/** * @class Ext.data.Store * @extends Ext.util.Observable *

The Store class encapsulates a client side cache of {@link Ext.data.Record Record} * objects which provide input data for Components such as the {@link Ext.grid.GridPanel GridPanel}, * the {@link Ext.form.ComboBox ComboBox}, or the {@link Ext.DataView DataView}.

*

Retrieving Data

*

A Store object may access a data object using:

*

Reading Data

*

A Store object has no inherent knowledge of the format of the data object (it could be * an Array, XML, or JSON). A Store object uses an appropriate {@link #reader configured implementation} * of a {@link Ext.data.DataReader DataReader} to create {@link Ext.data.Record Record} instances from the data * object.

*

Store Types

*

There are several implementations of Store available which are customized for use with * a specific DataReader implementation. Here is an example using an ArrayStore which implicitly * creates a reader commensurate to an Array data object.

*

var myStore = new Ext.data.ArrayStore({
    fields: ['fullname', 'first'],
    idIndex: 0 // id for each record will be the first element
});
 * 
*

For custom implementations create a basic {@link Ext.data.Store} configured as needed:

*

// create a {@link Ext.data.Record Record} constructor:
var rt = Ext.data.Record.create([
    {name: 'fullname'},
    {name: 'first'}
]);
var myStore = new Ext.data.Store({
    // explicitly create reader
    reader: new Ext.data.ArrayReader(
        {
            idIndex: 0  // id for each record will be the first element
        },
        rt // recordType
    )
});
 * 
*

Load some data into store (note the data object is an array which corresponds to the reader):

*

var myData = [
    [1, 'Fred Flintstone', 'Fred'],  // note that id for the record is the first element
    [2, 'Barney Rubble', 'Barney']
];
myStore.loadData(myData);
 * 
*

Records are cached and made available through accessor functions. An example of adding * a record to the store:

*

var defaultData = {
    fullname: 'Full Name',
    first: 'First Name'
};
var recId = 100; // provide unique id for the record
var r = new myStore.recordType(defaultData, ++recId); // create new record
myStore.{@link #insert}(0, r); // insert a new record into the store (also see {@link #add})
 * 
*

Writing Data

*

And new in Ext version 3, use the new {@link Ext.data.DataWriter DataWriter} to create an automated, Writable Store * along with RESTful features. * @constructor * Creates a new Store. * @param {Object} config A config object containing the objects needed for the Store to access data, * and read the data into Records. * @xtype store */ Ext.data.Store = Ext.extend(Ext.util.Observable, {

/** * @cfg {String} storeId If passed, the id to use to register with the {@link Ext.StoreMgr StoreMgr}. *

Note: if a (deprecated) {@link #id} is specified it will supersede the storeId * assignment.

*/
/** * @cfg {String} url If a {@link #proxy} is not specified the url will be used to * implicitly configure a {@link Ext.data.HttpProxy HttpProxy} if an url is specified. * Typically this option, or the {@link #data} option will be specified. */
/** * @cfg {Boolean/Object} autoLoad If {@link #data} is not specified, and if autoLoad * is true or an Object, this store's {@link #load} method is automatically called * after creation. If the value of autoLoad is an Object, this Object will * be passed to the store's {@link #load} method. */
/** * @cfg {Ext.data.DataProxy} proxy The {@link Ext.data.DataProxy DataProxy} object which provides * access to a data object. See {@link #url}. */
/** * @cfg {Array} data An inline data object readable by the {@link #reader}. * Typically this option, or the {@link #url} option will be specified. */
/** * @cfg {Ext.data.DataReader} reader The {@link Ext.data.DataReader Reader} object which processes the * data object and returns an Array of {@link Ext.data.Record} objects which are cached keyed by their * {@link Ext.data.Record#id id} property. */
/** * @cfg {Ext.data.DataWriter} writer *

The {@link Ext.data.DataWriter Writer} object which processes a record object for being written * to the server-side database.

*

When a writer is installed into a Store the {@link #add}, {@link #remove}, and {@link #update} * events on the store are monitored in order to remotely {@link #createRecords create records}, * {@link #destroyRecord destroy records}, or {@link #updateRecord update records}.

*

The proxy for this store will relay any {@link #writexception} events to this store.

*

Sample implementation: *


var writer = new {@link Ext.data.JsonWriter}({
    encode: true,
    writeAllFields: true // write all fields, not just those that changed
});

// Typical Store collecting the Proxy, Reader and Writer together.
var store = new Ext.data.Store({
    storeId: 'user',
    root: 'records',
    proxy: proxy,
    reader: reader,
    writer: writer,     // <-- plug a DataWriter into the store just as you would a Reader
    paramsAsHash: true,
    autoSave: false    // <-- false to delay executing create, update, destroy requests
                        //     until specifically told to do so.
});
     * 

*/ writer : undefined,
/** * @cfg {Object} baseParams *

An object containing properties which are to be sent as parameters * for every HTTP request.

*

Parameters are encoded as standard HTTP parameters using {@link Ext#urlEncode}.

*

Note: baseParams may be superseded by any params * specified in a {@link #load} request, see {@link #load} * for more details.

* This property may be modified after creation using the {@link #setBaseParam} * method. * @property */
/** * @cfg {Object} sortInfo A config object to specify the sort order in the request of a Store's * {@link #load} operation. Note that for local sorting, the direction property is * case-sensitive. See also {@link #remoteSort} and {@link #paramNames}. * For example:

sortInfo: {
    field: 'fieldName',
    direction: 'ASC' // or 'DESC' (case sensitive for local sorting)
}
*/
/** * @cfg {boolean} remoteSort true if sorting is to be handled by requesting the {@link #proxy Proxy} * to provide a refreshed version of the data object in sorted order, as opposed to sorting the Record cache * in place (defaults to false). *

If remoteSort is true, then clicking on a {@link Ext.grid.Column Grid Column}'s * {@link Ext.grid.Column#header header} causes the current page to be requested from the server appending * the following two parameters to the {@link #load params}:

*/ remoteSort : false,
/** * @cfg {Boolean} autoDestroy true to destroy the store when the component the store is bound * to is destroyed (defaults to false). *

Note: this should be set to true when using stores that are bound to only 1 component.

