svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / layers / VectorialFileAdapter.java @ 20701
History | View | Annotate | Download (6.59 KB)
1 | 1100 | fjp | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
---|---|---|---|
2 | *
|
||
3 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
||
4 | *
|
||
5 | * This program is free software; you can redistribute it and/or
|
||
6 | * modify it under the terms of the GNU General Public License
|
||
7 | * as published by the Free Software Foundation; either version 2
|
||
8 | * of the License, or (at your option) any later version.
|
||
9 | *
|
||
10 | * This program is distributed in the hope that it will be useful,
|
||
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
13 | * GNU General Public License for more details.
|
||
14 | *
|
||
15 | * You should have received a copy of the GNU General Public License
|
||
16 | * along with this program; if not, write to the Free Software
|
||
17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
||
18 | *
|
||
19 | * For more information, contact:
|
||
20 | *
|
||
21 | * Generalitat Valenciana
|
||
22 | * Conselleria d'Infraestructures i Transport
|
||
23 | * Av. Blasco Ib??ez, 50
|
||
24 | * 46010 VALENCIA
|
||
25 | * SPAIN
|
||
26 | *
|
||
27 | * +34 963862235
|
||
28 | * gvsig@gva.es
|
||
29 | * www.gvsig.gva.es
|
||
30 | *
|
||
31 | * or
|
||
32 | *
|
||
33 | * IVER T.I. S.A
|
||
34 | * Salamanca 50
|
||
35 | * 46005 Valencia
|
||
36 | * Spain
|
||
37 | *
|
||
38 | * +34 963163400
|
||
39 | * dac@iver.es
|
||
40 | */
|
||
41 | 214 | fernando | package com.iver.cit.gvsig.fmap.layers; |
42 | |||
43 | 1828 | fernando | import java.io.File; |
44 | 442 | vcaballero | |
45 | 1828 | fernando | import com.hardcode.driverManager.DriverLoadException; |
46 | 10627 | caballero | import com.hardcode.gdbms.driver.exceptions.CloseDriverException; |
47 | import com.hardcode.gdbms.driver.exceptions.InitializeDriverException; |
||
48 | import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
||
49 | 408 | fernando | import com.hardcode.gdbms.engine.data.DataSource; |
50 | import com.hardcode.gdbms.engine.data.DataSourceFactory; |
||
51 | import com.hardcode.gdbms.engine.data.NoSuchTableException; |
||
52 | 1828 | fernando | import com.hardcode.gdbms.engine.data.driver.ObjectDriver; |
53 | 3248 | fjp | import com.hardcode.gdbms.engine.values.Value; |
54 | import com.iver.cit.gvsig.fmap.core.DefaultFeature; |
||
55 | import com.iver.cit.gvsig.fmap.core.IFeature; |
||
56 | 305 | fjp | import com.iver.cit.gvsig.fmap.core.IGeometry; |
57 | 504 | fernando | import com.iver.cit.gvsig.fmap.drivers.ExternalData; |
58 | 214 | fernando | import com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver; |
59 | 229 | vcaballero | |
60 | |||
61 | 214 | fernando | /**
|
62 | 229 | vcaballero | * Adapta un driver de fichero vectorial a la interfaz vectorial, manteniendo
|
63 | * adem?s el estado necesario por una capa vectorial de fichero (el nombre del
|
||
64 | * fichero)
|
||
65 | 214 | fernando | */
|
66 | 3601 | fjp | public class VectorialFileAdapter extends VectorialAdapter { |
67 | 504 | fernando | private boolean driverInitialized = false; |
68 | private File file; |
||
69 | 3959 | caballero | private SelectableDataSource ds;
|
70 | 546 | fernando | private String dataSourceName; |
71 | 3959 | caballero | |
72 | 1327 | fjp | /**
|
73 | * <code>reference_count</code> lleva un contador de referencias a este
|
||
74 | 3959 | caballero | * adaptador, de forma que si la cuenta de referencias no es cero, no
|
75 | 1327 | fjp | * abrimos otra vez el adaptador porque se supone que est? abierto.
