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

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Here is the source code for com.claresco.tinman.json.XapiObjectJson.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.XapiStatement;
import com.claresco.tinman.lrs.XapiActivity;
import com.claresco.tinman.lrs.XapiAgent;
import com.claresco.tinman.lrs.XapiGroup;
import com.claresco.tinman.lrs.XapiObject;
import com.claresco.tinman.lrs.XapiStatementRef;
import com.claresco.tinman.lrs.XapiSubStatement;
import com.google.gson.Gson;
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;

/**
 * XapiObjectDeserializer.java
 *
 *
 *
 *
 *
 * @author rheza
 * on Jan 24, 2014
 * 
 */

public class XapiObjectJson implements JsonDeserializer<XapiObject>, JsonSerializer<XapiObject> {

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

        if (arg0.getObjectType().equals("Agent")) {
            result = (JsonObject) arg2.serialize(arg0, XapiAgent.class);
        } else if (arg0.getObjectType().equals("Group")) {
            result = (JsonObject) arg2.serialize(arg0, XapiGroup.class);
        } else if (arg0.getObjectType().equals("Activity")) {
            result = (JsonObject) arg2.serialize(arg0, XapiActivity.class);
        } else if (arg0.getObjectType().equals("StatementRef")) {
            result = (JsonObject) arg2.serialize(arg0, XapiStatementRef.class);
        } else if (arg0.getObjectType().equals("SubStatement")) {
            result = (JsonObject) arg2.serialize(arg0, XapiSubStatement.class);
        }

        return result;
    }

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

        JsonObject theObjectJson = JsonUtility.convertJsonElementToJsonObject(arg0);

        String theObjectType = JsonUtility.getElementAsString(theObjectJson, "objectType");

        XapiObject theObject = null;

        if (theObjectType != null) {
            if (theObjectType.equals("Agent")) {
                theObject = JsonUtility.delegateDeserialization(arg2, arg0, XapiAgent.class);
            } else if (theObjectType.equals("Group")) {
                theObject = JsonUtility.delegateDeserialization(arg2, arg0, XapiGroup.class);
            } else if (theObjectType.equals("StatementRef")) {
                theObject = JsonUtility.delegateDeserialization(arg2, arg0, XapiStatementRef.class);
            } else if (theObjectType.equals("SubStatement")) {
                theObject = JsonUtility.delegateDeserialization(arg2, arg0, XapiSubStatement.class);
            } else if (theObjectType.equals("Activity")) {
                theObject = JsonUtility.delegateDeserialization(arg2, arg0, XapiActivity.class);
            } else {
                throw new XapiElementNotValidException("There is no object with the type " + theObjectType);
            }
        } else {
            // This should be an activity
            theObject = JsonUtility.delegateDeserialization(arg2, arg0, XapiActivity.class);
        }

        return theObject;
    }

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

        String path1 = "/Users/rheza/Documents/workspace/ClarescoExperienceAPI/src/com/claresco/tinman/json/SubStatementDatabaseTesting.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 {
        }
    }
}