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.core.JsonParser; import com.fasterxml.jackson.databind.DeserializationContext; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer; import io.gravitee.common.http.HttpMethod; import io.gravitee.definition.model.Policy; import io.gravitee.definition.model.Rule; import java.io.IOException; import java.util.Arrays; /** * @author David BRASSELY (david.brassely at graviteesource.com) * @author GraviteeSource Team */ public class RuleDeserializer extends StdScalarDeserializer<Rule> { public RuleDeserializer(Class<Rule> vc) { super(vc); } @Override public Rule deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException { JsonNode node = jp.getCodec().readTree(jp); Rule rule = new Rule(); node.fieldNames().forEachRemaining(field -> { JsonNode subNode = node.findValue(field); switch (field) { case "methods": if (subNode != null && subNode.isArray()) { HttpMethod[] methods = new HttpMethod[subNode.size()]; final int[] idx = { 0 }; subNode.elements().forEachRemaining(jsonNode -> { methods[idx[0]++] = HttpMethod.valueOf(jsonNode.asText().toUpperCase()); }); rule.getMethods().addAll(Arrays.asList(methods)); } break; case "description": if (subNode != null) { rule.setDescription(subNode.asText()); } break; case "enabled": if (subNode != null) { rule.setEnabled(subNode.asBoolean(true)); } break; default: // We are in the case of a policy Policy policy = new Policy(); policy.setName(field); policy.setConfiguration(subNode.toString()); rule.setPolicy(policy); break; } }); if (rule.getMethods().isEmpty()) { rule.getMethods() .addAll(Arrays.asList(HttpMethod.CONNECT, HttpMethod.DELETE, HttpMethod.GET, HttpMethod.HEAD, HttpMethod.OPTIONS, HttpMethod.PATCH, HttpMethod.POST, HttpMethod.PUT, HttpMethod.TRACE)); } return rule; } }