|
76 | */
|
||
77 | private int reference_count = 0; |
||
78 | 229 | vcaballero | |
79 | 504 | fernando | /**
|
80 | * Crea un nuevo VectorialFileAdapter.
|
||
81 | *
|
||
82 | 1034 | vcaballero | * @param file Fichero.
|
83 | 504 | fernando | */
|
84 | public VectorialFileAdapter(File file) { |
||
85 | this.file = file;
|
||
86 | } |
||
87 | 214 | fernando | |
88 | 504 | fernando | /**
|
89 | 1034 | vcaballero | * Devuelve driver.
|
90 | 504 | fernando | *
|
91 | 1034 | vcaballero | * @return VectorialFileDriver.
|
92 | 504 | fernando | */
|
93 | 3936 | fjp | VectorialFileDriver getFileDriver() { |
94 | 504 | fernando | return (VectorialFileDriver) getDriver();
|
95 | } |
||
96 | 229 | vcaballero | |
97 | 504 | fernando | /**
|
98 | * incrementa el contador de las veces que se ha abierto el fichero.
|
||
99 | * Solamente cuando el contador est? a cero pide al driver que abra el
|
||
100 | * fichero
|
||
101 | 10627 | caballero | * @throws InitializeDriverException
|
102 | 504 | fernando | */
|
103 | 10627 | caballero | public synchronized void start() throws ReadDriverException, InitializeDriverException { |
104 | 1327 | fjp | if (reference_count == 0) |
105 | { |
||
106 | getFileDriver().open(file); |
||
107 | 3959 | caballero | |
108 | 1327 | fjp | if (!driverInitialized) {
|
109 | getFileDriver().initialize(); |
||
110 | driverInitialized = true;
|
||
111 | } |
||
112 | 14588 | vcaballero | getRecordset().start(); |
113 | 1327 | fjp | } |
114 | reference_count++; |
||
115 | 504 | fernando | } |
116 | 214 | fernando | |
117 | 504 | fernando | /**
|
118 | * decrementa el contador de n?mero de aperturas y cuando llega a cero pide
|
||
119 | * al driver que cierre el fichero
|
||
120 | */
|
||
121 | 10627 | caballero | public synchronized void stop() throws ReadDriverException { |
122 | 504 | fernando | try {
|
123 | 1327 | fjp | if (reference_count == 0) |
124 | { |
||
125 | getFileDriver().close(); |
||
126 | } |
||
127 | else
|
||
128 | if (reference_count < 0) |
||
129 | 3959 | caballero | throw new RuntimeException("Contador de referencias de driver =" |
130 | 1327 | fjp | + reference_count + ". Demasiados stop().");
|
131 | reference_count--; |
||
132 | 10627 | caballero | } catch (CloseDriverException e) {
|
133 | throw new ReadDriverException(getDriver().getName(),e); |
||
134 | 504 | fernando | } |
135 | } |
||
136 | 214 | fernando | |
137 | 504 | fernando | /**
|
138 | 4580 | azabala | * Is synchronized to allow thread safe access to features stored
|
139 | * in files.
