Package org.primefaces.model

Class LazyDataModel<T>

java.lang.Object

javax.faces.model.DataModel<E>

javax.faces.model.ListDataModel<T>

org.primefaces.model.LazyDataModel<T>

All Implemented Interfaces:

Serializable, Iterable<T>, SelectableDataModel<T>

public abstract class LazyDataModel<T>
extends javax.faces.model.ListDataModel<T>
implements SelectableDataModel<T>, Serializable

Lazy loading DataModel to deal with huge datasets

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
LazyDataModel()

Method Summary

Modifier and Type	Method	Description
int	getPageSize()
int	getRowCount()
T	getRowData(String rowKey)
String	getRowKey(T object)
List<T>	getWrappedData()
Iterator<T>	iterator()
Iterator<T>	iterator(Map<String,SortMeta> sortBy, Map<String,FilterMeta> filterBy)
abstract List<T>	load(int first, int pageSize, Map<String,SortMeta> sortBy, Map<String,FilterMeta> filterBy)	Loads the data for the given parameters.
void	setPageSize(int pageSize)
void	setRowCount(int rowCount)
void	setRowIndex(int rowIndex)

Methods inherited from class javax.faces.model.ListDataModel

getRowData, getRowIndex, isRowAvailable, setWrappedData

Methods inherited from class javax.faces.model.DataModel

addDataModelListener, getDataModelListeners, removeDataModelListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

LazyDataModel

public LazyDataModel()

Method Detail

load

public abstract List<T> load(int first,
                             int pageSize,
                             Map<String,SortMeta> sortBy,
                             Map<String,FilterMeta> filterBy)

Loads the data for the given parameters.

Parameters:

first - the first entry

pageSize - the page size

sortBy - a list with all sort information

filterBy - a map with all filter information

Returns:

the data

getRowData

public T getRowData(String rowKey)

Specified by:

getRowData in interface SelectableDataModel<T>

getRowKey

public String getRowKey(T object)

Specified by:

getRowKey in interface SelectableDataModel<T>

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

Overrides:

iterator in class javax.faces.model.DataModel<T>

iterator

public Iterator<T> iterator(Map<String,SortMeta> sortBy,
                            Map<String,FilterMeta> filterBy)

getRowCount

public int getRowCount()

Overrides:

getRowCount in class javax.faces.model.ListDataModel<T>

setRowIndex

public void setRowIndex(int rowIndex)

Overrides:

setRowIndex in class javax.faces.model.ListDataModel<T>

getWrappedData

public List<T> getWrappedData()

Overrides:

getWrappedData in class javax.faces.model.ListDataModel<T>

getPageSize

public int getPageSize()

setPageSize

public void setPageSize(int pageSize)

setRowCount

public void setRowCount(int rowCount)