/** ************ private stuff ************** */
private void closeConnectionIfNecessary() {
try {
if (connection.autoClose) {
connection.close();
}
} catch (Exception ex) {
throw new Sql2oException("Error while attempting to close connection", ex);
}
}
/** 关闭连接 */
public static final void closeConnection() {
Connection conn = conns.get();
try {
if (conn != null && !conn.isClosed()) {
conn.setAutoCommit(true);
conn.close();
connectionContext.remove(Thread.currentThread().getId());
}
} catch (SQLException e) {
log.error("Unabled to close connection!!! ", e);
}
conns.set(null);
}
/**
* Try to update the row with the given error. Flag a failure if a timeout occurs when not
* expected, and vice versa.
*
* @param id The id of the row to be updated
* @param timeoutExpected true if it is expected that the update times out
* @throws java.sql.SQLException
*/
private void executeParallelUpdate(int id, boolean timeoutExpected) throws SQLException {
Connection conn2 = openDefaultConnection();
Statement stmt2 = conn2.createStatement();
try {
stmt2.executeUpdate(
"update BLOBCLOB set BLOBDATA = " + "cast(X'FFFFFF' as blob) where ID=" + id);
stmt2.close();
conn2.commit();
conn2.close();
if (timeoutExpected) {
fail("FAIL - should have gotten lock timeout");
}
} catch (SQLException se) {
stmt2.close();
conn2.rollback();
conn2.close();
if (timeoutExpected) {
assertSQLState(LOCK_TIMEOUT, se);
} else {
throw se;
}
}
}
// TODO: factor out repetitive debugging code
private synchronized void close(boolean known_invalid) throws SQLException {
// System.err.println("Closing " + this);
if (physicalConnection != null) {
try {
StringBuffer debugOnlyLog = null;
if (Debug.DEBUG && known_invalid) {
debugOnlyLog = new StringBuffer();
debugOnlyLog.append("[ exceptions: ");
}
Exception exc = cleanupUncachedActiveStatements();
if (Debug.DEBUG && exc != null) {
if (known_invalid) debugOnlyLog.append(exc.toString() + ' ');
else
logger.log(
MLevel.WARNING,
"An exception occurred while cleaning up uncached active Statements.",
exc);
// exc.printStackTrace();
}
try {
// we've got to use silentClose() rather than close() here,
// 'cuz if there's still an exposedProxy (say a user forgot to
// close his Connection) before we close, and we use regular (loud)
// close, we will try to check this dead or dying PooledConnection
// back into the pool. We only want to do this when close is called
// on user proxies, and the underlying PooledConnection might still
// be good. The PooledConnection itself should only be closed by the
// pool.
if (exposedProxy != null) exposedProxy.silentClose(known_invalid);
} catch (Exception e) {
if (Debug.DEBUG) {
if (known_invalid) debugOnlyLog.append(e.toString() + ' ');
else logger.log(MLevel.WARNING, "An exception occurred.", exc);
// e.printStackTrace();
}
exc = e;
}
try {
this.closeAll();
} catch (Exception e) {
if (Debug.DEBUG) {
if (known_invalid) debugOnlyLog.append(e.toString() + ' ');
else logger.log(MLevel.WARNING, "An exception occurred.", exc);
// e.printStackTrace();
}
exc = e;
}
try {
physicalConnection.close();
} catch (Exception e) {
if (Debug.DEBUG) {
if (known_invalid) debugOnlyLog.append(e.toString() + ' ');
else logger.log(MLevel.WARNING, "An exception occurred.", exc);
e.printStackTrace();
}
exc = e;
}
if (exc != null) {
if (known_invalid) {
debugOnlyLog.append(" ]");
if (Debug.DEBUG) {
// System.err.print("[DEBUG]" + this + ": while closing a PooledConnection known
// to be invalid, ");
// System.err.println(" some exceptions occurred. This is probably not a
// problem:");
// System.err.println( debugOnlyLog.toString() );
logger.fine(
this
+ ": while closing a PooledConnection known to be invalid, "
+ " some exceptions occurred. This is probably not a problem: "
+ debugOnlyLog.toString());
}
} else
throw new SQLException(
"At least one error occurred while attempting "
+ "to close() the PooledConnection: "
+ exc);
}
if (Debug.TRACE == Debug.TRACE_MAX)
logger.fine("C3P0PooledConnection closed. [" + this + ']');
// System.err.println("C3P0PooledConnection closed. [" + this + ']');
} finally {
physicalConnection = null;
}
}
}
void close() throws SQLException {
m_originConnection.close();
}