<div xmlns:ext="http://www.extjs.com" class="body-wrap"><h1>Class <a href="source/DataReader.html#cls-Ext.data.DataReader">Ext.data.DataReader</a></h1><table cellspacing="0"><tr><td class="label">Package:</td><td class="hd-info">Ext.data</td></tr><tr><td class="label">Defined In:</td><td class="hd-info"><a href="source/DataReader.html#cls-Ext.data.DataReader">DataReader.js</a></td></tr><tr><td class="label">Class:</td><td class="hd-info"><a href="source/DataReader.html#cls-Ext.data.DataReader">DataReader</a></td></tr><tr><td class="label">Subclasses:</td><td class="hd-info"><a href="output/Ext.data.JsonReader.html" ext:cls="Ext.data.JsonReader">JsonReader</a>,&#13;<a href="output/Ext.data.XmlReader.html" ext:cls="Ext.data.XmlReader">XmlReader</a></td></tr><tr><td class="label">Extends:</td><td class="hd-info">Object</td></tr></table><div class="description">Abstract base class for reading structured data from a data source and converting
it into an object containing <a href="output/Ext.data.Record.html" ext:cls="Ext.data.Record">Ext.data.Record</a> objects and metadata for use
by an <a href="output/Ext.data.Store.html" ext:cls="Ext.data.Store">Ext.data.Store</a>.  This class is intended to be extended and should not
be created directly. For existing implementations, see <a href="output/Ext.data.ArrayReader.html" ext:cls="Ext.data.ArrayReader">Ext.data.ArrayReader</a>,
<a href="output/Ext.data.JsonReader.html" ext:cls="Ext.data.JsonReader">Ext.data.JsonReader</a> and <a href="output/Ext.data.XmlReader.html" ext:cls="Ext.data.XmlReader">Ext.data.XmlReader</a>.</div><div class="hr"></div><a id="Ext.data.DataReader-configs"></a><h2>Config Options</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Config Options</th><th class="msource-header">Defined By</th></tr><tr class="config-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-fields"></a><b><a href="source/DataReader.html#cfg-Ext.data.DataReader-fields">fields</a></b> : Array/Object<div class="mdesc"><div class="short">Either an Array of Field definition objects (which
will be passed to Ext.data.Record.create, or a Record
constructor ...</div><div class="long"><p>Either an Array of <a href="output/Ext.data.Field.html" ext:cls="Ext.data.Field">Field</a> definition objects (which
will be passed to <a href="output/Ext.data.Record.html#Ext.data.Record-create" ext:member="create" ext:cls="Ext.data.Record">Ext.data.Record.create</a>, or a <a href="output/Ext.data.Record.html" ext:cls="Ext.data.Record">Record</a>
constructor created from <a href="output/Ext.data.Record.html#Ext.data.Record-create" ext:member="create" ext:cls="Ext.data.Record">Ext.data.Record.create</a>.</p></div></div></td><td class="msource">DataReader</td></tr><tr class="config-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-messageProperty"></a><b><a href="source/DataReader.html#cfg-Ext.data.DataReader-messageProperty">messageProperty</a></b> : String<div class="mdesc">[undefined] Optional name of a property within a server-response that represents a user-feedback message.</div></td><td class="msource">DataReader</td></tr></tbody></table><a id="Ext.data.DataReader-props"></a><h2>Public Properties</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Property</th><th class="msource-header">Defined By</th></tr><tr class="property-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-buildExtractors"></a><b><a href="source/DataReader.html#prop-Ext.data.DataReader-buildExtractors">buildExtractors</a></b> : Object<div class="mdesc">Abstract method, overridden in DataReader extensions such as <a href="output/Ext.data.JsonReader.html" ext:cls="Ext.data.JsonReader">Ext.data.JsonReader</a> and <a href="output/Ext.data.XmlReader.html" ext:cls="Ext.data.XmlReader">Ext.data.XmlReader</a></div></td><td class="msource">DataReader</td></tr><tr class="property-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-extractValues"></a><b><a href="source/DataReader.html#prop-Ext.data.DataReader-extractValues">extractValues</a></b> : Object<div class="mdesc">Abstract method overridden in DataReader extensions such as <a href="output/Ext.data.JsonReader.html" ext:cls="Ext.data.JsonReader">Ext.data.JsonReader</a> and <a href="output/Ext.data.XmlReader.html" ext:cls="Ext.data.XmlReader">Ext.data.XmlReader</a></div></td><td class="msource">DataReader</td></tr><tr class="property-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-getId"></a><b><a href="source/DataReader.html#prop-Ext.data.DataReader-getId">getId</a></b> : Object<div class="mdesc">Abstract method created in extension's buildExtractors impl.</div></td><td class="msource">DataReader</td></tr><tr class="property-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-getMessage"></a><b><a href="source/DataReader.html#prop-Ext.data.DataReader-getMessage">getMessage</a></b> : Object<div class="mdesc">Abstract method created in extension's buildExtractors impl.</div></td><td class="msource">DataReader</td></tr><tr class="property-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-getRoot"></a><b><a href="source/DataReader.html#prop-Ext.data.DataReader-getRoot">getRoot</a></b> : Object<div class="mdesc">Abstract method created in extension's buildExtractors impl.</div></td><td class="msource">DataReader</td></tr><tr class="property-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-getSuccess"></a><b><a href="source/DataReader.html#prop-Ext.data.DataReader-getSuccess">getSuccess</a></b> : Object<div class="mdesc">Abstract method created in extension's buildExtractors impl.