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Common and utility library for the Service Grid Server Software and java web services.

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/*
 * $Id: FromToStringTransformer.java 182 2010-10-02 03:16:36Z t-nakaguchi $
 *
 * This is a program for Language Grid Core Node. This combines multiple language resources and provides composite language services.
 * Copyright (C) 2005-2008 NICT Language Grid Project.
 *
 * This program is free software: you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation, either version 2.1 of the License, or (at 
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser 
 * General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this program. If not, see .
 */
package jp.go.nict.langrid.commons.transformer;

import java.lang.reflect.Constructor;
import java.util.Arrays;

/**
 * 
 * 
 * @author Takao Nakaguchi
 * @author $Author: t-nakaguchi $
 * @version $Revision: 182 $
 */
public class FromToStringTransformer implements Transformer{
	/**
	 * 
	 * 
	 */
	public FromToStringTransformer(Class clazz)
	throws IllegalArgumentException
	{
		try{
			this.strArgCtor = clazz.getConstructor(String.class);
		} catch(NoSuchMethodException e){
			throw new IllegalArgumentException(e);
		}
	}

	/**
	 * 
	 * 
	 */
	public FromToStringTransformer(Constructor strArgCtor){
		if(!Arrays.equals(strArgCtor.getParameterTypes(), new Class[]{String.class})){
			throw new IllegalArgumentException(
					"strArgCtor must be constructor with String argument."
					);
		}
		this.strArgCtor = strArgCtor;
	}

	public U transform(Object value) throws TransformationException {
		return TransformerUtil.fromString(strArgCtor, value.toString());
	}

	private Constructor strArgCtor;
}