text: /*
   * Ext JS Library 2.2
   * Copyright(c) 2006-2008, Ext JS, LLC.
   * licensing@extjs.com
   * 
   * http://extjs.com/license
   */
  
  Ext.data.GearsDB = Ext.extend(Ext.data.SqlDB, {
  	// abstract methods
      open : function(db, cb, scope){
          this.conn = google.gears.factory.create('beta.database', '1.0');
          this.conn.open(db);
          this.openState = true;
  		Ext.callback(cb, scope, [this]);
  		this.fireEvent('open', this);
      },
  
  	close : function(){
          this.conn.close();
          this.fireEvent('close', this);
      },
  
      exec : function(sql, cb, scope){
          this.conn.execute(sql).close();
          Ext.callback(cb, scope, [true]);
      },
  
  	execBy : function(sql, args, cb, scope){
  	    this.conn.execute(sql, args).close();
          Ext.callback(cb, scope, [true]);
      },
  
  	query : function(sql, cb, scope){
          var rs = this.conn.execute(sql);
          var r = this.readResults(rs);
          Ext.callback(cb, scope, [r]);
          return r;
      },
  
  	queryBy : function(sql, args, cb, scope){
          var rs = this.conn.execute(sql, args);
          var r = this.readResults(rs);
          Ext.callback(cb, scope, [r]);
          return r;
      },
  
      readResults : function(rs){
          var r = [];
          if(rs){
              var c = rs.fieldCount();
              // precache field names
              var fs = [];
              for(var i = 0; i < c; i++){
                  fs[i] = rs.fieldName(i);
              }
              // read the data
              while(rs.isValidRow()){
                  var o = {};
                  for(var i = 0; i < c; i++){
                      o[fs[i]] = rs.field(i);
                  }
                  r[r.length] = o;
                  rs.next();
              }
              rs.close();
          }
          return r;
      },
  
      // protected/inherited method
      isOpen : function(){
  		return this.openState;
  	},
  
  	getTable : function(name, keyName){
  		return new Ext.data.SqlDB.Table(this, name, keyName);
  	}
  });
  