Java tutorial
/** * Copyright (C) 2014 Esup Portail http://www.esup-portail.org * @Author (C) 2012 Julien Gribonvald <julien.gribonvald@recia.fr> * * 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.esupportail.publisher.domain.enums; import com.google.common.base.Joiner; import com.google.common.collect.Sets; import javax.persistence.AttributeConverter; import javax.persistence.Converter; import java.util.Arrays; import java.util.Set; /** * @author GIP RECIA - Julien Gribonvald 16 juin 2014 */ @Converter public class StringListConverter implements AttributeConverter<Set, String> { @Override public String convertToDatabaseColumn(Set list) { return Joiner.on(',').join(list); } @Override public Set convertToEntityAttribute(String joined) { return Sets.newHashSet(Arrays.asList(joined.split(",")).iterator()); } }