svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libDielmoOpenLiDAR / src / org / gvsig / fmap / dal / store / lidar / LiDARSetProvider.java @ 26737
History | View | Annotate | Download (5.35 KB)
| 1 |
package org.gvsig.fmap.dal.store.lidar; |
|---|---|
| 2 |
|
| 3 |
import java.util.Iterator; |
| 4 |
import java.util.NoSuchElementException; |
| 5 |
|
| 6 |
import org.gvsig.fmap.dal.exception.DataEvaluatorException; |
| 7 |
import org.gvsig.fmap.dal.exception.DataException; |
| 8 |
import org.gvsig.fmap.dal.exception.ReadRuntimeException; |
| 9 |
import org.gvsig.fmap.dal.feature.Feature; |
| 10 |
import org.gvsig.fmap.dal.feature.FeatureQuery; |
| 11 |
import org.gvsig.fmap.dal.feature.FeatureType; |
| 12 |
import org.gvsig.fmap.dal.feature.impl.DefaultFeature; |
| 13 |
import org.gvsig.fmap.dal.feature.spi.FeatureData; |
| 14 |
import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
| 15 |
import org.gvsig.tools.evaluator.Evaluator; |
| 16 |
import org.gvsig.tools.evaluator.EvaluatorData; |
| 17 |
import org.gvsig.tools.evaluator.EvaluatorException; |
| 18 |
|
| 19 |
public class LiDARSetProvider implements FeatureSetProvider { |
| 20 |
|
| 21 |
private LiDARStoreProvider store;
|
| 22 |
private FeatureQuery query;
|
| 23 |
|
| 24 |
public LiDARSetProvider(LiDARStoreProvider liDARStoreProvider,
|
| 25 |
FeatureQuery query) {
|
| 26 |
this.store = liDARStoreProvider;
|
| 27 |
this.query = query;
|
| 28 |
} |
| 29 |
|
| 30 |
public boolean canFilter() { |
| 31 |
return false; |
| 32 |
} |
| 33 |
|
| 34 |
public boolean canIterateFromIndex() { |
| 35 |
return true; |
| 36 |
} |
| 37 |
|
| 38 |
public boolean canOrder() { |
| 39 |
return false; |
| 40 |
} |
| 41 |
|
| 42 |
public Iterator fastIterator(long index) throws DataException { |
| 43 |
return new FastLiDARIterator(this.store, this.query.getFeatureType(), |
| 44 |
index); |
| 45 |
} |
| 46 |
|
| 47 |
public Iterator fastIterator() throws DataException { |
| 48 |
return this.fastIterator(0); |
| 49 |
} |
| 50 |
|
| 51 |
public long getSize() throws DataException { |
| 52 |
return this.store.getFeatureCount(); |
| 53 |
} |
| 54 |
|
| 55 |
public boolean isEmpty() throws DataException { |
| 56 |
return this.store.getFeatureCount() > 0; |
| 57 |
} |
| 58 |
|
| 59 |
public Iterator iterator() throws DataException { |
| 60 |
return this.iterator(0); |
| 61 |
} |
| 62 |
|
| 63 |
public Iterator iterator(long index) throws DataException { |
| 64 |
return new LiDARIteratorScale(this.store, this.query, this.query.getFeatureType(), index); |
| 65 |
} |
| 66 |
|
| 67 |
|
| 68 |
private class LiDARIteratorScale implements Iterator { |
| 69 |
protected long curIndex; |
| 70 |
protected LiDARStoreProvider store;
|
| 71 |
protected FeatureType featureType;
|
| 72 |
private long count; |
| 73 |
private Evaluator filter;
|
| 74 |
FeatureQuery query; |
| 75 |
protected boolean nextChecked; |
| 76 |
private FeatureData current;
|
| 77 |
|
| 78 |
public LiDARIteratorScale(LiDARStoreProvider store, FeatureQuery query,FeatureType featureType,
|
| 79 |
long index) throws DataException { |
| 80 |
|
| 81 |
this.store = store;
|
| 82 |
this.featureType = featureType;
|
| 83 |
this.curIndex = index;
|
| 84 |
this.count = this.store.getFeatureCount(); |
| 85 |
this.query = query;
|
| 86 |
this.filter = query.getFilter();
|
| 87 |
nextChecked=false;
|
| 88 |
} |
| 89 |
|
| 90 |
public boolean hasNext() { |
| 91 |
|
| 92 |
if (nextChecked) {
|
| 93 |
return curIndex < count;
|
| 94 |
} |
| 95 |
try {
|
| 96 |
doNext(); |
| 97 |
} catch( DataException e) {
|
| 98 |
NullPointerException ex = new NullPointerException(); |
| 99 |
ex.initCause(e); |
| 100 |
throw ex;
|
