com.feilong.lib.ezmorph.object.BooleanObjectMorpher Maven / Gradle / Ivy

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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.

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/*
 * Copyright (C) 2008 feilong
 *
 * 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 com.feilong.lib.ezmorph.object;

import com.feilong.lib.ezmorph.MorphException;

/**
 * Morphs to a Boolean.
 *
 * @author Andres Almiray
 */
public final class BooleanObjectMorpher extends AbstractObjectMorpher{

    /**
     * Instantiates a new boolean object morpher.
     */
    public BooleanObjectMorpher(){
        super();
    }

    /**
     * Instantiates a new boolean object morpher.
     *
     * @param defaultValue
     *            return value if the value to be morphed is null
     */
    public BooleanObjectMorpher(Boolean defaultValue){
        super(true);
        this.defaultValue = defaultValue;
    }

    /**
     * Morph.
     *
     * @param value
     *            the value
     * @return the object
     */
    @Override
    public Object morph(Object value){
        if (value == null){
            if (isUseDefault()){
                return defaultValue;
            }
            throw new MorphException("value is null");
        }

        if (value instanceof Boolean){
            return value;
        }
        String s = String.valueOf(value);

        if (s.equalsIgnoreCase("true") || s.equalsIgnoreCase("yes") || s.equalsIgnoreCase("on")){
            return Boolean.TRUE;
        }
        if (s.equalsIgnoreCase("false") || s.equalsIgnoreCase("no") || s.equalsIgnoreCase("off")){
            return Boolean.FALSE;
        }
        if (isUseDefault()){
            return defaultValue;
        }

        throw new MorphException("Can't morph value: " + value);
    }

    /**
     * Morphs to.
     *
     * @return the class
     */
    @Override
    public Class morphsTo(){
        return Boolean.class;
    }
}