root / branches / v2_0_0_prep / libraries / libFMap_data / src / org / gvsig / fmap / data / feature / impl / featureSet / DefaultFeatureSet.java @ 23842
History | View | Annotate | Download (6.78 KB)
| 1 |
package org.gvsig.fmap.data.feature.impl.featureSet; |
|---|---|
| 2 |
|
| 3 |
import java.util.ArrayList; |
| 4 |
import java.util.Collections; |
| 5 |
import java.util.ConcurrentModificationException; |
| 6 |
import java.util.Iterator; |
| 7 |
import java.util.List; |
| 8 |
import java.util.NoSuchElementException; |
| 9 |
|
| 10 |
import org.gvsig.fmap.data.DataStore; |
| 11 |
import org.gvsig.fmap.data.exceptions.DataException; |
| 12 |
import org.gvsig.fmap.data.feature.Feature; |
| 13 |
import org.gvsig.fmap.data.feature.FeatureSet; |
| 14 |
import org.gvsig.fmap.data.feature.FeatureQuery; |
| 15 |
import org.gvsig.fmap.data.feature.FeatureStoreNotification; |
| 16 |
import org.gvsig.fmap.data.feature.FeatureType; |
| 17 |
import org.gvsig.fmap.data.feature.impl.DefaultFeatureStore; |
| 18 |
import org.gvsig.fmap.data.feature.spi.FeatureSetProvider; |
| 19 |
import org.gvsig.tools.exception.BaseException; |
| 20 |
import org.gvsig.tools.observer.Observable; |
| 21 |
import org.gvsig.tools.observer.Observer; |
| 22 |
import org.gvsig.tools.visitor.Visitor; |
| 23 |
|
| 24 |
public class DefaultFeatureSet implements FeatureSet, Observer { |
| 25 |
|
| 26 |
|
| 27 |
private static final int NO_CHECKED = -1; |
| 28 |
private static final int DEFAULT = 0; |
| 29 |
private static final int FILTERED = 1; |
| 30 |
private static final int ORDERED = 2; |
| 31 |
private static final int ORDERED_FILTERED = 3; |
| 32 |
private static final int EDITED = 4; |
| 33 |
private static final int EDITED_FILTERED = 5; |
| 34 |
private static final int ORDERD_EDITED = 6; |
| 35 |
private static final int ORDERED_EDITED_FILTER = 7; |
| 36 |
|
| 37 |
private boolean modified = false; |
| 38 |
DefaultFeatureStore store; |
| 39 |
private List featureTypes; |
| 40 |
FeatureQuery query; |
| 41 |
FeatureSetProvider provider; |
| 42 |
private long size = -1; |
| 43 |
private int iteratorMode = NO_CHECKED; |
| 44 |
List orderedData = null; |
| 45 |
|
| 46 |
|
| 47 |
public DefaultFeatureSet(DefaultFeatureStore store, FeatureQuery query)
|
| 48 |
throws DataException {
|
| 49 |
this.store = store;
|
| 50 |
this.query = query;
|
| 51 |
this.featureTypes = new ArrayList(); |
| 52 |
this.featureTypes.add(this.query.getFeatureType()); |
| 53 |
this.provider = this.store.getProvider().createSet(query); |
| 54 |
} |
| 55 |
|
| 56 |
public FeatureType getDefaultFeatureType() {
|
| 57 |
return this.query.getFeatureType(); |
| 58 |
} |
| 59 |
|
| 60 |
public List getFeatureTypes() { |
| 61 |
return Collections.unmodifiableList(this.featureTypes); |
| 62 |
} |
| 63 |
|
| 64 |
public long getSize() throws DataException { |
| 65 |
if (size < 0) { |
| 66 |
size = calculateSize(); |
| 67 |
} |
| 68 |
return size;
|
| 69 |
} |
| 70 |
|
| 71 |
private long calculateSize() throws DataException { |
| 72 |
int mode = this.getIteratorMode(); |
| 73 |
if ((mode & FILTERED) == FILTERED) {
