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 / LargeFeatureReferenceSelection.java @ 45647
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/*
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2020 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, see <https://www.gnu.org/licenses/>.
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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.Iterator; |
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import java.util.List; |
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import java.util.Set; |
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import org.gvsig.fmap.dal.DataStore; |
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import org.gvsig.fmap.dal.DataStoreNotification; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureReference; |
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import org.gvsig.fmap.dal.feature.FeatureReferenceSelection; |
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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.tools.ToolsLocator; |
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import org.gvsig.tools.dispose.DisposeUtils; |
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import org.gvsig.tools.dispose.impl.AbstractDisposable; |
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import org.gvsig.tools.dynobject.DynStruct; |
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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.observer.impl.DelegateWeakReferencingObservable; |
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import org.gvsig.tools.persistence.PersistentState; |
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import org.gvsig.tools.persistence.exception.PersistenceException; |
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import org.gvsig.tools.util.Size64; |
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import org.gvsig.tools.visitor.Visitor; |
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/**
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*
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* @author gvSIG Team
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*/
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@SuppressWarnings("UseSpecificCatch") |
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public class LargeFeatureReferenceSelection extends AbstractDisposable |
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implements FeatureReferenceSelection {
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public static final String DYNCLASS_PERSISTENT_NAME = "LargeFeatureReferenceSelection"; |
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private Set<String> selection; |
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private DefaultFeatureStore featureStore;
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private Boolean available = null; |
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private DelegateWeakReferencingObservable delegateObservable
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= new DelegateWeakReferencingObservable(this); |
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public LargeFeatureReferenceSelection(DefaultFeatureStore featureStore) {
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super();
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this.featureStore = featureStore;
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DisposeUtils.bind(this.featureStore);
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this.selection = featureStore.getManager().createLargeSet();
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} |
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LargeFeatureReferenceSelection(FeatureStore featureStore, FeatureSelectionHelper helper) { |
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super();
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this.featureStore = (DefaultFeatureStore) featureStore;
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DisposeUtils.bind(this.featureStore);
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this.selection = this.featureStore.getManager().createLargeSet(); |
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} |
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/**
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* Constructor used by the persistence manager. Don't use directly. After to
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* invoke this method, the persistence manager calls the the method
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* {@link #loadFromState(PersistentState)} to set the values of the internal
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* attributes that this class needs to work.
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*/
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LargeFeatureReferenceSelection() { |
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super();
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} |
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public FeatureStore getFeatureStore() {
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return featureStore;
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} |
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@Override
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public boolean select(FeatureReference reference) { |
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return this.selection.add(reference.getCode()); |
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} |
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@Override
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public boolean deselect(FeatureReference reference) { |
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boolean change;
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change = this.selection.contains(reference.getCode());
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this.selection.remove(reference.getCode());
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if (change) {
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notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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} |
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return change;
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} |
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@Override
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public void selectAll() throws DataException { |
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try {
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this.featureStore.accept((Object obj) -> { |
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selection.add(((Feature) obj).getReference().getCode()); |
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}); |
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} catch (BaseException ex) {
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throw new RuntimeException("Can't select all", ex); |
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} |
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} |
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@Override
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public void deselectAll() throws DataException { |
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this.selection.clear();
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} |
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@Override
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public boolean isSelected(FeatureReference reference) { |
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return this.selection.contains(reference.getCode()); |
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} |
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@Override
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public void reverse() { |
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try {
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this.featureStore.accept((Object obj) -> { |
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String key = ((Feature) obj).getReference().getCode();
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if(selection.contains(key)) {
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selection.remove(key); |
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} else {
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selection.add(key); |
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} |
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}); |
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} catch (BaseException ex) {
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throw new RuntimeException("Can't reverse selection", ex); |
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} |
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} |
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public boolean isEmpty() { |
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if (this.selection == null) { |
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return true; |
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} |
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return this.getSelectedCount() == 0; |
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} |
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@Override
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public long getSelectedCount() { |
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try {
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return ((Size64)selection).size64();
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} catch(Exception ex) { |
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return selection.size();
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} |
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} |
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@Override
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public Iterator referenceIterator() { |
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Iterator<String> it = selection.iterator(); |
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Iterator<FeatureReference> itFeatureReferences = new Iterator<FeatureReference>() { |
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@Override
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public boolean hasNext() { |
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return it.hasNext();
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} |
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@Override
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public FeatureReference next() {
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String code = it.next();
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FeatureReference fref = featureStore.getFeatureReference(code); |
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return fref;
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} |
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}; |
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return itFeatureReferences;
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} |
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@Override
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public boolean isAvailable() { |
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if (this.available == null) { |
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this.available = false; |
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if(this.featureStore != null){ |
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try {
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FeatureType type = this.featureStore.getDefaultFeatureType();
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this.available = type.supportReferences();
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} catch (DataException ex) {
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this.available = false; |
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} |
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} |
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} |
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return this.available; |
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} |
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@Override
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public boolean isFromStore(DataStore store) { |
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return featureStore.equals(store);
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} |
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@Override
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public void accept(Visitor visitor) throws BaseException { |
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for (String string : selection) { |
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FeatureReference fref = featureStore.getFeatureReference(string); |
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visitor.visit(fref); |
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} |
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} |
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@Override
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protected void doDispose() throws BaseException { |
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delegateObservable.deleteObservers(); |
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deselectAll(); |
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DisposeUtils.dispose(this.featureStore);
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DisposeUtils.dispose(this.selection);
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this.delegateObservable = null; |
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this.featureStore = null; |
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this.selection = null; |
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} |
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@Override
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public void addObserver(Observer observer) { |
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delegateObservable.addObserver(observer); |
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} |
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@Override
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public void beginComplexNotification() { |
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delegateObservable.beginComplexNotification(); |
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} |
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@Override
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public void deleteObserver(Observer observer) { |
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delegateObservable.deleteObserver(observer); |
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} |
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@Override
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public void deleteObservers() { |
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delegateObservable.deleteObservers(); |
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} |
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@Override
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public void disableNotifications() { |
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delegateObservable.disableNotifications(); |
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} |
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@Override
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public void enableNotifications() { |
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delegateObservable.enableNotifications(); |
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} |
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@Override
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public void endComplexNotification() { |
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// We don't want to notify many times in a complex notification
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// scenario, so ignore notifications if in complex.
