svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.db / org.gvsig.fmap.dal.db.jdbc / src / main / java / org / gvsig / fmap / dal / store / jdbc2 / spi / JDBCResourcesStorage.java @ 44297
History | View | Annotate | Download (10.5 KB)
1 | 44297 | jjdelcerro | package org.gvsig.fmap.dal.store.jdbc2.spi; |
---|---|---|---|
2 | |||
3 | import java.io.ByteArrayInputStream; |
||
4 | import java.io.ByteArrayOutputStream; |
||
5 | import java.io.IOException; |
||
6 | import java.io.InputStream; |
||
7 | import java.io.OutputStream; |
||
8 | import java.net.URL; |
||
9 | import java.util.ArrayList; |
||
10 | import java.util.List; |
||
11 | import org.apache.commons.io.IOUtils; |
||
12 | import org.apache.commons.lang3.StringUtils; |
||
13 | import org.gvsig.expressionevaluator.ExpressionBuilder; |
||
14 | import org.gvsig.expressionevaluator.ExpressionUtils; |
||
15 | import org.gvsig.fmap.dal.DALLocator; |
||
16 | import org.gvsig.fmap.dal.DataManager; |
||
17 | import static org.gvsig.fmap.dal.DataManager.RESOURCES_FIELD_NAME; |
||
18 | import static org.gvsig.fmap.dal.DataManager.RESOURCES_FIELD_RESOURCE; |
||
19 | import static org.gvsig.fmap.dal.DataManager.RESOURCES_TABLE_NAME; |
||
20 | import org.gvsig.fmap.dal.feature.EditableFeature; |
||
21 | import org.gvsig.fmap.dal.feature.Feature; |
||
22 | import org.gvsig.fmap.dal.feature.FeatureStore; |
||
23 | import org.gvsig.fmap.dal.store.jdbc.JDBCStoreParameters; |
||
24 | import org.gvsig.tools.dispose.DisposeUtils; |
||
25 | import org.gvsig.tools.resourcesstorage.AbstractResourcesStorage; |
||
26 | import org.gvsig.tools.resourcesstorage.ResourcesStorage; |
||
27 | import org.slf4j.Logger; |
||
28 | import org.slf4j.LoggerFactory; |
||
29 | |||
30 | /**
|
||
31 | *
|
||
32 | * @author jjdelcerro
|
||
33 | */
|
||
34 | @SuppressWarnings("UseSpecificCatch") |
||
35 | public class JDBCResourcesStorage extends AbstractResourcesStorage { |
||
36 | |||
37 | private static final Logger LOGGER = LoggerFactory.getLogger(JDBCResourcesStorage.class); |
||
38 | |||
39 | private static class DataBaseResource implements Resource { |
||
40 | |||
41 | private class ResourceInputStream extends InputStream { |
||
42 | |||
43 | @Override
|
||
44 | public int read() throws IOException { |
||
45 | return in.read();
|
||
46 | } |
||
47 | |||
48 | @Override
|
||
49 | public void close() throws IOException { |
||
50 | DataBaseResource.this.close(); |
||
51 | } |
||
52 | } |
||
53 | |||
54 | private class ResourceOutputStream extends OutputStream { |
||
55 | |||
56 | @Override
|
||
57 | public void write(int b) throws IOException { |
||
58 | out.write(b); |
||
59 | } |
||
60 | |||
61 | @Override
|
||
62 | public void flush() throws IOException { |
||
63 | out.flush(); |
||
64 | } |
||
65 | |||
66 | @Override
|
||
67 | public void close() throws IOException { |
||
68 | DataBaseResource.this.close(); |
||
69 | } |
||
70 | } |
||
71 | |||
72 | private final JDBCStoreParameters storeParameters; |
||
73 | private final String tableName; |
||
74 | private final String name; |
||
75 | |||
76 | private ByteArrayInputStream in; |
||
77 | private ByteArrayOutputStream out; |
||
78 | |||
79 | public DataBaseResource(JDBCStoreParameters storeParameters, String tableName, String name) { |
||
80 | this.storeParameters = storeParameters;
|
||
81 | this.tableName = tableName;
|
||
82 | this.name = name;
|
||
83 | } |
||
84 | |||
85 | @Override
|
||
86 | public boolean isReadOnly() { |
||
87 | return false; |
||
88 | } |
||
89 | @Override
|
||
90 | public URL getURL() { |
||
91 | try {
|
||
92 | String url = this.storeParameters.getUrl(); |
