com.extjs.gxt.ui.client.data
Class JsonReader<D>

java.lang.Object
  com.extjs.gxt.ui.client.data.JsonReader<D>

Type Parameters:

D - the ListLoadResult type being returned by the reader

All Implemented Interfaces:

DataReader<D>

Direct Known Subclasses:

JsonLoadResultReader

public class JsonReader<D>
extends java.lang.Object
implements DataReader<D>

A DataReader implementation that reads JSON data using a ModelType definition and produces a set of ModelData instances.

Subclasses can override createReturnData(Object, List, int) to control what object is returned by the reader. Subclass may override newModelInstance() to return any model data subclass.

Constructor Summary

JsonReader(ModelType modelType)
Creates a new JSON reader.

Method Summary

protected java.lang.Object	createReturnData(java.lang.Object loadConfig, java.util.List<ModelData> records, int totalCount) Responsible for the object being returned by the reader.
protected int	getTotalCount(com.google.gwt.json.client.JSONObject root)
protected ModelData	newModelInstance() Returns the new model instances.
D	read(java.lang.Object loadConfig, java.lang.Object data) Reads the raw data and returns the typed data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JsonReader

public JsonReader(ModelType modelType)

Creates a new JSON reader.

Parameters:

modelType - the model type definition

Method Detail

read

public D read(java.lang.Object loadConfig,
              java.lang.Object data)

Description copied from interface: DataReader

Reads the raw data and returns the typed data.

Specified by:

read in interface DataReader<D>

data - the data to read

Returns:

the data

createReturnData

protected java.lang.Object createReturnData(java.lang.Object loadConfig,
                                            java.util.List<ModelData> records,
                                            int totalCount)

Responsible for the object being returned by the reader.

Parameters:

loadConfig - the load config

records - the list of models

totalCount - the total count

Returns:

the data to be returned by the reader

getTotalCount

protected int getTotalCount(com.google.gwt.json.client.JSONObject root)

newModelInstance

protected ModelData newModelInstance()

Returns the new model instances. Subclasses may override to provide an model data subclass.

Returns:

the new model data instance