*/ autoDestroy : false,
/** * @cfg {Boolean} pruneModifiedRecords true to clear all modified record information each time * the store is loaded or when a record is removed (defaults to false). See {@link #getModifiedRecords} * for the accessor method to retrieve the modified records. */ pruneModifiedRecords : false,
/** * Contains the last options object used as the parameter to the {@link #load} method. See {@link #load} * for the details of what this may contain. This may be useful for accessing any params which were used * to load the current Record cache. * @property */ lastOptions : null,
/** * @cfg {Boolean} autoSave *

Defaults to true causing the store to automatically {@link #save} records to * the server when a record is modified (ie: becomes 'dirty'). Specify false to manually call {@link #save} * to send all modifiedRecords to the server.

*

Note: each CRUD action will be sent as a separate request.

*/ autoSave : true,
/** * @cfg {Boolean} batch *

Defaults to true (unless {@link #restful}:true). Multiple * requests for each CRUD action (CREATE, READ, UPDATE and DESTROY) will be combined * and sent as one transaction. Only applies when {@link #autoSave} is set * to false.

*

If Store is RESTful, the DataProxy is also RESTful, and a unique transaction is * generated for each record.

*/ batch : true,
/** * @cfg {Boolean} restful * Defaults to false. Set to true to have the Store and the set * Proxy operate in a RESTful manner. The store will automatically generate GET, POST, * PUT and DELETE requests to the server. The HTTP method used for any given CRUD * action is described in {@link Ext.data.Api#restActions}. For additional information * see {@link Ext.data.DataProxy#restful}. *

Note: if {@link #restful}:true batch will * internally be set to false.

*/ restful: false,
/** * @cfg {Object} paramNames *

An object containing properties which specify the names of the paging and * sorting parameters passed to remote servers when loading blocks of data. By default, this * object takes the following form:


{
    start : 'start',  // The parameter name which specifies the start row
    limit : 'limit',  // The parameter name which specifies number of rows to return
    sort : 'sort',    // The parameter name which specifies the column to sort on
    dir : 'dir'       // The parameter name which specifies the sort direction
}
*

The server must produce the requested data block upon receipt of these parameter names. * If different parameter names are required, this property can be overriden using a configuration * property.

*

A {@link Ext.PagingToolbar PagingToolbar} bound to this Store uses this property to determine * the parameter names to use in its {@link #load requests}. */ paramNames : undefined,

/** * @cfg {Object} defaultParamNames * Provides the default values for the {@link #paramNames} property. To globally modify the parameters * for all stores, this object should be changed on the store prototype. */ defaultParamNames : { start : 'start', limit : 'limit', sort : 'sort', dir : 'dir' }, // private batchKey : '_ext_batch_', constructor : function(config){ this.data = new Ext.util.MixedCollection(false); this.data.getKey = function(o){ return o.id; };
/** * See the {@link #baseParams corresponding configuration option} * for a description of this property. * To modify this property see {@link #setBaseParam}. * @property */ this.baseParams = {}; // temporary removed-records cache this.removed = []; if(config && config.data){ this.inlineData = config.data; delete config.data; } Ext.apply(this, config); this.paramNames = Ext.applyIf(this.paramNames || {}, this.defaultParamNames); if((this.url || this.api) && !this.proxy){ this.proxy = new Ext.data.HttpProxy({url: this.url, api: this.api}); } // If Store is RESTful, so too is the DataProxy if (this.restful === true && this.proxy) { // When operating RESTfully, a unique transaction is generated for each record. // TODO might want to allow implemention of faux REST where batch is possible using RESTful routes only. this.batch = false; Ext.data.Api.restify(this.proxy); } if(this.reader){ // reader passed if(!this.recordType){ this.recordType = this.reader.recordType; } if(this.reader.onMetaChange){ this.reader.onMetaChange = this.reader.onMetaChange.createSequence(this.onMetaChange, this); } if (this.writer) { // writer passed if (this.writer instanceof(Ext.data.DataWriter) === false) { // <-- config-object instead of instance. this.writer = this.buildWriter(this.writer); } this.writer.meta = this.reader.meta; this.pruneModifiedRecords = true; } }
/** * The {@link Ext.data.Record Record} constructor as supplied to (or created by) the * {@link Ext.data.DataReader Reader}. Read-only. *

If the Reader was constructed by passing in an Array of {@link Ext.data.Field} definition objects, * instead of a Record constructor, it will implicitly create a Record constructor from that Array (see * {@link Ext.data.Record}.{@link Ext.data.Record#create create} for additional details).

*

This property may be used to create new Records of the type held in this Store, for example:


    // create the data store
    var store = new Ext.data.ArrayStore({
        autoDestroy: true,
        fields: [
           {name: 'company'},
           {name: 'price', type: 'float'},
           {name: 'change', type: 'float'},
           {name: 'pctChange', type: 'float'},
           {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
        ]
    });
    store.loadData(myData);

