/*
* Copyright 2004, 2005, 2006 Odysseus Software GmbH
*
* 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 de.odysseus.calyxo.forms.convert;
import java.text.ParseException;
/**
* Boolean converter.
*
* @author Christoph Beck
*/
public class BooleanConverter extends SimpleConverter {
private String trueString;
private String falseString;
private Boolean parsedNullOrEmpty;
/**
* Default constructor.
*/
public BooleanConverter() {
this("true", "false");
}
/**
* Constructor.
*/
public BooleanConverter(String trueValue, String falseValue) {
this.trueString = trueValue;
this.falseString = falseValue;
}
/**
* Format method.
*/
public String format(Object value) {
if (value == null) {
return null;
}
return ((Boolean) value).booleanValue() ? trueString : falseString;
}
/**
* Get the falseValue property
*/
public String getFalseString() {
return falseString;
}
/**
* Get the default property
*/
public Boolean getDefault() {
return parsedNullOrEmpty;
}
/**
* Get the trueValue property
*/
public String getTrueString() {
return trueString;
}
/**
* Parse method.
*/
public Object parse(String value) throws ParseException {
if (value == null || value.length() == 0)
return parsedNullOrEmpty;
if (value.equals(trueString))
return Boolean.TRUE;
if (value.equals(falseString))
return Boolean.FALSE;
throw new ParseException("Cannot parse: " + value, 0);
}
/**
* Set the falseValue property
*/
public void setFalseString(String newFalseString) {
falseString = newFalseString;
}
/**
* Set the default property
*/
public void setDefault(Boolean value) {
parsedNullOrEmpty = value;
}
/**
* Set the trueValue property
*/
public void setTrueString(String newTrueString) {
trueString = newTrueString;
}
/**
* This converter is thread-save, so answer <code>true</code>
*/
public boolean isSharable() {
return true;
}
}