|
| 74 |
long mySize =0; |
| 75 |
Iterator iter = this.fastIterator(); |
| 76 |
try{
|
| 77 |
while (true) { |
| 78 |
iter.next(); |
| 79 |
mySize++; |
| 80 |
} |
| 81 |
} catch (NoSuchElementException e){ |
| 82 |
return mySize;
|
| 83 |
} |
| 84 |
} else if ((mode & EDITED) == EDITED) { |
| 85 |
return provider.getSize()
|
| 86 |
+ store.getFeatureManager().getDeltaSize(); |
| 87 |
} |
| 88 |
return provider.getSize();
|
| 89 |
} |
| 90 |
|
| 91 |
public void dispose() { |
| 92 |
|
| 93 |
} |
| 94 |
|
| 95 |
public boolean isFromStore(DataStore store) { |
| 96 |
return this.store.equals(store); |
| 97 |
} |
| 98 |
|
| 99 |
public void update(Observable obsevable, Object notification) { |
| 100 |
if (modified) {
|
| 101 |
return;
|
| 102 |
} |
| 103 |
String type = ((FeatureStoreNotification) notification).getType();
|
| 104 |
if (type.equalsIgnoreCase(FeatureStoreNotification.AFTER_INSERT)
|
| 105 |
|| type.equalsIgnoreCase(FeatureStoreNotification.AFTER_DELETE) |
| 106 |
|| type |
| 107 |
.equalsIgnoreCase(FeatureStoreNotification.RESOURCE_CHANGED)) {
|
| 108 |
modified = true;
|
| 109 |
} |
| 110 |
} |
| 111 |
|
| 112 |
/*
|
| 113 |
* (non-Javadoc)
|
| 114 |
*
|
| 115 |
* @see
|
| 116 |
* org.gvsig.fmap.data.feature.visitor.FeaturesVisitable#accept(org.gvsig
|
| 117 |
* .fmap.data.feature.visitor.FeaturesVisitor)
|
| 118 |
*/
|
| 119 |
public void accept(Visitor visitor) throws BaseException { |
| 120 |
Iterator iterator = iterator();
|
| 121 |
|
| 122 |
while (iterator.hasNext()) {
|
| 123 |
Feature feature = (Feature) iterator.next(); |
| 124 |
visitor.visit(feature); |
| 125 |
} |
| 126 |
} |
| 127 |
|
| 128 |
protected void checkModified() { |
| 129 |
if (modified) {
|
| 130 |
throw new ConcurrentModificationException( |
| 131 |
"FeatureCollection modified");
|
| 132 |
} |
| 133 |
} |
| 134 |
|
| 135 |
public boolean isEmpty() throws DataException { |
| 136 |
checkModified(); |
| 137 |
if (this.store.isEditing()) { |
| 138 |
if (this.store.getFeatureManager().hasNews()) { |
| 139 |
return false; |
| 140 |
} |
| 141 |
if (this.provider.isEmpty()) { |
| 142 |
return true; |
| 143 |
} |
| 144 |
return this.provider.getSize() |
| 145 |
+ this.store.getFeatureManager().getDeltaSize() == 0; |
| 146 |
} |
| 147 |
return this.provider.isEmpty(); |
| 148 |
} |
| 149 |
public Iterator fastIterator() { |
| 150 |
return this.fastIterator(0); |
| 151 |
} |
| 152 |
|
| 153 |
public Iterator fastIterator(long index) { |
| 154 |
if (index < 0) { |
| 155 |
throw new IndexOutOfBoundsException("The index (" + index |
| 156 |
+ ") is less than 0");
|
| 157 |
} |
| 158 |
int mode = this.getIteratorMode(); |
| 159 |
|
| 160 |
switch (mode) {
|
| 161 |
case DEFAULT:
|
| 162 |
return new FastDefaultIterator(this, index); |
| 163 |
|
| 164 |
case FILTERED:
|
| 165 |
return new FastFilteredIterator(this, index); |
| 166 |
|
| 167 |
case ORDERED_FILTERED:
|
| 168 |
return new FastOrderedIterator(this, new FastDefaultIterator(this, |
| 169 |
0),
|
| 170 |
index); |
| 171 |
|
| 172 |
case EDITED:
|
| 173 |
return new FastEditedIterator(this, index); |