    // create the Grid
    var grid = new Ext.grid.EditorGridPanel({
        store: store,
        colModel: new Ext.grid.ColumnModel({
            columns: [
                {id:'company', header: 'Company', width: 160, dataIndex: 'company'},
                {header: 'Price', renderer: 'usMoney', dataIndex: 'price'},
                {header: 'Change', renderer: change, dataIndex: 'change'},
                {header: '% Change', renderer: pctChange, dataIndex: 'pctChange'},
                {header: 'Last Updated', width: 85,
                    renderer: Ext.util.Format.dateRenderer('m/d/Y'),
                    dataIndex: 'lastChange'}
            ],
            defaults: {
                sortable: true,
                width: 75
            }
        }),
        autoExpandColumn: 'company', // match the id specified in the column model
        height:350,
        width:600,
        title:'Array Grid',
        tbar: [{
            text: 'Add Record',
            handler : function(){
                var defaultData = {
                    change: 0,
                    company: 'New Company',
                    lastChange: (new Date()).clearTime(),
                    pctChange: 0,
                    price: 10
                };
                var recId = 3; // provide unique id
                var p = new store.recordType(defaultData, recId); // create new record
                grid.stopEditing();
                store.{@link #insert}(0, p); // insert a new record into the store (also see {@link #add})
                grid.startEditing(0, 0);
            }
        }]
    });
         * 
* @property recordType * @type Function */ if(this.recordType){
/** * A {@link Ext.util.MixedCollection MixedCollection} containing the defined {@link Ext.data.Field Field}s * for the {@link Ext.data.Record Records} stored in this Store. Read-only. * @property fields * @type Ext.util.MixedCollection */ this.fields = this.recordType.prototype.fields; } this.modified = []; this.addEvents(
/** * @event datachanged * Fires when the data cache has changed in a bulk manner (e.g., it has been sorted, filtered, etc.) and a * widget that is using this Store as a Record cache should refresh its view. * @param {Store} this */ 'datachanged',
/** * @event metachange * Fires when this store's reader provides new metadata (fields). This is currently only supported for JsonReaders. * @param {Store} this * @param {Object} meta The JSON metadata */ 'metachange',
/** * @event add * Fires when Records have been {@link #add}ed to the Store * @param {Store} this * @param {Ext.data.Record[]} records The array of Records added * @param {Number} index The index at which the record(s) were added */ 'add',
/** * @event remove * Fires when a Record has been {@link #remove}d from the Store * @param {Store} this * @param {Ext.data.Record} record The Record that was removed * @param {Number} index The index at which the record was removed */ 'remove',
/** * @event update * Fires when a Record has been updated * @param {Store} this * @param {Ext.data.Record} record The Record that was updated * @param {String} operation The update operation being performed. Value may be one of: *

     Ext.data.Record.EDIT
     Ext.data.Record.REJECT
     Ext.data.Record.COMMIT
             * 
*/ 'update',
/** * @event clear * Fires when the data cache has been cleared. * @param {Store} this * @param {Record[]} The records that were cleared. */ 'clear',
/** * @event exception *

Fires if an exception occurs in the Proxy during a remote request. * This event is relayed through the corresponding {@link Ext.data.DataProxy}. * See {@link Ext.data.DataProxy}.{@link Ext.data.DataProxy#exception exception} * for additional details. * @param {misc} misc See {@link Ext.data.DataProxy}.{@link Ext.data.DataProxy#exception exception} * for description. */ 'exception',

/** * @event beforeload * Fires before a request is made for a new data object. If the beforeload handler returns * false the {@link #load} action will be canceled. * @param {Store} this * @param {Object} options The loading options that were specified (see {@link #load} for details) */ 'beforeload',
/** * @event load * Fires after a new set of Records has been loaded. * @param {Store} this * @param {Ext.data.Record[]} records The Records that were loaded * @param {Object} options The loading options that were specified (see {@link #load} for details) */ 'load',
/** * @event loadexception *

This event is deprecated in favor of the catch-all {@link #exception} * event instead.

*

This event is relayed through the corresponding {@link Ext.data.DataProxy}. * See {@link Ext.data.DataProxy}.{@link Ext.data.DataProxy#loadexception loadexception} * for additional details. * @param {misc} misc See {@link Ext.data.DataProxy}.{@link Ext.data.DataProxy#loadexception loadexception} * for description. */ 'loadexception',

