| 42 |
42 |
import org.slf4j.Logger;
|
| 43 |
43 |
import org.slf4j.LoggerFactory;
|
| 44 |
44 |
|
| 45 |
|
|
| 46 |
45 |
/**
|
| 47 |
|
* Connection to the EPSG database in HSQL database engine format using JDBC. The EPSG
|
| 48 |
|
* database can be downloaded from <A HREF="http://www.epsg.org">http://www.epsg.org</A>.
|
| 49 |
|
* The SQL scripts (modified for the HSQL syntax as <A HREF="doc-files/HSQL.html">explained
|
| 50 |
|
* here</A>) are bundled into this plugin. The database version is given in the
|
|
46 |
* Connection to the EPSG database in HSQL database engine format using JDBC.
|
|
47 |
* The EPSG database can be downloaded from <A
|
|
48 |
* HREF="http://www.epsg.org">http://www.epsg.org</A>. The SQL scripts (modified
|
|
49 |
* for the HSQL syntax as <A HREF="doc-files/HSQL.html">explained here</A>) are
|
|
50 |
* bundled into this plugin. The database version is given in the
|
| 51 |
51 |
* {@linkplain org.opengis.metadata.citation.Citation#getEdition edition attribute}
|
| 52 |
|
* of the {@linkplain org.opengis.referencing.AuthorityFactory#getAuthority authority}.
|
|
52 |
* of the
|
|
53 |
* {@linkplain org.opengis.referencing.AuthorityFactory#getAuthority authority}.
|
| 53 |
54 |
* The HSQL database is read only.
|
| 54 |
55 |
* <P>
|
| 55 |
56 |
* <H3>Implementation note</H3>
|
| 56 |
|
* The SQL scripts are executed the first time a connection is required. The database
|
| 57 |
|
* is then created as cached tables ({@code HSQL.properties} and {@code HSQL.data} files)
|
| 58 |
|
* in a temporary directory. Future connections to the EPSG database while reuse the cached
|
| 59 |
|
* tables, if available. Otherwise, the scripts will be executed again in order to recreate
|
| 60 |
|
* them.
|
|
57 |
* The SQL scripts are executed the first time a connection is required. The
|
|
58 |
* database is then created as cached tables ({@code HSQL.properties} and
|
|
59 |
* {@code HSQL.data} files) in a temporary directory. Future connections to the
|
|
60 |
* EPSG database while reuse the cached tables, if available. Otherwise, the
|
|
61 |
* scripts will be executed again in order to recreate them.
|
| 61 |
62 |
*
|
| 62 |
63 |
* @version $Id: HSQLDataSource.java 14624 2005-06-29 02:19:08Z desruisseaux $
|
| 63 |
64 |
* @author Martin Desruisseaux
|
| ... | ... | |
| 66 |
67 |
* @since 2.2
|
| 67 |
68 |
*/
|
| 68 |
69 |
public class HSQLDataSource extends jdbcDataSource implements DataSource {
|
| 69 |
|
// 20090518 cmartinez: Use a different tmp dir for each geotools instance
|
| 70 |
|
private static File tmpDir = null;
|
| 71 |
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|
| 72 |
|
private static final Logger logger = LoggerFactory.getLogger(HSQLDataSource.class);
|
|
70 |
|
|
71 |
// 20090518 cmartinez: Use a different tmp dir for each geotools instance
|
|
72 |
private static File tmpDir = null;
|
|
73 |
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|
74 |
private static final Logger logger = LoggerFactory.getLogger(HSQLDataSource.class);
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|
75 |
|
| 73 |
76 |
/**
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| 74 |
77 |
* Creates a new instance of this data source
|
| 75 |
78 |
*/
|
| ... | ... | |
| 85 |
88 |
*/
|
| 86 |
89 |
final StringBuffer url = new StringBuffer("jdbc:hsqldb:file:");
|
| 87 |
90 |
final String path = directory.getAbsolutePath().replace(File.separatorChar, '/');
|
| 88 |
|
if (path.length()==0 || path.charAt(0)!='/') {
|
|
91 |
if (path.length() == 0 || path.charAt(0) != '/') {
|
| 89 |
92 |
url.append('/');
|
| 90 |
93 |
}
|
| 91 |
94 |
url.append(path);
|
| 92 |
|
if (url.charAt(url.length()-1) != '/') {
|
|
95 |
if (url.charAt(url.length() - 1) != '/') {
|
| 93 |
96 |
url.append('/');
|
| 94 |
97 |
}
|
| 95 |
98 |
url.append("EPSG");
|
| ... | ... | |
| 105 |
108 |
setUser("SA"); // System administrator. No password.
