org.cmg.jresp.json.TemplateDeserializer.java Source code

Introduction

Here is the source code for org.cmg.jresp.json.TemplateDeserializer.java

Source

/**
 * Copyright (c) 2012 Concurrency and Mobility Group.
 * Universita' di Firenze
 *   
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *      Michele Loreti
 */
package org.cmg.jresp.json;

import java.lang.reflect.Type;

import org.cmg.jresp.knowledge.Template;
import org.cmg.jresp.knowledge.TemplateField;

import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;

/**
 * This class is used to deserialize a {@link Template} from a
 * {@link JsonElement} (see {@link JsonDeserializer}).
 * 
 * @author Michele Loreti
 *
 */
public class TemplateDeserializer implements JsonDeserializer<Template> {

    @Override
    public Template deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        if (!json.isJsonArray()) {
            throw new JsonParseException("Unexpected JsonElement!");
        }
        JsonArray jsa = (JsonArray) json;
        TemplateField[] data = new TemplateField[jsa.size()];
        for (int i = 0; i < jsa.size(); i++) {
            try {
                data[i] = (TemplateField) SCELJsonUtil.objectFromJson(jsa.get(i), context);
            } catch (ClassCastException e) {
                throw new JsonParseException(e);
            }
        }
        return new Template(data);
    }

}