/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource 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 br.com.caelum.vraptor.converter;
import static com.google.common.base.Strings.isNullOrEmpty;
import javax.annotation.Priority;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Alternative;
import javax.interceptor.Interceptor;
import br.com.caelum.vraptor.Convert;
/**
* A no-op converter
*
* @author Lucas Cavalcanti
* @since 3.3.0
*
*/
@Convert(String.class)
@ApplicationScoped
@Alternative
@Priority(Interceptor.Priority.LIBRARY_BEFORE)
public class StringConverter implements Converter<String> {
@Override
public String convert(String value, Class<? extends String> type) {
if (isNullOrEmpty(value)) {
return null;
}
return value;
}
}