com.kyloth.serleena.synchronization.kylothcloud.inbound.CloudJSONInboundStreamParser.java Source code

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Here is the source code for com.kyloth.serleena.synchronization.kylothcloud.inbound.CloudJSONInboundStreamParser.java

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///////////////////////////////////////////////////////////////////////////////
// 
// This file is part of Serleena.
// 
// The MIT License (MIT)
//
// Copyright (C) 2015 Antonio Cavestro, Gabriele Pozzan, Matteo Lisotto, 
//   Nicola Mometto, Filippo Sestini, Tobia Tesan, Sebastiano Valle.    
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to 
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
///////////////////////////////////////////////////////////////////////////////

/**
 * Name: CloudJSONInboundStreamParser.java
 * Package: com.kyloth.serleena.synchronization.kylothcloud.inbound
 * Author: Tobia Tesan
 *
 * History:
 * Version  Programmer        Changes
 * 1.0.0    Tobia Tesan       Creazione file
 */
package com.kyloth.serleena.synchronization.kylothcloud.inbound;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.stream.JsonReader;
import com.kyloth.serleena.synchronization.InboundStream;
import com.kyloth.serleena.synchronization.InboundStreamParser;
import com.kyloth.serleena.synchronization.kylothcloud.InboundRootEntity;
import com.kyloth.serleena.synchronization.kylothcloud.InboundRootEntityDeserializer;

import java.io.InputStreamReader;

/**
 * Concretizza InboundStreamParser in modo da poter consumare
 * stream JSON in arrivo da KylothCloud.
 *
 * @field stream : CloudJSONInboundStream Lo stream da parsare
 *
 * @use Viene usato da Synchronizer per trasformare i dati in arrivo da KylothCloud, raccolti in un InboundStream da un INetProxy, in un formato intermedio somministrabile a un InboundDumpBuilder.
 * @author Tobia Tesan <tobia.tesan@gmail.com>
 * @version 1.0.0
 *
 */
public class CloudJSONInboundStreamParser implements InboundStreamParser {
    CloudJSONInboundStream stream;

    /**
     * Costruisce un nuovo CloudJSONInboundStreamParser da un InboundStream
     *
     * @param strea Lo stream da parsare
     */
    public CloudJSONInboundStreamParser(InboundStream stream) {
        if (stream instanceof CloudJSONInboundStream) {
            this.stream = (CloudJSONInboundStream) stream;
        } else {
            throw new IllegalArgumentException();
        }
    }

    /**
     * Dato un InboundStream, lo legge e ne restituisce
     * una rappresentazione intermedia agnostica.
     *
     * @return Una collezione di IDataEntity che costituiscono una
     * rappresentazione agnostica dei dati forniti dal servizio.
     */
    @Override
    public InboundRootEntity parse() {
        if (stream instanceof CloudJSONInboundStream) {
            Gson gson = new GsonBuilder()
                    .registerTypeAdapter(InboundRootEntity.class, new InboundRootEntityDeserializer()).create();
            InputStreamReader reader = new InputStreamReader(stream);
            JsonReader jsr = new JsonReader(reader);
            InboundRootEntity root = gson.fromJson(jsr, InboundRootEntity.class);
            return root;
        } else {
            throw new RuntimeException();
        }
    }
}