org.databene.commons.converter.String2BooleanConverter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of databene-commons Show documentation

'databene commons' is an open source Java library by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

The newest version!

/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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.databene.commons.converter;

import org.databene.commons.ConversionException;
import org.databene.commons.StringUtil;

/**
 * Parses a {@link String} as a {@link Boolean}.
 * Created: 27.02.2010 11:44:57
 * @since 0.5.0
 * @author Volker Bergmann
 */
public class String2BooleanConverter extends ThreadSafeConverter {

	public String2BooleanConverter() {
	    super(String.class, Boolean.class);
    }

	@Override
	public Boolean convert(String sourceValue) throws ConversionException {
	    if (StringUtil.isEmpty(sourceValue))
	    	return null;
	    sourceValue = sourceValue.trim();
	    if ("true".equalsIgnoreCase(sourceValue))
	    	return true;
	    else if ("false".equalsIgnoreCase(sourceValue))
	    	return false;
	    else
	    	throw new IllegalArgumentException("Not a boolean value: " + sourceValue);
	}
	
}