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Object mapping implementation written as an alternative to modelmapper which is able to support inheritance, handles flattening / expanding in a precise way, and is extensible / configurable

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package net.projectmonkey.object.mapper.util;

/*
 *
 *  * Copyright 2012 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.
 *
 */

/**
 * Sourced from ModelMapper (modelmapper.org)
 *
 * @author Jonathan Halterman
 */
public final class Assert
{
	private Assert()
	{
	}

	public static void isTrue(boolean expression)
	{
		if(!expression)
		{
			throw new IllegalArgumentException();
		}
	}

	public static void isTrue(boolean expression, String errorMessage)
	{
		if(!expression)
		{
			throw new IllegalArgumentException(errorMessage);
		}
	}

	public static  T notNull(T reference, String parameterName)
	{
		if(reference == null)
		{
			throw new IllegalArgumentException(parameterName + " cannot be null");
		}
		return reference;
	}

}