} |
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case EDITED:
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return new FastEditedIterator(this, index); |
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case EDITED_FILTERED:
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return new FastEditedFilteredIterator(this, index); |
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case ORDERD_EDITED:
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if (this.orderedData != null) { |
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return new FastOrderedIterator(this, index); |
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} else {
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return new FastOrderedIterator(this, new FastEditedIterator( |
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this, 0), index); |
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} |
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|
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case ORDERED_EDITED_FILTER:
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if (this.orderedData != null) { |
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return new FastOrderedIterator(this, index); |
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} else {
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return new FastOrderedIterator(this, |
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new FastEditedFilteredIterator(this, 0), index); |
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} |
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default:
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throw new IllegalArgumentException(); |
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} |
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} |
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|
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public DisposableIterator iterator() throws DataException { |
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return this.iterator(0); |
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} |
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|
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public DisposableIterator iterator(long index) throws DataException { |
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if (index < 0) { |
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throw new IndexOutOfBoundsException("The index (" + index |
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+ ") is less than 0");
|
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} |
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int mode = this.getIteratorMode(); |
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|
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switch (mode) {
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case DEFAULT:
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return new DefaultIterator(this, index); |
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|
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case FILTERED:
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return new FilteredIterator(this, index); |
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|
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case ORDERED:
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if (orderedData != null) { |
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return new OrderedIterator(this, index); |
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|
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} else {
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return new OrderedIterator(this, new DefaultIterator(this, 0), |
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index); |
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} |
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|
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case ORDERED_FILTERED:
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return new OrderedIterator(this, new FilteredIterator(this, 0), |
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index); |
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|
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case EDITED:
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return new EditedIterator(this, index); |
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|
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case EDITED_FILTERED:
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return new EditedFilteredIterator(this, index); |
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|
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case ORDERD_EDITED:
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return new OrderedIterator(this, new EditedIterator(this, 0), index); |
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|
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case ORDERED_EDITED_FILTER:
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return new OrderedIterator(this, |
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new EditedFilteredIterator(this, 0), index); |
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|
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default:
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throw new IllegalArgumentException(); |
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} |
452 |
|
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} |
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|
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private boolean providerCanOrder() { |
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return this.provider.canOrder(); |
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} |
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|
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private boolean providerCanFilter() { |
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return this.provider.canFilter(); |
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} |
462 |
|
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private int getIteratorMode() { |
464 |
|
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if (this.iteratorMode != NO_CHECKED) { |
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return this.iteratorMode; |
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} |
468 |
|
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// TODO Tener en cuenta las transformaciones ???
|
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|
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if (store.isEditing() && store.getFeatureManager().hasChanges()) {
|
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if (this.query.hasOrder()) { // En edicion siempre ordeno yo. |
473 |
if (this.query.hasFilter()) { |
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return ORDERED_EDITED_FILTER;
|
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} else {
|
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return ORDERD_EDITED;
|
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} |
478 |
} else {
|
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if (this.query.hasFilter()) { |
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return EDITED_FILTERED;
|
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} else {
|
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return EDITED;
|
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} |
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} |
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} else {
|
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boolean useMyFilter = this.query.hasFilter(); |
487 |
boolean useMyOrder = this.query.hasOrder(); |
488 |
if (this.providerCanOrder() && this.transform.isEmpty()) { |
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useMyOrder = false;
|
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} |
491 |
if (this.providerCanFilter() && this.transform.isEmpty()) { |
492 |
useMyFilter = false;
|
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} |
494 |
|
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if (useMyOrder) {
|
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if (useMyFilter) {
|
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return ORDERED_FILTERED;// ORDERED_FILTERED; |
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} else {
|
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return ORDERED;// ORDERED; |
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} |
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} else {
|
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if (useMyFilter) {
|
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return FILTERED;// FILTERED; |
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} else {
|
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return DEFAULT;// DEFAULT; |
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} |
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} |
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} |
509 |
|
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} |
511 |
|
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public void delete(Feature feature) throws DataException { |
513 |
this.featureToIgnoreNotification = feature;
|
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this.store.delete(feature);
|
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if (this.size > 0) { |
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this.size--;
|
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} |
518 |
this.featureToIgnoreNotification = null; |
519 |
this.ownFeaturesModified = true; |
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} |
521 |
|
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public void insert(EditableFeature feature) throws DataException { |
523 |
this.featureToIgnoreNotification = feature;
|
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this.store.insert(feature);
|
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if (this.size >= 0) { |
526 |
this.size++;
|
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} |
528 |
this.featureToIgnoreNotification = null; |
529 |
this.ownFeaturesModified = true; |
530 |
} |
531 |
|
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public void update(EditableFeature feature) throws DataException { |
533 |
this.featureToIgnoreNotification = feature;
|
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this.store.update(feature);
|
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this.featureToIgnoreNotification = null; |
536 |
this.ownFeaturesModified = true; |
537 |
} |
538 |
|
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public DynObjectSet getDynObjectSet() {
|
540 |
return this.getDynObjectSet(true); |
541 |
} |
542 |
|
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public DynObjectSet getDynObjectSet(boolean fast) { |
544 |
return new DynObjectSetFeatureSetFacade(this, store, fast); |
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} |
546 |
|
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public FeatureStore getFeatureStore() {
|
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return store;
|
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} |
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} |