svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / feature / impl / featureset / DefaultFeatureSet.java @ 45195
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 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.feature.impl.featureset; |
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|
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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.exception.DataException; |
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import org.gvsig.fmap.dal.feature.EditableFeature; |
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import org.gvsig.fmap.dal.feature.EditableFeatureAttributeDescriptor; |
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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; |
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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.impl.DefaultFeatureType; |
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import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dispose.DisposableIterator; |
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import org.gvsig.tools.dispose.DisposeUtils; |
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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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|
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public class DefaultFeatureSet extends AbstractFeatureSet implements |
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FeatureSet, Observer {
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|
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protected static final int NO_CHECKED = -1; |
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protected static final int DEFAULT = 0; |
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protected static final int FILTERED = 1; |
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protected static final int ORDERED = 2; |
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protected static final int ORDERED_FILTERED = 3; |
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protected static final int EDITED = 4; |
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protected static final int EDITED_FILTERED = 5; |
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protected static final int ORDERD_EDITED = 6; |
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protected static final int ORDERED_EDITED_FILTER = 7; |
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|
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protected boolean sourceStoreModified; |
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protected boolean ownFeaturesModified; |
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protected DefaultFeatureStore store;
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protected List featureTypes; |
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protected FeatureQuery query;
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protected FeatureSetProvider provider;
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protected long size; |
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protected int iteratorMode; |
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protected List orderedData; |
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protected Feature featureToIgnoreNotification;
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protected DefaultFeatureStoreTransforms transform;
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protected FeatureQuery queryForProvider;
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protected FeatureType defaultFeatureType;
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protected FeatureType defatulFeatureTypeForProvider;
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protected boolean ignoreChanges; |
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private boolean disposed = false; |
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public DefaultFeatureSet(DefaultFeatureStore store, FeatureQuery query)
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throws DataException {
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DisposeUtils.bind(this);
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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.defaultFeatureType = this.store.getDefaultFeatureType(); |
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this.featureTypes.addAll(this.store.getFeatureTypes()); |
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} else {
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this.defaultFeatureType = this.store.getFeatureType(this.query); |
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List<EditableFeatureAttributeDescriptor> cols = this.query.getExtraColumn().getColumns(); |
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if (this.query!=null && cols!=null && !cols.isEmpty()) { |
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DefaultFeatureType featureTypeExtraCols = (DefaultFeatureType) this.defaultFeatureType.getCopy();
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featureTypeExtraCols.setExtraColumn(this.query.getExtraColumn());
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this.defaultFeatureType = featureTypeExtraCols;
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} |
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this.featureTypes.add(this.defaultFeatureType); |
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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.defaultFeatureType; |
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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.clearAttributeNames(); |
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FeatureType ftype = |
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transformsToUse.getSourceFeatureTypeFrom(this.defaultFeatureType);
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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.clearFilter(); |
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FeatureQueryOrder fqo = theQueryForProvider.getOrder(); |
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if (fqo != null) { |
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fqo.clear(); |
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} |
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return;
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|
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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;
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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.clearFilter(); |