|
| 106 |
109 |
}
|
| 107 |
110 |
|
| 108 |
|
private static File getGtTmpDir() {
|
| 109 |
|
if (tmpDir == null) {
|
| 110 |
|
// tmpDir = new File(System.getProperty("java.io.tmpdir", "."), "Geotools-"+System.currentTimeMillis());
|
| 111 |
|
tmpDir = new File( CrsFactory.getDataBaseFolder(),"temp-"+ getProcessId());
|
| 112 |
|
Runtime.getRuntime().addShutdownHook( new RemoveFolderOnShutdown(tmpDir) );
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| 113 |
|
}
|
| 114 |
|
return tmpDir;
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|
111 |
private File getGtTmpDir() {
|
|
112 |
if (tmpDir == null) {
|
|
113 |
tmpDir = new File(CrsFactory.getDataBaseFolder(), "temp-" + getProcessId());
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|
114 |
Runtime.getRuntime().addShutdownHook(new cleanOnShutdown(this));
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|
115 |
}
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|
116 |
return tmpDir;
|
| 115 |
117 |
}
|
| 116 |
118 |
|
| 117 |
119 |
private static String getProcessId() {
|
| 118 |
|
String fallback = "time" + System.currentTimeMillis();
|
| 119 |
|
|
|
120 |
String fallback = "time" + System.currentTimeMillis();
|
|
121 |
|
| 120 |
122 |
// something like '<pid>@<hostname>', at least in SUN / Oracle JVMs
|
| 121 |
123 |
final String jvmName = ManagementFactory.getRuntimeMXBean().getName();
|
| 122 |
124 |
final int index = jvmName.indexOf('@');
|
| ... | ... | |
| 125 |
127 |
return fallback;
|
| 126 |
128 |
}
|
| 127 |
129 |
try {
|
| 128 |
|
return "pid"+Long.toString(Long.parseLong(jvmName.substring(0, index)));
|
|
130 |
return "pid" + Long.toString(Long.parseLong(jvmName.substring(0, index)));
|
| 129 |
131 |
} catch (NumberFormatException e) {
|
| 130 |
132 |
// ignore
|
| 131 |
133 |
}
|
| 132 |
134 |
return fallback;
|
| 133 |
135 |
}
|
| 134 |
|
|
| 135 |
|
public static class RemoveFolderOnShutdown extends Thread {
|
| 136 |
|
private File folder;
|
| 137 |
|
public RemoveFolderOnShutdown(File folder) {
|
| 138 |
|
this.folder = folder;
|
| 139 |
|
}
|
| 140 |
|
public void run() {
|
| 141 |
|
try {
|
| 142 |
|
logger.info("Deleting CRS temporary database folder ("+folder.getAbsolutePath()+").");
|
| 143 |
|
FileUtils.deleteDirectory(this.folder);
|
| 144 |
|
} catch (IOException e) {
|
| 145 |
|
logger.error("Can't delete CRS temporary database folder ("+this.folder+".",e);
|
| 146 |
|
}
|
| 147 |
|
}
|
|
136 |
|
|
137 |
public static class cleanOnShutdown extends Thread {
|
|
138 |
|
|
139 |
private HSQLDataSource ds;
|
|
140 |
|
|
141 |
public cleanOnShutdown(HSQLDataSource ds) {
|
|
142 |
this.ds = ds;
|
|
143 |
}
|
|
144 |
|
|
145 |
public void run() {
|
|
146 |
this.shutdown();
|
|
147 |
this.delete();
|
|
148 |
}
|
|
149 |
|
|
150 |
private void delete() {
|
|
151 |
File folder = HSQLDataSource.tmpDir;
|
|
152 |
if (folder == null) {
|
|
153 |
return;
|
|
154 |
}
|
|
155 |
try {
|
|
156 |
logger.info("Deleting CRS temporary database folder (" + folder.getAbsolutePath() + ").");
|
|
157 |
FileUtils.deleteDirectory(folder);
|
|
158 |
} catch (IOException e) {
|
|
159 |
logger.error("Can't delete CRS temporary database folder (" + folder + ".", e);
|
|
160 |
}
|
|
161 |
}
|
|
162 |
|
|
163 |
private void shutdown() {
|
|
164 |
try {
|
|
165 |
logger.info("Shutdown the data-base.");
|
|
166 |
Connection connection = this.ds.getConnection(false);
|
|
167 |
final Statement statement = connection.createStatement();
|
|
168 |
statement.execute("SHUTDOWN");
|
|
169 |
statement.close();
|
|
170 |
connection.close();
|
|
171 |
} catch (Exception ex) {
|
|
172 |
logger.error("Can't shutdown the database.", ex);
|
|
173 |
}
|
|
