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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
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package com.sun.tools.visualvm.tools.jmx;


import com.sun.tools.visualvm.core.model.ModelFactory;
import com.sun.tools.visualvm.application.Application;

/**
 * The {@code JmxModelFactory} class is a factory class for getting
 * the {@link JmxModel} representation for the {@link Application}.
 *
 * @author Luis-Miguel Alventosa
 */
public final class JmxModelFactory extends ModelFactory<JmxModel, Application> {

    private static JmxModelFactory factory;

    private JmxModelFactory() {
    }

    /**
     * Getter for the default version of the {@link JmxModelFactory}.
     * 
     * @return an instance of {@link JmxModelFactory}.
     */
    public static synchronized JmxModelFactory getDefault() {
        if (factory == null) {
            factory = new JmxModelFactory();
        }
        return factory;
    }

    /**
     * Factory method for obtaining the {@link JmxModel} for the given
     * {@link Application}. Note that there is only one instance of
     * {@link JmxModel} for application instance. This {@link JmxModel}
     * instance is cached.
     * 
     * @param app application.
     * 
     * @return a {@link JmxModel} instance which encapsulates the
     * application's JMX model.
     */
    public static JmxModel getJmxModelFor(Application app) {
        return getDefault().getModel(app);
    }

}
