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*
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package com.sun.tools.visualvm.application.jvm;
import com.sun.tools.visualvm.application.Application;
import com.sun.tools.visualvm.core.model.ModelFactory;
import com.sun.tools.visualvm.core.model.ModelProvider;
/**
* The JVMFactory class is a factory class for getting the
* {@link Jvm} representation for the {@link Application}.
*
* @author Tomas Hurka
*/
public final class JvmFactory extends ModelFactory<Jvm,Application> implements ModelProvider<Jvm,Application> {
private static JvmFactory jvmFactory;
private JvmFactory() {
}
/**
* Getter for the default version of the JvmFactory.
* @return instance of {@link JvmFactory}.
*/
public static synchronized JvmFactory getDefault() {
if (jvmFactory == null) {
jvmFactory = new JvmFactory();
jvmFactory.registerProvider(jvmFactory);
}
return jvmFactory;
}
/**
* Factory method for obtaining {@link Jvm} for {@link Application}. Note that there
* is only one instance of {@link Jvm} for a concrete application. This {@link Jvm}
* instance is cached.
* @param app application
* @return {@link Jvm} instance which encapsulates application's JVM.
*/
public static Jvm getJVMFor(Application app) {
return getDefault().getModel(app);
}
/**
* Default {@link ModelProvider} implementation, which creates
* dummy {@link Jvm} instances. If you want to extend JvmFactory use
* {@link JvmFactory#registerProvider(ModelProvider )} to register the new instances
* of {@link ModelProvider} for the different types of {@link Application}.
* @param app application
* @return dummy instance of {@link Jvm}
*/
public Jvm createModelFor(Application app) {
return new DefaultJvm();
}
}