com.continuuity.loom.codec.json.current.PluginResourceMetaCodec.java Source code

Introduction

Here is the source code for com.continuuity.loom.codec.json.current.PluginResourceMetaCodec.java

Source

/*
 * Copyright 2012-2014, Continuuity, Inc.
 *
 * 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.continuuity.loom.codec.json.current;

import com.continuuity.loom.codec.json.AbstractCodec;
import com.continuuity.loom.provisioner.plugin.ResourceMeta;
import com.continuuity.loom.provisioner.plugin.ResourceStatus;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonSerializationContext;

import java.lang.reflect.Type;

/**
 * Codec for serializing/deserializing {@link com.continuuity.loom.provisioner.plugin.ResourceMeta} objects. Used so
 * that enums are handled correctly.
 */
public class PluginResourceMetaCodec extends AbstractCodec<ResourceMeta> {

    @Override
    public JsonElement serialize(ResourceMeta meta, Type type, JsonSerializationContext context) {
        JsonObject jsonObj = new JsonObject();

        jsonObj.add("name", context.serialize(meta.getName()));
        jsonObj.add("version", context.serialize(meta.getVersion()));
        jsonObj.add("status", context.serialize(meta.getStatus()));

        return jsonObj;
    }

    @Override
    public ResourceMeta deserialize(JsonElement json, Type type, JsonDeserializationContext context)
            throws JsonParseException {
        JsonObject jsonObj = json.getAsJsonObject();

        String name = context.deserialize(jsonObj.get("name"), String.class);
        Integer version = context.deserialize(jsonObj.get("version"), Integer.class);
        ResourceStatus status = context.deserialize(jsonObj.get("status"), ResourceStatus.class);

        return new ResourceMeta(name, version, status);
    }
}