/** * @event beforewrite * @param {Ext.data.Store} store * @param {String} action [Ext.data.Api.actions.create|update|destroy] * @param {Record/Array[Record]} rs * @param {Object} options The loading options that were specified. Edit options.params to add Http parameters to the request. (see {@link #save} for details) * @param {Object} arg The callback's arg object passed to the {@link #request} function */ 'beforewrite',
/** * @event write * Fires if the server returns 200 after an Ext.data.Api.actions CRUD action. * Success of the action is determined in the result['successProperty']property (NOTE for RESTful stores, * a simple 20x response is sufficient for the actions "destroy" and "update". The "create" action should should return 200 along with a database pk). * @param {Ext.data.Store} store * @param {String} action [Ext.data.Api.actions.create|update|destroy] * @param {Object} result The 'data' picked-out out of the response for convenience. * @param {Ext.Direct.Transaction} res * @param {Record/Record[]} rs Store's records, the subject(s) of the write-action */ 'write',
/** * @event beforesave * Fires before a save action is called. A save encompasses destroying records, updating records and creating records. * @param {Ext.data.Store} store * @param {Object} data An object containing the data that is to be saved. The object will contain a key for each appropriate action, * with an array of records for each action. */ 'beforesave',
/** * @event save * Fires after a save is completed. A save encompasses destroying records, updating records and creating records. * @param {Ext.data.Store} store * @param {Number} batch The identifier for the batch that was saved. * @param {Object} data An object containing the data that is to be saved. The object will contain a key for each appropriate action, * with an array of records for each action. */ 'save' ); if(this.proxy){ // TODO remove deprecated loadexception with ext-3.0.1 this.relayEvents(this.proxy, ['loadexception', 'exception']); } // With a writer set for the Store, we want to listen to add/remove events to remotely create/destroy records. if (this.writer) { this.on({ scope: this, add: this.createRecords, remove: this.destroyRecord, update: this.updateRecord, clear: this.onClear }); } this.sortToggle = {}; if(this.sortField){ this.setDefaultSort(this.sortField, this.sortDir); }else if(this.sortInfo){ this.setDefaultSort(this.sortInfo.field, this.sortInfo.direction); } Ext.data.Store.superclass.constructor.call(this); if(this.id){ this.storeId = this.id; delete this.id; } if(this.storeId){ Ext.StoreMgr.register(this); } if(this.inlineData){ this.loadData(this.inlineData); delete this.inlineData; }else if(this.autoLoad){ this.load.defer(10, this, [ typeof this.autoLoad == 'object' ? this.autoLoad : undefined]); } // used internally to uniquely identify a batch this.batchCounter = 0; this.batches = {}; }, /** * builds a DataWriter instance when Store constructor is provided with a writer config-object instead of an instace. * @param {Object} config Writer configuration * @return {Ext.data.DataWriter} * @private */ buildWriter : function(config) { var klass = undefined; type = (config.format || 'json').toLowerCase(); switch (type) { case 'json': klass = Ext.data.JsonWriter; break; case 'xml': klass = Ext.data.XmlWriter; break; default: klass = Ext.data.JsonWriter; } return new klass(config); },
/** * Destroys the store. */ destroy : function(){ if(!this.isDestroyed){ if(this.storeId){ Ext.StoreMgr.unregister(this); } this.clearData(); this.data = null; Ext.destroy(this.proxy); this.reader = this.writer = null; this.purgeListeners(); this.isDestroyed = true; } },
/** * Add Records to the Store and fires the {@link #add} event. To add Records * to the store from a remote source use {@link #load}({add:true}). * See also {@link #recordType} and {@link #insert}. * @param {Ext.data.Record[]} records An Array of Ext.data.Record objects * to add to the cache. See {@link #recordType}. */ add : function(records){ records = [].concat(records); if(records.length < 1){ return; } for(var i = 0, len = records.length; i < len; i++){ records[i].join(this); } var index = this.data.length; this.data.addAll(records); if(this.snapshot){ this.snapshot.addAll(records); } this.fireEvent('add', this, records, index); },
/** * (Local sort only) Inserts the passed Record into the Store at the index where it * should go based on the current sort information. * @param {Ext.data.Record} record */ addSorted : function(record){ var index = this.findInsertIndex(record); this.insert(index, record); },
/** * Remove Records from the Store and fires the {@link #remove} event. * @param {Ext.data.Record/Ext.data.Record[]} record The record object or array of records to remove from the cache. */ remove : function(record){ if(Ext.isArray(record)){ Ext.each(record, function(r){ this.remove(r); }, this); } var index = this.data.indexOf(record); if(index > -1){ record.join(null); this.data.removeAt(index); } if(this.pruneModifiedRecords){ this.modified.remove(record); } if(this.snapshot){ this.snapshot.remove(record); } if(index > -1){ this.fireEvent('remove', this, record, index); } },
/** * Remove a Record from the Store at the specified index. Fires the {@link #remove} event. * @param {Number} index The index of the record to remove. */ removeAt : function(index){ this.remove(this.getAt(index)); },
/** * Remove all Records from the Store and fires the {@link #clear} event. * @param {Boolean} silent [false] Defaults to false. Set true to not fire clear event. */ removeAll : function(silent){ var items = []; this.each(function(rec){ items.push(rec); }); this.clearData(); if(this.snapshot){ this.snapshot.clear(); } if(this.pruneModifiedRecords){ this.modified = []; } if (silent !== true) { // <-- prevents write-actions when we just want to clear a store. this.fireEvent('clear', this, items); } }, // private onClear: function(store, records){ Ext.each(records, function(rec, index){ this.destroyRecord(this, rec, index); }, this); },
/** * Inserts Records into the Store at the given index and fires the {@link #add} event. * See also {@link #add} and {@link #addSorted}. * @param {Number} index The start index at which to insert the passed Records. * @param {Ext.data.Record[]} records An Array of Ext.data.Record objects to add to the cache. */ insert : function(index, records){ records = [].concat(records); for(var i = 0, len = records.length; i < len; i++){ this.data.insert(index, records[i]); records[i].join(this); } if(this.snapshot){ this.snapshot.addAll(records); } this.fireEvent('add', this, records, index); },
/** * Get the index within the cache of the passed Record. * @param {Ext.data.Record} record The Ext.data.Record object to find. * @return {Number} The index of the passed Record. Returns -1 if not found. */ indexOf : function(record){ return this.data.indexOf(record); },
/** * Get the index within the cache of the Record with the passed id. * @param {String} id The id of the Record to find. * @return {Number} The index of the Record. Returns -1 if not found. */ indexOfId : function(id){ return this.data.indexOfKey(id); },
/** * Get the Record with the specified id. * @param {String} id The id of the Record to find. * @return {Ext.data.Record} The Record with the passed id. Returns undefined if not found. */ getById : function(id){ return (this.snapshot || this.data).key(id); },
/** * Get the Record at the specified index. * @param {Number} index The index of the Record to find. * @return {Ext.data.Record} The Record at the passed index. Returns undefined if not found. */ getAt : function(index){ return this.data.itemAt(index); },
/** * Returns a range of Records between specified indices. * @param {Number} startIndex (optional) The starting index (defaults to 0) * @param {Number} endIndex (optional) The ending index (defaults to the last Record in the Store) * @return {Ext.data.Record[]} An array of Records */ getRange : function(start, end){ return this.data.getRange(start, end); }, // private storeOptions : function(o){ o = Ext.apply({}, o); delete o.callback; delete o.scope; this.lastOptions = o; }, // private clearData: function(){ this.data.each(function(rec) { rec.join(null); }); this.data.clear(); },
/** *

Loads the Record cache from the configured {@link #proxy} using the configured {@link #reader}.

*

Notes:

