ext-air-db.js
资源名称:ext-3.0.0.zip [点击查看]
上传用户:shuoshiled
上传日期:2018-01-28
资源大小:10124k
文件大小:3k
源码类别:
中间件编程
开发平台:
JavaScript
- /*! * Ext JS Library 3.0.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ Ext.data.AirDB = Ext.extend(Ext.data.SqlDB, {
- open : function(db, cb, scope){
- this.conn = new air.SQLConnection();
- var file = air.File.applicationResourceDirectory.resolve(db);
- this.conn.addEventListener(air.SQLEvent.OPEN, this.onOpen.createDelegate(this, [cb, scope]));
- this.conn.addEventListener(air.SQLEvent.CLOSE, this.onClose.createDelegate(this));
- this.conn.open(file, true);
- },
- close : function(){
- this.conn.close();
- },
- onOpen : function(cb, scope){
- this.openState = true;
- Ext.callback(cb, scope, [this]);
- this.fireEvent('open', this);
- },
- onClose : function(){
- this.fireEvent('close', this);
- },
- onError : function(e, stmt, type, cb, scope){
- Ext.callback(cb, scope, [false, e, stmt]);
- },
- onResult : function(e, stmt, type, cb, scope){
- if(type == 'exec'){
- Ext.callback(cb, scope, [true, e, stmt]);
- }else{
- var r = [];
- var result = stmt.getResult();
- if(result && result.data){
- var len = result.data.length;
- for(var i = 0; i < len; i++) {
- r[r.length] = result.data[i];
- }
- }
- Ext.callback(cb, scope, [r, e, stmt]);
- }
- },
- createStatement : function(type, cb, scope){
- var stmt = new air.SQLStatement();
- stmt.addEventListener(air.SQLErrorEvent.ERROR, this.onError.createDelegate(this, [stmt, type, cb, scope], true));
- stmt.addEventListener(air.SQLEvent.RESULT, this.onResult.createDelegate(this, [stmt, type, cb, scope], true));
- stmt.sqlConnection = this.conn;
- return stmt;
- },
- exec : function(sql, cb, scope){
- var stmt = this.createStatement('exec', cb, scope);
- stmt.text = sql;
- stmt.execute();
- },
- execBy : function(sql, args, cb, scope){
- var stmt = this.createStatement('exec', cb, scope);
- stmt.text = sql;
- this.addParams(stmt, args);
- stmt.execute();
- },
- query : function(sql, cb, scope){
- var stmt = this.createStatement('query', cb, scope);
- stmt.text = sql;
- stmt.execute(this.maxResults);
- },
- queryBy : function(sql, args, cb, scope){
- var stmt = this.createStatement('query', cb, scope);
- stmt.text = sql;
- this.addParams(stmt, args);
- stmt.execute(this.maxResults);
- },
- addParams : function(stmt, args){
- if(!args){ return; }
- for(var key in args){
- if(args.hasOwnProperty(key)){
- if(!isNaN(key)){
- stmt.parameters[parseInt(key)+1] = args[key];
- }else{
- stmt.parameters[':' + key] = args[key];
- }
- }
- }
- return stmt;
- }
- });