root / trunk / libraries / libDataSourceDBBaseDrivers / src / org / gvsig / data / datastores / vectorial / db / jdbc / AbstractJDBCDataFeatureCollectionWithFeatureID.java @ 19975
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package org.gvsig.data.datastores.vectorial.db.jdbc; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Comparator; |
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import java.util.ConcurrentModificationException; |
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import java.util.Iterator; |
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import java.util.TreeSet; |
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import org.gvsig.data.exception.ReadException; |
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import org.gvsig.data.vectorial.IFeature; |
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import org.gvsig.data.vectorial.IFeatureCollection; |
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import org.gvsig.data.vectorial.IFeatureID; |
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import org.gvsig.data.vectorial.IFeatureType; |
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import org.gvsig.data.vectorial.expansionadapter.FeatureManager; |
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import org.gvsig.data.vectorial.filter.FeatureFilterParser; |
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import org.gvsig.data.vectorial.order.FeatureComparator; |
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public abstract class AbstractJDBCDataFeatureCollectionWithFeatureID extends |
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AbstractJDBCDataFeatureCollection { |
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protected JDBCStore store;
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protected Collection featureIDs; |
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protected IFeatureType featureType;
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protected abstract IFeatureCollection newBaseDataFeatureCollection(JDBCStore store,IFeatureType featureType,String filter,String order); |
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protected void init(FeatureManager fm, JDBCStore store, IFeatureType type, String filter, String order) throws ReadException { |
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this.store=store;
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this.featureType= type;
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FeatureFilterParser parser = null;
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IFeature feature; |
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Collection tmpFeatures;
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if (order == null){ |
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if (filter == null){ |
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tmpFeatures = new ArrayList(); // Si queremos optimizar deberiamos inicializar |
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// el tama?o
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} else {
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tmpFeatures = new ArrayList(); |
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} |
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} else {
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Comparator comparator = new FeatureComparator(this.featureType,order); |
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tmpFeatures = new TreeSet(comparator); |
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} |
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if (filter != null && filter != ""){ |
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parser = new FeatureFilterParser(filter,featureType);
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} |
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for (int i=0;i<fm.getNum();i++){ |
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feature = fm.getFeature(i); |
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if (fm.isDeleted(feature)){
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continue;
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} |
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if (parser == null || parser.match(feature)){ |
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if (order != null){ |
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tmpFeatures.add(feature); |
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} else {
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tmpFeatures.add(feature.getID()); |
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} |
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} |
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} |
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IFeatureCollection coll = this.newBaseDataFeatureCollection(store, featureType, filter, order);
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Iterator iter = coll.iterator();
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while (iter.hasNext()){
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feature =(IFeature)iter.next(); |
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if (!fm.isDeleted(feature)){
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if (order != null){ |
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tmpFeatures.add(feature); |
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} else {
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tmpFeatures.add(feature.getID()); |
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} |
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} |
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} |
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if (order != null){ |
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featureIDs = new ArrayList(); |
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iter = tmpFeatures.iterator(); |
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while (iter.hasNext()){
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featureIDs.add(((IFeature)iter.next()).getID()); |
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} |
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} else {
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featureIDs = tmpFeatures; |
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} |
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} |
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public int size() { |
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return featureIDs.size();
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} |
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public Iterator iterator() { |
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FIDIterator dbfIter=new FIDIterator(featureIDs.iterator());
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return dbfIter;
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} |
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public class FIDIterator implements Iterator{ |
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private Iterator iter; |
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public FIDIterator(Iterator iter){ |
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this.iter=iter;
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} |
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public boolean hasNext() { |
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checkModified(); |
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return iter.hasNext();
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} |
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protected void checkModified(){ |
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if (modified)
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throw new ConcurrentModificationException("FeatureCollection modified"); |
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} |
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public Object next() { |
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checkModified(); |
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IFeatureID fid= (IFeatureID)iter.next(); |
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IFeature feature; |
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try {
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feature = fid.getFeature(featureType); |
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} catch (ReadException e) {
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throw new RuntimeException(e); |
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} |
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return feature;
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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 void dispose(){ |
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this.store.deleteObserver(this); |
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this.store = null; |
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this.featureType = null; |
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} |
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} |