+++ /dev/null
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- <title>The source code</title>
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- <pre class="prettyprint lang-js">/*!
- * Ext JS Library 3.3.1
- * Copyright(c) 2006-2010 Sencha Inc.
- * licensing@sencha.com
- * http://www.sencha.com/license
- */
-<div id="cls-Ext.data.DataReader"></div>/**
- * @class Ext.data.DataReader
- * Abstract base class for reading structured data from a data source and converting
- * it into an object containing {@link Ext.data.Record} objects and metadata for use
- * by an {@link Ext.data.Store}. This class is intended to be extended and should not
- * be created directly. For existing implementations, see {@link Ext.data.ArrayReader},
- * {@link Ext.data.JsonReader} and {@link Ext.data.XmlReader}.
- * @constructor Create a new DataReader
- * @param {Object} meta Metadata configuration options (implementation-specific).
- * @param {Array/Object} recordType
- * <p>Either an Array of {@link Ext.data.Field Field} definition objects (which
- * will be passed to {@link Ext.data.Record#create}, or a {@link Ext.data.Record Record}
- * constructor created using {@link Ext.data.Record#create}.</p>
- */
-Ext.data.DataReader = function(meta, recordType){
- <div id="prop-Ext.data.DataReader-meta"></div>/**
- * This DataReader's configured metadata as passed to the constructor.
- * @type Mixed
- * @property meta
- */
- this.meta = meta;
- <div id="cfg-Ext.data.DataReader-fields"></div>/**
- * @cfg {Array/Object} fields
- * <p>Either an Array of {@link Ext.data.Field Field} definition objects (which
- * will be passed to {@link Ext.data.Record#create}, or a {@link Ext.data.Record Record}
- * constructor created from {@link Ext.data.Record#create}.</p>
- */
- this.recordType = Ext.isArray(recordType) ?
- Ext.data.Record.create(recordType) : recordType;
-
- // if recordType defined make sure extraction functions are defined
- if (this.recordType){
- this.buildExtractors();
- }
-};
-
-Ext.data.DataReader.prototype = {
- <div id="cfg-Ext.data.DataReader-messageProperty"></div>/**
- * @cfg {String} messageProperty [undefined] Optional name of a property within a server-response that represents a user-feedback message.
- */
- <div id="prop-Ext.data.DataReader-getTotal"></div>/**
- * Abstract method created in extension's buildExtractors impl.
- */
- getTotal: Ext.emptyFn,
- <div id="prop-Ext.data.DataReader-getRoot"></div>/**
- * Abstract method created in extension's buildExtractors impl.
- */
- getRoot: Ext.emptyFn,
- <div id="prop-Ext.data.DataReader-getMessage"></div>/**
- * Abstract method created in extension's buildExtractors impl.
- */
- getMessage: Ext.emptyFn,
- <div id="prop-Ext.data.DataReader-getSuccess"></div>/**
- * Abstract method created in extension's buildExtractors impl.
- */
- getSuccess: Ext.emptyFn,
- <div id="prop-Ext.data.DataReader-getId"></div>/**
- * Abstract method created in extension's buildExtractors impl.
- */
- getId: Ext.emptyFn,
- <div id="prop-Ext.data.DataReader-buildExtractors"></div>/**
- * Abstract method, overridden in DataReader extensions such as {@link Ext.data.JsonReader} and {@link Ext.data.XmlReader}
- */
- buildExtractors : Ext.emptyFn,
- <div id="prop-Ext.data.DataReader-extractValues"></div>/**
- * Abstract method overridden in DataReader extensions such as {@link Ext.data.JsonReader} and {@link Ext.data.XmlReader}
- */
- extractValues : Ext.emptyFn,
-
- <div id="method-Ext.data.DataReader-realize"></div>/**
- * Used for un-phantoming a record after a successful database insert. Sets the records pk along with new data from server.
- * You <b>must</b> return at least the database pk using the idProperty defined in your DataReader configuration. The incoming
- * data from server will be merged with the data in the local record.
- * In addition, you <b>must</b> return record-data from the server in the same order received.
- * Will perform a commit as well, un-marking dirty-fields. Store's "update" event will be suppressed.
- * @param {Record/Record[]} record The phantom record to be realized.
- * @param {Object/Object[]} data The new record data to apply. Must include the primary-key from database defined in idProperty field.
- */
- realize: function(rs, data){
- if (Ext.isArray(rs)) {
- for (var i = rs.length - 1; i >= 0; i--) {
- // recurse
- if (Ext.isArray(data)) {
- this.realize(rs.splice(i,1).shift(), data.splice(i,1).shift());
- }
- else {
- // weird...rs is an array but data isn't?? recurse but just send in the whole invalid data object.
- // the else clause below will detect !this.isData and throw exception.
- this.realize(rs.splice(i,1).shift(), data);
- }
- }
- }
- else {
- // If rs is NOT an array but data IS, see if data contains just 1 record. If so extract it and carry on.