* @param {Object} options An object containing properties which control loading options: * @return {Boolean} If the developer provided {@link #beforeload} event handler returns * false, the load call will abort and will return false; otherwise will return true. */ load : function(options) { options = options || {}; this.storeOptions(options); if(this.sortInfo && this.remoteSort){ var pn = this.paramNames; options.params = options.params || {}; options.params[pn.sort] = this.sortInfo.field; options.params[pn.dir] = this.sortInfo.direction; } try { return this.execute('read', null, options); // <-- null represents rs. No rs for load actions. } catch(e) { this.handleException(e); return false; } }, /** * updateRecord Should not be used directly. This method will be called automatically if a Writer is set. * Listens to 'update' event. * @param {Object} store * @param {Object} record * @param {Object} action * @private */ updateRecord : function(store, record, action) { if (action == Ext.data.Record.EDIT && this.autoSave === true && (!record.phantom || (record.phantom && record.isValid()))) { this.save(); } }, /** * Should not be used directly. Store#add will call this automatically if a Writer is set * @param {Object} store * @param {Object} rs * @param {Object} index * @private */ createRecords : function(store, rs, index) { for (var i = 0, len = rs.length; i < len; i++) { if (rs[i].phantom && rs[i].isValid()) { rs[i].markDirty(); // <-- Mark new records dirty this.modified.push(rs[i]); // <-- add to modified } } if (this.autoSave === true) { this.save(); } }, /** * Destroys a record or records. Should not be used directly. It's called by Store#remove if a Writer is set. * @param {Store} this * @param {Ext.data.Record/Ext.data.Record[]} * @param {Number} index * @private */ destroyRecord : function(store, record, index) { if (this.modified.indexOf(record) != -1) { // <-- handled already if @cfg pruneModifiedRecords == true this.modified.remove(record); } if (!record.phantom) { this.removed.push(record); // since the record has already been removed from the store but the server request has not yet been executed, // must keep track of the last known index this record existed. If a server error occurs, the record can be // put back into the store. @see Store#createCallback where the record is returned when response status === false record.lastIndex = index; if (this.autoSave === true) { this.save(); } } }, /** * This method should generally not be used directly. This method is called internally * by {@link #load}, or if a Writer is set will be called automatically when {@link #add}, * {@link #remove}, or {@link #update} events fire. * @param {String} action Action name ('read', 'create', 'update', or 'destroy') * @param {Record/Record[]} rs * @param {Object} options * @throws Error * @private */ execute : function(action, rs, options, /* private */ batch) { // blow up if action not Ext.data.CREATE, READ, UPDATE, DESTROY if (!Ext.data.Api.isAction(action)) { throw new Ext.data.Api.Error('execute', action); } // make sure options has a fresh, new params hash options = Ext.applyIf(options||{}, { params: {} }); if(batch !== undefined){ this.addToBatch(batch); } // have to separate before-events since load has a different signature than create,destroy and save events since load does not // include the rs (record resultset) parameter. Capture return values from the beforeaction into doRequest flag. var doRequest = true; if (action === 'read') { Ext.applyIf(options.params, this.baseParams); doRequest = this.fireEvent('beforeload', this, options); } else { // if Writer is configured as listful, force single-record rs to be [{}] instead of {} // TODO Move listful rendering into DataWriter where the @cfg is defined. Should be easy now. if (this.writer.listful === true && this.restful !== true) { rs = (Ext.isArray(rs)) ? rs : [rs]; } // if rs has just a single record, shift it off so that Writer writes data as '{}' rather than '[{}]' else if (Ext.isArray(rs) && rs.length == 1) { rs = rs.shift(); } // Write the action to options.params if ((doRequest = this.fireEvent('beforewrite', this, action, rs, options)) !== false) { this.writer.apply(options.params, this.baseParams, action, rs); } } if (doRequest !== false) { // Send request to proxy. if (this.writer && this.proxy.url && !this.proxy.restful && !Ext.data.Api.hasUniqueUrl(this.proxy, action)) { options.params.xaction = action; // <-- really old, probaby unecessary. } // Note: Up until this point we've been dealing with 'action' as a key from Ext.data.Api.actions. // We'll flip it now and send the value into DataProxy#request, since it's the value which maps to // the user's configured DataProxy#api // TODO Refactor all Proxies to accept an instance of Ext.data.Request (not yet defined) instead of this looooooong list // of params. This method is an artifact from Ext2. this.proxy.request(Ext.data.Api.actions[action], rs, options.params, this.reader, this.createCallback(action, rs, batch), this, options); } return doRequest; },
/** * Saves all pending changes to the store. If the commensurate Ext.data.Api.actions action is not configured, then * the configured {@link #url} will be used. *
     * change            url
     * ---------------   --------------------
     * removed records   Ext.data.Api.actions.destroy
     * phantom records   Ext.data.Api.actions.create
     * {@link #getModifiedRecords modified records}  Ext.data.Api.actions.update
     * 
* @TODO: Create extensions of Error class and send associated Record with thrown exceptions. * e.g.: Ext.data.DataReader.Error or Ext.data.Error or Ext.data.DataProxy.Error, etc. * @return {Number} batch Returns a number to uniquely identify the "batch" of saves occurring. -1 will be returned * if there are no items to save or the save was cancelled. */ save : function() { if (!this.writer) { throw new Ext.data.Store.Error('writer-undefined'); } var queue = [], len, trans, batch, data = {}; // DESTROY: First check for removed records. Records in this.removed are guaranteed non-phantoms. @see Store#remove if(this.removed.length){ queue.push(['destroy', this.removed]); } // Check for modified records. Use a copy so Store#rejectChanges will work if server returns error. var rs = [].concat(this.getModifiedRecords()); if(rs.length){ // CREATE: Next check for phantoms within rs. splice-off and execute create. var phantoms = []; for(var i = rs.length-1; i >= 0; i--){ if(rs[i].phantom === true){ var rec = rs.splice(i, 1).shift(); if(rec.isValid()){ phantoms.push(rec); } }else if(!rs[i].isValid()){ // <-- while we're here, splice-off any !isValid real records rs.splice(i,1); } } // If we have valid phantoms, create them... if(phantoms.length){ queue.push(['create', phantoms]); } // UPDATE: And finally, if we're still here after splicing-off phantoms and !isValid real records, update the rest... if(rs.length){ queue.push(['update', rs]); } } len = queue.length; if(len){ batch = ++this.batchCounter; for(var i = 0; i < len; ++i){ trans = queue[i]; data[trans[0]] = trans[1]; } if(this.fireEvent('beforesave', this, data) !== false){ for(var i = 0; i < len; ++i){ trans = queue[i]; this.doTransaction(trans[0], trans[1], batch); } return batch; } } return -1; }, // private. Simply wraps call to Store#execute in try/catch. Defers to Store#handleException on error. Loops if batch: false doTransaction : function(action, rs, batch) { function transaction(records) { try{ this.execute(action, records, undefined, batch); }catch (e){ this.handleException(e); } } if(this.batch === false){ for(var i = 0, len = rs.length; i < len; i++){ transaction.call(this, rs[i]); } }else{ transaction.call(this, rs); } }, // private addToBatch : function(batch){ var b = this.batches, key = this.batchKey + batch, o = b[key]; if(!o){ b[key] = o = { id: batch, count: 0, data: {} } } ++o.count; }, removeFromBatch : function(batch, action, data){ var b = this.batches, key = this.batchKey + batch, o = b[key], data, arr; if(o){ arr = o.data[action] || []; o.data[action] = arr.concat(data); if(o.count === 1){ data = o.data; delete b[key]; this.fireEvent('save', this, batch, data); }else{ --o.count; } } }, // @private callback-handler for remote CRUD actions // Do not override -- override loadRecords, onCreateRecords, onDestroyRecords and onUpdateRecords instead. createCallback : function(action, rs, batch) { var actions = Ext.data.Api.actions; return (action == 'read') ? this.loadRecords : function(data, response, success) { // calls: onCreateRecords | onUpdateRecords | onDestroyRecords this['on' + Ext.util.Format.capitalize(action) + 'Records'](success, rs, [].concat(data)); // If success === false here, exception will have been called in DataProxy if (success === true) { this.fireEvent('write', this, action, data, response, rs); } this.removeFromBatch(batch, action, data); }; }, // Clears records from modified array after an exception event. // NOTE: records are left marked dirty. Do we want to commit them even though they were not updated/realized? // TODO remove this method? clearModified : function(rs) { if (Ext.isArray(rs)) { for (var n=rs.length-1;n>=0;n--) { this.modified.splice(this.modified.indexOf(rs[n]), 1); } } else { this.modified.splice(this.modified.indexOf(rs), 1); } }, // remap record ids in MixedCollection after records have been realized. @see Store#onCreateRecords, @see DataReader#realize reMap : function(record) { if (Ext.isArray(record)) { for (var i = 0, len = record.length; i < len; i++) { this.reMap(record[i]); } } else { delete this.data.map[record._phid]; this.data.map[record.id] = record; var index = this.data.keys.indexOf(record._phid); this.data.keys.splice(index, 1, record.id); delete record._phid; } }, // @protected onCreateRecord proxy callback for create action onCreateRecords : function(success, rs, data) { if (success === true) { try { this.reader.realize(rs, data); this.reMap(rs); } catch (e) { this.handleException(e); if (Ext.isArray(rs)) { // Recurse to run back into the try {}. DataReader#realize splices-off the rs until empty. this.onCreateRecords(success, rs, data); } } } }, // @protected, onUpdateRecords proxy callback for update action onUpdateRecords : function(success, rs, data) { if (success === true) { try { this.reader.update(rs, data); } catch (e) { this.handleException(e); if (Ext.isArray(rs)) { // Recurse to run back into the try {}. DataReader#update splices-off the rs until empty. this.onUpdateRecords(success, rs, data); } } } }, // @protected onDestroyRecords proxy callback for destroy action onDestroyRecords : function(success, rs, data) { // splice each rec out of this.removed rs = (rs instanceof Ext.data.Record) ? [rs] : [].concat(rs); for (var i=0,len=rs.length;i=0;i--) { this.insert(rs[i].lastIndex, rs[i]); // <-- lastIndex set in Store#destroyRecord } } }, // protected handleException. Possibly temporary until Ext framework has an exception-handler. handleException : function(e) { // @see core/Error.js Ext.handleError(e); },
/** *

