root / trunk / libraries / libDataSourceDBBaseDrivers / src / org / gvsig / data / datastores / vectorial / driver / jdbc / h2 / H2FeatureCollectionEditing.java @ 19663
History | View | Annotate | Download (7.28 KB)
1 |
package org.gvsig.data.datastores.vectorial.driver.jdbc.h2; |
---|---|
2 |
|
3 |
import java.sql.Connection; |
4 |
import java.sql.ResultSet; |
5 |
import java.sql.Statement; |
6 |
import java.util.ArrayList; |
7 |
import java.util.Collection; |
8 |
import java.util.ConcurrentModificationException; |
9 |
import java.util.Iterator; |
10 |
import java.util.NoSuchElementException; |
11 |
|
12 |
import org.gvsig.data.ComplexObservable; |
13 |
import org.gvsig.data.datastores.vectorial.driver.jdbc.DBFeatureType; |
14 |
import org.gvsig.data.datastores.vectorial.driver.jdbc.exception.SQLException; |
15 |
import org.gvsig.data.exception.ReadException; |
16 |
import org.gvsig.data.vectorial.AbstractFeatureCollection; |
17 |
import org.gvsig.data.vectorial.IFeature; |
18 |
import org.gvsig.data.vectorial.IFeatureType; |
19 |
import org.gvsig.data.vectorial.expansionadapter.FeatureManager; |
20 |
import org.gvsig.exceptions.BaseException; |
21 |
|
22 |
public class H2FeatureCollectionEditing extends AbstractFeatureCollection { |
23 |
protected ComplexObservable observable = new ComplexObservable(); |
24 |
protected DBFeatureType featureType;
|
25 |
protected String totalFilter; |
26 |
protected H2Driver driver;
|
27 |
protected ResultSet rs; |
28 |
private int numReg=-1; |
29 |
private String sql; |
30 |
private String sqlCount; |
31 |
private String totalOrder; |
32 |
private Connection connection; |
33 |
private FeatureManager featureManager;
|
34 |
// private FeatureFilterParser parser;
|
35 |
|
36 |
|
37 |
public H2FeatureCollectionEditing(FeatureManager fm,H2Driver driver,IFeatureType type) {
|
38 |
this.featureManager=fm;
|
39 |
this.driver=driver;
|
40 |
this.featureType=(DBFeatureType)type;
|
41 |
|
42 |
this.totalFilter =driver.getBaseWhereClause();
|
43 |
this.totalOrder = driver.getBaseOrder();
|
44 |
|
45 |
this.sql = this.driver.getSqlSelectPart(); |
46 |
this.sqlCount = "Select count(" + type.getFieldId() +") From "+ this.driver.getParametersH2().tableID(); |
47 |
if (!isStringEmpty(this.totalFilter)){ |
48 |
this.sql= this.sql + " Where " + this.totalFilter; |
49 |
this.sqlCount= this.sqlCount + " Where " + this.totalFilter; |
50 |
} |
51 |
if (!isStringEmpty(this.totalOrder)){ |
52 |
this.sql= this.sql + " Order by " + this.totalOrder; |
53 |
} |
54 |
|
55 |
// if (this.filter!=null)
|
56 |
// parser = new FeatureFilterParser(filter,this.featureType);
|
57 |
|
58 |
} |
59 |
|
60 |
private ResultSet getNewResulset(String aSql) throws ReadException{ |
61 |
this.driver.open();
|
62 |
|
63 |
this.connection = this.driver.getConnection(); |
64 |
|
65 |
try {
|
66 |
Statement st = connection.createStatement(ResultSet.TYPE_FORWARD_ONLY,ResultSet.CONCUR_READ_ONLY); |
67 |
return rs = st.executeQuery(aSql);
|
68 |
|
69 |
} catch (java.sql.SQLException e) {
|
70 |
throw new SQLException(aSql,"H2FeatureCollection",e); |
71 |
} |
72 |
|
73 |
