/*
* Copyright 2007 Ralf Joachim
*
* 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.castor.cpa.persistence.convertor;
import org.castor.core.util.AbstractProperties;
/**
* Convert <code>String</code> to <code>Boolean</code>.
*
* @author <a href="mailto:ralf DOT joachim AT syscon DOT eu">Ralf Joachim</a>
* @version $Revision: 7134 $ $Date: 2006-04-25 15:08:23 -0600 (Tue, 25 Apr 2006) $
* @since 1.1.3
*/
public final class StringToBoolean extends AbstractTypeConvertor {
//-----------------------------------------------------------------------------------
/** Char value that represents boolean <code>true</code>. */
private char _trueValue = 'T';
/** Char value that represents boolean <code>false</code>. */
private char _falseValue = 'F';
//-----------------------------------------------------------------------------------
/**
* Default constructor.
*/
public StringToBoolean() {
super(String.class, Boolean.class);
}
//-----------------------------------------------------------------------------------
/**
* {@inheritDoc}
*/
public void configure(final AbstractProperties properties) { }
/**
* {@inheritDoc}
*/
public void parameterize(final String parameter) {
if ((parameter == null) || (parameter.length() != 2)) {
_trueValue = 'T';
_falseValue = 'F';
} else {
_trueValue = Character.toUpperCase(parameter.charAt(1));
_falseValue = Character.toUpperCase(parameter.charAt(0));
}
}
//-----------------------------------------------------------------------------------
/**
* {@inheritDoc}
*/
public Object convert(final Object object) {
String val = (String) object;
if (val.length() == 1) {
char c = Character.toUpperCase(val.charAt(0));
if (c == _trueValue) { return Boolean.TRUE; }
if (c == _falseValue) { return Boolean.FALSE; }
}
throw new ClassCastException("Failed to convert string '" + object
+ "' to boolean because it didn't match the expected values '"
+ _trueValue + "'/'" + _falseValue + "' (true/false).");
}
//-----------------------------------------------------------------------------------
}