|
||
140 | 10627 | caballero | *
|
141 | 504 | fernando | * @see com.iver.cit.gvsig.fmap.layers.ReadableVectorial#getShape(int)
|
142 | */
|
||
143 | 10627 | caballero | public synchronized IGeometry getShape(int index) throws ReadDriverException { |
144 | return getFileDriver().getShape(index);
|
||
145 | 504 | fernando | } |
146 | 214 | fernando | |
147 | 504 | fernando | /**
|
148 | * @see com.iver.cit.gvsig.fmap.layers.ReadableVectorial#getShapeType()
|
||
149 | */
|
||
150 | 10627 | caballero | public int getShapeType() throws ReadDriverException { |
151 | 504 | fernando | return getFileDriver().getShapeType();
|
152 | } |
||
153 | 408 | fernando | |
154 | 504 | fernando | /**
|
155 | 10627 | caballero | * @throws ReadDriverException
|
156 | 504 | fernando | * @see com.iver.cit.gvsig.fmap.layers.VectorialAdapter#getRecordset()
|
157 | */
|
||
158 | 10665 | caballero | public SelectableDataSource getRecordset() throws ReadDriverException { |
159 | String name =null; |
||
160 | 508 | fernando | try {
|
161 | 1034 | vcaballero | if (ds == null) { |
162 | VectorialFileDriver driver = (VectorialFileDriver) getDriver(); |
||
163 | 442 | vcaballero | |
164 | 1034 | vcaballero | if (driver instanceof ExternalData) { |
165 | ExternalData ed = (ExternalData) driver; |
||
166 | File dataFile = ed.getDataFile(file);
|
||
167 | String driverName = ed.getDataDriverName();
|
||
168 | 442 | vcaballero | |
169 | 10665 | caballero | name = LayerFactory.getDataSourceFactory().addFileDataSource(driverName, |
170 | 2217 | fernando | dataFile.getAbsolutePath()); |
171 | 14588 | vcaballero | ds = new SelectableDataSource(LayerFactory.getDataSourceFactory().createRandomDataSource(name, DataSourceFactory.AUTOMATIC_OPENING));
|
172 | 1828 | fernando | } else if (driver instanceof ObjectDriver) { |
173 | 10665 | caballero | name = LayerFactory.getDataSourceFactory().addDataSource((ObjectDriver)driver); |
174 | 14588 | vcaballero | ds = new SelectableDataSource(LayerFactory.getDataSourceFactory().createRandomDataSource(name, DataSourceFactory.AUTOMATIC_OPENING));
|
175 | 1034 | vcaballero | } else {
|
176 | return null; |
||
177 | } |
||
178 | 463 | fernando | } |
179 | 504 | fernando | } catch (NoSuchTableException e) {
|
180 | throw new RuntimeException( |
||
181 | "Error de implementaci?n, se ha a?adido una tabla y luego esa tabla no ha podido ser cargada");
|
||
182 | 10665 | caballero | } catch (DriverLoadException e) {
|
183 | throw new ReadDriverException(name,e); |
||
184 | 504 | fernando | } |
185 | |||
186 | 508 | fernando | return ds;
|
187 | 504 | fernando | } |
188 | 442 | vcaballero | |
189 | 504 | fernando | /**
|
190 | 1034 | vcaballero | * Devuelve el fichero.
|
191 | 504 | fernando | *
|
192 | 1034 | vcaballero | * @return Fichero.
|
193 | 504 | fernando | */
|
194 | public File getFile() { |
||
195 | return file;
|
||
196 | } |
||
197 | 4580 | azabala | /**
|
198 | * Returns the feature whose index is numReg
|
||
199 | * <br>
|
||
200 | * Is synchronized to do thread safe accessing to features
|
||
201 | * stored in files.
|
||
202 | * @param numReg index of feature
|
||
203 | * @return feature
|
||
204 | 10627 | caballero | *
|
205 | 4580 | azabala | */
|
206 | 10627 | caballero | public synchronized IFeature getFeature(int numReg) throws ReadDriverException |
207 | 3248 | fjp | { |
208 | IGeometry geom; |
||
209 | IFeature feat = null;
|
||
210 | 10627 | caballero | geom = getShape(numReg); |
211 | DataSource rs = getRecordset();
|
||
212 | Value[] regAtt = new Value[rs.getFieldCount()]; |
||
213 | for (int fieldId=0; fieldId < rs.getFieldCount(); fieldId++ ) |
||
214 | { |
||
215 | regAtt[fieldId] = rs.getFieldValue(numReg, fieldId); |
||
216 | 3248 | fjp | } |
217 | 10627 | caballero | feat = new DefaultFeature(geom, regAtt, "" + numReg); |
218 | 3248 | fjp | return feat;
|
219 | } |
||
220 | 3959 | caballero | |
221 | 214 | fernando | } |