| 101 |
} |
| 102 |
return curIndex < count;
|
| 103 |
} |
| 104 |
|
| 105 |
protected void doNext() throws DataException { |
| 106 |
nextChecked = true;
|
| 107 |
|
| 108 |
FeatureData featureData; |
| 109 |
Feature feature; |
| 110 |
long i=this.curIndex; |
| 111 |
while (i<count) {
|
| 112 |
featureData=this.createFeature();
|
| 113 |
feature =store.getStoreServices().createFeature(featureData); |
| 114 |
|
| 115 |
if (this.filter==null) { |
| 116 |
this.current = featureData;
|
| 117 |
return;
|
| 118 |
} else{
|
| 119 |
try {
|
| 120 |
if(((Boolean) this.filter.evaluate((EvaluatorData)feature)).booleanValue()){ |
| 121 |
this.current = featureData;
|
| 122 |
return;
|
| 123 |
} |
| 124 |
} catch (EvaluatorException e) {
|
| 125 |
// TODO Auto-generated catch block
|
| 126 |
e.printStackTrace(); |
| 127 |
} |
| 128 |
} |
| 129 |
i++; // este indice debe indicar el salto de puntos para implemetar la estrategia
|
| 130 |
} |
| 131 |
|
| 132 |
|
| 133 |
this.current = null; |
| 134 |
} |
| 135 |
|
| 136 |
|
| 137 |
public Object next() { |
| 138 |
if (!hasNext()){
|
| 139 |
throw new NoSuchElementException(); |
| 140 |
} |
| 141 |
try{
|
| 142 |
FeatureData data = this.createFeature();
|
| 143 |
curIndex++; |
| 144 |
return data;
|
| 145 |
} catch (DataException e){
|
| 146 |
throw new ReadRuntimeException(this.store.getName(), e); |
| 147 |
} |
| 148 |
} |
| 149 |
|
| 150 |
public void remove() { |
| 151 |
throw new UnsupportedOperationException(); |
| 152 |
|
| 153 |
} |
| 154 |
|
| 155 |
protected FeatureData createFeature() throws DataException { |
| 156 |
return this.store.getFeatureDataByIndex(curIndex, featureType); |
| 157 |
} |
| 158 |
|
| 159 |
} |
| 160 |
|
| 161 |
|
| 162 |
|
| 163 |
private class LiDARIterator implements Iterator { |
| 164 |
protected long curIndex; |
| 165 |
protected LiDARStoreProvider store;
|
| 166 |
protected FeatureType featureType;
|
| 167 |
private long count; |
| 168 |
|
| 169 |
|
| 170 |
|
| 171 |
public LiDARIterator(LiDARStoreProvider store, FeatureType featureType,
|
| 172 |
long index) throws DataException { |
| 173 |
|
| 174 |
this.store = store;
|
| 175 |
this.featureType = featureType;
|
| 176 |
this.curIndex = index;
|
| 177 |
this.count = this.store.getFeatureCount(); |
| 178 |
} |
| 179 |
|
| 180 |
public boolean hasNext() { |
| 181 |
return curIndex < count;
|
| 182 |
} |
| 183 |
|
| 184 |
public Object next() { |
| 185 |
if (!hasNext()){
|
| 186 |
throw new NoSuchElementException(); |
| 187 |
} |
| 188 |
try{
|
| 189 |
FeatureData data = this.createFeature();
|
| 190 |
curIndex++; |
| 191 |
return data;
|
| 192 |
} catch (DataException e){
|
| 193 |
throw new ReadRuntimeException(this.store.getName(), e); |
| 194 |
} |
| 195 |
} |
| 196 |
|
| 197 |
public void remove() { |
| 198 |
throw new UnsupportedOperationException(); |
| 199 |
|
| 200 |
} |
| 201 |
|
| 202 |
protected FeatureData createFeature() throws DataException { |
| 203 |
return this.store.getFeatureDataByIndex(curIndex, featureType); |
| 204 |
} |
| 205 |
|
| 206 |
} |
| 207 |
|
| 208 |
private class FastLiDARIterator extends LiDARIterator { |
| 209 |
public FastLiDARIterator(LiDARStoreProvider store,
|
| 210 |
FeatureType featureType, long index) throws DataException { |
| 211 |
super(store, featureType, index);
|
| 212 |
this.curData = this.store.createFeatureData(featureType); |
| 213 |
} |
| 214 |
|
| 215 |
|
| 216 |
private FeatureData curData;
|
| 217 |
|
| 218 |
|
| 219 |
protected FeatureData createFeature() throws DataException { |
| 220 |
this.store.loadFeatureDataByIndex(curData, curIndex, featureType);
|
| 221 |
return curData;
|
| 222 |
} |
| 223 |
} |
| 224 |
|
| 225 |
} |