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package org.apache.commons.dbcp; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.sql.CallableStatement; |
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import java.sql.Connection; |
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import java.sql.DatabaseMetaData; |
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import java.sql.Driver; |
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import java.sql.DriverManager; |
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import java.sql.DriverPropertyInfo; |
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import java.sql.PreparedStatement; |
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import java.sql.SQLException; |
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import java.sql.SQLWarning; |
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import java.sql.Statement; |
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import java.util.HashMap; |
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import java.util.Map; |
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import java.util.NoSuchElementException; |
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import java.util.Properties; |
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import java.util.Set; |
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import org.apache.commons.jocl.JOCLContentHandler; |
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import org.apache.commons.pool.ObjectPool; |
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import org.xml.sax.SAXException; |
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public class PoolingDriver implements Driver { |
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static { |
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try { |
| 56 | 2 | DriverManager.registerDriver(new PoolingDriver()); |
| 57 | 0 | } catch(Exception e) { |
| 58 | 2 | } |
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} |
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| 62 | 2 | protected static final HashMap _pools = new HashMap(); |
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| 65 | 2 | private static boolean accessToUnderlyingConnectionAllowed = false; |
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| 67 | 108 | public PoolingDriver() { |
| 68 | 108 | } |
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public static synchronized boolean isAccessToUnderlyingConnectionAllowed() { |
| 76 | 80 | return accessToUnderlyingConnectionAllowed; |
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} |
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public static synchronized void setAccessToUnderlyingConnectionAllowed(boolean allow) { |
| 87 | 102 | accessToUnderlyingConnectionAllowed = allow; |
| 88 | 102 | } |
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public synchronized ObjectPool getPool(String name) { |
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try { |
| 98 | 0 | return getConnectionPool(name); |
| 99 | |
} |
| 100 | 0 | catch (Exception e) { |
| 101 | 0 | throw new DbcpException(e); |
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} |
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} |
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public synchronized ObjectPool getConnectionPool(String name) throws SQLException { |
| 106 | 2978 | ObjectPool pool = (ObjectPool)(_pools.get(name)); |
| 107 | 2978 | if(null == pool) { |
| 108 | 4 | InputStream in = this.getClass().getResourceAsStream(String.valueOf(name) + ".jocl"); |
| 109 | 4 | if (in == null) { |
| 110 | 2 | in = Thread.currentThread().getContextClassLoader( |
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).getResourceAsStream(String.valueOf(name) + ".jocl"); |
| 112 | |
} |
| 113 | 4 | if(null != in) { |
| 114 | 2 | JOCLContentHandler jocl = null; |
| 115 | |
try { |
| 116 | 2 | jocl = JOCLContentHandler.parse(in); |
| 117 | |
} |
| 118 | 0 | catch (SAXException e) { |
| 119 | 0 | throw (SQLException) new SQLException("Could not parse configuration file").initCause(e); |
| 120 | |
} |
| 121 | 0 | catch (IOException e) { |
| 122 | 0 | throw (SQLException) new SQLException("Could not load configuration file").initCause(e); |
| 123 | 2 | } |
| 124 | 2 | if(jocl.getType(0).equals(String.class)) { |
| 125 | 0 | pool = getPool((String)(jocl.getValue(0))); |
| 126 | 0 | if(null != pool) { |
| 127 | 0 | registerPool(name,pool); |
| 128 | |
} |
| 129 | |
} else { |
| 130 | 2 | pool = ((PoolableConnectionFactory)(jocl.getValue(0))).getPool(); |
| 131 | 2 | if(null != pool) { |
| 132 | 2 | registerPool(name,pool); |
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} |
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} |
| 135 | 2 | } |
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else { |
| 137 | 2 | throw new SQLException("Configuration file not found"); |
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} |
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} |
| 140 | 2976 | return pool; |
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} |
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public synchronized void registerPool(String name, ObjectPool pool) { |
| 144 | 64 | _pools.put(name,pool); |
| 145 | 64 | } |
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public synchronized void closePool(String name) throws SQLException { |