Reloads the Record cache from the configured Proxy using the configured * {@link Ext.data.Reader Reader} and the options from the last load operation * performed.

*

Note: see the Important note in {@link #load}.

* @param {Object} options

(optional) An Object containing * {@link #load loading options} which may override the {@link #lastOptions options} * used in the last {@link #load} operation. See {@link #load} for details * (defaults to null, in which case the {@link #lastOptions} are * used).

*

To add new params to the existing params:


lastOptions = myStore.lastOptions;
Ext.apply(lastOptions.params, {
    myNewParam: true
});
myStore.reload(lastOptions);
     * 
*/ reload : function(options){ this.load(Ext.applyIf(options||{}, this.lastOptions)); }, // private // Called as a callback by the Reader during a load operation. loadRecords : function(o, options, success){ if (this.isDestroyed === true) { return; } if(!o || success === false){ if(success !== false){ this.fireEvent('load', this, [], options); } if(options.callback){ options.callback.call(options.scope || this, [], options, false, o); } return; } var r = o.records, t = o.totalRecords || r.length; if(!options || options.add !== true){ if(this.pruneModifiedRecords){ this.modified = []; } for(var i = 0, len = r.length; i < len; i++){ r[i].join(this); } if(this.snapshot){ this.data = this.snapshot; delete this.snapshot; } this.clearData(); this.data.addAll(r); this.totalLength = t; this.applySort(); this.fireEvent('datachanged', this); }else{ this.totalLength = Math.max(t, this.data.length+r.length); this.add(r); } this.fireEvent('load', this, r, options); if(options.callback){ options.callback.call(options.scope || this, r, options, true); } },
/** * Loads data from a passed data block and fires the {@link #load} event. A {@link Ext.data.Reader Reader} * which understands the format of the data must have been configured in the constructor. * @param {Object} data The data block from which to read the Records. The format of the data expected * is dependent on the type of {@link Ext.data.Reader Reader} that is configured and should correspond to * that {@link Ext.data.Reader Reader}'s {@link Ext.data.Reader#readRecords} parameter. * @param {Boolean} append (Optional) true to append the new Records rather the default to replace * the existing cache. * Note: that Records in a Store are keyed by their {@link Ext.data.Record#id id}, so added Records * with ids which are already present in the Store will replace existing Records. Only Records with * new, unique ids will be added. */ loadData : function(o, append){ var r = this.reader.readRecords(o); this.loadRecords(r, {add: append}, true); },
/** * Gets the number of cached records. *

If using paging, this may not be the total size of the dataset. If the data object * used by the Reader contains the dataset size, then the {@link #getTotalCount} function returns * the dataset size. Note: see the Important note in {@link #load}.

* @return {Number} The number of Records in the Store's cache. */ getCount : function(){ return this.data.length || 0; },
/** * Gets the total number of records in the dataset as returned by the server. *

If using paging, for this to be accurate, the data object used by the {@link #reader Reader} * must contain the dataset size. For remote data sources, the value for this property * (totalProperty for {@link Ext.data.JsonReader JsonReader}, * totalRecords for {@link Ext.data.XmlReader XmlReader}) shall be returned by a query on the server. * Note: see the Important note in {@link #load}.

* @return {Number} The number of Records as specified in the data object passed to the Reader * by the Proxy. *

Note: this value is not updated when changing the contents of the Store locally.

