com.optimizely.ab.config.parser.ProjectConfigGsonDeserializer.java Source code

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Here is the source code for com.optimizely.ab.config.parser.ProjectConfigGsonDeserializer.java

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/**
 *
 *    Copyright 2016, Optimizely
 *
 *    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.optimizely.ab.config.parser;

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 com.google.gson.reflect.TypeToken;

import com.optimizely.ab.config.audience.Audience;
import com.optimizely.ab.config.Attribute;
import com.optimizely.ab.config.EventType;
import com.optimizely.ab.config.Experiment;
import com.optimizely.ab.config.Group;
import com.optimizely.ab.config.ProjectConfig;

import java.lang.reflect.Type;
import java.util.List;

/**
 * GSON {@link ProjectConfig} deserializer to allow the constructor to be used.
 */
public class ProjectConfigGsonDeserializer implements JsonDeserializer<ProjectConfig> {

    @Override
    public ProjectConfig deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        JsonObject jsonObject = json.getAsJsonObject();

        String accountId = jsonObject.get("accountId").getAsString();
        String projectId = jsonObject.get("projectId").getAsString();
        String revision = jsonObject.get("revision").getAsString();
        String version = jsonObject.get("version").getAsString();

        // generic list type tokens
        Type groupsType = new TypeToken<List<Group>>() {
        }.getType();
        Type experimentsType = new TypeToken<List<Experiment>>() {
        }.getType();
        Type attributesType = new TypeToken<List<Attribute>>() {
        }.getType();
        Type eventsType = new TypeToken<List<EventType>>() {
        }.getType();
        Type audienceType = new TypeToken<List<Audience>>() {
        }.getType();

        List<Group> groups = context.deserialize(jsonObject.get("groups").getAsJsonArray(), groupsType);
        List<Experiment> experiments = context.deserialize(jsonObject.get("experiments").getAsJsonArray(),
                experimentsType);
        List<Attribute> attributes = context.deserialize(jsonObject.get("dimensions").getAsJsonArray(),
                attributesType);
        List<EventType> events = context.deserialize(jsonObject.get("events").getAsJsonArray(), eventsType);
        List<Audience> audiences = context.deserialize(jsonObject.get("audiences").getAsJsonArray(), audienceType);

        return new ProjectConfig(accountId, projectId, version, revision, groups, experiments, attributes, events,
                audiences);
    }
}