| 148 | 104 | ObjectPool pool = (ObjectPool) _pools.get(name); |
| 149 | 104 | if (pool != null) { |
| 150 | 58 | _pools.remove(name); |
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try { |
| 152 | 58 | pool.close(); |
| 153 | |
} |
| 154 | 0 | catch (Exception e) { |
| 155 | 0 | throw (SQLException) new SQLException("Error closing pool " + name).initCause(e); |
| 156 | 58 | } |
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} |
| 158 | 104 | } |
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public synchronized String[] getPoolNames(){ |
| 161 | 0 | Set names = _pools.keySet(); |
| 162 | 0 | return (String[]) names.toArray(new String[names.size()]); |
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} |
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public boolean acceptsURL(String url) throws SQLException { |
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try { |
| 167 | 3008 | return url.startsWith(URL_PREFIX); |
| 168 | 0 | } catch(NullPointerException e) { |
| 169 | 0 | return false; |
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} |
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} |
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public Connection connect(String url, Properties info) throws SQLException { |
| 174 | 3004 | if(acceptsURL(url)) { |
| 175 | 2976 | ObjectPool pool = getConnectionPool(url.substring(URL_PREFIX_LEN)); |
| 176 | 2974 | if(null == pool) { |
| 177 | 0 | throw new SQLException("No pool found for " + url + "."); |
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} else { |
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try { |
| 180 | 2974 | Connection conn = (Connection)(pool.borrowObject()); |
| 181 | 2970 | if (conn != null) { |
| 182 | 2970 | conn = new PoolGuardConnectionWrapper(pool, conn); |
| 183 | |
} |
| 184 | 2970 | return conn; |
| 185 | 0 | } catch(SQLException e) { |
| 186 | 0 | throw e; |
| 187 | 4 | } catch(NoSuchElementException e) { |
| 188 | 4 | throw (SQLException) new SQLException("Cannot get a connection, pool error: " + e.getMessage()).initCause(e); |
| 189 | 0 | } catch(RuntimeException e) { |
| 190 | 0 | throw e; |
| 191 | 0 | } catch(Exception e) { |
| 192 | 0 | throw (SQLException) new SQLException("Cannot get a connection, general error: " + e.getMessage()).initCause(e); |
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} |
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} |
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} else { |
| 196 | 28 | return null; |
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} |
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} |
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public void invalidateConnection(Connection conn) throws SQLException { |
| 210 | 2 | if (conn instanceof PoolGuardConnectionWrapper) { |
| 211 | 2 | PoolGuardConnectionWrapper pgconn = (PoolGuardConnectionWrapper) conn; |
| 212 | 2 | ObjectPool pool = pgconn.pool; |
| 213 | 2 | Connection delegate = pgconn.delegate; |
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try { |
| 215 | 2 | pool.invalidateObject(delegate); |
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} |
| 217 | 0 | catch (Exception e) { |
| 218 | 2 | } |
| 219 | 2 | pgconn.delegate = null; |
| 220 | 2 | } |
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else { |
| 222 | 0 | throw new SQLException("Invalid connection class"); |
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} |
| 224 | 2 | } |
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public int getMajorVersion() { |
| 227 | 0 | return MAJOR_VERSION; |
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} |
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public int getMinorVersion() { |
| 231 | 0 | return MINOR_VERSION; |
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} |
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public boolean jdbcCompliant() { |
| 235 | 0 | return true; |
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} |
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public DriverPropertyInfo[] getPropertyInfo(String url, Properties info) { |
| 239 | 0 | return new DriverPropertyInfo[0]; |
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} |
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protected static final String URL_PREFIX = "jdbc:apache:commons:dbcp:"; |
| 244 | 2 | protected static final int URL_PREFIX_LEN = URL_PREFIX.length(); |
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protected static final int MAJOR_VERSION = 1; |
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protected static final int MINOR_VERSION = 0; |
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| 254 | 6 | static private class PoolGuardConnectionWrapper extends DelegatingConnection { |
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private final ObjectPool pool; |
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private Connection delegate; |
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PoolGuardConnectionWrapper(ObjectPool pool, Connection delegate) { |
| 260 | 2970 | super(delegate); |
| 261 | 2970 | this.pool = pool; |
| 262 | 2970 | this.delegate = delegate; |
| 263 | 2970 | } |
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protected void checkOpen() throws SQLException { |
| 266 | 2688 | if(delegate == null) { |
| 267 | 4 | throw new SQLException("Connection is closed."); |
