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/*!
* Ext JS Library 3.2.0
* Copyright(c) 2006-2010 Ext JS, Inc.
* 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>
&lt;?xml version="1.0" encoding="UTF-8"?>
&lt;user>&lt;first>Barney&lt;/first>&lt;/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>
&lt;?xml version="1.0" encoding="UTF-8"?>
&lt;records>
&lt;first>Barney&lt;/first>&lt;/user>
&lt;records>&lt;first>Barney&lt;/first>&lt;/user>
&lt;/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>&lt;?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>&lt;?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>
&lt;?xml version="{version}" encoding="{encoding}"?>
&lt;tpl if="documentRoot">&lt;{documentRoot}>
&lt;tpl for="baseParams">
&lt;tpl for=".">
&lt;{name}>{value}&lt;/{name}>
&lt;/tpl>
&lt;/tpl>
&lt;tpl if="records.length &gt; 1">&lt;{root}>',
&lt;tpl for="records">
&lt;{parent.record}>
&lt;tpl for=".">
&lt;{name}>{value}&lt;/{name}>
&lt;/tpl>
&lt;/{parent.record}>
&lt;/tpl>
&lt;tpl if="records.length &gt; 1">&lt;/{root}>&lt;/tpl>
&lt;tpl if="documentRoot">&lt;/{documentRoot}>&lt;/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>
*/
// Encoding the ? here in case it's being included by some kind of page that will parse it (eg. PHP)
tpl: '<tpl for="."><\u003fxml version="{version}" encoding="{encoding}"\u003f><tpl if="documentRoot"><{documentRoot}><tpl for="baseParams"><tpl for="."><{name}>{value}</{name}</tpl></tpl></tpl><tpl if="records.length&gt;1"><{root}></tpl><tpl for="records"><{parent.record}><tpl for="."><{name}>{value}</{name}></tpl></{parent.record}></tpl><tpl if="records.length&gt;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);
}
});
/**
* @class Ext.data.XmlReader
* @extends Ext.data.DataReader
* <p>Data reader class to create an Array of {@link Ext.data.Record} objects from an XML document
* based on mappings in a provided {@link Ext.data.Record} constructor.</p>
* <p><b>Note</b>: that in order for the browser to parse a returned XML document, the Content-Type
* header in the HTTP response must be set to "text/xml" or "application/xml".</p>
* <p>Example code:</p>
* <pre><code>
var Employee = Ext.data.Record.create([
{name: 'name', mapping: 'name'}, // "mapping" property not needed if it is the same as "name"
{name: 'occupation'} // This field will use "occupation" as the mapping.
]);
var myReader = new Ext.data.XmlReader({
totalProperty: "results", // The element which contains the total dataset size (optional)
record: "row", // The repeated element which contains row information
idProperty: "id" // The element within the row that provides an ID for the record (optional)
messageProperty: "msg" // The element within the response that provides a user-feedback message (optional)
}, Employee);
</code></pre>
* <p>
* This would consume an XML file like this:
* <pre><code>
&lt;?xml version="1.0" encoding="UTF-8"?>
&lt;dataset>
&lt;results>2&lt;/results>
&lt;row>
&lt;id>1&lt;/id>
&lt;name>Bill&lt;/name>
&lt;occupation>Gardener&lt;/occupation>
&lt;/row>
&lt;row>
&lt;id>2&lt;/id>
&lt;name>Ben&lt;/name>
&lt;occupation>Horticulturalist&lt;/occupation>
&lt;/row>
&lt;/dataset>
</code></pre>
* @cfg {String} totalProperty The DomQuery path from which to retrieve the total number of records
* in the dataset. This is only needed if the whole dataset is not passed in one go, but is being
* paged from the remote server.
* @cfg {String} record The DomQuery path to the repeated element which contains record information.
* @cfg {String} record The DomQuery path to the repeated element which contains record information.
* @cfg {String} successProperty The DomQuery path to the success attribute used by forms.
* @cfg {String} idPath The DomQuery path relative from the record element to the element that contains
* a record identifier value.
* @constructor
* Create a new XmlReader.