*/ getTotalCount : function(){ return this.totalLength || 0; },
/** * Returns an object describing the current sort state of this Store. * @return {Object} The sort state of the Store. An object with two properties: * See {@link #sortInfo} for additional details. */ getSortState : function(){ return this.sortInfo; }, // private applySort : function(){ if(this.sortInfo && !this.remoteSort){ var s = this.sortInfo, f = s.field; this.sortData(f, s.direction); } }, // private sortData : function(f, direction){ direction = direction || 'ASC'; var st = this.fields.get(f).sortType; var fn = function(r1, r2){ var v1 = st(r1.data[f]), v2 = st(r2.data[f]); return v1 > v2 ? 1 : (v1 < v2 ? -1 : 0); }; this.data.sort(direction, fn); if(this.snapshot && this.snapshot != this.data){ this.snapshot.sort(direction, fn); } },
/** * Sets the default sort column and order to be used by the next {@link #load} operation. * @param {String} fieldName The name of the field to sort by. * @param {String} dir (optional) The sort order, 'ASC' or 'DESC' (case-sensitive, defaults to 'ASC') */ setDefaultSort : function(field, dir){ dir = dir ? dir.toUpperCase() : 'ASC'; this.sortInfo = {field: field, direction: dir}; this.sortToggle[field] = dir; },
/** * Sort the Records. * If remote sorting is used, the sort is performed on the server, and the cache is reloaded. If local * sorting is used, the cache is sorted internally. See also {@link #remoteSort} and {@link #paramNames}. * @param {String} fieldName The name of the field to sort by. * @param {String} dir (optional) The sort order, 'ASC' or 'DESC' (case-sensitive, defaults to 'ASC') */ sort : function(fieldName, dir){ var f = this.fields.get(fieldName); if(!f){ return false; } if(!dir){ if(this.sortInfo && this.sortInfo.field == f.name){ // toggle sort dir dir = (this.sortToggle[f.name] || 'ASC').toggle('ASC', 'DESC'); }else{ dir = f.sortDir; } } var st = (this.sortToggle) ? this.sortToggle[f.name] : null; var si = (this.sortInfo) ? this.sortInfo : null; this.sortToggle[f.name] = dir; this.sortInfo = {field: f.name, direction: dir}; if(!this.remoteSort){ this.applySort(); this.fireEvent('datachanged', this); }else{ if (!this.load(this.lastOptions)) { if (st) { this.sortToggle[f.name] = st; } if (si) { this.sortInfo = si; } } } },
/** * Calls the specified function for each of the {@link Ext.data.Record Records} in the cache. * @param {Function} fn The function to call. The {@link Ext.data.Record Record} is passed as the first parameter. * Returning false aborts and exits the iteration. * @param {Object} scope (optional) The scope (this reference) in which the function is executed. * Defaults to the current {@link Ext.data.Record Record} in the iteration. */ each : function(fn, scope){ this.data.each(fn, scope); },
/** * Gets all {@link Ext.data.Record records} modified since the last commit. Modified records are * persisted across load operations (e.g., during paging). Note: deleted records are not * included. See also {@link #pruneModifiedRecords} and * {@link Ext.data.Record}{@link Ext.data.Record#markDirty markDirty}.. * @return {Ext.data.Record[]} An array of {@link Ext.data.Record Records} containing outstanding * modifications. To obtain modified fields within a modified record see *{@link Ext.data.Record}{@link Ext.data.Record#modified modified}.. */ getModifiedRecords : function(){ return this.modified; }, // private createFilterFn : function(property, value, anyMatch, caseSensitive){ if(Ext.isEmpty(value, false)){ return false; } value = this.data.createValueMatcher(value, anyMatch, caseSensitive); return function(r){ return value.test(r.data[property]); }; },
/** * Sums the value of property for each {@link Ext.data.Record record} between start * and end and returns the result. * @param {String} property A field in each record * @param {Number} start (optional) The record index to start at (defaults to 0) * @param {Number} end (optional) The last record index to include (defaults to length - 1) * @return {Number} The sum */ sum : function(property, start, end){ var rs = this.data.items, v = 0; start = start || 0; end = (end || end === 0) ? end : rs.length-1; for(var i = start; i <= end; i++){ v += (rs[i].data[property] || 0); } return v; },
/** * Filter the {@link Ext.data.Record records} by a specified property. * @param {String} field A field on your records * @param {String/RegExp} value Either a string that the field should begin with, or a RegExp to test * against the field. * @param {Boolean} anyMatch (optional) true to match any part not just the beginning * @param {Boolean} caseSensitive (optional) true for case sensitive comparison */ filter : function(property, value, anyMatch, caseSensitive){ var fn = this.createFilterFn(property, value, anyMatch, caseSensitive); return fn ? this.filterBy(fn) : this.clearFilter(); },
/** * Filter by a function. The specified function will be called for each * Record in this Store. If the function returns true the Record is included, * otherwise it is filtered out. * @param {Function} fn The function to be called. It will be passed the following parameters:
    *
  • record : Ext.data.Record

    The {@link Ext.data.Record record} * to test for filtering. Access field values using {@link Ext.data.Record#get}.

  • *
  • id : Object

    The ID of the Record passed.

  • *
* @param {Object} scope (optional) The scope (this reference) in which the function is executed. Defaults to this Store. */ filterBy : function(fn, scope){ this.snapshot = this.snapshot || this.data; this.data = this.queryBy(fn, scope||this); this.fireEvent('datachanged', this); },
/** * Query the records by a specified property. * @param {String} field A field on your records * @param {String/RegExp} value Either a string that the field * should begin with, or a RegExp to test against the field. * @param {Boolean} anyMatch (optional) True to match any part not just the beginning * @param {Boolean} caseSensitive (optional) True for case sensitive comparison * @return {MixedCollection} Returns an Ext.util.MixedCollection of the matched records */ query : function(property, value, anyMatch, caseSensitive){ var fn = this.createFilterFn(property, value, anyMatch, caseSensitive); return fn ? this.queryBy(fn) : this.data.clone(); },
/** * Query the cached records in this Store using a filtering function. The specified function * will be called with each record in this Store. If the function returns true the record is * included in the results. * @param {Function} fn The function to be called. It will be passed the following parameters:
    *
  • record : Ext.data.Record

    The {@link Ext.data.Record record} * to test for filtering. Access field values using {@link Ext.data.Record#get}.