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} |
| 269 | 2684 | } |
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public void close() throws SQLException { |
| 272 | 5908 | if (delegate != null) { |
| 273 | 2966 | this.delegate.close(); |
| 274 | 2966 | this.delegate = null; |
| 275 | 2966 | super.setDelegate(null); |
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} |
| 277 | 5908 | } |
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public boolean isClosed() throws SQLException { |
| 280 | 548 | if (delegate == null) { |
| 281 | 178 | return true; |
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} |
| 283 | 370 | return delegate.isClosed(); |
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} |
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public void clearWarnings() throws SQLException { |
| 287 | 0 | checkOpen(); |
| 288 | 0 | delegate.clearWarnings(); |
| 289 | 0 | } |
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public void commit() throws SQLException { |
| 292 | 0 | checkOpen(); |
| 293 | 0 | delegate.commit(); |
| 294 | 0 | } |
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public Statement createStatement() throws SQLException { |
| 297 | 16 | checkOpen(); |
| 298 | 12 | return new DelegatingStatement(this, delegate.createStatement()); |
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} |
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public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException { |
| 302 | 4 | checkOpen(); |
| 303 | 4 | return new DelegatingStatement(this, delegate.createStatement(resultSetType, resultSetConcurrency)); |
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} |
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public boolean equals(Object obj) { |
| 307 | 788 | if (delegate == null){ |
| 308 | 0 | return false; |
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} |
| 310 | 788 | return delegate.equals(obj); |
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} |
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public boolean getAutoCommit() throws SQLException { |
| 314 | 12 | checkOpen(); |
| 315 | 12 | return delegate.getAutoCommit(); |
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} |
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public String getCatalog() throws SQLException { |
| 319 | 0 | checkOpen(); |
| 320 | 0 | return delegate.getCatalog(); |
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} |
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public DatabaseMetaData getMetaData() throws SQLException { |
| 324 | 0 | checkOpen(); |
| 325 | 0 | return delegate.getMetaData(); |
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} |
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public int getTransactionIsolation() throws SQLException { |
| 329 | 0 | checkOpen(); |
| 330 | 0 | return delegate.getTransactionIsolation(); |
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} |
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public Map getTypeMap() throws SQLException { |
| 334 | 0 | checkOpen(); |
| 335 | 0 | return delegate.getTypeMap(); |
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} |
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public SQLWarning getWarnings() throws SQLException { |
| 339 | 80 | checkOpen(); |
| 340 | 80 | return delegate.getWarnings(); |
| 341 | |
} |
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public int hashCode() { |
| 344 | 20 | if (delegate == null){ |
| 345 | 0 | return 0; |
| 346 | |
} |
| 347 | 20 | return delegate.hashCode(); |
| 348 | |
} |
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public boolean isReadOnly() throws SQLException { |
| 351 | 0 | checkOpen(); |
| 352 | 0 | return delegate.isReadOnly(); |
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} |
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public String nativeSQL(String sql) throws SQLException { |
| 356 | 0 | checkOpen(); |
| 357 | 0 | return delegate.nativeSQL(sql); |
| 358 | |
} |
| 359 | |
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public CallableStatement prepareCall(String sql) throws SQLException { |
| 361 | 52 | checkOpen(); |
| 362 | 52 | return new DelegatingCallableStatement(this, delegate.prepareCall(sql)); |
| 363 | |
} |
| 364 | |
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public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException { |
| 366 | 4 | checkOpen(); |
| 367 | 4 | return new DelegatingCallableStatement(this, delegate.prepareCall(sql, resultSetType, resultSetConcurrency)); |
| 368 | |
} |
| 369 | |
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public PreparedStatement prepareStatement(String sql) throws SQLException { |
| 371 | 2484 | checkOpen(); |
| 372 | 2484 | return new DelegatingPreparedStatement(this, delegate.prepareStatement(sql)); |
| 373 | |
} |
| 374 | |
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| 375 | |
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException { |
| 376 | 8 | checkOpen(); |
| 377 | 8 | return new DelegatingPreparedStatement(this, delegate.prepareStatement(sql, resultSetType, resultSetConcurrency)); |
| 378 | |
} |
| 379 | |
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| 380 | |
public void rollback() throws SQLException { |
| 381 | 0 | checkOpen(); |
| 382 | 0 | delegate.rollback(); |
| 383 | 0 | } |
| 384 | |