174 |
}
|
| 148 |
175 |
}
|
| 149 |
|
|
|
176 |
|
| 150 |
177 |
/**
|
| 151 |
|
* Returns the priority for this data source. This priority is set to a lower value than
|
| 152 |
|
* the {@linkplain AccessDataSource}'s one in order to give the priority to the Access-backed
|
| 153 |
|
* database, if presents. Priorities are set that way because:
|
|
178 |
* Returns the priority for this data source. This priority is set to a
|
|
179 |
* lower value than the {@linkplain AccessDataSource}'s one in order to give
|
|
180 |
* the priority to the Access-backed database, if presents. Priorities are
|
|
181 |
* set that way because:
|
| 154 |
182 |
* <ul>
|
| 155 |
|
* <li>The MS-Access format is the primary EPSG database format.</li>
|
| 156 |
|
* <li>If a user downloads the MS-Access database himself, he probably wants to use it.</li>
|
|
183 |
* <li>The MS-Access format is the primary EPSG database format.</li>
|
|
184 |
* <li>If a user downloads the MS-Access database himself, he probably wants
|
|
185 |
* to use it.</li>
|
| 157 |
186 |
* </ul>
|
| 158 |
187 |
*/
|
| 159 |
188 |
public int getPriority() {
|
| ... | ... | |
| 161 |
190 |
}
|
| 162 |
191 |
|
| 163 |
192 |
/**
|
| 164 |
|
* Returns {@code true} if the database contains data. This method returns {@code false}
|
| 165 |
|
* if an empty EPSG database has been automatically created by HSQL and not yet populated.
|
|
193 |
* Returns {@code true} if the database contains data. This method returns
|
|
194 |
* {@code false} if an empty EPSG database has been automatically created by
|
|
195 |
* HSQL and not yet populated.
|
| 166 |
196 |
*/
|
| 167 |
197 |
private static boolean dataExists(final Connection connection) throws SQLException {
|
| 168 |
198 |
final ResultSet tables = connection.getMetaData().getTables(
|
| 169 |
|
null, null, "EPSG_%", new String[] {"TABLE"});
|
|
199 |
null, null, "EPSG_%", new String[]{"TABLE"});
|
| 170 |
200 |
final boolean exists = tables.next();
|
| 171 |
201 |
tables.close();
|
| 172 |
202 |
return exists;
|
| 173 |
203 |
}
|
| 174 |
204 |
|
| 175 |
205 |
/**
|
| 176 |
|
* Opens a connection to the database. If the cached tables are not available,
|
| 177 |
|
* they will be created now from the SQL scripts bundled in this plugin.
|
|
206 |
* Opens a connection to the database. If the cached tables are not
|
|
207 |
* available, they will be created now from the SQL scripts bundled in this
|
|
208 |
* plugin.
|
| 178 |
209 |
*/
|
| 179 |
210 |
public Connection getConnection() throws SQLException {
|
|
211 |
return getConnection(true);
|
|
212 |
}
|
|
213 |
|
|
214 |
public Connection getConnection(boolean initialize) throws SQLException {
|
| 180 |
215 |
final String database = getDatabase();
|
| 181 |
|
if (database==null || database.trim().length()==0) {
|
|
216 |
if (database == null || database.trim().length() == 0) {
|
| 182 |
217 |
/*
|
| 183 |
218 |
* The 'database' attribute is unset if the constructor has been unable
|
| 184 |
219 |
* to locate the temporary directory, or to create the subdirectory.
|
| 185 |
220 |
*/
|
| 186 |
|
// TODO: localize
|
| 187 |
221 |
throw new SQLException("Can't write to the temporary directory.");
|
| 188 |
222 |
}
|
| 189 |
223 |
Connection connection = super.getConnection();
|
|
224 |
if (!initialize) {
|
|
225 |
return connection;
|
|
226 |
}
|
| 190 |
227 |
if (!dataExists(connection)) {
|
| 191 |
228 |
/*
|
| 192 |
229 |
* HSQL has created automatically an empty database. We need to populate it.
|
| ... | ... | |
| 194 |
231 |
* a full SQL statement. For this plugin however, we have compressed "INSERT
|
| 195 |
232 |
* INTO" statements using Compactor class in this package.