- if (Ext.isArray(data) && data.length == 1) {
- data = data.shift();
- }
- if (!this.isData(data)) {
- // TODO: Let exception-handler choose to commit or not rather than blindly rs.commit() here.
- //rs.commit();
- throw new Ext.data.DataReader.Error('realize', rs);
- }
- rs.phantom = false; // <-- That's what it's all about
- rs._phid = rs.id; // <-- copy phantom-id -> _phid, so we can remap in Store#onCreateRecords
- rs.id = this.getId(data);
- rs.data = data;
-
- rs.commit();
- }
- },
-
- <div id="method-Ext.data.DataReader-update"></div>/**
- * Used for updating a non-phantom or "real" record's data with fresh data from server after remote-save.
- * If returning data from multiple-records after a batch-update, you <b>must</b> return record-data from the server in
- * the same order received. Will perform a commit as well, un-marking dirty-fields. Store's "update" event will be
- * suppressed as the record receives fresh new data-hash
- * @param {Record/Record[]} rs
- * @param {Object/Object[]} data
- */
- update : function(rs, data) {
- if (Ext.isArray(rs)) {
- for (var i=rs.length-1; i >= 0; i--) {
- if (Ext.isArray(data)) {
- this.update(rs.splice(i,1).shift(), data.splice(i,1).shift());
- }
- else {
- // weird...rs is an array but data isn't?? recurse but just send in the whole data object.
- // the else clause below will detect !this.isData and throw exception.
- this.update(rs.splice(i,1).shift(), data);
- }
- }
- }
- else {
- // If rs is NOT an array but data IS, see if data contains just 1 record. If so extract it and carry on.
- if (Ext.isArray(data) && data.length == 1) {
- data = data.shift();
- }
- if (this.isData(data)) {
- rs.data = Ext.apply(rs.data, data);
- }
- rs.commit();
- }
- },
-
- /**
- * returns extracted, type-cast rows of data. Iterates to call #extractValues for each row
- * @param {Object[]/Object} data-root from server response
- * @param {Boolean} returnRecords [false] Set true to return instances of Ext.data.Record
- * @private
- */
- extractData : function(root, returnRecords) {
- // A bit ugly this, too bad the Record's raw data couldn't be saved in a common property named "raw" or something.
- var rawName = (this instanceof Ext.data.JsonReader) ? 'json' : 'node';
-
- var rs = [];
-
- // Had to add Check for XmlReader, #isData returns true if root is an Xml-object. Want to check in order to re-factor
- // #extractData into DataReader base, since the implementations are almost identical for JsonReader, XmlReader
- if (this.isData(root) && !(this instanceof Ext.data.XmlReader)) {
- root = [root];
- }
- var f = this.recordType.prototype.fields,
- fi = f.items,
- fl = f.length,
- rs = [];
- if (returnRecords === true) {
- var Record = this.recordType;
- for (var i = 0; i < root.length; i++) {
- var n = root[i];
- var record = new Record(this.extractValues(n, fi, fl), this.getId(n));
- record[rawName] = n; // <-- There's implementation of ugly bit, setting the raw record-data.
- rs.push(record);
- }
- }
- else {
- for (var i = 0; i < root.length; i++) {
- var data = this.extractValues(root[i], fi, fl);
- data[this.meta.idProperty] = this.getId(root[i]);
- rs.push(data);
- }
- }
- return rs;
- },
-
- <div id="method-Ext.data.DataReader-isData"></div>/**
- * Returns true if the supplied data-hash <b>looks</b> and quacks like data. Checks to see if it has a key
- * corresponding to idProperty defined in your DataReader config containing non-empty pk.
- * @param {Object} data
- * @return {Boolean}
- */
- isData : function(data) {
- return (data && Ext.isObject(data) && !Ext.isEmpty(this.getId(data))) ? true : false;
- },
-
- // private function a store will createSequence upon
- onMetaChange : function(meta){
- delete this.ef;
- this.meta = meta;
- this.recordType = Ext.data.Record.create(meta.fields);
- this.buildExtractors();
- }
-};
-
-<div id="cls-Ext.data.DataReader.Error"></div>/**
- * @class Ext.data.DataReader.Error
- * @extends Ext.Error
- * General error class for Ext.data.DataReader
- */
-Ext.data.DataReader.Error = Ext.extend(Ext.Error, {
- constructor : function(message, arg) {
- this.arg = arg;
- Ext.Error.call(this, message);
- },
- name: 'Ext.data.DataReader'
-});
-Ext.apply(Ext.data.DataReader.Error.prototype, {
- lang : {
- 'update': "#update received invalid data from server. Please see docs for DataReader#update and review your DataReader configuration.",
- 'realize': "#realize was called with invalid remote-data. Please see the docs for DataReader#realize and review your DataReader configuration.",
- 'invalid-response': "#readResponse received an invalid response from the server."
- }
-});
-</pre>
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git.ithinksw.org / extjs.git / blobdiff