com.github.mjeanroy.maven.plugins.node.commons.PreConditions Maven / Gradle / Ivy

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Run NPM with maven and plug your script to maven lifecycle.

There is a newer version: 0.10.0

/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Mickael Jeanroy
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.github.mjeanroy.maven.plugins.node.commons;

/**
 * Static PreCondition Utilities.
 */
public final class PreConditions {

	// Ensure non instantiation.
	private PreConditions() {
	}

	/**
	 * Throw new {@link NullPointerException} if first parameter is null
	 * with given exception message.
	 *
	 * @param v1 Value to check.
	 * @param message Message thrown.
	 * @param  Type of first parameter.
	 * @return First parameter if it is not null.
	 */
	public static  T notNull(T v1, String message) {
		if (v1 == null) {
			throw new NullPointerException(message);
		}
		return v1;
	}
}