  • *
  • id : Object

    The ID of the Record passed.

  • *
* @param {Object} scope (optional) The scope (this reference) in which the function is executed. Defaults to this Store. * @return {MixedCollection} Returns an Ext.util.MixedCollection of the matched records **/ queryBy : function(fn, scope){ var data = this.snapshot || this.data; return data.filterBy(fn, scope||this); },
/** * Finds the index of the first matching Record in this store by a specific field value. * @param {String} fieldName The name of the Record field to test. * @param {String/RegExp} value Either a string that the field value * should begin with, or a RegExp to test against the field. * @param {Number} startIndex (optional) The index to start searching at * @param {Boolean} anyMatch (optional) True to match any part of the string, not just the beginning * @param {Boolean} caseSensitive (optional) True for case sensitive comparison * @return {Number} The matched index or -1 */ find : function(property, value, start, anyMatch, caseSensitive){ var fn = this.createFilterFn(property, value, anyMatch, caseSensitive); return fn ? this.data.findIndexBy(fn, null, start) : -1; },
/** * Finds the index of the first matching Record in this store by a specific field value. * @param {String} fieldName The name of the Record field to test. * @param {Mixed} value The value to match the field against. * @param {Number} startIndex (optional) The index to start searching at * @return {Number} The matched index or -1 */ findExact: function(property, value, start){ return this.data.findIndexBy(function(rec){ return rec.get(property) === value; }, this, start); },
/** * Find the index of the first matching Record in this Store by a function. * If the function returns true it is considered a match. * @param {Function} fn The function to be called. It will be passed the following parameters:
    *
  • record : Ext.data.Record

    The {@link Ext.data.Record record} * to test for filtering. Access field values using {@link Ext.data.Record#get}.

  • *
  • id : Object

    The ID of the Record passed.

  • *
* @param {Object} scope (optional) The scope (this reference) in which the function is executed. Defaults to this Store. * @param {Number} startIndex (optional) The index to start searching at * @return {Number} The matched index or -1 */ findBy : function(fn, scope, start){ return this.data.findIndexBy(fn, scope, start); },
/** * Collects unique values for a particular dataIndex from this store. * @param {String} dataIndex The property to collect * @param {Boolean} allowNull (optional) Pass true to allow null, undefined or empty string values * @param {Boolean} bypassFilter (optional) Pass true to collect from all records, even ones which are filtered * @return {Array} An array of the unique values **/ collect : function(dataIndex, allowNull, bypassFilter){ var d = (bypassFilter === true && this.snapshot) ? this.snapshot.items : this.data.items; var v, sv, r = [], l = {}; for(var i = 0, len = d.length; i < len; i++){ v = d[i].data[dataIndex]; sv = String(v); if((allowNull || !Ext.isEmpty(v)) && !l[sv]){ l[sv] = true; r[r.length] = v; } } return r; },
/** * Revert to a view of the Record cache with no filtering applied. * @param {Boolean} suppressEvent If true the filter is cleared silently without firing the * {@link #datachanged} event. */ clearFilter : function(suppressEvent){ if(this.isFiltered()){ this.data = this.snapshot; delete this.snapshot; if(suppressEvent !== true){ this.fireEvent('datachanged', this); } } },
/** * Returns true if this store is currently filtered * @return {Boolean} */ isFiltered : function(){ return this.snapshot && this.snapshot != this.data; }, // private afterEdit : function(record){ if(this.modified.indexOf(record) == -1){ this.modified.push(record); } this.fireEvent('update', this, record, Ext.data.Record.EDIT); }, // private afterReject : function(record){ this.modified.remove(record); this.fireEvent('update', this, record, Ext.data.Record.REJECT); }, // private afterCommit : function(record){ this.modified.remove(record); this.fireEvent('update', this, record, Ext.data.Record.COMMIT); },
/** * Commit all Records with {@link #getModifiedRecords outstanding changes}. To handle updates for changes, * subscribe to the Store's {@link #update update event}, and perform updating when the third parameter is * Ext.data.Record.COMMIT. */ commitChanges : function(){ var m = this.modified.slice(0); this.modified = []; for(var i = 0, len = m.length; i < len; i++){ m[i].commit(); } },
/** * {@link Ext.data.Record#reject Reject} outstanding changes on all {@link #getModifiedRecords modified records}. */ rejectChanges : function(){ var m = this.modified.slice(0); this.modified = []; for(var i = 0, len = m.length; i < len; i++){ m[i].reject(); } var m = this.removed.slice(0).reverse(); this.removed = []; for(var i = 0, len = m.length; i < len; i++){ this.insert(m[i].lastIndex||0, m[i]); m[i].reject(); } }, // private onMetaChange : function(meta){ this.recordType = this.reader.recordType; this.fields = this.recordType.prototype.fields; delete this.snapshot; if(this.reader.meta.sortInfo){ this.sortInfo = this.reader.meta.sortInfo; }else if(this.sortInfo && !this.fields.get(this.sortInfo.field)){ delete this.sortInfo; } if(this.writer){ this.writer.meta = this.reader.meta; } this.modified = []; this.fireEvent('metachange', this, this.reader.meta); }, // private findInsertIndex : function(record){ this.suspendEvents(); var data = this.data.clone(); this.data.add(record); this.applySort(); var index = this.data.indexOf(record); this.data = data; this.resumeEvents(); return index; },
/** * Set the value for a property name in this store's {@link #baseParams}. Usage:


myStore.setBaseParam('foo', {bar:3});
* @param {String} name Name of the property to assign * @param {Mixed} value Value to assign the named property **/ setBaseParam : function (name, value){ this.baseParams = this.baseParams || {}; this.baseParams[name] = value; } }); Ext.reg('store', Ext.data.Store);
/** * @class Ext.data.Store.Error * @extends Ext.Error * Store Error extension. * @param {String} name */ Ext.data.Store.Error = Ext.extend(Ext.Error, { name: 'Ext.data.Store' }); Ext.apply(Ext.data.Store.Error.prototype, { lang: { 'writer-undefined' : 'Attempted to execute a write-action without a DataWriter installed.' } });