com.claresco.tinman.json.XapiActivityJson.java Source code

Introduction

Here is the source code for com.claresco.tinman.json.XapiActivityJson.java

Source

/**
 * ClarescoExperienceAPI
 * Copyright 
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * Please contact Claresco, www.claresco.com, if you have any questions.
 **/

package com.claresco.tinman.json;

import java.io.BufferedReader;
import java.io.FileReader;
import java.lang.reflect.Type;

import com.claresco.tinman.lrs.XapiActivity;
import com.claresco.tinman.lrs.XapiActivityDefinition;
import com.claresco.tinman.lrs.XapiAgent;
import com.claresco.tinman.lrs.XapiInverseFunctionalIdentifier;
import com.claresco.tinman.lrs.XapiStatement;
import com.google.gson.JsonArray;
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.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import com.google.gson.Gson;

/**
 * XapiActivityDeserializer.java
 *
 *
 *
 *
 *
 * @author rheza
 * on Jan 27, 2014
 * 
 */

public class XapiActivityJson implements JsonDeserializer<XapiActivity>, JsonSerializer<XapiActivity> {

    /* (non-Javadoc)
     * @see com.google.gson.JsonSerializer#serialize(java.lang.Object, java.lang.reflect.Type, com.google.gson.JsonSerializationContext)
     */
    @Override
    public JsonElement serialize(XapiActivity arg0, Type arg1, JsonSerializationContext arg2) {
        JsonObject result = new JsonObject();

        result.addProperty("id", arg0.getId().toString());
        result.addProperty("objectType", arg0.getObjectType());

        JsonElement theDefinition = arg2.serialize(arg0.getDefinition(), XapiActivityDefinition.class);
        if (theDefinition != null) {
            result.add("definition", theDefinition);
        }

        return result;
    }

    /* (non-Javadoc)
     * @see com.google.gson.JsonDeserializer#deserialize(com.google.gson.JsonElement, java.lang.reflect.Type, com.google.gson.JsonDeserializationContext)
     */
    @Override
    public XapiActivity deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2)
            throws JsonParseException {

        JsonObject theActivity = JsonUtility.convertJsonElementToJsonObject(arg0);

        String theId;

        // check if id is there, it is required
        if (!JsonUtility.hasElement(theActivity, "id")) {
            throw new XapiBadActivityException("Activity must have an id");
        }

        theId = JsonUtility.getElementAsString(theActivity, "id");

        XapiActivityDefinition theActivityDefinition = JsonUtility.delegateDeserialization(arg2,
                theActivity.get("definition"), XapiActivityDefinition.class);

        return new XapiActivity(theId, theActivityDefinition);
    }

    public static void main(String[] args) {
        Gson gson = JsonUtility.createGson();

        String path1 = "/Users/rheza/Documents/workspace/ClarescoExperienceAPI/src/com/claresco/tinman/json/ActivityDatabaseTesting.json";

        try {
            BufferedReader bf = new BufferedReader(new FileReader(path1));
            XapiStatement s = gson.fromJson(bf, XapiStatement.class);

            System.out.println(gson.toJson(s.getObject()));
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
        }
    }
}