Java tutorial
// *************************************************************************** // * Copyright 2012 Joseph Molnar // * // * 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 com.talvish.tales.serialization.json.translators; import com.google.gson.JsonNull; import com.google.gson.JsonPrimitive; import com.talvish.tales.parts.translators.TranslationException; import com.talvish.tales.parts.translators.Translator; /** * Translator that converts a Number (aka int, long, float, etc) into a Json Primitive * or if null, then {@code JsonNull}. * @author jmolnar * */ public class NumberToJsonPrimitiveTranslator implements Translator { /** * Empty default constructor. */ public NumberToJsonPrimitiveTranslator() { } /** * Translates the received object into a json primitive. * If the object is of the wrong type, a TranslationException will occur. */ @Override public Object translate(Object anObject) { try { if (anObject == null) { return JsonNull.INSTANCE; } else { return new JsonPrimitive((Number) anObject); } } catch (ClassCastException e) { throw new TranslationException(e); } } }