* @param {Object} meta Metadata configuration options
* @param {Object} recordType Either an Array of field definition objects as passed to
* {@link Ext.data.Record#create}, or a Record constructor object created using {@link Ext.data.Record#create}.
*/
Ext.data.XmlReader = function(meta, recordType){
meta = meta || {};
// backwards compat, convert idPath or id / success
Ext.applyIf(meta, {
idProperty: meta.idProperty || meta.idPath || meta.id,
successProperty: meta.successProperty || meta.success
});
Ext.data.XmlReader.superclass.constructor.call(this, meta, recordType || meta.fields);
};
Ext.extend(Ext.data.XmlReader, Ext.data.DataReader, {
/**
* This method is only used by a DataProxy which has retrieved data from a remote server.
* @param {Object} response The XHR object which contains the parsed XML document. The response is expected
* to contain a property called <tt>responseXML</tt> which refers to an XML document object.
* @return {Object} records A data block which is used by an {@link Ext.data.Store} as
* a cache of Ext.data.Records.
*/
read : function(response){
var doc = response.responseXML;
if(!doc) {
throw {message: "XmlReader.read: XML Document not available"};
}
return this.readRecords(doc);
},
/**
* Create a data block containing Ext.data.Records from an XML document.
* @param {Object} doc A parsed XML document.
* @return {Object} records A data block which is used by an {@link Ext.data.Store} as
* a cache of Ext.data.Records.
*/
readRecords : function(doc){
/**
* After any data loads/reads, the raw XML Document is available for further custom processing.
* @type XMLDocument
*/
this.xmlData = doc;
var root = doc.documentElement || doc,
q = Ext.DomQuery,
totalRecords = 0,
success = true;
if(this.meta.totalProperty){
totalRecords = this.getTotal(root, 0);
}
if(this.meta.successProperty){
success = this.getSuccess(root);
}
var records = this.extractData(q.select(this.meta.record, root), true); // <-- true to return Ext.data.Record[]
// TODO return Ext.data.Response instance. @see #readResponse
return {
success : success,
records : records,
totalRecords : totalRecords || records.length
};
},
/**
* Decode an XML response from server.
* @param {String} action [{@link Ext.data.Api#actions} create|read|update|destroy]
* @param {Object} response HTTP Response object from browser.
* @return {Ext.data.Response} An instance of {@link Ext.data.Response}
*/
readResponse : function(action, response) {
var q = Ext.DomQuery,
doc = response.responseXML;
// create general Response instance.
var res = new Ext.data.Response({
action: action,
success : this.getSuccess(doc),
message: this.getMessage(doc),
data: this.extractData(q.select(this.meta.record, doc) || q.select(this.meta.root, doc), false),
raw: doc
});
if (Ext.isEmpty(res.success)) {
throw new Ext.data.DataReader.Error('successProperty-response', this.meta.successProperty);
}
// Create actions from a response having status 200 must return pk
if (action === Ext.data.Api.actions.create) {
var def = Ext.isDefined(res.data);
if (def && Ext.isEmpty(res.data)) {
throw new Ext.data.JsonReader.Error('root-empty', this.meta.root);
}
else if (!def) {
throw new Ext.data.JsonReader.Error('root-undefined-response', this.meta.root);
}
}
return res;
},
getSuccess : function() {
return true;
},
/**
* build response-data extractor functions.
* @private
* @ignore
*/
buildExtractors : function() {
if(this.ef){
return;
}
var s = this.meta,
Record = this.recordType,
f = Record.prototype.fields,
fi = f.items,
fl = f.length;
if(s.totalProperty) {
this.getTotal = this.createAccessor(s.totalProperty);
}
if(s.successProperty) {
this.getSuccess = this.createAccessor(s.successProperty);
}
if (s.messageProperty) {
this.getMessage = this.createAccessor(s.messageProperty);
}
this.getRoot = function(res) {
return (!Ext.isEmpty(res[this.meta.record])) ? res[this.meta.record] : res[this.meta.root];
};
if (s.idPath || s.idProperty) {
var g = this.createAccessor(s.idPath || s.idProperty);
this.getId = function(rec) {
var id = g(rec) || rec.id;
return (id === undefined || id === '') ? null : id;
};
} else {
this.getId = function(){return null;};
}
var ef = [];
for(var i = 0; i < fl; i++){
f = fi[i];
var map = (f.mapping !== undefined && f.mapping !== null) ? f.mapping : f.name;
ef.push(this.createAccessor(map));
}
this.ef = ef;
},
/**
* Creates a function to return some particular key of data from a response.
