
com.feilong.lib.ezmorph.object.StringMorpher Maven / Gradle / Ivy
/*
* 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;
import com.feilong.lib.ezmorph.ObjectMorpher;
/**
* Morphs to a String.
* This morpher is a singleton.
*
* @author Andres Almiray
*/
public final class StringMorpher implements ObjectMorpher{
/** The Constant INSTANCE. */
public static final StringMorpher INSTANCE = new StringMorpher();
/**
* Instantiates a new string morpher.
*/
private StringMorpher(){
}
//---------------------------------------------------------------
/**
* Equals.
*
* @param obj
* the obj
* @return true, if successful
*/
@Override
public boolean equals(Object obj){
return INSTANCE == obj;
}
/**
* Hash code.
*
* @return the int
*/
@Override
public int hashCode(){
return 42 + getClass().hashCode();
}
/**
* Morph.
*
* @param value
* the value
* @return the object
*/
@Override
public Object morph(Object value){
if (value == null){
return null;
}
if (!supports(value.getClass())){
throw new MorphException("Class not supported. " + value.getClass());
}
//---------------------------------------------------------------
if (String.class.isAssignableFrom(value.getClass())){
return value;
}
return String.valueOf(value);
}
//---------------------------------------------------------------
/**
* Morphs to.
*
* @return the class
*/
@Override
public Class> morphsTo(){
return String.class;
}
/**
* Supports.
*
* @param clazz
* the clazz
* @return true, if successful
*/
@Override
public boolean supports(Class> clazz){
return !clazz.isArray();
}
}
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