stringconverter.java

来自「apache beanutils开源项目源码」· Java 代码 · 共 64 行

/*
 * Copyright 2001-2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 


package org.apache.commons.beanutils.converters;


import org.apache.commons.beanutils.ConversionException;
import org.apache.commons.beanutils.Converter;


/**
 * <p>Standard {@link Converter} implementation that converts an incoming
 * String into a <code>java.lang.String</code> object, optionally using a
 * default value or throwing a {@link ConversionException} if a conversion
 * error occurs.</p>
 *
 * @author Craig R. McClanahan
 * @version $Revision: 1.5 $ $Date: 2004/02/28 13:18:34 $
 * @since 1.3
 */

public final class StringConverter implements Converter {


    // --------------------------------------------------------- Public Methods


    /**
     * Convert the specified input object into an output object of the
     * specified type.
     *
     * @param type Data type to which this value should be converted
     * @param value The input value to be converted
     *
     * @exception ConversionException if conversion cannot be performed
     *  successfully
     */
    public Object convert(Class type, Object value) {

        if (value == null) {
            return ((String) null);
        } else {
            return (value.toString());
        }

    }


}