Java Code Examples for java.sql.Connection#getClass()
The following examples show how to use
java.sql.Connection#getClass() .
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Example 1
Source Project: netbeans File: ErrorPositionExtractor.java License: Apache License 2.0 | 6 votes |
/** * Extract location information for Informix DB. * * <p> * For Informix the location information is not present in the exception * itself. It has to be extracted from the connection.</p> * * <p> * In this case the connection is accessed via reflection to call the * corresponding method.</p> * * <p> * In case connection gets wrapped later it needs to be unwrapped here.</p> */ private static int extractErrorPositionForInformix(Connection con, Statement stmt, Throwable ex, String sql) { // try to get exact position from exception message if (ex == null) { return -1; } Class connectionClass = con.getClass(); if (connectionClass.getName().startsWith("com.informix.jdbc")) { try { Method getSQLStatementOffset = connectionClass.getMethod("getSQLStatementOffset"); int column = (Integer) getSQLStatementOffset.invoke(con); if (column <= 0) { return -1; } else { return column - 1; } } catch (NoSuchMethodException | SecurityException | IllegalAccessException | IllegalArgumentException | InvocationTargetException innerEx) { LOG.log(Level.FINE, "Failed to extract informix error location", innerEx); return -1; } } else { return -1; } }
Example 2
Source Project: dekaf File: JdbcIntermediateFacade.java License: Apache License 2.0 | 6 votes |
/** * Try to call the "Connection#getSchema()" function * that appears in JRE 1.7. * * Some JDBC vendor can also ignore this method or throw exceptions. */ @Nullable private static String getSchema(final Connection connection) { String schemaName = null; try { final Class<? extends Connection> connectionClass = connection.getClass(); final Method getSchemaMethod = connectionClass.getMethod("getSchema"); if (getSchemaMethod != null) { schemaName = (String) getSchemaMethod.invoke(connection); } } catch (NoSuchMethodException nsm) { // no such method. sad } catch (Exception e) { // TODO log this somehow? } return schemaName; }
Example 3
Source Project: apm-agent-java File: JdbcHelperImpl.java License: Apache License 2.0 | 5 votes |
@Nullable private ConnectionMetaData getConnectionMetaData(Connection connection) { ConnectionMetaData connectionMetaData = metaDataMap.get(connection); if (connectionMetaData != null) { return connectionMetaData; } Class<?> type = connection.getClass(); Boolean supported = isSupported(metadataSupported, type); if (supported == Boolean.FALSE) { return null; } try { DatabaseMetaData metaData = connection.getMetaData(); connectionMetaData = ConnectionMetaData.create(metaData.getURL(), metaData.getUserName()); if (supported == null) { markSupported(metadataSupported, type); } } catch (SQLException e) { markNotSupported(metadataSupported, type, e); } if (connectionMetaData != null) { metaDataMap.put(connection, connectionMetaData); } return connectionMetaData; }
Example 4
Source Project: lams File: DefaultSchemaNameResolver.java License: GNU General Public License v2.0 | 5 votes |
private SchemaNameResolver determineAppropriateResolverDelegate(Connection connection) { // unfortunately Connection#getSchema is only available in Java 1.7 and above // and Hibernate still baselines on 1.6. So for now, use reflection and // leverage the Connection#getSchema method if it is available. try { final Class<? extends Connection> jdbcConnectionClass = connection.getClass(); final Method getSchemaMethod = jdbcConnectionClass.getMethod( "getSchema" ); if ( getSchemaMethod != null && getSchemaMethod.getReturnType().equals( String.class ) ) { try { // If the JDBC driver does not implement the Java 7 spec, but the JRE is Java 7 // then the getSchemaMethod is not null but the call to getSchema() throws an java.lang.AbstractMethodError connection.getSchema(); return new SchemaNameResolverJava17Delegate(); } catch (java.lang.AbstractMethodError e) { log.debugf( "Unable to use Java 1.7 Connection#getSchema" ); return SchemaNameResolverFallbackDelegate.INSTANCE; } } else { log.debugf( "Unable to use Java 1.7 Connection#getSchema" ); return SchemaNameResolverFallbackDelegate.INSTANCE; } } catch (Exception ignore) { log.debugf( "Unable to use Java 1.7 Connection#getSchema : An error occurred trying to resolve the connection default schema resolver: " + ignore.getMessage() ); return SchemaNameResolverFallbackDelegate.INSTANCE; } }
Example 5
Source Project: lastaflute File: TransactionRomanticSnapshotBuilder.java License: Apache License 2.0 | 5 votes |
protected Object digUpDbmsNativeProcessIdOf(Connection physicalConn) { final Class<?> connType = physicalConn.getClass(); if (getMySQLConnectionClassFQCN().equals(connType.getName())) { final Method method = DfReflectionUtil.getPublicMethod(connType, "getId", (Class<?>[]) null); return DfReflectionUtil.invoke(method, physicalConn, (Object[]) null); } return null; }
Example 6
Source Project: tddl File: My_Transaction.java License: Apache License 2.0 | 5 votes |
private static TGroupConnection getTGroupConnection(Connection con) { if (con instanceof TGroupConnection) { return (TGroupConnection) con; } throw new RuntimeException("impossible,connection is not TGroupConnection:" + con.getClass()); }
Example 7
Source Project: tddl5 File: EncodingUtils.java License: Apache License 2.0 | 4 votes |
public static String getEncoding(Connection conn) { if (conn instanceof IConnection) { return ((IConnection) conn).getEncoding(); } if (conn instanceof TConnectionWrapper) { conn = ((TConnectionWrapper) conn).getTargetConnection(); return getEncoding(conn); } if (conn instanceof DruidPooledConnection) { conn = ((DruidPooledConnection) conn).getConnection(); return getEncoding(conn); } try { final Class<?> clazz = conn.getClass(); Method getMethod = getMethodCaches.get(clazz, new Callable<Method>() { @Override public Method call() throws Exception { Class c = clazz; while (true) { try { Method setMethod = c.getDeclaredMethod("getEncoding", new Class[] {}); if (setMethod != null) { setMethod.setAccessible(true); } return setMethod; } catch (Exception ex) { } c = c.getSuperclass(); if (c == null) { throw new TddlRuntimeException(ErrorCode.ERR_EXECUTOR, "get getEncoding error, clazz:" + clazz); } } } }); return (String) getMethod.invoke(conn, new Object[] {}); } catch (Throwable e) { throw new TddlNestableRuntimeException(e); } }