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 / FeatureManager.java @ 40559
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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; |
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import java.util.Collection; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.LinkedHashMap; |
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import java.util.LinkedHashSet; |
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import java.util.Map; |
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import java.util.NoSuchElementException; |
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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.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureReference; |
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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.dal.feature.impl.expansionadapter.ExpansionAdapter; |
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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 FeatureManager { |
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private ExpansionAdapter expansionAdapter;
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private Collection deleted = new LinkedHashSet();//<FeatureID> |
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private int deltaSize=0; |
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private Map added = new LinkedHashMap(); |
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private Map addedAndDeleted = new LinkedHashMap(); |
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private HashMap modifiedFromOriginal=new HashMap(); |
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public FeatureManager(ExpansionAdapter expansionAdapter){
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this.expansionAdapter=expansionAdapter;
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} |
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/**
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* Deletes feature from this manager.
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* @param id
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* @return The deleted feature or null if the
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* feature had not been edited or previously added in the editing session
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*/
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public Feature delete(FeatureReference id) {
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deleted.add(id); |
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Integer num = (Integer) added.remove(id); |
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Feature feature=null;
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if (num == null || num.intValue() == -1) { |
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num = (Integer) modifiedFromOriginal.remove(id);
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if (num != null) { |
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feature = (Feature) expansionAdapter.getObject(num.intValue()); |
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} |
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// if num is null here, method returns null
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}else{
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feature = (Feature) expansionAdapter.getObject(num.intValue()); |
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addedAndDeleted.put(id, num); |
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} |
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deltaSize--; |
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return feature;
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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 add(Feature feature) { |
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int pos = expansionAdapter.addObject(feature);
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added.put(feature.getReference(),new Integer(pos)); |
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deleted.remove(feature.getReference()); |
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deltaSize++; |
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} |
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/**
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* DOCUMENT ME!
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* @param id DOCUMENT ME!
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*/
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public Feature deleteLastFeature() {
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expansionAdapter.deleteLastObject(); |
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Feature feature=(Feature)expansionAdapter.getObject(expansionAdapter.getSize()-1);
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added.remove(feature.getReference()); |
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modifiedFromOriginal.remove(feature.getReference()); |
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deltaSize--; |
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return feature;
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} |
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/**
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* Returns a Feature of the default type.
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*
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* @param id
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* the feature reference
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* @param store
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* the store to get the feature from
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* @return a Feature with the given reference
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* @throws DataException
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* if there is an error getting the Feature
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*/
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public Feature get(FeatureReference id, FeatureStore store)
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throws DataException {
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return get(id, store, null); |
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} |
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/**
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* Returns a Feature of the given type.
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*
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* @param id
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* the feature reference
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* @param store
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* the store to get the feature from
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* @param featureType
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* the type of the feature to return
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* @return a Feature with the given reference
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* @throws DataException
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* if there is an error getting the Feature
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*/
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public Feature get(FeatureReference id, FeatureStore store,
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FeatureType featureType) throws DataException {
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// FIXME: y si el featuretype que paso esta modificado.
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// Deberia buscarlo en el featuretypemanager ?
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//
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// Si no existe feature con ese id... ? retorna null ?
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// en EditedDefaultIterator se hace uso de ese comportamiento.
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//
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Integer intNum = ((Integer) added.get(id)); |
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if (intNum == null){ |
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intNum =((Integer) modifiedFromOriginal.get(id));
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if (intNum == null){ |
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//If the feature has been added and deleted
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intNum = (Integer)addedAndDeleted.get(id);
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if (intNum == null){ |
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return null; |
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} |
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} |
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} |
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int num = intNum.intValue();
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if (num==-1) { |
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return null; |
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} |
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Feature feature=(Feature)expansionAdapter.getObject(num); |
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if (featureType== null){ |
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featureType = store.getDefaultFeatureType(); |
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} |
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return getCorrectFeature(feature, store,featureType);
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} |
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private Feature getCorrectFeature(Feature feature, FeatureStore store,
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FeatureType featureType) throws DataException {
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Iterator iterator=featureType.iterator();
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EditableFeature newFeature=feature.getEditable();//store.createNewFeature(featureType, false);
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FeatureType orgType = feature.getType(); |
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int orgIndex;
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while (iterator.hasNext()) {
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FeatureAttributeDescriptor fad = (FeatureAttributeDescriptor) iterator.next(); |
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orgIndex = orgType.getIndex(fad.getName()); |
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if (orgIndex<0){ |
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continue;
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} |
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if (fad.isAutomatic() || fad.isReadOnly()
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|| fad.getEvaluator() != null) {
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continue;
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} |
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Object value = feature.get(orgIndex);
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if (value == null && !fad.allowNull()) { |
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continue;
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} |
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newFeature.set(orgIndex, value); |
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} |
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return newFeature.getNotEditableCopy();
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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 int update(Feature feature, Feature oldFeature) { |
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int oldNum=-1; |
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int num = expansionAdapter.addObject(feature);
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FeatureReference id=feature.getReference(); |
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if (added.containsKey(id)){
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oldNum=((Integer)added.get(id)).intValue();
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added.put(id,new Integer(num)); |
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}else{
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if (modifiedFromOriginal.get(id)!=null) { |
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oldNum=((Integer)modifiedFromOriginal.get(id)).intValue();
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} |
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modifiedFromOriginal.put(id,new Integer(num)); |
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} |
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return oldNum;
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} |
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/**
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* DOCUMENT ME!