} |
74 |
|
75 |
private boolean isStringEmpty(String s){ |
76 |
return s == null || s == ""; |
77 |
} |
78 |
|
79 |
|
80 |
protected void checkModified(){ |
81 |
if (modified)
|
82 |
throw new ConcurrentModificationException("FeatureCollection modified"); |
83 |
} |
84 |
|
85 |
public int size() { |
86 |
try {
|
87 |
if (this.numReg < 0){ |
88 |
ResultSet r=null; |
89 |
r = this.getNewResulset(this.sqlCount); |
90 |
try {
|
91 |
r.next(); |
92 |
numReg = r.getInt(1);
|
93 |
} catch (java.sql.SQLException e) {
|
94 |
throw new ReadException("H2FeatureCollection.size",e); |
95 |
} finally{
|
96 |
try {
|
97 |
r.close(); |
98 |
} catch (java.sql.SQLException e) {
|
99 |
throw new ReadException("H2FeatureCollection.size",e); |
100 |
} |
101 |
} |
102 |
numReg = numReg+featureManager.getNum(); |
103 |
} |
104 |
return numReg;
|
105 |
} catch (BaseException e){
|
106 |
throw new RuntimeException(e); |
107 |
} |
108 |
|
109 |
} |
110 |
|
111 |
|
112 |
public boolean isEmpty() { |
113 |
return (size()==0); |
114 |
} |
115 |
|
116 |
public boolean contains(Object o) { |
117 |
//FIXME: obtimizar
|
118 |
Iterator iterator= this.iterator(); |
119 |
while(iterator.hasNext()){
|
120 |
IFeature feature=(IFeature)iterator.next(); |
121 |
if (feature.getID().equals(((IFeature)o).getID())){
|
122 |
return true; |
123 |
} |
124 |
} |
125 |
return false; |
126 |
} |
127 |
|
128 |
public Iterator iterator() { |
129 |
try{
|
130 |
ResultSet r=null; |
131 |
r = this.getNewResulset(this.sql); |
132 |
H2Iterator dbfIter=new H2Iterator(this.driver,r,this.featureType); |
133 |
return dbfIter;
|
134 |
} catch (BaseException e){
|
135 |
throw new RuntimeException(e); |
136 |
} |
137 |
} |
138 |
|
139 |
public Object[] toArray() { |
140 |
ArrayList features= new ArrayList(); |
141 |
Iterator iterator= this.iterator(); |
142 |
while(iterator.hasNext()){
|
143 |
IFeature feature=(IFeature)iterator.next(); |
144 |
features.add(feature); |
145 |
} |
146 |
return features.toArray();
|
147 |
} |
148 |
|
149 |
public Object[] toArray(Object[] a) { |
150 |
ArrayList features= new ArrayList(); |
151 |
Iterator iterator= this.iterator(); |
152 |
while(iterator.hasNext()){
|
153 |
IFeature feature=(IFeature)iterator.next(); |
154 |
features.add(feature); |
155 |
} |
156 |
return features.toArray(a);
|
157 |
} |
158 |
|
159 |
public boolean add(Object o) { |
160 |
throw new UnsupportedOperationException(); |
161 |
} |
162 |
|
163 |
public boolean remove(Object o) { |
164 |
throw new UnsupportedOperationException(); |
165 |
} |
166 |
|
167 |
public boolean containsAll(Collection c) { |
168 |
Iterator iter = c.iterator();
|
169 |
while (iter.hasNext()){
|
170 |
if (!this.contains(iter.next())){ |
171 |
return false; |
172 |
} |
173 |
} |
174 |
return true; |
175 |
|
176 |
} |
177 |
|
178 |
public boolean addAll(Collection c) { |
179 |
throw new UnsupportedOperationException(); |
180 |
} |
181 |
|
182 |
public boolean removeAll(Collection c) { |
183 |
throw new UnsupportedOperationException(); |
184 |
} |
185 |
|
186 |
public boolean retainAll(Collection c) { |
187 |
throw new UnsupportedOperationException(); |
