svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libDielmoOpenLiDAR / src / org / gvsig / fmap / dal / store / lidar / LiDARSetProvider.java @ 29289
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package org.gvsig.fmap.dal.store.lidar; |
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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.exception.ReadRuntimeException; |
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import org.gvsig.fmap.dal.feature.DisposableIterator; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.dal.feature.spi.FeatureProvider; |
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import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
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import org.gvsig.tools.evaluator.Evaluator; |
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import org.gvsig.tools.evaluator.EvaluatorData; |
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import org.gvsig.tools.evaluator.EvaluatorException; |
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public class LiDARSetProvider implements FeatureSetProvider { |
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private LiDARStoreProvider store;
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private FeatureQuery query;
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private FeatureType featureType;
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public LiDARSetProvider(LiDARStoreProvider liDARStoreProvider,
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FeatureQuery query, FeatureType featureType) throws DataException {
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this.store = liDARStoreProvider;
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this.query = query;
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this.featureType = featureType;
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} |
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public boolean canFilter() { |
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return false; |
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} |
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public boolean canIterateFromIndex() { |
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return true; |
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} |
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public boolean canOrder() { |
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return false; |
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} |
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public DisposableIterator fastIterator(long index) throws DataException { |
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return new FastLiDARIterator(this.store, this.featureType, |
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index); |
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} |
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public DisposableIterator fastIterator() throws DataException { |
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return this.fastIterator(0); |
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} |
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public long getSize() throws DataException { |
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return this.store.getFeatureCount(); |
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} |
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public boolean isEmpty() throws DataException { |
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return this.store.getFeatureCount() > 0; |
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} |
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public DisposableIterator iterator() throws DataException { |
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return this.iterator(0); |
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} |
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public DisposableIterator iterator(long index) throws DataException { |
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return new LiDARIteratorScale(this.store, this.query, |
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this.featureType,
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index); |
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} |
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private class LiDARIteratorScale implements DisposableIterator { |
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protected long curIndex; |
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protected LiDARStoreProvider store;
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protected FeatureType featureType;
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private long count; |
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private Evaluator filter;
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FeatureQuery query; |
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protected boolean nextChecked; |
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private FeatureProvider current;
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public LiDARIteratorScale(LiDARStoreProvider store, FeatureQuery query,FeatureType featureType,
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long index) throws DataException { |
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this.store = store;
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this.featureType = featureType;
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this.curIndex = index;
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this.count = this.store.getFeatureCount(); |
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this.query = query;
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this.filter = query.getFilter();
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nextChecked=false;
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} |
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public boolean hasNext() { |
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if (nextChecked) {
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return curIndex < count;
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} |
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try {
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doNext(); |
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} catch( DataException e) {
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NullPointerException ex = new NullPointerException(); |
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ex.initCause(e); |
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throw ex;
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} |
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return curIndex < count;
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} |
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protected void doNext() throws DataException { |
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nextChecked = true;
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FeatureProvider featureData; |
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Feature feature; |
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long i=this.curIndex; |
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while (i<count) {
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featureData=this.createFeature();
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feature =store.getStoreServices().createFeature(featureData); |
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if (this.filter==null) { |
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this.current = featureData;
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return;
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} else{
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try {
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if(((Boolean) this.filter.evaluate((EvaluatorData)feature)).booleanValue()){ |
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this.current = featureData;
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return;
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} |
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} catch (EvaluatorException e) {
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} |
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} |
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i++; // este indice debe indicar el salto de puntos para implemetar la estrategia
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} |
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this.current = null; |
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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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try{
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FeatureProvider data = this.createFeature();
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curIndex++; |
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return data;
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} catch (DataException e){
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throw new ReadRuntimeException(this.store.getName(), e); |
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} |
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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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protected FeatureProvider createFeature() throws DataException { |
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return this.store.getFeatureDataByIndex(curIndex, featureType); |
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} |
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public void dispose() { |
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// TODO Auto-generated method stub
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} |
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} |
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private class LiDARIterator implements DisposableIterator { |
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protected long curIndex; |
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protected LiDARStoreProvider store;
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protected FeatureType featureType;
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private long count; |
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public LiDARIterator(LiDARStoreProvider store, FeatureType featureType,
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long index) throws DataException { |
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this.store = store;
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this.featureType = featureType;
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this.curIndex = index;
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this.count = this.store.getFeatureCount(); |
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} |
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public boolean hasNext() { |
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return curIndex < count;
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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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try{
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FeatureProvider data = this.createFeature();
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curIndex++; |
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return data;
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} catch (DataException e){
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throw new ReadRuntimeException(this.store.getName(), e); |
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} |
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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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protected FeatureProvider createFeature() throws DataException { |
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return this.store.getFeatureDataByIndex(curIndex, featureType); |
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} |
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public void dispose() { |
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// TODO Auto-generated method stub
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} |
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} |
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private class FastLiDARIterator extends LiDARIterator { |
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public FastLiDARIterator(LiDARStoreProvider store,
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FeatureType featureType, long index) throws DataException { |
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super(store, featureType, index);
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this.curData = this.store.createFeatureData(featureType); |
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} |
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private FeatureProvider curData;
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protected FeatureProvider createFeature() throws DataException { |
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this.store.loadFeatureDataByIndex(curData, curIndex, featureType);
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return curData;
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} |
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} |
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public void dispose() { |
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// TODO Auto-generated method stub
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} |
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} |