DataReader JsonReader ArrayReader
Package: | Ext.data |
Defined In: | ArrayReader.js |
Class: | ArrayReader |
Extends: | JsonReader |
Data reader class to create an Array of Ext.data.Record objects from an Array.
Each element of that Array represents a row of data fields. The
fields are pulled into a Record object using as a subscript, the mapping
property
of the field definition if it exists, or the field's ordinal position in the definition.
Example code:
var Employee = Ext.data.Record.create([
{name: 'name', mapping: 1}, // "mapping" only needed if an "id" field is present which
{name: 'occupation', mapping: 2} // precludes using the ordinal position as the index.
]);
var myReader = new Ext.data.ArrayReader({
idIndex: 0
}, Employee);
This would consume an Array like this:
[ [1, 'Bill', 'Gardener'], [2, 'Ben', 'Horticulturalist'] ]
Config Options | Defined By | |
---|---|---|
fields : Array/Object Either an Array of Field definition objects (which
will be passed to Ext.data.Record.create, or a Record
constructor ... Either an Array of Field definition objects (which will be passed to Ext.data.Record.create, or a Record constructor created from Ext.data.Record.create. | DataReader | |
id : Number The subscript within row Array that provides an ID for the Record.
Deprecated. Use idIndex instead. | ArrayReader | |
idIndex : Number The subscript within row Array that provides an ID for the Record. | ArrayReader | |
idProperty : String [id] Name of the property within a row object
that contains a record identifier value. Defaults to id | JsonReader | |
messageProperty : String [undefined] Optional name of a property within a server-response that represents a user-feedback message. | DataReader | |
root : String [undefined] Required. The name of the property
which contains the Array of row objects. Defaults to undefined.
An e... [undefined] Required. The name of the property
which contains the Array of row objects. Defaults to undefined.
An exception will be thrown if the root property is undefined. The data
packet value for this property should be an empty array to clear the data
or show no data. | JsonReader | |
totalProperty : String [total] Name of the property from which to
retrieve the total number of records in the dataset. This is only needed
i... [total] Name of the property 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. Defaults to total. | JsonReader |
Property | Defined By | |
---|---|---|
buildExtractors : Object Abstract method, overridden in DataReader extensions such as Ext.data.JsonReader and Ext.data.XmlReader | DataReader | |
extractValues : Object Abstract method overridden in DataReader extensions such as Ext.data.JsonReader and Ext.data.XmlReader | DataReader | |
getId : Object Abstract method created in extension's buildExtractors impl. | DataReader | |
getMessage : Object Abstract method created in extension's buildExtractors impl. | DataReader | |
getRoot : Object Abstract method created in extension's buildExtractors impl. | DataReader | |
getSuccess : Object Abstract method created in extension's buildExtractors impl. | DataReader | |
getTotal : Object Abstract method created in extension's buildExtractors impl. | DataReader | |
jsonData : Object After any data loads, the raw JSON data is available for further custom processing. If no data is
loaded or there is... After any data loads, the raw JSON data is available for further custom processing. If no data is
loaded or there is a load exception this property will be undefined. | JsonReader | |
meta : Mixed This JsonReader's metadata as passed to the constructor, or as passed in
the last data packet's metaData property. | JsonReader |
Method | Defined By | |
---|---|---|
ArrayReader( Object meta , Array/Object recordType )
Create a new ArrayReader Create a new ArrayReader Parameters:
| ArrayReader | |
isData( Object data )
:
BooleanReturns true if the supplied data-hash looks and quacks like data. Checks to see if it has a key
corresponding to id... Returns true if the supplied data-hash looks and quacks like data. Checks to see if it has a key
corresponding to idProperty defined in your DataReader config containing non-empty pk. Parameters:
| DataReader | |
read( Object response )
:
ObjectThis method is only used by a DataProxy which has retrieved data from a remote server. This method is only used by a DataProxy which has retrieved data from a remote server. Parameters:
| JsonReader | |
readRecords( Object o )
:
ObjectCreate a data block containing Ext.data.Records from an Array. Create a data block containing Ext.data.Records from an Array. Parameters:
| ArrayReader | |
readResponse( String action , Object response )
:
ResponseDecode a JSON response from server. Decode a JSON response from server. Parameters:
| JsonReader | |
realize( Record/Record[] record , Object/Object[] data )
:
voidUsed for un-phantoming a record after a successful database insert. Sets the records pk along with new data from ser... Used for un-phantoming a record after a successful database insert. Sets the records pk along with new data from server.
You must 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 must 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. Parameters:
| DataReader | |
update( Record/Record[] rs , Object/Object[] data )
:
voidUsed for updating a non-phantom or "real" record's data with fresh data from server after remote-save.
If returning d... 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 must 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 Parameters:
| DataReader |