X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/c930e9176a5a85509c5b0230e2bff5c22a591432..25ef3491bd9ae007ff1fc2b0d7943e6eaaccf775:/docs/source/ext-db.html
diff --git a/docs/source/ext-db.html b/docs/source/ext-db.html
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-
-
- The source code
-
-
-
-
-
-// Asbtract base class for SqlDB classes
-Ext.data.SqlDB = function(config){
- Ext.apply(this, config);
- Ext.data.SqlDB.superclass.constructor.call(this);
-
- this.addEvents({
- open : true,
- close: true
- });
-};
-
-Ext.extend(Ext.data.SqlDB, Ext.util.Observable, {
- maxResults: 10000,
- openState : false,
-
- // abstract methods
- open : function(file, cb, scope){
- },
-
- close : function(){
- },
-
- exec : function(sql, cb, scope){
- },
-
- execBy : function(sql, args, cb, scope){
- },
-
- query : function(sql, cb, scope){
- },
-
- queryBy : function(sql, args, cb, scope){
- },
-
- // protected/inherited method
- isOpen : function(){
- return this.openState;
- },
-
- getTable : function(name, keyName){
- return new Ext.data.SqlDB.Table(this, name, keyName);
- },
-
- createTable : function(o){
- var tableName = o.name;
- var keyName = o.key;
- var fs = o.fields;
- var cb = o.callback;
- var scope = o.scope;
- if(!(fs instanceof Array)){ // Ext fields collection
- fs = fs.items;
- }
- var buf = [];
- for(var i = 0, len = fs.length; i < len; i++){
- var f = fs[i], s = f.name;
- switch(f.type){
- case "int":
- case "bool":
- case "boolean":
- s += ' INTEGER';
- break;
- case "float":
- s += ' REAL';
- break;
- default:
- s += ' TEXT';
- }
- if(f.allowNull === false || f.name == keyName){
- s += ' NOT NULL';
- }
- if(f.name == keyName){
- s += ' PRIMARY KEY';
- }
- if(f.unique === true){
- s += ' UNIQUE';
- }
-
- buf[buf.length] = s;
- }
- var sql = ['CREATE TABLE IF NOT EXISTS ', tableName, ' (', buf.join(','), ')'].join('');
- this.exec(sql, cb, scope);
- }
-});
-
-
-Ext.data.SqlDB.getInstance = function(db, config){
- if(window.htmlControl){ // air
- return new Ext.data.AirDB(config);
- } else { // gears
- return new Ext.data.GearsDB(config);
- }
-};
-
-
-Ext.data.SqlDB.Table = function(conn, name, keyName){
- this.conn = conn;
- this.name = name;
- this.keyName = keyName;
-};
-
-Ext.data.SqlDB.Table.prototype = {
- update : function(o, cb, scope){
- var clause = this.keyName + " = :" + this.keyName;
- this.updateBy(o, clause, {}, cb, scope);
- },
-
- updateBy : function(o, clause, args, cb, scope){
- var sql = "UPDATE " + this.name + " set ";
- var fs = [], a = [];
- for(var key in o){
- if(o.hasOwnProperty(key)){
- fs[fs.length] = key + ' = ?';
- a[a.length] = o[key];
- }
- }
- for(var key in args){
- if(args.hasOwnProperty(key)){
- a[a.length] = args[key];
- }
- }
- sql = [sql, fs.join(','), ' WHERE ', clause].join('');
- this.conn.execBy(sql, a, cb, scope);
- },
-
- insert : function(o, cb, scope){
- var sql = "INSERT into " + this.name + " ";
- var fs = [], vs = [], a = [];
- for(var key in o){
- if(o.hasOwnProperty(key)){
- fs[fs.length] = key;
- vs[vs.length] = '?';
- a[a.length] = o[key];
- }
- }
- sql = [sql, '(', fs.join(','), ') VALUES (', vs.join(','), ')'].join('');
- this.conn.execBy(sql, a, cb, scope);
- },
-
- select : function(clause, cb, scope){
- this.selectBy(clause, null, cb, scope);
- },
-
- selectBy : function(clause, args, cb, scope){
- var sql = "select * from " + this.name;
- if(clause){
- sql += ' ' + clause;
- }
- args = args || {};
- this.conn.queryBy(sql, args, cb, scope);
- },
-
- remove : function(clause, cb, scope){
- this.deleteBy(clause, null, cb, scope);
- },
-
- removeBy : function(clause, args, cb, scope){
- var sql = "delete from " + this.name;
- if(clause){
- sql += ' where ' + clause;
- }
- args = args || {};
- this.conn.execBy(sql, args, cb, scope);
- }
-};
-
-Ext.data.SqlDB.Proxy = function(conn, table, keyName, store){
- Ext.data.SqlDB.Proxy.superclass.constructor.call(this);
- this.conn = conn;
- this.table = this.conn.getTable(table, keyName);
- this.store = store;
-
- this.store.on('add', this.onAdd, this);
- this.store.on('update', this.onUpdate, this);
- this.store.on('remove', this.onRemove, this);
-};
-
-Ext.extend(Ext.data.SqlDB.Proxy, Ext.data.DataProxy, {
- load : function(params, reader, callback, scope, arg){
- if(!this.conn.isOpen()){ // assume that the connection is in the process of opening
- this.conn.on('open', function(){
- this.load(params, reader, callback, scope, arg);
- }, this, {single:true});
- return;
- };
- if(this.fireEvent("beforeload", this, params, reader, callback, scope, arg) !== false){
- var clause = params.where || '';
- var args = params.args || [];
- var group = params.groupBy;
- var sort = params.sort;
- var dir = params.dir;
-
- if(group || sort){
- clause += ' ORDER BY ';
- if(group && group != sort){
- clause += group + ' ASC, ';
- }
- clause += sort + ' ' + (dir || 'ASC');
- }
-
- this.table.selectBy(clause, args,
- this.onLoad.createDelegate(this, [{callback:callback, scope:scope, arg:arg, reader: reader}], 0));
- }else{
- callback.call(scope||this, null, arg, false);
- }
- },
-
- onLoad : function(trans, rs, e, stmt){
- if(rs === false){
- this.fireEvent("loadexception", this, null, trans.arg, e);
- trans.callback.call(trans.scope||window, null, trans.arg, false);
- return;
- }
- var result = trans.reader.readRecords(rs);
- this.fireEvent("load", this, rs, trans.arg);
- trans.callback.call(trans.scope||window, result, trans.arg, true);
- },
-
- processData : function(o){
- var fs = this.store.fields;
- var r = {};
- for(var key in o){
- var f = fs.key(key), v = o[key];
- if(f){
- if(f.type == 'date'){
- r[key] = v ? v.format('Y-m-d H:i:s') : '';
- }else if(f.type == 'boolean'){
- r[key] = v ? 1 : 0;
- }else{
- r[key] = v;
- }
- }
- }
- return r;
- },
-
- onUpdate : function(ds, record){
- var changes = record.getChanges();
- var kn = this.table.keyName;
- this.table.updateBy(this.processData(changes), kn + ' = ?', [record.data[kn]]);
- record.commit(true);
- },
-
- onAdd : function(ds, records, index){
- for(var i = 0, len = records.length; i < len; i++){
- this.table.insert(this.processData(records[i].data));
- }
- },
-
- onRemove : function(ds, record, index){
- var kn = this.table.keyName;
- this.table.removeBy(kn + ' = ?', [record.data[kn]]);
- }
-});
-
-
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