org.openepics.cable.ui.lazymodels

Class HistoryLazyModel

java.lang.Object

javax.faces.model.DataModel<T>

org.primefaces.model.LazyDataModel<HistoryUI>

org.openepics.cable.ui.lazymodels.HistoryLazyModel

All Implemented Interfaces:

Serializable, Iterable<HistoryUI>, org.primefaces.model.SelectableDataModel<HistoryUI>

public class HistoryLazyModel
extends org.primefaces.model.LazyDataModel<HistoryUI>

History Lazy loading model implementing all necessary methods for lazy loading on history data.

Author:

Sunil Sah

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
HistoryLazyModel(HistoryService historyService, HistoryRequestManager manager) Constructs a new history lazy model for history data.

Method Summary

Modifier and Type	Method and Description
Map<String,Object>	getFilters()
int	getRowCount()
HistoryUI	getRowData(String rowKey)
Object	getRowKey(HistoryUI object)
String	getSortField()
org.primefaces.model.SortOrder	getSortOrder()
boolean	isEmpty()
List<HistoryUI>	load(int first, int pageSize, String sortField, org.primefaces.model.SortOrder sortOrder, Map<String,Object> filters) Loads a section of data from database.
protected void	setEmpty(int first, List<HistoryUI> results) The lazy data collection is empty, if it returns no data for the first page.
protected void	setLatestLoadData(String sortField, org.primefaces.model.SortOrder sortOrder, Map<String,Object> filters) Important parameters of the data load request

Methods inherited from class org.primefaces.model.LazyDataModel

getPageSize, getRowData, getRowIndex, getWrappedData, isRowAvailable, load, setPageSize, setRowCount, setRowIndex, setWrappedData

Methods inherited from class javax.faces.model.DataModel

addDataModelListener, getDataModelListeners, iterator, 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

HistoryLazyModel

public HistoryLazyModel(HistoryService historyService,
                        HistoryRequestManager manager)

Constructs a new history lazy model for history data.

Parameters:

historyService - service layer handling history operations

manager - backing bean for ui dialog handling

Method Detail

load

public List<HistoryUI> load(int first,
                            int pageSize,
                            String sortField,
                            org.primefaces.model.SortOrder sortOrder,
                            Map<String,Object> filters)

Loads a section of data from database.

Overrides:

load in class org.primefaces.model.LazyDataModel<HistoryUI>

Parameters:

first - index of first row

pageSize - amount of rows to load

sortField - field by which data should be sorted

sortOrder - order by which data should be sorted

filters - filters for data

Returns:

section of data sorted and filtered as given in parameters, and additionally filtered by custom query.

setLatestLoadData

protected void setLatestLoadData(@Nullable
                                 String sortField,
                                 @Nullable
                                 org.primefaces.model.SortOrder sortOrder,
                                 @Nullable
                                 Map<String,Object> filters)

Important parameters of the data load request

Parameters:

sortField - name of the sort field

sortOrder - the sort order

filters - active filters

setEmpty

protected void setEmpty(int first,
                        @Nullable
                        List<HistoryUI> results)

The lazy data collection is empty, if it returns no data for the first page.

Parameters:

first - the index of the first element to be loaded

results - the database results

isEmpty

public boolean isEmpty()

Returns:

true if the current filter returns no data, false otherwise

getSortField

public String getSortField()

getSortOrder

public org.primefaces.model.SortOrder getSortOrder()

getFilters

public Map<String,Object> getFilters()

getRowCount

public int getRowCount()

Overrides:

getRowCount in class org.primefaces.model.LazyDataModel<HistoryUI>

getRowKey

public Object getRowKey(HistoryUI object)

Specified by:

getRowKey in interface org.primefaces.model.SelectableDataModel<HistoryUI>

Overrides:

getRowKey in class org.primefaces.model.LazyDataModel<HistoryUI>

getRowData

public HistoryUI getRowData(String rowKey)

Specified by:

getRowData in interface org.primefaces.model.SelectableDataModel<HistoryUI>

Overrides:

getRowData in class org.primefaces.model.LazyDataModel<HistoryUI>