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package com.sun.enterprise.connectors.work;
import com.sun.enterprise.connectors.ConnectorRuntimeException;
import com.sun.logging.LogDomains;
import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.resource.spi.work.WorkManager;
import com.sun.enterprise.util.i18n.StringManager;
/**
* WorkManagerFactory allows other customized WorkManager implementation
* to be plugged into the server. The name of the customized
* implementation class for the WorkManager has to be specified as
* a system property "workmanager.class".
* <p>
* It is assumed that the implementation for WorkManager also provides
* a public method called "getInstance" that returns a WorkManager object.
* This frees the WorkManagerFactory from deciding whether WorkManager
* is implemented as a Singleton in the server.
* <p>
* @author Qingqing Ouyang, Binod P.G.
*/
public final class WorkManagerFactory {
private static final String DEFAULT =
"com.sun.enterprise.connectors.work.CommonWorkManager";
private static final String WORK_MANAGER_CLASS = "workmanager.class";
private static final Logger logger =
LogDomains.getLogger(LogDomains.RSR_LOGGER);
private static final StringManager localStrings =
StringManager.getManager(WorkManagerFactory.class);
/**
* This is called by the constructor of BootstrapContextImpl
*/
public static WorkManager getWorkManager(String poolName)
throws ConnectorRuntimeException {
String className = null;
String methodName = "getInstance";
Class cls = null;
WorkManager wm = null;
try {
className = System.getProperty(WORK_MANAGER_CLASS, DEFAULT);
// Default work manager implementation is not a singleton.
if (className.equals(DEFAULT)) {
return new CommonWorkManager(poolName);
}
cls = Class.forName(className);
if (cls != null) {
Method method = cls.getMethod("getInstance", new Class[]{});
wm = (WorkManager) method.invoke(cls, new Object[] {});
}
} catch (Exception e) {
String msg = localStrings.getString("workmanager.instantiation_error");
logger.log(Level.SEVERE, msg, e);
}
return wm;
}
}