org.primefaces.model

Class LazyDataModel<T>

java.lang.Object

javax.faces.model.DataModel<T>

org.primefaces.model.LazyDataModel<T>

All Implemented Interfaces:

Serializable, Iterable<T>, SelectableDataModel<T>

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

Custom lazy loading DataModel to deal with huge datasets

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LazyDataModel()

Method Summary

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

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

isRowAvailable

public boolean isRowAvailable()

Specified by:

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

getRowCount

public int getRowCount()

Specified by:

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

getRowData

public T getRowData()

Specified by:

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

getRowIndex

public int getRowIndex()

Specified by:

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

setRowIndex

public void setRowIndex(int rowIndex)

Specified by:

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

getWrappedData

public List<T> getWrappedData()

Specified by:

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

setWrappedData

public void setWrappedData(Object list)

Specified by:

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

getPageSize

public int getPageSize()

setPageSize

public void setPageSize(int pageSize)

setRowCount

public void setRowCount(int rowCount)

load

public List<T> load(int first,
                    int pageSize,
                    String sortField,
                    SortOrder sortOrder,
                    Map<String,FilterMeta> filterBy)

load

public 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 informations

filterBy - a map with all filter informations

Returns:

the data

getRowData

public T getRowData(String rowKey)

Specified by:

getRowData in interface SelectableDataModel<T>

getRowKey

public Object 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

@Deprecated
public Iterator<T> iterator(String sortField,
                                        SortOrder sortOrder,
                                        Map<String,FilterMeta> filterBy)

Deprecated.

iterator

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