Java tutorial
package org.xacml4j.v30.marshal.json; /* * #%L * Xacml4J Gson Integration * %% * Copyright (C) 2009 - 2014 Xacml4J.org * %% * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Lesser Public License for more details. * * You should have received a copy of the GNU General Lesser Public * License along with this program. If not, see * <http://www.gnu.org/licenses/lgpl-3.0.html>. * #L% */ import java.lang.reflect.Type; import org.xacml4j.v30.CategoryReference; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonParseException; import com.google.gson.JsonPrimitive; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; final class AttributesReferenceAdapter implements JsonDeserializer<CategoryReference>, JsonSerializer<CategoryReference> { @Override public CategoryReference deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { String referenceId = json.getAsJsonPrimitive().getAsString(); return CategoryReference.builder().id(referenceId).build(); } @Override public JsonElement serialize(CategoryReference src, Type typeOfSrc, JsonSerializationContext context) { return new JsonPrimitive(src.getReferenceId()); } }