Java tutorial
/** * Copyright (C) 2015 The Gravitee team (http://gravitee.io) * * 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 io.gravitee.definition.jackson.datatype.api.deser; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer; /** * @author David BRASSELY (david.brassely at graviteesource.com) * @author GraviteeSource Team */ public abstract class AbstractStdScalarDeserializer<T> extends StdScalarDeserializer<T> { protected AbstractStdScalarDeserializer(Class<?> vc) { super(vc); } protected String readStringValue(JsonNode rootNode, String fieldName) { return readStringValue(rootNode, fieldName, null); } protected String readStringValue(JsonNode rootNode, String fieldName, String defaultValue) { JsonNode fieldNode = rootNode.get(fieldName); if (fieldNode != null) { return fieldNode.asText(); } return defaultValue; } }