Java tutorial
/* * Copyright 2014 OpenMarket Ltd * * 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.matrix.androidsdk.rest.json; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonParseException; import org.matrix.androidsdk.rest.model.bingrules.Condition; import org.matrix.androidsdk.rest.model.bingrules.ContainsDisplayNameCondition; import org.matrix.androidsdk.rest.model.bingrules.DeviceCondition; import org.matrix.androidsdk.rest.model.bingrules.EventMatchCondition; import org.matrix.androidsdk.rest.model.bingrules.RoomMemberCountCondition; import java.lang.reflect.Type; public class ConditionDeserializer implements JsonDeserializer<Condition> { @Override public Condition deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { JsonObject jsonObject = json.getAsJsonObject(); JsonElement kindElement = jsonObject.get("kind"); if (kindElement != null) { String kind = kindElement.getAsString(); if (Condition.KIND_EVENT_MATCH.equals(kind)) { return context.deserialize(json, EventMatchCondition.class); } if (Condition.KIND_DEVICE.equals(kind)) { return context.deserialize(json, DeviceCondition.class); } if (Condition.KIND_CONTAINS_DISPLAY_NAME.equals(kind)) { return context.deserialize(json, ContainsDisplayNameCondition.class); } if (Condition.KIND_ROOM_MEMBER_COUNT.equals(kind)) { return context.deserialize(json, RoomMemberCountCondition.class); } } return null; } }