it.nacios.app.dbloader.DBLoader.java Source code

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Here is the source code for it.nacios.app.dbloader.DBLoader.java

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/*******************************************************************************
* Copyright (c) 2012, 2013 Nacios Technologies.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Apache License Version 2.0
* which accompanies this distribution, and is available at
* http://www.apache.org/licenses/
*
* Contributors:
* Nacios Technologies - initial API and implementation
* Mauro Brasiliano - Nicola Del Gobbo - Vincenzo Villani
*******************************************************************************/

package it.nacios.app.dbloader;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.cordova.api.CallbackContext;
import org.apache.cordova.api.CordovaPlugin;
import org.json.JSONArray;
import org.json.JSONException;

public class DBLoader extends CordovaPlugin {

    private static final String DATA_FOLDER = "/data/data/it.nacios.app/app_database/";

    @Override
    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
        if (action.equals("loadDB")) {
            this.loadDB(args.getString(0), callbackContext);
            return true;
        }
        return false;
    }

    private void loadDB(String dbFileName, CallbackContext callbackContext) {
        InputStream in = null;
        OutputStream out = null;
        if (dbFileName != null && dbFileName.length() > 0) {
            try {
                in = this.webView.getContext().getAssets().open(dbFileName);
                File file = new File(DATA_FOLDER + dbFileName);
                if (file.exists() && file.isFile()) {
                    file.delete();
                    file.createNewFile();
                    out = new FileOutputStream(file);
                    byte[] buffer = new byte[4096];
                    int bytesRead;
                    while ((bytesRead = in.read(buffer)) != -1)
                        out.write(buffer, 0, bytesRead);
                    in.close();
                    out.close();
                    callbackContext.success();
                }

            } catch (IOException e) {
                callbackContext.error("Error: " + e.getMessage());
            }
        } else {
            callbackContext.error("Error: dbFileName not defined");
        }
    }
}