XmlWriter.js
资源名称:ext-3.1.0.zip [点击查看]
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上传日期:2022-08-06
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文件大小:8k
源码类别:
JavaScript
开发平台:
JavaScript
- /*!
- * Ext JS Library 3.1.0
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
- /**
- * @class Ext.data.XmlWriter
- * @extends Ext.data.DataWriter
- * DataWriter extension for writing an array or single {@link Ext.data.Record} object(s) in preparation for executing a remote CRUD action via XML.
- * XmlWriter uses an instance of {@link Ext.XTemplate} for maximum flexibility in defining your own custom XML schema if the default schema is not appropriate for your needs.
- * See the {@link #tpl} configuration-property.
- */
- Ext.data.XmlWriter = function(params) {
- Ext.data.XmlWriter.superclass.constructor.apply(this, arguments);
- // compile the XTemplate for rendering XML documents.
- this.tpl = (typeof(this.tpl) === 'string') ? new Ext.XTemplate(this.tpl).compile() : this.tpl.compile();
- };
- Ext.extend(Ext.data.XmlWriter, Ext.data.DataWriter, {
- /**
- * @cfg {String} documentRoot [xrequest] (Optional) The name of the XML document root-node. <b>Note:</b>
- * this parameter is required </b>only when</b> sending extra {@link Ext.data.Store#baseParams baseParams} to the server
- * during a write-request -- if no baseParams are set, the {@link Ext.data.XmlReader#record} meta-property can
- * suffice as the XML document root-node for write-actions involving just a <b>single record</b>. For requests
- * involving <b>multiple</b> records and <b>NO</b> baseParams, the {@link Ext.data.XmlWriter#root} property can
- * act as the XML document root.
- */
- documentRoot: 'xrequest',
- /**
- * @cfg {Boolean} forceDocumentRoot [false] Set to <tt>true</tt> to force XML documents having a root-node as defined
- * by {@link #documentRoot}, even with no baseParams defined.
- */
- forceDocumentRoot: false,
- /**
- * @cfg {String} root [records] The name of the containing element which will contain the nodes of an write-action involving <b>multiple</b> records. Each
- * xml-record written to the server will be wrapped in an element named after {@link Ext.data.XmlReader#record} property.
- * eg:
- <code><pre>
- <?xml version="1.0" encoding="UTF-8"?>
- <user><first>Barney</first></user>
- </code></pre>
- * However, when <b>multiple</b> records are written in a batch-operation, these records must be wrapped in a containing
- * Element.
- * eg:
- <code><pre>
- <?xml version="1.0" encoding="UTF-8"?>
- <records>
- <first>Barney</first></user>
- <records><first>Barney</first></user>
- </records>
- </code></pre>
- * Defaults to <tt>records</tt>. Do not confuse the nature of this property with that of {@link #documentRoot}
- */
- root: 'records',
- /**
- * @cfg {String} xmlVersion [1.0] The <tt>version</tt> written to header of xml documents.
- <code><pre><?xml version="1.0" encoding="ISO-8859-15"?></pre></code>
- */
- xmlVersion : '1.0',
- /**
- * @cfg {String} xmlEncoding [ISO-8859-15] The <tt>encoding</tt> written to header of xml documents.
- <code><pre><?xml version="1.0" encoding="ISO-8859-15"?></pre></code>
- */
- xmlEncoding: 'ISO-8859-15',
- /**
- * @cfg {String/Ext.XTemplate} tpl The XML template used to render {@link Ext.data.Api#actions write-actions} to your server.
