com.github.brunothg.swing2.utils.ClassUtils Maven / Gradle / Ivy

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package com.github.brunothg.swing2.utils;

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

public class ClassUtils {

	private static final Map, Class> wrapperMapping = new MapBuilder, Class>(
			new HashMap, Class>()).put(boolean.class, Boolean.class)
					.put(byte.class, Byte.class)
					.put(char.class, Character.class)
					.put(double.class, Double.class)
					.put(float.class, Float.class).put(int.class, Integer.class)
					.put(long.class, Long.class).put(short.class, Short.class)
					.put(void.class, Void.class).build();

	/**
	 * Test, if assignable could be assigned to
	 * container.

	 * 
	 * 	 * container = assignable;
	 * 
	 * 
	 * @param container
	 *            Class that should be assigned to assignable
	 * @param assignable
	 *            Class to which container should be cast
	 * @return true, if assignable could be assigned to
	 *         container
	 */
	public static boolean isAssignable(Class container,
			Class assignable) {

		return getWrappedClass(container)
				.isAssignableFrom(getWrappedClass(assignable));
	}

	/**
	 * Transform the class to its wrapper class if any exists. Else the class
	 * itself is returned.
	 * 
	 * @param c
	 *            Class from which to get the wrapper class
	 * @return A non primitive class
	 */
	@SuppressWarnings("unchecked")
	private static  Class getWrappedClass(Class c) {
		return (c.isPrimitive()) ? (Class) wrapperMapping.get(c) : c;
	}

}