|
| 196 |
233 |
*/
|
| 197 |
|
logger.info("Creating temporary cached EPSG database in '"+getGtTmpDir().getAbsolutePath()+"'.");
|
|
234 |
logger.info("Creating temporary cached EPSG database in '" + getGtTmpDir().getAbsolutePath() + "'.");
|
| 198 |
235 |
final Statement statement = connection.createStatement();
|
| 199 |
236 |
try {
|
| 200 |
|
FileInputStream sqlInputStream = new FileInputStream(new File(CrsFactory.getDataBaseFolder(),"EPSG.sql"));
|
|
237 |
FileInputStream sqlInputStream = new FileInputStream(new File(CrsFactory.getDataBaseFolder(), "EPSG.sql"));
|
| 201 |
238 |
final BufferedReader in = new BufferedReader(new InputStreamReader(
|
| 202 |
|
sqlInputStream, "ISO-8859-1"));
|
| 203 |
|
|
| 204 |
|
// final BufferedReader in = new BufferedReader(new InputStreamReader(
|
| 205 |
|
// HSQLDataSource.class.getResourceAsStream("EPSG.sql"), "ISO-8859-1"));
|
| 206 |
|
|
| 207 |
|
|
|
239 |
sqlInputStream, "ISO-8859-1"));
|
| 208 |
240 |
StringBuffer insertStatement = null;
|
| 209 |
241 |
String line;
|
| 210 |
|
while ((line=in.readLine()) != null) {
|
|
242 |
while ((line = in.readLine()) != null) {
|
| 211 |
243 |
line = line.trim();
|
| 212 |
244 |
final int length = line.length();
|
| 213 |
245 |
if (length != 0) {
|
| ... | ... | |
| 228 |
260 |
*/
|
| 229 |
261 |
final int values = insertStatement.length();
|
| 230 |
262 |
insertStatement.append(line);
|
| 231 |
|
final boolean hasMore = (line.charAt(length-1) == ',');
|
|
263 |
final boolean hasMore = (line.charAt(length - 1) == ',');
|
| 232 |
264 |
if (hasMore) {
|
| 233 |
|
insertStatement.setLength(insertStatement.length()-1);
|
|
265 |
insertStatement.setLength(insertStatement.length() - 1);
|
| 234 |
266 |
}
|
| 235 |
267 |
line = insertStatement.toString();
|
| 236 |
268 |
insertStatement.setLength(values);
|
| ... | ... | |
| 244 |
276 |
in.close();
|
| 245 |
277 |
} catch (IOException exception) {
|
| 246 |
278 |
statement.close();
|
| 247 |
|
SQLException e = new SQLException("Can't read the SQL script."); // TODO: localize
|
|
279 |
SQLException e = new SQLException("Can't read the SQL script.");
|
| 248 |
280 |
e.initCause(exception);
|
| 249 |
281 |
throw e;
|
| 250 |
282 |
}
|
| ... | ... | |
| 257 |
289 |
}
|
| 258 |
290 |
|
| 259 |
291 |
/**
|
| 260 |
|
* Open a connection and creates an {@linkplain FactoryUsingSQL EPSG factory} for it.
|
|
292 |
* Open a connection and creates an
|
|
293 |
* {@linkplain FactoryUsingSQL EPSG factory} for it.
|
| 261 |
294 |
*
|
| 262 |
|
* @param factories The low-level factories to use for CRS creation.
|
|
295 |
* @param factories The low-level factories to use for CRS creation.
|
| 263 |
296 |
* @return The EPSG factory using HSQLDB SQL syntax.
|
| 264 |
297 |
* @throws SQLException if connection to the database failed.
|
| 265 |
298 |
*/
|
| 266 |
299 |
public AbstractAuthorityFactory createFactory(final FactoryGroup factories) throws SQLException {
|
| 267 |
300 |
return new FactoryUsingHSQL(factories, getConnection());
|
| 268 |
301 |
}
|
| 269 |
|
|
|
302 |
|
| 270 |
303 |
public java.util.logging.Logger getParentLogger()
|
| 271 |
|
throws SQLFeatureNotSupportedException {
|
| 272 |
|
// TODO Auto-generated method stub
|
| 273 |
|
return null;
|
|
304 |
throws SQLFeatureNotSupportedException {
|
|
305 |
// TODO Auto-generated method stub
|
|
306 |
return null;
|
| 274 |
307 |
}
|
| 275 |
|
|
|
308 |
|
| 276 |
309 |
public boolean isWrapperFor(Class<?> iface) throws SQLException {
|
| 277 |
|
// TODO Auto-generated method stub
|
| 278 |
|
return false;
|
|
310 |
// TODO Auto-generated method stub
|
|
311 |
return false;
|
| 279 |
312 |
}
|
| 280 |
|
|
|
313 |
|
| 281 |
314 |
public <T> T unwrap(Class<T> iface) throws SQLException {
|
| 282 |
|
// TODO Auto-generated method stub
|
| 283 |
|
return null;
|
|
315 |
// TODO Auto-generated method stub
|
|
316 |
return null;
|
| 284 |
317 |
}
|
| 285 |
318 |
}
|