- * <p>One can easily provide his/her own custom {@link Ext.XTemplate#constructor template-definition} if the default does not suffice.</p>
- * <p>Defaults to:</p>
- <code><pre>
- <?xml version="{version}" encoding="{encoding}"?>
- <tpl if="documentRoot"><{documentRoot}>
- <tpl for="baseParams">
- <tpl for=".">
- <{name}>{value}</{name}>
- </tpl>
- </tpl>
- <tpl if="records.length > 1"><{root}>',
- <tpl for="records">
- <{parent.record}>
- <tpl for=".">
- <{name}>{value}</{name}>
- </tpl>
- </{parent.record}>
- </tpl>
- <tpl if="records.length > 1"></{root}></tpl>
- <tpl if="documentRoot"></{documentRoot}></tpl>
- </pre></code>
- * <p>Templates will be called with the following API</p>
- * <ul>
- * <li>{String} version [1.0] The xml version.</li>
- * <li>{String} encoding [ISO-8859-15] The xml encoding.</li>
- * <li>{String/false} documentRoot The XML document root-node name or <tt>false</tt> if not required. See {@link #documentRoot} and {@link #forceDocumentRoot}.</li>
- * <li>{String} record The meta-data parameter defined on your {@link Ext.data.XmlReader#record} configuration represents the name of the xml-tag containing each record.</li>
- * <li>{String} root The meta-data parameter defined by {@link Ext.data.XmlWriter#root} configuration-parameter. Represents the name of the xml root-tag when sending <b>multiple</b> records to the server.</li>
- * <li>{Array} records The records being sent to the server, ie: the subject of the write-action being performed. The records parameter will be always be an array, even when only a single record is being acted upon.
- * Each item within the records array will contain an array of field objects having the following properties:
- * <ul>
- * <li>{String} name The field-name of the record as defined by your {@link Ext.data.Record#create Ext.data.Record definition}. The "mapping" property will be used, otherwise it will match the "name" property. Use this parameter to define the XML tag-name of the property.</li>
- * <li>{Mixed} value The record value of the field enclosed within XML tags specified by name property above.</li>
- * </ul></li>
- * <li>{Array} baseParams. The baseParams as defined upon {@link Ext.data.Store#baseParams}. Note that the baseParams have been converted into an array of [{name : "foo", value: "bar"}, ...] pairs in the same manner as the <b>records</b> parameter above. See {@link #documentRoot} and {@link #forceDocumentRoot}.</li>
- * </ul>
- */
- // Break up encoding here in case it's being included by some kind of page that will parse it (eg. PHP)
- tpl: '<tpl for="."><' + '?xml version="{version}" encoding="{encoding}"?' + '><tpl if="documentRoot"><{documentRoot}><tpl for="baseParams"><tpl for="."><{name}>{value}</{name}</tpl></tpl></tpl><tpl if="records.length>1"><{root}></tpl><tpl for="records"><{parent.record}><tpl for="."><{name}>{value}</{name}></tpl></{parent.record}></tpl><tpl if="records.length>1"></{root}></tpl><tpl if="documentRoot"></{documentRoot}></tpl></tpl>',
- /**
- * XmlWriter implementation of the final stage of a write action.
- * @param {Object} params Transport-proxy's (eg: {@link Ext.Ajax#request}) params-object to write-to.
- * @param {Object} baseParams as defined by {@link Ext.data.Store#baseParams}. The baseParms must be encoded by the extending class, eg: {@link Ext.data.JsonWriter}, {@link Ext.data.XmlWriter}.
- * @param {Object/Object[]} data Data-object representing the compiled Store-recordset.
- */
- render : function(params, baseParams, data) {
- baseParams = this.toArray(baseParams);
- params.xmlData = this.tpl.applyTemplate({
- version: this.xmlVersion,
- encoding: this.xmlEncoding,
- documentRoot: (baseParams.length > 0 || this.forceDocumentRoot === true) ? this.documentRoot : false,
- record: this.meta.record,
- root: this.root,
- baseParams: baseParams,
- records: (Ext.isArray(data[0])) ? data : [data]
- });
- },
- /**
- * createRecord
- * @protected
- * @param {Ext.data.Record} rec
- * @return {Array} Array of <tt>name:value</tt> pairs for attributes of the {@link Ext.data.Record}. See {@link Ext.data.DataWriter#toHash}.
- */
- createRecord : function(rec) {
- return this.toArray(this.toHash(rec));
- },
- /**
- * updateRecord
- * @protected
- * @param {Ext.data.Record} rec
- * @return {Array} Array of {name:value} pairs for attributes of the {@link Ext.data.Record}. See {@link Ext.data.DataWriter#toHash}.
- */
- updateRecord : function(rec) {
- return this.toArray(this.toHash(rec));
- },
- /**
- * destroyRecord
- * @protected
- * @param {Ext.data.Record} rec
- * @return {Array} Array containing a attribute-object (name/value pair) representing the {@link Ext.data.DataReader#idProperty idProperty}.
- */
- destroyRecord : function(rec) {
- var data = {};
- data[this.meta.idProperty] = rec.id;
- return this.toArray(data);
- }
- });