net.sf.gluebooster.java.booster.basic.transformation.CallableByCopying Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of gb-basic Show documentation

Basic classes to support the development of applications. There should be as few dependencies on other frameworks as possible.

The newest version!

package net.sf.gluebooster.java.booster.basic.transformation;

import java.util.Map;


import net.sf.gluebooster.java.booster.essentials.eventsCommands.Callable;
import net.sf.gluebooster.java.booster.essentials.eventsCommands.CallableAbstraction;
import net.sf.gluebooster.java.booster.essentials.meta.HasAttributes;
import net.sf.gluebooster.java.booster.essentials.objects.BoostedObject;
import net.sf.gluebooster.java.booster.essentials.utils.ThrowableBoostUtils;

/**
 * Copies objects
 * 
 * @author cbauer
 *
 */
public class CallableByCopying extends CallableAbstraction {

	/**
	 * The source to copy from
	 */
	private Object from;

	/**
	 * The target to copy to
	 */
	private Object to;

	/**
	 * The keys to copy
	 */
	private Object[] keys;

	public CallableByCopying() {

	}

	/**
	 * 
	 * @param name
	 *            the name of the instance
	 */
	public CallableByCopying(Object name, Object from, Object to, Object... keys) {
		setName(name);
		this.from = from;
		this.to = to;
		this.keys = keys;
	}

	@Override
	public Object callImpl(Object... parameters) throws Exception {

		Object copyFrom = from;
		Object copyTo = to;
		Object[] copyKeys = keys;

		int index = 0;

		if (copyFrom == null) {
			copyFrom = parameters[index++];
		}
		if (copyTo == null) {
			copyTo = parameters[index++];
		}
		if (copyKeys == null) {
			copyKeys = (Object[]) parameters[index++];
		}

		for (Object key : copyKeys) {
			Object value;
			if (copyFrom instanceof Map) {
				value = ((Map) copyFrom).get(key);
			} else if (copyFrom instanceof HasAttributes) {
				value = ((HasAttributes) copyFrom).getAttribute(key);
			} else {
				value = copyFrom;
			}

			if (copyTo instanceof Map) {
				((Map) copyTo).put(key, value);
			} else if (copyTo instanceof HasAttributes) {
				((HasAttributes) copyFrom).setAttribute(key, value);
			} else {
				throw ThrowableBoostUtils.createNotImplementedException("copy to unsupported class ", copyTo.getClass());
			}

		}

		return copyTo;
	}

	public Object getFrom() {
		return from;
	}

	public void setFrom(Object from) {
		this.from = from;
	}

	public Object getTo() {
		return to;
	}

	public void setTo(Object to) {
		this.to = to;
	}

	public Object[] getKeys() {
		return keys;
	}

	public void setKeys(Object[] keys) {
		this.keys = keys;
	}

}