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/*
* Copyright 2006-2007 the original author or authors.
*
* 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 net.sf.ezmorph.primitive;
import net.sf.ezmorph.MorphException;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
/**
* Morphs to a boolean.
*
* @author Andres Almiray <aalmiray@users.sourceforge.net>
*/
public final class BooleanMorpher extends AbstractPrimitiveMorpher
{
private boolean defaultValue;
public BooleanMorpher()
{
super();
}
/**
* @param defaultValue return value if the value to be morphed is null
*/
public BooleanMorpher( boolean defaultValue )
{
super( true );
this.defaultValue = defaultValue;
}
public boolean equals( Object obj )
{
if( this == obj ){
return true;
}
if( obj == null ){
return false;
}
if( !(obj instanceof BooleanMorpher) ){
return false;
}
BooleanMorpher other = (BooleanMorpher) obj;
EqualsBuilder builder = new EqualsBuilder();
if( isUseDefault() && other.isUseDefault() ){
builder.append( getDefaultValue(), other.getDefaultValue() );
return builder.isEquals();
}else if( !isUseDefault() && !other.isUseDefault() ){
return builder.isEquals();
}else{
return false;
}
}
/**
* Returns the default value for this Morpher.
*/
public boolean getDefaultValue()
{
return defaultValue;
}
public int hashCode()
{
HashCodeBuilder builder = new HashCodeBuilder();
if( isUseDefault() ){
builder.append( getDefaultValue() );
}
return builder.toHashCode();
}
/**
* Morphs the input object into an output object of the supported type.
*
* @param value The input value to be morphed
* @exception MorphException if conversion cannot be performed successfully
*/
public boolean morph( Object value )
{
if( value == null ){
if( isUseDefault() ){
return defaultValue;
}else{
throw new MorphException( "value is null" );
}
}
if( value instanceof Boolean ){
return ((Boolean) value).booleanValue();
}else if( value instanceof Number ){
if( value instanceof Double
&& (Double.isInfinite( ((Number) value).doubleValue() ) || Double.isNaN( ((Number) value).doubleValue() )) ){
return true;
}
if( value instanceof Float
&& (Float.isInfinite( ((Number) value).floatValue() ) || Float.isNaN( ((Number) value).floatValue() )) ){
return true;
}
long l = ((Number) value).longValue();
return l != 0;
}else{
String s = String.valueOf( value );
if( s.equalsIgnoreCase( "true" ) || s.equalsIgnoreCase( "yes" )
|| s.equalsIgnoreCase( "on" ) ){
return true;
}else if( s.equalsIgnoreCase( "false" ) || s.equalsIgnoreCase( "no" )
|| s.equalsIgnoreCase( "off" ) ){
return false;
}else if( isUseDefault() ){
return defaultValue;
}
}
throw new MorphException( "Can't morph value: " + value );
}
public Class morphsTo()
{
return Boolean.TYPE;
}
}
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