</div></td><td class="msource">DataReader</td></tr><tr class="property-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-getTotal"></a><b><a href="source/DataReader.html#prop-Ext.data.DataReader-getTotal">getTotal</a></b> : Object<div class="mdesc">Abstract method created in extension's buildExtractors impl.</div></td><td class="msource">DataReader</td></tr><tr class="property-row  "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-meta"></a><b><a href="source/DataReader.html#prop-Ext.data.DataReader-meta">meta</a></b> : Mixed<div class="mdesc">This DataReader's configured metadata as passed to the constructor.</div></td><td class="msource">DataReader</td></tr></tbody></table><a id="Ext.data.DataReader-methods"></a><h2>Public Methods</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Method</th><th class="msource-header">Defined By</th></tr><tr class="method-row expandable"><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-DataReader"></a><b class="constructor"><a href="source/DataReader.html#cls-Ext.data.DataReader">DataReader</a></b><span class="openparen">(&nbsp;</span><span title="Required" class="required">Object&nbsp;meta</span><span class="comma">,&nbsp;</span><span title="Required" class="required">Array/Object&nbsp;recordType</span><span class="closeparen">&nbsp;)</span><div class="mdesc"><div class="short">Create a new DataReader</div><div class="long">Create a new DataReader<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>meta</code> : Object<div class="sub-desc">Metadata configuration options (implementation-specific).</div></li><li><code>recordType</code> : Array/Object<div class="sub-desc"><p>Either an Array of <a href="output/Ext.data.Field.html" ext:cls="Ext.data.Field">Field</a> definition objects (which
will be passed to <a href="output/Ext.data.Record.html#Ext.data.Record-create" ext:member="create" ext:cls="Ext.data.Record">Ext.data.Record.create</a>, or a <a href="output/Ext.data.Record.html" ext:cls="Ext.data.Record">Record</a>
constructor created using <a href="output/Ext.data.Record.html#Ext.data.Record-create" ext:member="create" ext:cls="Ext.data.Record">Ext.data.Record.create</a>.</p></div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">DataReader</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-isData"></a><b class="method"><a href="source/DataReader.html#method-Ext.data.DataReader-isData">isData</a></b><span class="openparen">(&nbsp;</span><span title="Required" class="required">Object&nbsp;data</span><span class="closeparen">&nbsp;)</span><span class="colon">&nbsp;:&nbsp;</span><span class="return">Boolean</span><div class="mdesc"><div class="short">Returns true if the supplied data-hash looks and quacks like data.  Checks to see if it has a key
corresponding to id...</div><div class="long">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.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>data</code> : Object<div class="sub-desc"></div></li></ul><strong>Returns:</strong><ul><li><code>Boolean</code><div class="sub-desc"></div></li></ul></div></div></div></td><td class="msource">DataReader</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-realize"></a><b class="method"><a href="source/DataReader.html#method-Ext.data.DataReader-realize">realize</a></b><span class="openparen">(&nbsp;</span><span title="Required" class="required">Record/Record[]&nbsp;record</span><span class="comma">,&nbsp;</span><span title="Required" class="required">Object/Object[]&nbsp;data</span><span class="closeparen">&nbsp;)</span><span class="colon">&nbsp;:&nbsp;</span><span class="return">void</span><div class="mdesc"><div class="short">Used for un-phantoming a record after a successful database insert.  Sets the records pk along with new data from ser...</div><div class="long">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.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>record</code> : Record/Record[]<div class="sub-desc">The phantom record to be realized.</div></li><li><code>data</code> : Object/Object[]<div class="sub-desc">The new record data to apply.  Must include the primary-key from database defined in idProperty field.</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">DataReader</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi">&nbsp;</a></td><td class="sig"><a id="Ext.data.DataReader-update"></a><b class="method"><a href="source/DataReader.html#method-Ext.data.DataReader-update">update</a></b><span class="openparen">(&nbsp;</span><span title="Required" class="required">Record/Record[]&nbsp;rs</span><span class="comma">,&nbsp;</span><span title="Required" class="required">Object/Object[]&nbsp;data</span><span class="closeparen">&nbsp;)</span><span class="colon">&nbsp;:&nbsp;</span><span class="return">void</span><div class="mdesc"><div class="short">Used for updating a non-phantom or "real" record's data with fresh data from server after remote-save.
If returning d...</div><div class="long">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<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>rs</code> : Record/Record[]<div class="sub-desc"></div></li><li><code>data</code> : Object/Object[]<div class="sub-desc"></div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">DataReader</td></tr></tbody></table><a id="Ext.data.DataReader-events"></a><h2>Public Events</h2><div class="no-members">This class has no public events.</div></div>