package org.apache.ibatis.logging.jdbc;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
import org.apache.ibatis.reflection.ExceptionUtil;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.Statement;
/**
* Connection proxy to add logging
*/
public class ConnectionLogger extends BaseJdbcLogger implements InvocationHandler {
private static final Log log = LogFactory.getLog(Connection.class);
private Connection connection;
private ConnectionLogger(Connection conn) {
super();
this.connection = conn;
if (log.isDebugEnabled()) {
log.debug("ooo Connection Opened");
}
}
public Object invoke(Object proxy, Method method, Object[] params)
throws Throwable {
try {
if ("prepareStatement".equals(method.getName())) {
PreparedStatement stmt = (PreparedStatement) method.invoke(connection, params);
stmt = PreparedStatementLogger.newInstance(stmt, (String) params[0]);
return stmt;
} else if ("prepareCall".equals(method.getName())) {
PreparedStatement stmt = (PreparedStatement) method.invoke(connection, params);
stmt = PreparedStatementLogger.newInstance(stmt, (String) params[0]);
return stmt;
} else if ("createStatement".equals(method.getName())) {
Statement stmt = (Statement) method.invoke(connection, params);
stmt = StatementLogger.newInstance(stmt);
return stmt;
} else if ("close".equals(method.getName())) {
if (log.isDebugEnabled()) {
log.debug("xxx Connection Closed");
}
return method.invoke(connection, params);
} else {
return method.invoke(connection, params);
}
} catch (Throwable t) {
Throwable t1 = ExceptionUtil.unwrapThrowable(t);
log.error("Error calling Connection." + method.getName() + ':', t1);
throw t1;
}
}
/**
* Creates a logging version of a connection
*
* @param conn - the original connection
* @return - the connection with logging
*/
public static Connection newInstance(Connection conn) {
InvocationHandler handler = new ConnectionLogger(conn);
ClassLoader cl = Connection.class.getClassLoader();
return (Connection) Proxy.newProxyInstance(cl, new Class[]{Connection.class}, handler);
}
/**
* return the wrapped connection
*
* @return the connection
*/
public Connection getConnection() {
return connection;
}
}
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