||
93 | return new URL(url + "&tableName=" + this.tableName + "&resourceName=" + this.name); |
||
94 | } catch (Throwable ex) { |
||
95 | return null; |
||
96 | } |
||
97 | } |
||
98 | |||
99 | @Override
|
||
100 | public boolean exists() { |
||
101 | FeatureStore store = null;
|
||
102 | try {
|
||
103 | DataManager dataManager = DALLocator.getDataManager(); |
||
104 | store = (FeatureStore) dataManager.openStore( |
||
105 | this.storeParameters.getDataStoreName(),
|
||
106 | this.storeParameters
|
||
107 | ); |
||
108 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
||
109 | String filter = builder.eq(
|
||
110 | builder.column(RESOURCES_FIELD_NAME), |
||
111 | builder.constant(this.tableName+"/"+this.name) |
||
112 | ).toString(); |
||
113 | Feature feature = store.findFirst(filter); |
||
114 | return feature!=null; |
||
115 | } catch (Throwable ex) { |
||
116 | LOGGER.warn("Can't access to the resoure '" + this.getURL() + "'.", ex); |
||
117 | } finally {
|
||
118 | DisposeUtils.disposeQuietly(store); |
||
119 | } |
||
120 | return false; |
||
121 | } |
||
122 | |||
123 | @Override
|
||
124 | public InputStream asInputStream() throws IOException { |
||
125 | if (this.in != null || this.out != null) { |
||
126 | throw new IllegalStateException("Resource is already open (" + this.getURL() + ")"); |
||
127 | } |
||
128 | FeatureStore store = null;
|
||
129 | try {
|
||
130 | DataManager dataManager = DALLocator.getDataManager(); |
||
131 | store = (FeatureStore) dataManager.openStore( |
||
132 | this.storeParameters.getDataStoreName(),
|
||
133 | this.storeParameters
|
||
134 | ); |
||
135 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
||
136 | String filter = builder.eq(
|
||
137 | builder.column(RESOURCES_FIELD_NAME), |
||
138 | builder.constant(this.tableName+"/"+this.name) |
||
139 | ).toString(); |
||
140 | Feature feature = store.findFirst(filter); |
||
141 | if (feature == null) { |
||
142 | return null; |
||
143 | } |
||
144 | byte[] resource = feature.getByteArray(RESOURCES_FIELD_RESOURCE); |
||
145 | this.in = new ByteArrayInputStream(resource); |
||
146 | return new ResourceInputStream(); |
||
147 | } catch (Throwable ex) { |
||
148 | LOGGER.warn("Can't access to the resoure '" + this.getURL() + "'.", ex); |
||
149 | } finally {
|
||
150 | DisposeUtils.disposeQuietly(store); |
||
151 | } |
||
152 | return null; |
||
153 | } |
||
154 | |||
155 | @Override
|
||
156 | public OutputStream asOutputStream() throws IOException { |
||
157 | if (this.in != null || this.out != null) { |
||
158 | throw new IllegalStateException("Resource is already open (" + this.getURL() + ")."); |
||
159 | } |
||
160 | this.out = new ByteArrayOutputStream(); |
||
161 | return new ResourceOutputStream(); |
||
162 | } |
||
163 | |||
164 | @Override
|
||
165 | public void close() { |
||
166 | if (this.in != null) { |
||
167 | IOUtils.closeQuietly(this.in);
|
||
168 | this.in = null; |
||
169 | } |
||
170 | if (this.out != null) { |
||
171 | FeatureStore store = null;
|
||
172 | try {
|
||
173 | DataManager dataManager = DALLocator.getDataManager(); |
||
174 | store = (FeatureStore) dataManager.openStore( |
||
175 | this.storeParameters.getDataStoreName(),
|
||
176 | this.storeParameters
|
||
177 | ); |
||
178 | store.edit(); |
||
179 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
||
180 | String filter = builder.eq(
|
||
181 | builder.column(RESOURCES_FIELD_NAME), |
||
182 | builder.constant(this.tableName+"/"+this.name) |
||
183 | ).toString(); |
||
184 | Feature feature = store.findFirst(filter); |
||
185 | EditableFeature efeature; |
