LifecycleMethod.java

package com.googlecode.objectify.impl.translate;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * A lifecycle method that can be executed on a POJO
 *
 * @author Jeff Schnitzer <jeff@infohazard.org>
 */
public class LifecycleMethod
{
	/** */
	private final Method method;

	/** */
	public LifecycleMethod(Method method) {
		this.method = method;
		this.method.setAccessible(true);

		if (method.getParameterTypes().length > 0)
			throw new IllegalArgumentException("Lifecycle methods cannot have parameters:  " + method);
	}

	/** */
	public void execute(Object pojo) {
		try {
			this.method.invoke(pojo);
		}
		catch (IllegalAccessException e) { throw new RuntimeException(e); }
		catch (InvocationTargetException e)
		{
			if (e.getCause() instanceof RuntimeException)
				throw (RuntimeException)e.getCause();
			else
				throw new RuntimeException(e.getCause());
		}
	}
}