org.fryske_akademy.jsf.lazy

Class AbstractLazyModel<T extends AbstractEntity>

java.lang.Object

javax.faces.model.DataModel<T>

org.primefaces.model.LazyDataModel<T>

org.fryske_akademy.jsf.lazy.AbstractLazyModel<T>

All Implemented Interfaces:

Serializable, Iterable<T>, Filtering<T>, org.primefaces.model.SelectableDataModel<T>

public abstract class AbstractLazyModel<T extends AbstractEntity>
extends org.primefaces.model.LazyDataModel<T>
implements Filtering<T>

Class to support generic lazy loading of data and generic filtering support

Author:

eduard

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractLazyModel(Class<T> clazz)

Method Summary

Modifier and Type	Method and Description
protected void	addToParamBuilder(ParamInfo.ParamInfoBuilder builder, String key, Object value) adds ParamInfo.ParamInfo(java.lang.String, java.lang.Object) to builder, gives you control over parameter meta info for filter entries.
void	clear()
static JpqlBuilder.SORTORDER	convert(org.primefaces.model.SortOrder order)
protected List<ParamInfo>	convertFilters(Map<String,Object> filters) removes filters on booelan fields with value false, so false show both false and true and true only shows true
CrudReadService	getCrudReadService()
List<T>	getFiltered() Use this in primefaces EL expression for filteredValue
Map<String,Object>	getFilters() used this in EL expression for filterValue: #{controller.filters['filtername']}
protected abstract AbstractLazyController	getLazyController() Used from load(int, int, java.util.List, java.util.Map) to set AbstractCrudController.setRememberTableState(boolean) to true and from select(java.lang.String, java.lang.String) to set AbstractCrudController.setRememberTableState(boolean) to false.
T	getRowData(String rowKey) Calls CrudReadService.find(java.io.Serializable, java.lang.Class) with Integer.valueOf(rowKey)
void	init() first time loading of data, calls LazyDataModel.setWrappedData(java.lang.Object) and LazyDataModel.setRowCount(int) with CrudReadService.count(java.util.List, java.lang.Class).
List<T>	load(int first, int pageSize, List<org.primefaces.model.SortMeta> multiSortMeta, Map<String,Object> filters) loads data via CrudReadService.findPaged(int, int, java.util.Map, java.util.List, java.lang.Class), converts filters.
List<T>	load(int first, int pageSize, String sortField, org.primefaces.model.SortOrder sortOrder, Map<String,Object> filters) Calls load(int, int, java.util.List, java.util.Map)
void	select(String key, String value) filters data based on a key (column) and value by calling setFiltered(java.util.List) with load(int, int, java.lang.String, org.primefaces.model.SortOrder, java.util.Map) as argument.
void	setFiltered(List<T> filtered)

Methods inherited from class org.primefaces.model.LazyDataModel

getPageSize, getRowCount, getRowData, getRowIndex, getRowKey, getWrappedData, isRowAvailable, 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

AbstractLazyModel

public AbstractLazyModel(Class<T> clazz)

Method Detail

getLazyController

protected abstract AbstractLazyController getLazyController()

Used from load(int, int, java.util.List, java.util.Map) to set AbstractCrudController.setRememberTableState(boolean) to true and from select(java.lang.String, java.lang.String) to set AbstractCrudController.setRememberTableState(boolean) to false.

Returns:

getCrudReadService

public CrudReadService getCrudReadService()

getRowData

public T getRowData(String rowKey)

Calls CrudReadService.find(java.io.Serializable, java.lang.Class) with Integer.valueOf(rowKey)

Specified by:

getRowData in interface org.primefaces.model.SelectableDataModel<T extends AbstractEntity>

Overrides:

getRowData in class org.primefaces.model.LazyDataModel<T extends AbstractEntity>

Parameters:

rowKey -

Returns:

init

@PostConstruct
public void init()

first time loading of data, calls LazyDataModel.setWrappedData(java.lang.Object) and LazyDataModel.setRowCount(int) with CrudReadService.count(java.util.List, java.lang.Class).

convertFilters

protected List<ParamInfo> convertFilters(Map<String,Object> filters)

removes filters on booelan fields with value false, so false show both false and true and true only shows true

Parameters:

filters -

Returns:

addToParamBuilder

protected void addToParamBuilder(ParamInfo.ParamInfoBuilder builder,
                                 String key,
                                 Object value)

adds ParamInfo.ParamInfo(java.lang.String, java.lang.Object) to builder, gives you control over parameter meta info for filter entries. Doesn't add boolean false values from filters, otherwise rows will always be filtered on true or on false, true and false will never show both.

Parameters:

key -

value -

load

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

Calls load(int, int, java.util.List, java.util.Map)

Overrides:

load in class org.primefaces.model.LazyDataModel<T extends AbstractEntity>

Parameters:

first -

pageSize -

sortField -

sortOrder -

filters -

Returns:

load

public List<T> load(int first,
                    int pageSize,
                    List<org.primefaces.model.SortMeta> multiSortMeta,
                    Map<String,Object> filters)

loads data via CrudReadService.findPaged(int, int, java.util.Map, java.util.List, java.lang.Class), converts filters. When selecting, set AbstractCrudController.setRememberTableState(boolean) to true to restore saving table state across views.

Overrides:

load in class org.primefaces.model.LazyDataModel<T extends AbstractEntity>

Parameters:

first -

pageSize -

multiSortMeta -

filters -

Returns:

convert

public static JpqlBuilder.SORTORDER convert(org.primefaces.model.SortOrder order)

getFiltered

public List<T> getFiltered()

Use this in primefaces EL expression for filteredValue

Specified by:

getFiltered in interface Filtering<T extends AbstractEntity>

Returns:

setFiltered

public void setFiltered(List<T> filtered)

Specified by:

setFiltered in interface Filtering<T extends AbstractEntity>

getFilters

public Map<String,Object> getFilters()

used this in EL expression for filterValue: #{controller.filters['filtername']}

Specified by:

getFilters in interface Filtering<T extends AbstractEntity>

Returns:

select

public final void select(String key,
                         String value)

filters data based on a key (column) and value by calling setFiltered(java.util.List) with load(int, int, java.lang.String, org.primefaces.model.SortOrder, java.util.Map) as argument. Pagesize will be set to 10, offset to 0. This method makes sure load() isn't called the next time in the application lifecycle because this would void the filtering. Set AbstractCrudController.setRememberTableState(boolean) to false so saving table doesn't interfere with the selecting mechanism.

Specified by:

select in interface Filtering<T extends AbstractEntity>

Parameters:

key -

value -

clear

public void clear()

Specified by:

clear in interface Filtering<T extends AbstractEntity>