||
186 | if (feature == null) { |
||
187 | efeature = store.createNewFeature(); |
||
188 | efeature.set(RESOURCES_FIELD_NAME, this.tableName+"/"+this.name); |
||
189 | efeature.set(RESOURCES_FIELD_RESOURCE, this.out.toByteArray());
|
||
190 | store.insert(efeature); |
||
191 | } else {
|
||
192 | efeature = feature.getEditable(); |
||
193 | efeature.set(RESOURCES_FIELD_RESOURCE, this.out.toByteArray());
|
||
194 | store.update(efeature); |
||
195 | } |
||
196 | store.finishEditing(); |
||
197 | |||
198 | } catch (Throwable ex) { |
||
199 | LOGGER.warn("Can't write the resoure '" + this.getURL() + "'.", ex); |
||
200 | } finally {
|
||
201 | DisposeUtils.disposeQuietly(store); |
||
202 | } |
||
203 | } |
||
204 | } |
||
205 | } |
||
206 | |||
207 | private final JDBCStoreParameters resourcesStoreParameters; |
||
208 | private final String tableName; |
||
209 | |||
210 | public JDBCResourcesStorage(JDBCStoreParameters resourcesStoreParameters, String tableName) { |
||
211 | if( StringUtils.equals(RESOURCES_TABLE_NAME, tableName) ) {
|
||
212 | // No podemos buscar recursos de la tabla de recursos, ya que si no
|
||
213 | // al abrise la tabla de recursos entraria en bucle.
|
||
214 | this.resourcesStoreParameters = null; |
||
215 | } else {
|
||
216 | this.resourcesStoreParameters = resourcesStoreParameters;
|
||
217 | } |
||
218 | this.tableName = tableName;
|
||
219 | } |
||
220 | |||
221 | @Override
|
||
222 | public boolean isEmpty() { |
||
223 | return this.resourcesStoreParameters == null; |
||
224 | } |
||
225 | |||
226 | @Override
|
||
227 | public Resource getResource(String name) { |
||
228 | if (this.resourcesStoreParameters == null) { |
||
229 | return null; |
||
230 | } |
||
231 | return new DataBaseResource( |
||
232 | this.resourcesStoreParameters,
|
||
233 | this.tableName,
|
||
234 | name |
||
235 | ); |
||
236 | } |
||
237 | |||
238 | @Override
|
||
239 | public List<Resource> getResources(String name) { |
||
240 | if (this.resourcesStoreParameters == null) { |
||
241 | return null; |
||
242 | } |
||
243 | FeatureStore store = null;
|
||
244 | try {
|
||
245 | DataManager dataManager = DALLocator.getDataManager(); |
||
246 | store = (FeatureStore) dataManager.openStore( |
||
247 | this.resourcesStoreParameters.getDataStoreName(),
|
||
248 | this.resourcesStoreParameters
|
||
249 | ); |
||
250 | ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
||
251 | List<ResourcesStorage.Resource> ress = new ArrayList<>(); |
||
252 | int n = 0; |
||
253 | while (true) { |
||
254 | String multiresourceName;
|
||
255 | if (n == 0) { |
||
256 | multiresourceName = name; |
||
257 | } else {
|
||
258 | multiresourceName = String.valueOf(n) + "." + name; |
||
259 | } |
||
260 | String filter = builder.eq(
|
||
261 | builder.column(RESOURCES_FIELD_NAME), |
||
262 | builder.constant(multiresourceName) |
||
263 | ).toString(); |
||
264 | Feature feature = store.findFirst(filter); |
||
265 | if( feature==null ) { |
||
266 | break;
|
||
267 | } |
||
268 | ress.add(new DataBaseResource(
|
||
269 | this.resourcesStoreParameters,
|
||
270 | this.tableName,
|
||
271 | multiresourceName |
||
272 | ) |
||
273 | ); |
||
274 | n++; |
||
275 | } |
||
276 | if (ress.isEmpty()) {
|
||
277 | return null; |
||
278 | } |
||
279 | return ress;
|
||
280 | } catch (Throwable ex) { |
||
281 | LOGGER.warn("Can't get resources for '" + this.resourcesStoreParameters.getUrl()+"&resourceName="+name + "'.", ex); |
||
282 | return null; |
||
283 | |||
284 | } finally {
|
||
285 | DisposeUtils.disposeQuietly(store); |
||
286 | } |
||
287 | |||
288 | } |
||
289 | |||
290 | } |