de.intarsys.pdf.cos.MetaClass Maven / Gradle / Ivy

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/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.intarsys.pdf.cos;

import java.util.HashMap;
import java.util.Map;

public class MetaClass {
	static private Map metaClasses = new HashMap();

	protected final Class instanceClass;

	public MetaClass(Class instanceClass) {
		super();
		this.instanceClass = instanceClass;
		register(this);
	}

	final public Class getInstanceClass() {
		return instanceClass;
	}

	public Class getRootClass() {
		return getInstanceClass();
	}

	static public synchronized MetaClass lookup(Class clazz) {
		MetaClass result = (MetaClass) metaClasses.get(clazz);
		if (result == null) {
			clazz.getClasses();
			try {
				Class.forName(clazz.getName());
			} catch (ClassNotFoundException e) {
				// ignore
			}
			result = (MetaClass) metaClasses.get(clazz);
		}
		return result;
	}

	static private synchronized void register(MetaClass metaClass) {
		metaClasses.put(metaClass.getInstanceClass(), metaClass);
	}
}