static {
classNamesToConnectionTesters.put(
C3P0Defaults.connectionTesterClassName(), C3P0Defaults.connectionTester());
String userManagementCoordinator = C3P0ConfigUtils.getPropsFileConfigProperty(MC_PARAM);
if (userManagementCoordinator != null) {
try {
mc = (ManagementCoordinator) Class.forName(userManagementCoordinator).newInstance();
} catch (Exception e) {
if (logger.isLoggable(MLevel.WARNING))
logger.log(
MLevel.WARNING,
"Could not instantiate user-specified ManagementCoordinator "
+ userManagementCoordinator
+ ". Using NullManagementCoordinator (c3p0 JMX management disabled!)",
e);
mc = new NullManagementCoordinator();
}
} else {
try {
Class.forName("java.lang.management.ManagementFactory");
mc =
(ManagementCoordinator)
Class.forName("com.mchange.v2.c3p0.management.ActiveManagementCoordinator")
.newInstance();
} catch (Exception e) {
if (logger.isLoggable(MLevel.INFO))
logger.log(
MLevel.INFO, "jdk1.5 management interfaces unavailable... JMX support disabled.", e);
mc = new NullManagementCoordinator();
}
}
}
public static ConnectionTester getConnectionTester(String className) {
try {
ConnectionTester out = (ConnectionTester) classNamesToConnectionTesters.get(className);
if (out == null) {
out = (ConnectionTester) Class.forName(className).newInstance();
classNamesToConnectionTesters.put(className, out);
}
return out;
} catch (Exception e) {
if (logger.isLoggable(MLevel.WARNING))
logger.log(
MLevel.WARNING,
"Could not create for find ConnectionTester with class name '"
+ className
+ "'. Using default.",
e);
return C3P0Defaults.connectionTester();
}
}