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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 (String fieldName : fieldNames) { |
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if (fType.get(fieldName) == 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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@Override
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public FeatureType getDefaultFeatureType() {
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return this.defaultFeatureType; |
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} |
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@Override
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public List getFeatureTypes() { |
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return Collections.unmodifiableList(this.featureTypes); |
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} |
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@Override
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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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long limit = this.query.getLimit(); |
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long mySize = 0; |
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int mode = this.getIteratorMode(); |
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switch (mode) {
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case DEFAULT:
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case ORDERED:
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if (this.provider.isEmpty()) { |
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return 0; |
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} |
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mySize = provider.getSize(); |
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return (limit>0 && mySize>limit)? limit:mySize; |
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case FILTERED:
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case ORDERED_FILTERED:
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DisposableIterator iter = null;
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try {
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iter = this.fastIterator();
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while ((limit>0 && (mySize<limit)) || limit==0 ) { |
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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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|
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} finally {
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DisposeUtils.disposeQuietly(iter); |
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} |
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return mySize;
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case EDITED:
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case EDITED_FILTERED:
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case ORDERD_EDITED:
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case ORDERED_EDITED_FILTER:
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mySize = provider.getSize() |
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+ store.getFeatureManager().getDeltaSize(); |
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return (limit>0 && mySize>limit)? limit:mySize; |
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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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@Override
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public synchronized final void dispose() { |
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// Check if we have already been disposed, and don't do it again
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if (!disposed) {
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if (DisposeUtils.release(this)) { |
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try {
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doDispose(); |
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} catch (Exception ex) { |
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LOG.error("Error performing dispose", ex);
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} finally {
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disposed = true;
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} |
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} |
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} |
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} |
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|
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public void doDispose() { |
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if( this.store!=null ) { |
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this.store.deleteObserver(this); |
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this.store = null; |
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} |
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if( this.provider!=null ) { |
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this.provider.dispose();
|
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this.provider = null; |
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} |
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if (orderedData != null) { |
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orderedData.clear(); |
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this.orderedData = null; |
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} |
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this.featureToIgnoreNotification = 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.defaultFeatureType = null; |
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this.defatulFeatureTypeForProvider = null; |
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} |
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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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|
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String type = ((FeatureStoreNotification) notification).getType();
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|
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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.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.RESOURCE_CHANGED)) {
|
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if(!this.ignoreChanges) { |
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sourceStoreModified = true;