188 |
} |
189 |
|
190 |
public void clear() { |
191 |
throw new UnsupportedOperationException(); |
192 |
} |
193 |
|
194 |
|
195 |
protected class H2Iterator implements Iterator{ |
196 |
protected long position=0; |
197 |
private boolean nextChecked=false; |
198 |
private IFeature feature;
|
199 |
private ResultSet rs; |
200 |
private H2Driver driver;
|
201 |
private DBFeatureType featureType;
|
202 |
private boolean rsEOF=false; |
203 |
|
204 |
public H2Iterator(H2Driver driver, ResultSet rs, DBFeatureType featureType){ |
205 |
this.driver = driver;
|
206 |
this.rs = rs;
|
207 |
this.featureType = featureType;
|
208 |
position=0;
|
209 |
} |
210 |
|
211 |
protected void checkModified(){ |
212 |
if (modified)
|
213 |
throw new ConcurrentModificationException("FeatureCollection modified"); |
214 |
} |
215 |
|
216 |
public boolean hasNext(){ |
217 |
checkModified(); |
218 |
|
219 |
IFeature feature=null;
|
220 |
if (nextChecked){
|
221 |
return feature != null; |
222 |
} |
223 |
nextChecked=true;
|
224 |
while (true){ |
225 |
if (!rsEOF){
|
226 |
try {
|
227 |
if (rs.isLast()){
|
228 |
rs.close(); |
229 |
// rs.getStatement().close();
|
230 |
rsEOF=true;
|
231 |
continue;
|
232 |
} else {
|
233 |
feature=nextH2Feature(); |
234 |
} |
235 |
} catch (java.sql.SQLException e) {
|
236 |
throw new RuntimeException( |
237 |
new ReadException("H2FeatureCollection",e) |
238 |
); |
239 |
} |
240 |
|
241 |
}else {
|
242 |
if (position<featureManager.getNum()){
|
243 |
feature=featureManager.getFeature((int)position);
|
244 |
position++; |
245 |
}else{
|
246 |
this.feature = null; |
247 |
return false; |
248 |
} |
249 |
} |
250 |
|
251 |
|
252 |
|
253 |
if(featureManager.isDeleted(feature))
|
254 |
continue;
|
255 |
this.feature=feature;
|
256 |
return true; |
257 |
|
258 |
// if (filter == null) {
|
259 |
// this.feature=feature;
|
260 |
// return true;
|
261 |
//
|
262 |
// } else {
|
263 |
// try {
|
264 |
// if (parser.match(feature)){
|
265 |
// this.feature=feature;
|
266 |
// return true;
|
267 |
// }else{
|
268 |
// continue;
|
269 |
// }
|
270 |
// } catch (Exception e) {
|
271 |
// // TODO Auto-generated catch block
|
272 |
// e.printStackTrace();
|
273 |
// }
|
274 |
// }
|
275 |
} |
276 |
} |
277 |
|
278 |
public Object next() { |
279 |
// checkModified();
|
280 |
if (!nextChecked){
|
281 |
hasNext(); |
282 |
} |
283 |
if (feature == null) |
284 |
throw new NoSuchElementException(); |
285 |
nextChecked=false;
|
286 |
return feature;
|
287 |
} |
288 |
|
289 |
private IFeature nextH2Feature() {
|
290 |
IFeature feature=null;
|
291 |
try {
|
292 |
if(rs.next()){
|
293 |
feature=H2DriverUtils.createFeature(this.driver, this.rs, featureType); |
294 |
} |
295 |
} catch (java.sql.SQLException e) {
|
296 |
throw new RuntimeException( |
297 |
new ReadException("H2FeatureCollection",e) |
298 |
); |
299 |
} catch (ReadException e) {
|
300 |
throw new RuntimeException(e); |
301 |
} |
302 |
return feature;
|
303 |
} |
304 |
|
305 |
public void remove() { |
306 |
throw new UnsupportedOperationException(); |
307 |
} |
308 |
|
309 |
} |
310 |
|
311 |
} |