Example usage for org.apache.commons.dbcp2 Constants JMX_CONNECTION_BASE_EXT

Introduction

In this page you can find the example usage for org.apache.commons.dbcp2 Constants JMX_CONNECTION_BASE_EXT.

Prototype

String JMX_CONNECTION_BASE_EXT

To view the source code for org.apache.commons.dbcp2 Constants JMX_CONNECTION_BASE_EXT.

Click Source Link

Usage

From source file:JDBCPool.dbcp.demo.sourcecode.PoolableConnectionFactory.java

/**
 * ?PoolDefaultPooledObject??Connection//from www .  ja v a2s.  c  om
 */
@Override
public PooledObject<PoolableConnection> makeObject() throws Exception {
    Connection conn = _connFactory.createConnection();
    if (conn == null) {
        throw new IllegalStateException("Connection factory returned null from createConnection");
    }

    try {
        initializeConnection(conn); //?SQL?SQL
    } catch (SQLException sqle) {
        // Make sure the connection is closed
        try {
            conn.close();
        } catch (SQLException ignore) {
            // ignore
        }
        // Rethrow original exception so it is visible to caller
        throw sqle;
    }

    long connIndex = connectionIndex.getAndIncrement();

    if (poolStatements) {
        conn = new PoolingConnection(conn);
        GenericKeyedObjectPoolConfig config = new GenericKeyedObjectPoolConfig();
        config.setMaxTotalPerKey(-1);
        config.setBlockWhenExhausted(false);
        config.setMaxWaitMillis(0);
        config.setMaxIdlePerKey(1);
        config.setMaxTotal(maxOpenPreparedStatements);
        if (dataSourceJmxName != null) {
            StringBuilder base = new StringBuilder(dataSourceJmxName.toString());
            base.append(Constants.JMX_CONNECTION_BASE_EXT);
            base.append(Long.toString(connIndex));
            config.setJmxNameBase(base.toString());
            config.setJmxNamePrefix(Constants.JMX_STATEMENT_POOL_PREFIX);
        } else {
            config.setJmxEnabled(false);
        }
        KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> stmtPool = new GenericKeyedObjectPool<>(
                (PoolingConnection) conn, config);
        ((PoolingConnection) conn).setStatementPool(stmtPool);
        ((PoolingConnection) conn).setCacheState(_cacheState);
    }

    // Register this connection with JMX
    ObjectName connJmxName;
    if (dataSourceJmxName == null) {
        connJmxName = null;
    } else {
        connJmxName = new ObjectName(
                dataSourceJmxName.toString() + Constants.JMX_CONNECTION_BASE_EXT + connIndex);
    }

    PoolableConnection pc = new PoolableConnection(conn, _pool, connJmxName, _disconnectionSqlCodes,
            _fastFailValidation);

    return new DefaultPooledObject<>(pc);
}

---