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return;
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} |
361 |
} |
362 |
if (type.equalsIgnoreCase(FeatureStoreNotification.AFTER_CANCELEDITING)) {
|
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if (ownFeaturesModified) {
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sourceStoreModified = true;
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return;
|
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} |
367 |
} |
368 |
} |
369 |
|
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protected void checkSourceStoreModified() { |
371 |
if (sourceStoreModified) {
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throw new ConcurrentDataModificationException(store == null ? "" |
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: store.getName()); |
374 |
} |
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} |
376 |
|
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@Override
|
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public DisposableIterator fastIterator(long index) throws DataException { |
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return fastIterator(index, 0); |
380 |
} |
381 |
|
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@Override
|
383 |
public DisposableIterator fastIterator(long index, long elements) throws DataException { |
384 |
if (index < 0) { |
385 |
throw new IndexOutOfBoundsException("The index (" + index |
386 |
+ ") is less than 0");
|
387 |
} |
388 |
DisposableIterator it; |
389 |
int mode = this.getIteratorMode(); |
390 |
|
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switch (mode) {
|
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case DEFAULT:
|
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it = new FastDefaultIterator(this, index, elements); |
394 |
break;
|
395 |
|
396 |
case FILTERED:
|
397 |
it = new FastFilteredIterator(this, index); |
398 |
break;
|
399 |
|
400 |
case ORDERED:
|
401 |
if (this.orderedData != null) { |
402 |
it = new FastOrderedIterator(this, index); |
403 |
} else {
|
404 |
it = new FastOrderedIterator(this, new FastDefaultIterator(this, 0, elements), index); |
405 |
} |
406 |
break;
|
407 |
|
408 |
case ORDERED_FILTERED:
|
409 |
if (this.orderedData != null) { |
410 |
it = new FastOrderedIterator(this, index); |
411 |
} else {
|
412 |
it = new FastOrderedIterator(this, new FastFilteredIterator( |
413 |
this, 0), index); |
414 |
} |
415 |
break;
|
416 |
|
417 |
case EDITED:
|
418 |
it = new FastEditedIterator(this, index); |
419 |
break;
|
420 |
|
421 |
case EDITED_FILTERED:
|
422 |
it = new FastEditedFilteredIterator(this, index); |
423 |
break;
|
424 |
|
425 |
case ORDERD_EDITED:
|
426 |
if (this.orderedData != null) { |
427 |
it = new FastOrderedIterator(this, index); |
428 |
} else {
|
429 |
it = new FastOrderedIterator(this, new FastEditedIterator( |
430 |
this, 0), index); |
431 |
} |
432 |
break;
|
433 |
|
434 |
case ORDERED_EDITED_FILTER:
|
435 |
if (this.orderedData != null) { |
436 |
it = new FastOrderedIterator(this, index); |
437 |
} else {
|
438 |
it = new FastOrderedIterator(this, |
439 |
new FastEditedFilteredIterator(this, 0), index); |
440 |
} |
441 |
break;
|
442 |
|
443 |
default:
|
444 |
throw new IllegalArgumentException(); |
445 |
} |
446 |
if( this.query!=null && this.query.getLimit()>0 ) { |
447 |
it = new LimitIterator(it,this.query.getLimit()); |
448 |
} |
449 |
return it;
|
450 |
} |
451 |
|
452 |
private class LimitIterator implements DisposableIterator { |
453 |
|
454 |
private final DisposableIterator it; |
455 |
private final long limit; |
456 |
private int count; |
457 |
|
458 |
private LimitIterator(DisposableIterator it, long limit) { |
459 |
this.it = it;
|
460 |
this.limit = limit;
|
461 |
this.count = 0; |
462 |
} |
463 |
|
464 |
@Override
|
465 |
public void dispose() { |
466 |
this.it.dispose();
|
467 |
} |
468 |
|
469 |
@Override
|
470 |
public boolean hasNext() { |
471 |
if( this.count>=this.limit ) { |
472 |
return false; |
473 |
} |
474 |
return this.it.hasNext(); |
475 |
} |
476 |
|
477 |
@Override
|
478 |
public Object next() { |
479 |
if( this.count>=this.limit ) { |
480 |
return null; |
481 |
} |
482 |
this.count++;
|
483 |
return this.it.next(); |
484 |
} |
485 |
|
486 |
@Override
|
487 |
public void remove() { |
488 |
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. |
489 |
} |
490 |
|
491 |
} |
492 |
|
493 |
@Override
|
494 |
public DisposableIterator iterator(long index) throws DataException { |
495 |
return iterator(index,0); |
496 |
} |
497 |
|
498 |
@Override
|
499 |
public DisposableIterator iterator(long index, long elements) throws DataException { |
500 |
if (index < 0) { |
501 |
throw new IndexOutOfBoundsException("The index (" + index |
502 |
+ ") is less than 0");
|
503 |
} |
504 |
DisposableIterator it; |
505 |
int mode = this.getIteratorMode(); |
506 |
|
507 |
switch (mode) {
|
508 |
case DEFAULT:
|
509 |
it = new DefaultIterator(this, index, elements); |
510 |
break;
|
511 |
|
512 |
case FILTERED:
|
513 |
it = new FilteredIterator(this, index); |
514 |
break;
|
515 |
|
516 |
case ORDERED:
|
517 |
if (orderedData != null) { |
518 |
it = new OrderedIterator(this, index); |
519 |
|
520 |
} else {
|
521 |
it = new OrderedIterator(this, new DefaultIterator(this, 0, elements),index); |
522 |
} |
523 |
break;
|
524 |
|
525 |
case ORDERED_FILTERED:
|
526 |
it = new OrderedIterator(this, new FilteredIterator(this, 0), |
527 |
index); |
528 |
break;
|
529 |
|
530 |
case EDITED:
|
531 |
it = new EditedIterator(this, index); |
532 |
break;
|
533 |
|
534 |
case EDITED_FILTERED:
|
535 |
it = new EditedFilteredIterator(this, index); |
536 |
break;
|
537 |
|
538 |
case ORDERD_EDITED:
|
539 |
it = new OrderedIterator(this, new EditedIterator(this, 0), index); |
540 |
break;
|
541 |
|
542 |
case ORDERED_EDITED_FILTER:
|
543 |
it = new OrderedIterator(this, |
544 |
new EditedFilteredIterator(this, 0), index); |
545 |
break;
|
546 |
|
547 |
default:
|
548 |
throw new IllegalArgumentException(); |
549 |
} |
550 |
|
551 |
if( this.query!=null && this.query.getLimit()>0 ) { |
552 |
it = new LimitIterator(it,this.query.getLimit()); |
553 |
} |
554 |
return it;
|
555 |
} |
556 |
|
557 |
private boolean providerCanOrder() { |
558 |
return this.provider.canOrder(); |
559 |
} |
560 |
|
561 |
private boolean providerCanFilter() { |
562 |
return this.provider.canFilter(); |
563 |
} |
564 |
|
565 |
private int getIteratorMode() { |
566 |
|
567 |
if (this.iteratorMode != NO_CHECKED) { |
568 |
return this.iteratorMode; |
569 |
} |
570 |
|
571 |
// TODO Tener en cuenta las transformaciones ???