* @param {String} key
* @return {Function}
* @private
* @ignore
*/
createAccessor : function(){
var q = Ext.DomQuery;
return function(key) {
switch(key) {
case this.meta.totalProperty:
return function(root, def){
return q.selectNumber(key, root, def);
};
break;
case this.meta.successProperty:
return function(root, def) {
var sv = q.selectValue(key, root, true);
var success = sv !== false && sv !== 'false';
return success;
};
break;
default:
return function(root, def) {
return q.selectValue(key, root, def);
};
break;
}
};
}(),
/**
* extracts values and type-casts a row of data from server, extracted by #extractData
* @param {Hash} data
* @param {Ext.data.Field[]} items
* @param {Number} len
* @private
* @ignore
*/
extractValues : function(data, items, len) {
var f, values = {};
for(var j = 0; j < len; j++){
f = items[j];
var v = this.ef[j](data);
values[f.name] = f.convert((v !== undefined) ? v : f.defaultValue, data);
}
return values;
}
});/**
* @class Ext.data.XmlStore
* @extends Ext.data.Store
* <p>Small helper class to make creating {@link Ext.data.Store}s from XML data easier.
* A XmlStore will be automatically configured with a {@link Ext.data.XmlReader}.</p>
* <p>A store configuration would be something like:<pre><code>
var store = new Ext.data.XmlStore({
// store configs
autoDestroy: true,
storeId: 'myStore',
url: 'sheldon.xml', // automatically configures a HttpProxy
// reader configs
record: 'Item', // records will have an "Item" tag
idPath: 'ASIN',
totalRecords: '@TotalResults'
fields: [
// set up the fields mapping into the xml doc
// The first needs mapping, the others are very basic
{name: 'Author', mapping: 'ItemAttributes > Author'},
'Title', 'Manufacturer', 'ProductGroup'
]
});
* </code></pre></p>
* <p>This store is configured to consume a returned object of the form:<pre><code>
&#60?xml version="1.0" encoding="UTF-8"?>
&#60ItemSearchResponse xmlns="http://webservices.amazon.com/AWSECommerceService/2009-05-15">
&#60Items>
&#60Request>
&#60IsValid>True&#60/IsValid>
&#60ItemSearchRequest>
&#60Author>Sidney Sheldon&#60/Author>
&#60SearchIndex>Books&#60/SearchIndex>
&#60/ItemSearchRequest>
&#60/Request>
&#60TotalResults>203&#60/TotalResults>
&#60TotalPages>21&#60/TotalPages>
&#60Item>
&#60ASIN>0446355453&#60/ASIN>
&#60DetailPageURL>
http://www.amazon.com/
&#60/DetailPageURL>
&#60ItemAttributes>
&#60Author>Sidney Sheldon&#60/Author>
&#60Manufacturer>Warner Books&#60/Manufacturer>
&#60ProductGroup>Book&#60/ProductGroup>
&#60Title>Master of the Game&#60/Title>
&#60/ItemAttributes>
&#60/Item>
&#60/Items>
&#60/ItemSearchResponse>
* </code></pre>
* An object literal of this form could also be used as the {@link #data} config option.</p>
* <p><b>Note:</b> Although not listed here, this class accepts all of the configuration options of
* <b>{@link Ext.data.XmlReader XmlReader}</b>.</p>
* @constructor
* @param {Object} config
* @xtype xmlstore
*/
Ext.data.XmlStore = Ext.extend(Ext.data.Store, {
/**
* @cfg {Ext.data.DataReader} reader @hide
*/
constructor: function(config){
Ext.data.XmlStore.superclass.constructor.call(this, Ext.apply(config, {
reader: new Ext.data.XmlReader(config)
}));
}
});
Ext.reg('xmlstore', Ext.data.XmlStore);