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*
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* @param id DOCUMENT ME!
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*/
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public void restore(FeatureReference id) { |
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deleted.remove(id); |
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deltaSize++; |
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} |
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public void restore(FeatureReference id,int num){ |
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if (added.containsKey(id)){
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added.put(id,new Integer(num)); |
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}else{
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modifiedFromOriginal.put(id,new Integer(num)); |
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} |
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} |
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public boolean isDeleted(Feature feature){ |
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return deleted.contains(feature.getReference());
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} |
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public boolean isDeleted(FeatureReference featureID) { |
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return deleted.contains(featureID);
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} |
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public void clear() { |
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added.clear(); |
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modifiedFromOriginal.clear(); |
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expansionAdapter.close(); |
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deleted.clear();//<FeatureID>
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addedAndDeleted.clear(); |
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deltaSize=0;
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} |
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public boolean hasChanges() { |
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return added.size()>0 || modifiedFromOriginal.size() > 0 || deleted.size() > 0; |
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} |
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public Iterator getDeleted() { |
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return new DeletedIterator(); |
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} |
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class DeletedIterator implements Iterator { |
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private Boolean hasnext = null; |
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private Iterator iter; |
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private DefaultFeatureReference obj;
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public DeletedIterator(){
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iter = deleted.iterator(); |
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} |
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public boolean hasNext() { |
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if (hasnext != null) { |
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return hasnext.booleanValue();
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} |
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hasnext = Boolean.FALSE;
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while (iter.hasNext()) {
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obj = (DefaultFeatureReference) iter.next(); |
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if (obj.isNewFeature()) {
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continue;
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} |
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hasnext = Boolean.TRUE;
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break;
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} |
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return hasnext.booleanValue();
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} |
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public Object next() { |
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if (!hasNext()) {
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throw new NoSuchElementException(); |
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} |
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hasnext = null;
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return obj;
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} |
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public void remove() { |
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throw new UnsupportedOperationException(); |
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} |
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} |
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public Iterator getInserted() { |
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return new InsertedIterator(); |
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} |
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class InsertedIterator implements Iterator { |
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private Iterator addedIter; |
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private DefaultFeature obj;
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private Boolean hasnext = null; |
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public InsertedIterator(){
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addedIter = added.values().iterator(); |
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} |
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public boolean hasNext() { |
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if (hasnext != null) { |
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return hasnext.booleanValue();
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} |
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hasnext = Boolean.FALSE;
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int pos;
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while (addedIter.hasNext()) {
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pos = ((Integer) addedIter.next()).intValue();
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obj = (DefaultFeature) expansionAdapter.getObject(pos); |
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if (!deleted.contains(obj.getReference())) {
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hasnext = Boolean.TRUE;
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break;
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} |
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} |
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return hasnext.booleanValue();
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} |
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public Object next() { |
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if (!hasNext()) {
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throw new NoSuchElementException(); |
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} |
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hasnext = null;
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return obj.getData();
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} |
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public void remove() { |
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addedIter.remove(); |
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} |
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} |
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public Iterator getUpdated() { |
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return new UpdatedIterator(); |
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} |
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class UpdatedIterator implements Iterator{ |
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private Boolean hasnext = null; |
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private Iterator iter; |
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private DefaultFeature obj;
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private int pos; |
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public UpdatedIterator() {
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iter = expansionAdapter.iterator(); |
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pos = -1;
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} |
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public boolean hasNext() { |
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if (hasnext != null) { |
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return hasnext.booleanValue();
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} |
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hasnext = Boolean.FALSE;
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while (iter.hasNext()) {
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pos++; |
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obj = (DefaultFeature) iter.next(); |
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if (deleted.contains(obj.getReference())){
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continue;
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}else if (!modifiedFromOriginal.containsValue(new Integer(pos))){ |
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continue;
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}else {
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hasnext = Boolean.TRUE;
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break;
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} |
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} |
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return hasnext.booleanValue();
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} |
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public Object next() { |
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if (!hasNext()) {
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throw new NoSuchElementException(); |
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} |
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hasnext = null;
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return obj.getData();
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} |
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public void remove() { |
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throw new UnsupportedOperationException(); |
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} |
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} |
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public boolean hasNews() { |
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return !added.isEmpty();
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} |
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public long getDeltaSize() { |
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return deltaSize;
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} |
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} |