| 174 |
|
| 175 |
case EDITED_FILTERED:
|
| 176 |
return new FastEditedFilteredIterator(this, index); |
| 177 |
|
| 178 |
case ORDERD_EDITED:
|
| 179 |
return new FastOrderedIterator(this, |
| 180 |
new FastEditedIterator(this, 0), index); |
| 181 |
|
| 182 |
case ORDERED_EDITED_FILTER:
|
| 183 |
return new FastOrderedIterator(this, |
| 184 |
new FastEditedFilteredIterator(this, 0), index); |
| 185 |
|
| 186 |
default:
|
| 187 |
throw new IllegalArgumentException(); |
| 188 |
} |
| 189 |
} |
| 190 |
|
| 191 |
public Iterator iterator() { |
| 192 |
return this.iterator(0); |
| 193 |
} |
| 194 |
|
| 195 |
public Iterator iterator(long index) { |
| 196 |
if (index < 0) { |
| 197 |
throw new IndexOutOfBoundsException("The index (" + index |
| 198 |
+ ") is less than 0");
|
| 199 |
} |
| 200 |
int mode = this.getIteratorMode(); |
| 201 |
|
| 202 |
switch (mode) {
|
| 203 |
case DEFAULT:
|
| 204 |
return new DefaultIterator(this, index); |
| 205 |
|
| 206 |
case FILTERED:
|
| 207 |
return new FilteredIterator(this, index); |
| 208 |
|
| 209 |
case ORDERED_FILTERED:
|
| 210 |
return new OrderedIterator(this, new DefaultIterator(this, 0), |
| 211 |
index); |
| 212 |
|
| 213 |
case EDITED:
|
| 214 |
return new EditedIterator(this, index); |
| 215 |
|
| 216 |
case EDITED_FILTERED:
|
| 217 |
return new EditedFilteredIterator(this, index); |
| 218 |
|
| 219 |
case ORDERD_EDITED:
|
| 220 |
return new OrderedIterator(this, |
| 221 |
new EditedIterator(this, 0), index); |
| 222 |
|
| 223 |
case ORDERED_EDITED_FILTER:
|
| 224 |
return new OrderedIterator(this, |
| 225 |
new EditedFilteredIterator(this, 0), index); |
| 226 |
|
| 227 |
default:
|
| 228 |
throw new IllegalArgumentException(); |
| 229 |
} |
| 230 |
|
| 231 |
} |
| 232 |
|
| 233 |
private int getIteratorMode() { |
| 234 |
|
| 235 |
if (this.iteratorMode != NO_CHECKED) { |
| 236 |
return this.iteratorMode; |
| 237 |
} |
| 238 |
|
| 239 |
if (store.isEditing() && store.getFeatureManager().hasChanges()) {
|
| 240 |
if (this.query.hasOrder()) { // En edicion siempre ordeno yo. |
| 241 |
if (this.query.hasFilter()) { |
| 242 |
return ORDERED_EDITED_FILTER;
|
| 243 |
} else {
|
| 244 |
return ORDERD_EDITED;
|
| 245 |
} |
| 246 |
} else {
|
| 247 |
if (this.query.hasFilter()) { |
| 248 |
return EDITED_FILTERED;
|
| 249 |
} else {
|
| 250 |
return EDITED;
|
| 251 |
} |
| 252 |
} |
| 253 |
} else {
|
| 254 |
boolean useMyFilter = this.query.hasFilter(); |
| 255 |
boolean useMyOrder = this.query.hasOrder(); |
| 256 |
if (this.provider.canOrder()) { |
| 257 |
useMyOrder = false;
|
| 258 |
} |
| 259 |
if (this.provider.canFilter()) { |
| 260 |
useMyFilter = false;
|
| 261 |
} |
| 262 |
|
| 263 |
if (useMyOrder) {
|
| 264 |
if (useMyFilter) {
|
| 265 |
return ORDERED_FILTERED;// ORDERED_FILTERED; |
| 266 |
} else {
|
| 267 |
return ORDERED;// ORDERED; |
| 268 |
} |
| 269 |
} else {
|
| 270 |
if (useMyFilter) {
|
| 271 |
return FILTERED;// FILTERED; |
| 272 |
} else {
|
| 273 |
return DEFAULT;// DEFAULT; |
| 274 |
} |
| 275 |
} |
| 276 |
} |
| 277 |
|
| 278 |
} |
| 279 |
|
| 280 |
} |