pari: branch 2.0 r4046 - in /branches/2.0/other: ./ sqlite.js

[SVN commits to the Asterisk-GUI project]

Author: pari
Date: Mon Nov  3 11:31:02 2008
New Revision: 4046

URL: http://svn.digium.com/view/asterisk-gui?view=rev&rev=4046
Log:

 A small javascript library to easily access offline databases in Safari



Added:
    branches/2.0/other/
    branches/2.0/other/sqlite.js

Added: branches/2.0/other/sqlite.js
URL: http://svn.digium.com/view/asterisk-gui/branches/2.0/other/sqlite.js?view=auto&rev=4046
==============================================================================
--- branches/2.0/other/sqlite.js (added)
+++ branches/2.0/other/sqlite.js Mon Nov  3 11:31:02 2008
@@ -1,0 +1,127 @@
+//
+// Small library to ease handling offline sqlite databases in Safari
+//
+// Pari Nannapaneni <pari at digium.com>
+//
+// Copyright (C) 2008, Digium, Inc.
+//
+// This program is free software, distributed under the terms of
+// the GNU General Public License Version 2. See the LICENSE file
+// at the top of the source tree.
+//
+
+if (!window.openDatabase) { alert('No Database support! You need Safari (>=3.1) '); return; }
+
+var SQLITE = function(DB){
+	// Usage: var mydb = new SQLITE({ name:'AddressBook', version : '1.0', comment: 'My AddressBook', maxsize: 3200000 });
+	if ( !(this instanceof SQLITE) ) { return new SQLITE(DB) ; }
+	this.DBCONNECTION = null ;
+	try {
+		this.DBCONNECTION = openDatabase(DB.name, DB.version, DB.comment, DB.maxsize);
+		if (!this.DBCONNECTION){
+			alert("Failed to open the database on disk. This is probably because the version was bad or there is not enough space left in this domain's quota");
+			return null;
+		}
+		return true;
+	} catch(err) {
+		return null;
+	}
+};
+
+SQLITE.prototype = {
+	ExecuteQuery : function( SQLOBJ ){
+		// mydb.ExecuteQuery( { query:' select * from AddressBook where email=?' , Arguments:['pari at digium.com'], callBack: function(result){} } ); // Arguments, callBack are Optional
+		if( this.DBCONNECTION === null ) return ;
+
+		if( !SQLOBJ.Arguments ) SQLOBJ.Arguments = [];
+
+		if( !SQLOBJ.hasOwnProperty('callBack') ){
+			this.DBCONNECTION.transaction( function(tx) {
+				tx.executeSql( SQLOBJ.query , SQLOBJ.Arguments , function(){}, function(tx, error){ alert('Error executing Query - ' + error.message); return;} );
+			}) ;
+			return ;
+		}
+
+		this.DBCONNECTION.transaction(
+			function(tx) {
+				tx.executeSql( SQLOBJ.query , SQLOBJ.Arguments , function(tx, result) {
+
+					if( !result.rows.length ){
+						SQLOBJ.callBack(null);
+						return ;
+					}
+					var TMP_ARRAY = [];
+					for (var i = 0, j = result.rows.length; i < j ; ++i) {
+						TMP_ARRAY.push( result.rows.item(i) ) ;
+					}
+					SQLOBJ.callBack(TMP_ARRAY);
+				},
+
+				function(tx, error) {
+					alert('Error executing Query - ' + error.message);
+					return ;
+				});
+			}
+		);
+	},
+	
+	insertIntoTable : function( TABLENAME , OBJ_VALS ){
+		// mydb.insertIntoTable( 'AddressBook' , { name:'someOne', Email:'someone at example.com', Foo: 'bar' } );
+		var tmp_query_fields = [];
+		var tmp_query_questionmarks = [];
+		var tmp_query_values = [];
+
+		for( var i in OBJ_VALS ){
+			if( !OBJ_VALS.hasOwnProperty(i) ) continue;
+
+			tmp_query_fields.push(i);
+			tmp_query_questionmarks.push('?');
+			if( typeof OBJ_VALS[i] == 'string' ){
+				tmp_query_values.push( "'" + OBJ_VALS[i] + "'" );
+			}else{
+				tmp_query_values.push( OBJ_VALS[i] );
+			}
+		}
+
+		tmp_query_fields = tmp_query_fields.join(',');
+		tmp_query_questionmarks = tmp_query_questionmarks.join(', ');
+		this.ExecuteQuery({ query: "INSERT INTO " + TABLENAME + " (" + tmp_query_fields + ") VALUES ("+ tmp_query_questionmarks + ")", Arguments: tmp_query_values });
+	},
+
+
+	createTable : function( TBL ){ // creates a table only if the table does not already exist in database
+		//	mydb.createTable(
+		//		{
+		//			tableName: 'AddressBook',
+		//			createQuery: "CREATE TABLE AddressBook (id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT,email TEXT, age INTEGER)",
+		//			callBack: function(){}
+		//		}
+		//	);
+
+		var me = this ;
+		if( !TBL.hasOwnProperty('callBack')){ TBL.callBack = function(){} }
+		var isCreated = false;
+
+		me.ExecuteQuery({
+			query: "SELECT name FROM sqlite_master WHERE type='table' and name = ? " ,
+			Arguments:[TBL.tableName],
+			callBack: function(result){
+				if( !result || !result.length ){
+					me.ExecuteQuery({
+						query: TBL.createQuery,
+						callBack: function(){
+							isCreated = true;
+							TBL.callBack(isCreated);
+						}
+					});
+
+				}else{ // table already exists
+					TBL.callBack(isCreated);
+					return ;
+				}
+
+			}
+		});
+	}
+};
+