| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| package org.apache.cordova; |
| |
| import java.io.File; |
| |
| import org.apache.cordova.api.CallbackContext; |
| import org.apache.cordova.api.CordovaPlugin; |
| import org.json.JSONArray; |
| import org.json.JSONException; |
| import org.json.JSONObject; |
| |
| import android.content.Context; |
| import android.database.Cursor; |
| import android.database.sqlite.*; |
| |
| /** |
| * This class implements the HTML5 database support to work around a bug for |
| * Android 3.0 devices. It is not used for other versions of Android, since |
| * HTML5 database is built in to the browser. |
| */ |
| public class Storage extends CordovaPlugin { |
| |
| // Data Definition Language |
| private static final String ALTER = "alter"; |
| private static final String CREATE = "create"; |
| private static final String DROP = "drop"; |
| private static final String TRUNCATE = "truncate"; |
| |
| SQLiteDatabase myDb = null; // Database object |
| String path = null; // Database path |
| String dbName = null; // Database name |
| |
| /** |
| * Constructor. |
| */ |
| public Storage() { |
| } |
| |
| /** |
| * Executes the request and returns PluginResult. |
| * |
| * @param action |
| * The action to execute. |
| * @param args |
| * JSONArry of arguments for the plugin. |
| * @param callbackContext |
| * The callback context used when calling back into JavaScript. |
| * @return True if the action was valid, false otherwise. |
| */ |
| public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException { |
| if (action.equals("openDatabase")) { |
| this.openDatabase(args.getString(0), args.getString(1), |
| args.getString(2), args.getLong(3)); |
| } else if (action.equals("executeSql")) { |
| String[] s = null; |
| if (args.isNull(1)) { |
| s = new String[0]; |
| } else { |
| JSONArray a = args.getJSONArray(1); |
| int len = a.length(); |
| s = new String[len]; |
| for (int i = 0; i < len; i++) { |
| s[i] = a.getString(i); |
| } |
| } |
| this.executeSql(args.getString(0), s, args.getString(2)); |
| } |
| else { |
| return false; |
| } |
| callbackContext.success(); |
| return true; |
| } |
| |
| /** |
| * Clean up and close database. |
| */ |
| @Override |
| public void onDestroy() { |
| if (this.myDb != null) { |
| this.myDb.close(); |
| this.myDb = null; |
| } |
| } |
| |
| /** |
| * Clean up on navigation/refresh. |
| */ |
| public void onReset() { |
| this.onDestroy(); |
| } |
| |
| // -------------------------------------------------------------------------- |
| // LOCAL METHODS |
| // -------------------------------------------------------------------------- |
| |
| /** |
| * Open database. |
| * |
| * @param db |
| * The name of the database |
| * @param version |
| * The version |
| * @param display_name |
| * The display name |
| * @param size |
| * The size in bytes |
| */ |
| public void openDatabase(String db, String version, String display_name, |
| long size) { |
| |
| // If database is open, then close it |
| if (this.myDb != null) { |
| this.myDb.close(); |
| } |
| |
| // If no database path, generate from application package |
| if (this.path == null) { |
| this.path = this.cordova.getActivity().getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath(); |
| } |
| |
| this.dbName = this.path + File.separator + db + ".db"; |
| |
| /* |
| * What is all this nonsense? Well the separator was incorrect so the db was showing up in the wrong |
| * directory. This bit of code fixes that issue and moves the db to the correct directory. |
| */ |
| File oldDbFile = new File(this.path + File.pathSeparator + db + ".db"); |
| if (oldDbFile.exists()) { |
| File dbPath = new File(this.path); |
| File dbFile = new File(dbName); |
| dbPath.mkdirs(); |
| oldDbFile.renameTo(dbFile); |
| } |
| |
| this.myDb = SQLiteDatabase.openOrCreateDatabase(this.dbName, null); |
| } |
| |
| /** |
| * Execute SQL statement. |
| * |
| * @param query |
| * The SQL query |
| * @param params |
| * Parameters for the query |
| * @param tx_id |
| * Transaction id |
| */ |
| public void executeSql(String query, String[] params, String tx_id) { |
| try { |
| if (isDDL(query)) { |
| this.myDb.execSQL(query); |
| this.webView.sendJavascript("cordova.require('cordova/plugin/android/storage').completeQuery('" + tx_id + "', '');"); |
| } |
| else { |
| Cursor myCursor = this.myDb.rawQuery(query, params); |
| this.processResults(myCursor, tx_id); |
| myCursor.close(); |
| } |
| } |
| catch (SQLiteException ex) { |
| ex.printStackTrace(); |
| System.out.println("Storage.executeSql(): Error=" + ex.getMessage()); |
| |
| // Send error message back to JavaScript |
| this.webView.sendJavascript("cordova.require('cordova/plugin/android/storage').failQuery('" + ex.getMessage() + "','" + tx_id + "');"); |
| } |
| } |
| |
| /** |
| * Checks to see the the query is a Data Definition command |
| * |
| * @param query to be executed |
| * @return true if it is a DDL command, false otherwise |
| */ |
| private boolean isDDL(String query) { |
| String cmd = query.toLowerCase(); |
| if (cmd.startsWith(DROP) || cmd.startsWith(CREATE) || cmd.startsWith(ALTER) || cmd.startsWith(TRUNCATE)) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Process query results. |
| * |
| * @param cur |
| * Cursor into query results |
| * @param tx_id |
| * Transaction id |
| */ |
| public void processResults(Cursor cur, String tx_id) { |
| |
| String result = "[]"; |
| // If query result has rows |
| |
| if (cur.moveToFirst()) { |
| JSONArray fullresult = new JSONArray(); |
| String key = ""; |
| String value = ""; |
| int colCount = cur.getColumnCount(); |
| |
| // Build up JSON result object for each row |
| do { |
| JSONObject row = new JSONObject(); |
| try { |
| for (int i = 0; i < colCount; ++i) { |
| key = cur.getColumnName(i); |
| value = cur.getString(i); |
| row.put(key, value); |
| } |
| fullresult.put(row); |
| |
| } catch (JSONException e) { |
| e.printStackTrace(); |
| } |
| |
| } while (cur.moveToNext()); |
| |
| result = fullresult.toString(); |
| } |
| |
| // Let JavaScript know that there are no more rows |
| this.webView.sendJavascript("cordova.require('cordova/plugin/android/storage').completeQuery('" + tx_id + "', " + result + ");"); |
| } |
| |
| } |