277 lines
No EOL
7 KiB
JavaScript
277 lines
No EOL
7 KiB
JavaScript
/*
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This file is part of Ext JS 3.4
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Copyright (c) 2011-2013 Sencha Inc
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Contact: http://www.sencha.com/contact
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GNU General Public License Usage
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This file may be used under the terms of the GNU General Public License version 3.0 as
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published by the Free Software Foundation and appearing in the file LICENSE included in the
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packaging of this file.
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Please review the following information to ensure the GNU General Public License version 3.0
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requirements will be met: http://www.gnu.org/copyleft/gpl.html.
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If you are unsure which license is appropriate for your use, please contact the sales department
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at http://www.sencha.com/contact.
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Build date: 2013-04-03 15:07:25
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*/
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// Asbtract base class for SqlDB classes
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Ext.data.SqlDB = function(config){
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Ext.apply(this, config);
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Ext.data.SqlDB.superclass.constructor.call(this);
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this.addEvents({
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open : true,
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close: true
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});
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};
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Ext.extend(Ext.data.SqlDB, Ext.util.Observable, {
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maxResults: 10000,
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openState : false,
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// abstract methods
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open : function(file, cb, scope){
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},
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close : function(){
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},
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exec : function(sql, cb, scope){
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},
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execBy : function(sql, args, cb, scope){
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},
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query : function(sql, cb, scope){
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},
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queryBy : function(sql, args, cb, scope){
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},
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// protected/inherited method
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isOpen : function(){
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return this.openState;
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},
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getTable : function(name, keyName){
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return new Ext.data.SqlDB.Table(this, name, keyName);
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},
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createTable : function(o){
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var tableName = o.name,
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keyName = o.key,
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fs = o.fields,
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cb = o.callback,
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scope = o.scope,
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buf = [],
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types = Ext.data.Types;
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if(!(fs instanceof Array)){ // Ext fields collection
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fs = fs.items;
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}
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for(var i = 0, len = fs.length; i < len; i++){
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var f = fs[i],
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s = f.name;
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switch(f.type){
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case types.INT:
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case types.BOOL:
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s += ' INTEGER';
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break;
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case types.FLOAT:
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s += ' REAL';
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break;
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default:
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s += ' TEXT';
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}
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if(f.allowNull === false || f.name == keyName){
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s += ' NOT NULL';
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}
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if(f.name == keyName){
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s += ' PRIMARY KEY';
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}
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if(f.unique === true){
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s += ' UNIQUE';
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}
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buf[buf.length] = s;
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}
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var sql = ['CREATE TABLE IF NOT EXISTS ', tableName, ' (', buf.join(','), ')'].join('');
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this.exec(sql, cb, scope);
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}
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});
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Ext.data.SqlDB.getInstance = function(db, config){
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if(window.htmlControl){ // air
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return new Ext.data.AirDB(config);
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} else { // gears
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return new Ext.data.GearsDB(config);
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}
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};
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Ext.data.SqlDB.Table = function(conn, name, keyName){
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this.conn = conn;
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this.name = name;
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this.keyName = keyName;
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};
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Ext.data.SqlDB.Table.prototype = {
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update : function(o, cb, scope){
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var clause = this.keyName + " = :" + this.keyName;
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this.updateBy(o, clause, {}, cb, scope);
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},
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updateBy : function(o, clause, args, cb, scope){
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var sql = "UPDATE " + this.name + " set ";
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var fs = [], a = [];
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for(var key in o){
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if(o.hasOwnProperty(key)){
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fs[fs.length] = key + ' = ?';
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a[a.length] = o[key];
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}
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}
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for(var key in args){
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if(args.hasOwnProperty(key)){
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a[a.length] = args[key];
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}
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}
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sql = [sql, fs.join(','), ' WHERE ', clause].join('');
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this.conn.execBy(sql, a, cb, scope);
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},
