PackagedUtils.java

/**
 * 
 */
package org.vfny.geoserver.wms.responses.legend.raster;

/**
 * Assorted utilities for this package
 * @author Simone Giannecchini, GeoSolutions SAS
 *
 */
class PackagedUtils {
	
	private PackagedUtils(){
	
	}
	
	/**
	 * Ensures that the provided argument is not <code>null</code>.
	 * <p>
	 * If it <code>null</code> it must throw a {@link NullPointerException}.
	 * 
	 * @param argument argument to check for <code>null</code>.
	 */
	static void ensureNotNull(final Object argument){
		ensureNotNull(argument,"Argument cannot be null");
	}
	
	/**
	 * Ensures that the provided argument is not <code>null</code>.
	 * <p>
	 * If it <code>null</code> it must throw a {@link NullPointerException}.
	 * 
	 * @param argument argument to check for <code>null</code>.
	 * @param message  leading message to print out in case the test fails.
	 */
	static void ensureNotNull(final Object argument,final String message){
		if(message==null)
			throw new NullPointerException("Message cannot be null");
		if(argument==null)
			throw new NullPointerException(message+" cannot be null");
	}

}