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Module containing support classes depending on Java SE 6, Guava 11 and Joda-Time 2.0

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/*
 * Copyright (C) the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.derquinse.common.meta;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Exception thrown when a duplicate metaclass registration is detected.
 * @author Andres Rodriguez
 */
final class DuplicateMetaClassException extends RuntimeException {
	/** Serial UID. */
	private static final long serialVersionUID = 160725587450411968L;
	/** Already registered meta class. */
	private final MetaClass metaClass;

	/**
	 * Default constructor.
	 */
	DuplicateMetaClassException(MetaClass metaClass) {
		this.metaClass = checkNotNull(metaClass);
	}

	/** Returns the registered meta class. */
	MetaClass getMetaClass() {
		return metaClass;
	}

}