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// Only one notification will be sent when the complex notification
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// ends.
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delegateObservable.notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
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delegateObservable.endComplexNotification(); |
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} |
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public boolean inComplex() { |
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return delegateObservable.inComplex();
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} |
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public boolean isEnabledNotifications() { |
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return delegateObservable.isEnabledNotifications();
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} |
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public void notifyObservers() { |
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// We don't want to notify many times in a complex notification
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// scenario, so ignore notifications if in complex.
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// Only one notification will be sent when the complex notification
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// ends.
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if (!delegateObservable.inComplex()) {
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delegateObservable.notifyObservers(); |
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} |
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} |
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public void notifyObservers(Object arg) { |
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if (!delegateObservable.inComplex()) {
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delegateObservable.notifyObservers(arg); |
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} |
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} |
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// @Override
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// public Object clone() throws CloneNotSupportedException {
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// LargeFeatureReferenceSelection clone = (LargeFeatureReferenceSelection) super.clone();
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// // Original observers aren't cloned
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// clone.delegateObservable = new DelegateWeakReferencingObservable(clone);
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// // Clone internal data
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// clone.selection = new LargeMapImpl<>();
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// for (Map.Entry<String, Boolean> entry : selection.entrySet()) {
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// String key = entry.getKey();
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// Boolean val = entry.getValue();
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// clone.selection.put(key, val);
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// }
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// return clone;
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// }
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@Override
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public void update(Observable observable, Object notification) { |
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// If a Feature is deleted, remove it from the selection Set.
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if (notification instanceof FeatureStoreNotification) { |
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FeatureStoreNotification storeNotif = (FeatureStoreNotification) notification; |
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if (FeatureStoreNotification.AFTER_DELETE
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.equalsIgnoreCase(storeNotif.getType())) { |
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this.deselect(storeNotif.getFeature().getReference());
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} |
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} |
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} |
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@Override
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public void saveToState(PersistentState state) throws PersistenceException { |
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state.set("store", featureStore);
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} |
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@Override
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public void loadFromState(PersistentState state) throws PersistenceException { |
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featureStore = (DefaultFeatureStore) state.get("store");
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if(selection != null) { |
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this.selection.clear();
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} else {
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this.selection = this.featureStore.getManager().createLargeSet(); |
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} |
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Iterator it = state.getIterator("selected"); |
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while (it!=null && it.hasNext()) { |
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FeatureReference ref = (FeatureReference) it.next(); |
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this.select(ref);
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} |
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/*
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* If we do not do this, feature store will not listen
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* to changes in selection after instantiating a
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* persisted selection. For non-persisted instances,
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* this line corresponds to the line found in method:
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* getFeatureSelection() in DefaultFeatureStore.
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* This is not dangerous because "addObserver" only adds
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* if they were not already added, so future invocations
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* with same instances will have no effect.
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*/
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this.addObserver((DefaultFeatureStore) featureStore);
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} |
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protected void clearFeatureReferences() { |
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if (this.selection == null) { |
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return;
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} |
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this.selection.clear();
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} |
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public List<FeatureType> getFeatureTypes() { |
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try {
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return featureStore.getFeatureTypes();
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} catch (Exception e) { |
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throw new RuntimeException(e); |
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} |
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} |
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public static void registerPersistent() { |
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DynStruct definition = ToolsLocator.getPersistenceManager().addDefinition( |
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DefaultFeatureReferenceSelection.class, |
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DYNCLASS_PERSISTENT_NAME, |
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"LargeFeatureReferenceSelection Persistent definition",
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null,
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null
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); |
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definition.addDynFieldObject("store").setClassOfValue(FeatureStore.class).setMandatory(true); |
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// definition.addDynFieldLong("totalSize").setMandatory(true);
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definition.addDynFieldList("selected").setClassOfItems(FeatureReference.class).setMandatory(false); |
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} |
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} |