|
572 |
|
573 |
if (store.isEditing() && (store.getFeatureTypeManager().hasChanges() || store.getFeatureManager().hasChanges())) {
|
574 |
if (this.query.hasOrder()) { // En edicion siempre ordeno yo. |
575 |
if (this.query.hasFilter()) { |
576 |
return ORDERED_EDITED_FILTER;
|
577 |
} else {
|
578 |
return ORDERD_EDITED;
|
579 |
} |
580 |
} else {
|
581 |
if (this.query.hasFilter()) { |
582 |
return EDITED_FILTERED;
|
583 |
} else {
|
584 |
return EDITED;
|
585 |
} |
586 |
} |
587 |
} else {
|
588 |
boolean useMyFilter = this.query.hasFilter(); |
589 |
boolean useMyOrder = this.query.hasOrder(); |
590 |
if (this.providerCanOrder() && this.transform.isEmpty()) { |
591 |
useMyOrder = false;
|
592 |
} |
593 |
if (this.providerCanFilter() && this.transform.isEmpty()) { |
594 |
useMyFilter = false;
|
595 |
} |
596 |
|
597 |
if (useMyOrder) {
|
598 |
if (useMyFilter) {
|
599 |
return ORDERED_FILTERED;
|
600 |
} else {
|
601 |
return ORDERED;
|
602 |
} |
603 |
} else {
|
604 |
if (useMyFilter) {
|
605 |
return FILTERED;
|
606 |
} else {
|
607 |
return DEFAULT;
|
608 |
} |
609 |
} |
610 |
} |
611 |
|
612 |
} |
613 |
|
614 |
@Override
|
615 |
public void delete(Feature feature) throws DataException { |
616 |
this.featureToIgnoreNotification = feature;
|
617 |
this.store.delete(feature);
|
618 |
if (this.size > 0) { |
619 |
this.size--;
|
620 |
} |
621 |
this.featureToIgnoreNotification = null; |
622 |
this.ownFeaturesModified = true; |
623 |
} |
624 |
|
625 |
@Override
|
626 |
public void insert(EditableFeature feature) throws DataException { |
627 |
this.featureToIgnoreNotification = feature;
|
628 |
this.store.insert(feature);
|
629 |
if (this.size >= 0) { |
630 |
this.size++;
|
631 |
} |
632 |
this.featureToIgnoreNotification = null; |
633 |
this.ownFeaturesModified = true; |
634 |
} |
635 |
|
636 |
@Override
|
637 |
public void update(EditableFeature feature) throws DataException { |
638 |
this.featureToIgnoreNotification = feature;
|
639 |
this.store.update(feature);
|
640 |
this.featureToIgnoreNotification = null; |
641 |
this.ownFeaturesModified = true; |
642 |
} |
643 |
|
644 |
@Override
|
645 |
public void commitChanges() throws DataException { |
646 |
this.ignoreChanges = true; |
647 |
this.store.commitChanges();
|
648 |
this.ignoreChanges = false; |
649 |
|
650 |
} |
651 |
|
652 |
@Override
|
653 |
public FeatureStore getFeatureStore() {
|
654 |
return store;
|
655 |
} |
656 |
|
657 |
} |