org.fryske_akademy.jsf.lazy

Class AbstractLazyModel<T extends EntityInterface>

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 EntityInterface>
extends org.primefaces.model.LazyDataModel<T>
implements Filtering<T>

Class to support generic lazy loading of data and generic filtering support, declares @EJB CrudReadService.

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(Param.Builder builder, String key, Object value) adds Param.Builder#add(java.lang.String, java.lang.Object, boolean) to builder, uses AbstractLazyController.isUseOr().
void	clear()
static CrudReadService.SORTORDER	convert(org.primefaces.model.SortOrder order)
protected List<Param>	convertFilters(Map<String,Object> filters) Call initParamBuilder() and call addToParamBuilder(org.fryske_akademy.ejb.Param.Builder, java.lang.String, java.lang.Object) for each entry.
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, int) 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() Called from PostConstruct.
protected abstract void	initCrudWriteService(CrudReadService crudReadService) implement, annotate with @Inject (@EJB should work but no success yet) and call setCrudReadService(org.fryske_akademy.ejb.CrudReadService)
protected Param.Builder	initParamBuilder() creates a Param.Builder#Builder(boolean, org.fryske_akademy.ejb.Param.Builder.WildcardMapping) using AbstractLazyController.isSyntaxInvalue() and Param.Builder#DEFAULT_MAPPING.
List<T>	load(int first, int pageSize, List<org.primefaces.model.SortMeta> multiSortMeta, Map<String,Object> filters) loads data via CrudReadService.findDynamic(java.lang.Integer, java.lang.Integer, 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, int maxResults) 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.
protected void	setCrudReadService(CrudReadService crudReadService) call this from your Inject annotated set method
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, int) 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 EntityInterface>

Overrides:

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

Parameters:

rowKey -

Returns:

init

public void init()

Called from PostConstruct. First time loading of data, calls LazyDataModel.setWrappedData(java.lang.Object) and LazyDataModel.setRowCount(int) with CrudReadService.countDynamic(java.util.List, java.lang.Class).

initParamBuilder

protected Param.Builder initParamBuilder()

creates a Param.Builder#Builder(boolean, org.fryske_akademy.ejb.Param.Builder.WildcardMapping) using AbstractLazyController.isSyntaxInvalue() and Param.Builder#DEFAULT_MAPPING.

Returns:

convertFilters

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

Call initParamBuilder() and call addToParamBuilder(org.fryske_akademy.ejb.Param.Builder, java.lang.String, java.lang.Object) for each entry.

Parameters:

filters -

Returns:

addToParamBuilder

protected void addToParamBuilder(Param.Builder builder,
                                 String key,
                                 Object value)

adds Param.Builder#add(java.lang.String, java.lang.Object, boolean) to builder, uses AbstractLazyController.isUseOr(). 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:

builder -

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 EntityInterface>

Parameters:

first -

pageSize -

sortField -

sortOrder -

filters -

Returns:

load

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

loads data via CrudReadService.findDynamic(java.lang.Integer, java.lang.Integer, 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 EntityInterface>

Parameters:

first -

pageSize -

multiSortMeta -

filters -

Returns:

convert

public static CrudReadService.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 EntityInterface>

Returns:

setFiltered

public void setFiltered(List<T> filtered)

Specified by:

setFiltered in interface Filtering<T extends EntityInterface>

getFilters

public Map<String,Object> getFilters()

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

Specified by:

getFilters in interface Filtering<T extends EntityInterface>

Returns:

select

public final void select(String key,
                         String value,
                         int maxResults)

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. POffset is set 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 EntityInterface>

Parameters:

key -

value -

clear

public void clear()

Specified by:

clear in interface Filtering<T extends EntityInterface>

setCrudReadService

protected final void setCrudReadService(CrudReadService crudReadService)

call this from your Inject annotated set method

Parameters:

crudReadService -

initCrudWriteService

protected abstract void initCrudWriteService(CrudReadService crudReadService)

implement, annotate with @Inject (@EJB should work but no success yet) and call setCrudReadService(org.fryske_akademy.ejb.CrudReadService)

Parameters:

crudReadService -