JsonUtils.java

/*******************************************************************************
 * This file is part of the Symfony eclipse plugin.
 *
 * (c) Robert Gruendler <r.gruendler@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 ******************************************************************************/
package com.dubture.symfony.core.util;

import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.php.core.compiler.ast.nodes.ClassDeclaration;
import org.eclipse.php.core.compiler.ast.nodes.NamespaceDeclaration;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import com.dubture.symfony.core.log.Logger;
import com.dubture.symfony.core.model.Bundle;
import com.dubture.symfony.core.model.Service;

/**
 * Encoding / Decoding for json metadata in the SqlIndex.
 *
 *
 *
 * @author Robert Gruendler <r.gruendler@gmail.com>
 *
 */
@SuppressWarnings("restriction")
public class JsonUtils {

    private static JSONParser parser = new JSONParser();

    @SuppressWarnings("unchecked")
    public static String createReference(String elementName, String qualifier, String viewPath, String method) {


        JSONObject data = new JSONObject();
        data.put("elementName", elementName);
        data.put("qualifier", qualifier);
        data.put("viewPath", viewPath);
        data.put("method", method);

        JSONObject header = new JSONObject();
        header.put("type", "reference");
        header.put("data", data);

        return header.toString();


    }

    @SuppressWarnings("unchecked")
    public static String createDefaultSyntheticServices() {

        JSONArray data = new JSONArray();

        JSONObject request = new JSONObject();
        request.put(Service.NAME, "request");
        request.put(Service.CLASS, "Symfony\\Component\\HttpFoundation\\Request");

        data.add(request);
        return data.toString();

    }

    public static String getElementType(String metadata) {

        try {

            JSONObject json = (JSONObject) parser.parse(metadata);
            String type = (String) json.get("type");
            return type;
        } catch (ParseException e) {
            Logger.logException(e);
        }

        return null;
    }


    public static JSONObject getReferenceData(String metadata) {

        try {
            JSONObject header = (JSONObject) parser.parse(metadata);
            return (JSONObject) header.get("data");
        } catch (ParseException e) {

            Logger.logException(e);
        }
        return null;
    }

    @SuppressWarnings("unchecked")
    public static JSONObject createService(String id, String className) {

        JSONObject service = new JSONObject();
        service.put(Service.NAME, id);
        service.put(Service.CLASS, className);
        return service;

    }

    public static JSONArray parseArray(String defaults) {

        try {
            return (JSONArray) parser.parse(defaults);
        } catch (Exception e) {
            Logger.logException(e);
            return new JSONArray();
        }
    }

    @SuppressWarnings("unchecked")
    public static JSONObject createBundle(ISourceModule sourceModule,
            ClassDeclaration classDec, NamespaceDeclaration namespace) {

        JSONObject bundle = new JSONObject();

        bundle.put(Bundle.NAME, classDec.getName());
        bundle.put(Bundle.NAMESPACE, namespace != null ? namespace.getName() : "");
        bundle.put(Bundle.PATH, sourceModule.getPath().removeLastSegments(1).toString());

        return bundle;

    }

    public static Bundle unpackBundle(String metadata) {

        try {
            JSONObject json = (JSONObject) parser.parse(metadata);
            Bundle bundle = new Bundle(null, (String) json.get(Bundle.NAME));
            bundle.setPath((String) json.get(Bundle.PATH));

            return bundle;
        } catch (ParseException e) {

            Logger.logException(e);

        }

        return null;

    }

    @SuppressWarnings("unchecked")
    public static String createScalar(String elementName, String viewPath, String method) {

        JSONObject data = new JSONObject();
        data.put("elementName", elementName);
        data.put("viewPath", viewPath);
        data.put("method", method);

        JSONObject header = new JSONObject();
        header.put("type", "scalar");
        header.put("data", data);

        return header.toString();


    }

    public static JSONObject getScalar(String metadata) {

        try {
            JSONObject header = (JSONObject) parser.parse(metadata);
            return (JSONObject) header.get("data");
        } catch (ParseException e) {

            Logger.logException(e);
        }
        return null;

    }
}