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| 385 | |
public void setAutoCommit(boolean autoCommit) throws SQLException { |
| 386 | 4 | checkOpen(); |
| 387 | 4 | delegate.setAutoCommit(autoCommit); |
| 388 | 4 | } |
| 389 | |
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| 390 | |
public void setCatalog(String catalog) throws SQLException { |
| 391 | 0 | checkOpen(); |
| 392 | 0 | delegate.setCatalog(catalog); |
| 393 | 0 | } |
| 394 | |
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| 395 | |
public void setReadOnly(boolean readOnly) throws SQLException { |
| 396 | 0 | checkOpen(); |
| 397 | 0 | delegate.setReadOnly(readOnly); |
| 398 | 0 | } |
| 399 | |
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| 400 | |
public void setTransactionIsolation(int level) throws SQLException { |
| 401 | 0 | checkOpen(); |
| 402 | 0 | delegate.setTransactionIsolation(level); |
| 403 | 0 | } |
| 404 | |
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| 405 | |
public void setTypeMap(Map map) throws SQLException { |
| 406 | 0 | checkOpen(); |
| 407 | 0 | delegate.setTypeMap(map); |
| 408 | 0 | } |
| 409 | |
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| 410 | |
public String toString() { |
| 411 | 0 | if (delegate == null){ |
| 412 | 0 | return "NULL"; |
| 413 | |
} |
| 414 | 0 | return delegate.toString(); |
| 415 | |
} |
| 416 | |
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| 417 | |
public int getHoldability() throws SQLException { |
| 418 | 0 | checkOpen(); |
| 419 | 0 | return delegate.getHoldability(); |
| 420 | |
} |
| 421 | |
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| 422 | |
public void setHoldability(int holdability) throws SQLException { |
| 423 | 0 | checkOpen(); |
| 424 | 0 | delegate.setHoldability(holdability); |
| 425 | 0 | } |
| 426 | |
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| 427 | |
public java.sql.Savepoint setSavepoint() throws SQLException { |
| 428 | 0 | checkOpen(); |
| 429 | 0 | return delegate.setSavepoint(); |
| 430 | |
} |
| 431 | |
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| 432 | |
public java.sql.Savepoint setSavepoint(String name) throws SQLException { |
| 433 | 0 | checkOpen(); |
| 434 | 0 | return delegate.setSavepoint(name); |
| 435 | |
} |
| 436 | |
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| 437 | |
public void releaseSavepoint(java.sql.Savepoint savepoint) throws SQLException { |
| 438 | 0 | checkOpen(); |
| 439 | 0 | delegate.releaseSavepoint(savepoint); |
| 440 | 0 | } |
| 441 | |
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| 442 | |
public void rollback(java.sql.Savepoint savepoint) throws SQLException { |
| 443 | 0 | checkOpen(); |
| 444 | 0 | delegate.rollback(savepoint); |
| 445 | 0 | } |
| 446 | |
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| 447 | |
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException { |
| 448 | 4 | checkOpen(); |
| 449 | 4 | return new DelegatingStatement(this, delegate.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability)); |
| 450 | |
} |
| 451 | |
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| 452 | |
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException { |
| 453 | 4 | checkOpen(); |
| 454 | 4 | return new DelegatingCallableStatement(this, delegate.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability)); |
| 455 | |
} |
| 456 | |
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| 457 | |
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException { |
| 458 | 4 | checkOpen(); |
| 459 | 4 | return new DelegatingPreparedStatement(this, delegate.prepareStatement(sql, autoGeneratedKeys)); |
| 460 | |
} |
| 461 | |
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| 462 | |
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException { |
| 463 | 4 | checkOpen(); |
| 464 | 4 | return new DelegatingPreparedStatement(this, delegate.prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability)); |
| 465 | |
} |
| 466 | |
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| 467 | |
public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException { |
| 468 | 4 | checkOpen(); |
| 469 | 4 | return new DelegatingPreparedStatement(this, delegate.prepareStatement(sql, columnIndexes)); |
| 470 | |
} |
| 471 | |
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| 472 | |
public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException { |
| 473 | 4 | checkOpen(); |
| 474 | 4 | return new DelegatingPreparedStatement(this, delegate.prepareStatement(sql, columnNames)); |
| 475 | |
} |
| 476 | |
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| 478 | |
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| 479 | |
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| 480 | |
public Connection getDelegate() { |
| 481 | 0 | if (isAccessToUnderlyingConnectionAllowed()) { |
| 482 | 0 | return super.getDelegate(); |
| 483 | |
} else { |
| 484 | 0 | return null; |
| 485 | |
} |
| 486 | |
} |
| 487 | |
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| 489 | |
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| 490 | |
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| 491 | |
public Connection getInnermostDelegate() { |
| 492 | 80 | if (isAccessToUnderlyingConnectionAllowed()) { |
| 493 | 80 | return super.getInnermostDelegate(); |
| 494 | |
} else { |
| 495 | 0 | return null; |
| 496 | |
} |
| 497 | |
} |
| 498 | |
} |
| 499 | |
} |