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insert : function(o, cb, scope){
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var sql = "INSERT into " + this.name + " ";
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var fs = [], vs = [], a = [];
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for(var key in o){
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if(o.hasOwnProperty(key)){
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fs[fs.length] = key;
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vs[vs.length] = '?';
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a[a.length] = o[key];
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}
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}
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sql = [sql, '(', fs.join(','), ') VALUES (', vs.join(','), ')'].join('');
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this.conn.execBy(sql, a, cb, scope);
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},
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select : function(clause, cb, scope){
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this.selectBy(clause, null, cb, scope);
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},
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selectBy : function(clause, args, cb, scope){
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var sql = "select * from " + this.name;
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if(clause){
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sql += ' ' + clause;
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}
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args = args || {};
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this.conn.queryBy(sql, args, cb, scope);
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},
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remove : function(clause, cb, scope){
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this.deleteBy(clause, null, cb, scope);
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},
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removeBy : function(clause, args, cb, scope){
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var sql = "delete from " + this.name;
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if(clause){
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sql += ' where ' + clause;
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}
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args = args || {};
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this.conn.execBy(sql, args, cb, scope);
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}
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};
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Ext.data.SqlDB.Proxy = function(conn, table, keyName, store){
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Ext.data.SqlDB.Proxy.superclass.constructor.call(this);
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this.conn = conn;
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this.table = this.conn.getTable(table, keyName);
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this.store = store;
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this.store.on('add', this.onAdd, this);
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this.store.on('update', this.onUpdate, this);
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this.store.on('remove', this.onRemove, this);
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};
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Ext.extend(Ext.data.SqlDB.Proxy, Ext.data.DataProxy, {
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load : function(params, reader, callback, scope, arg){
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if(!this.conn.isOpen()){ // assume that the connection is in the process of opening
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this.conn.on('open', function(){
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this.load(params, reader, callback, scope, arg);
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}, this, {single:true});
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return;
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};
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if(this.fireEvent("beforeload", this, params, reader, callback, scope, arg) !== false){
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var clause = params.where || '';
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var args = params.args || [];
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var group = params.groupBy;
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var sort = params.sort;
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var dir = params.dir;
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if(group || sort){
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clause += ' ORDER BY ';
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if(group && group != sort){
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clause += group + ' ASC, ';
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}
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clause += sort + ' ' + (dir || 'ASC');
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}
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this.table.selectBy(clause, args,
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this.onLoad.createDelegate(this, [{callback:callback, scope:scope, arg:arg, reader: reader}], 0));
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}else{
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callback.call(scope||this, null, arg, false);
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}
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},
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onLoad : function(trans, rs, e, stmt){
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if(rs === false){
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this.fireEvent("loadexception", this, null, trans.arg, e);
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trans.callback.call(trans.scope||window, null, trans.arg, false);
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return;
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}
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var result = trans.reader.readRecords(rs);
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this.fireEvent("load", this, rs, trans.arg);
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trans.callback.call(trans.scope||window, result, trans.arg, true);
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},
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processData : function(o){
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var fs = this.store.fields,
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r = {},
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types = Ext.data.Types;
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for(var key in o){
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var f = fs.key(key), v = o[key];
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if(f){
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if(f.type == types.DATE){
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r[key] = v ? v.format('Y-m-d H:i:s') : '';
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}else if(f.type == types.BOOL){
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r[key] = v ? 1 : 0;
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}else{
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r[key] = v;
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}
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}
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}
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return r;
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},
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onUpdate : function(ds, record){
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var changes = record.getChanges();
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var kn = this.table.keyName;
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this.table.updateBy(this.processData(changes), kn + ' = ?', [record.data[kn]]);
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record.commit(true);
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},
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onAdd : function(ds, records, index){
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for(var i = 0, len = records.length; i < len; i++){
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this.table.insert(this.processData(records[i].data));
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}
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},
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onRemove : function(ds, record, index){
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var kn = this.table.keyName;
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this.table.removeBy(kn + ' = ?', [record.data[kn]]);
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}
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}); |