org.ajax4jsf.model
Class ExtendedDataModel<E>

java.lang.Object
  javax.faces.model.DataModel<E>
      org.ajax4jsf.model.ExtendedDataModel<E>

All Implemented Interfaces:

Iterable<E>

Direct Known Subclasses:

SequenceDataModel

public abstract class ExtendedDataModel<E>
extends javax.faces.model.DataModel<E>

Extesion for DataModel , for support complex data structure, like tree, spreadsheet etc in iterable components.

Author:

shura

Constructor Summary

ExtendedDataModel()

Method Summary

abstract Object	getRowKey()
abstract void	setRowKey(Object key) Instead of simple int for current state selection, this model can use any object for select current data.
abstract void	walk(javax.faces.context.FacesContext context, DataVisitor visitor, Range range, Object argument) Iterate over model by "visitor" pattern, for given range

Methods inherited from class javax.faces.model.DataModel

addDataModelListener, getDataModelListeners, getRowCount, getRowData, getRowIndex, getWrappedData, isRowAvailable, iterator, removeDataModelListener, setRowIndex, setWrappedData

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtendedDataModel

public ExtendedDataModel()

Method Detail

setRowKey

public abstract void setRowKey(Object key)

Instead of simple int for current state selection, this model can use any object for select current data. Implementation depend on model, with any restrictions :

1. key must be Serializable.
2. Object.toString() method must return representation compatible with UIComponent.getClientId(javax.faces.context.FacesContext), as far as this string will be appended to clientId of iterator component.

Parameters:

key - key for select current data, or null for clear selection.

getRowKey

public abstract Object getRowKey()

Returns:

key for selected data or null

walk

public abstract void walk(javax.faces.context.FacesContext context,
                          DataVisitor visitor,
                          Range range,
                          Object argument)

Iterate over model by "visitor" pattern, for given range

Parameters:

context - current JSF context.

visitor - instance of DataVisitor, for process each row.

range - Implementation-specific range of data keys.

argument - Implementation-specific argument

Throws:

IOException