Package io.jmix.flowui.model

Interface CollectionLoader<E>

All Superinterfaces:

BaseCollectionLoader, DataLoader

All Known Implementing Classes:

CollectionLoaderImpl

@InstallSubject("loadDelegate")
public interface CollectionLoader<E>
extends BaseCollectionLoader

Loader of entity collections.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	CollectionLoader.PostLoadEvent<T>	Event sent after successful loading of entities, merging them into DataContext and setting to the container.
static class	CollectionLoader.PreLoadEvent<T>	Event sent before loading entities.

Method Summary

Modifier and Type	Method	Description
Subscription	addPostLoadListener(Consumer<CollectionLoader.PostLoadEvent<E>> listener)	Adds a listener to CollectionLoader.PostLoadEvent.
Subscription	addPreLoadListener(Consumer<CollectionLoader.PreLoadEvent<E>> listener)	Adds a listener to CollectionLoader.PreLoadEvent.
LoadContext<E>	createLoadContext()	Returns LoadContext which is created by the parameters of this loader.
CollectionContainer<E>	getContainer()	Returns the container which accepts loaded entities.
FetchPlan	getFetchPlan()	Returns the fetch plan used for loading entities.
Function<LoadContext<E>,List<E>>	getLoadDelegate()	Returns a function which will be used to load data instead of standard implementation.
boolean	isCacheable()	Returns true if the query for loading data is cacheable.
void	setCacheable(boolean cacheable)	Sets the query for loading data cacheable.
void	setContainer(CollectionContainer<E> container)	Sets the container which accepts loaded entities.
void	setFetchPlan(FetchPlan fetchPlan)	Sets the fetch plan to use for loading entities.
void	setFetchPlan(String fetchPlanName)	Sets the name of the fetch plan to use for loading entities.
void	setLoadDelegate(Function<LoadContext<E>,List<E>> delegate)	Sets a function which will be used to load data instead of standard implementation.

Methods inherited from interface io.jmix.flowui.model.BaseCollectionLoader

getFirstResult, getMaxResults, getSort, setFirstResult, setMaxResults, setSort

Methods inherited from interface io.jmix.flowui.model.DataLoader

getCondition, getDataContext, getHints, getParameter, getParameters, getQuery, load, removeParameter, setCondition, setDataContext, setHint, setParameter, setParameters, setQuery

Method Details

getContainer

CollectionContainer<E> getContainer()

Returns the container which accepts loaded entities.

Specified by:

getContainer in interface BaseCollectionLoader

Specified by:

getContainer in interface DataLoader

setContainer

void setContainer(CollectionContainer<E> container)

Sets the container which accepts loaded entities.

createLoadContext

LoadContext<E> createLoadContext()

Returns LoadContext which is created by the parameters of this loader. The LoadContext can be used with DataManager to load data by the same conditions.

isCacheable

boolean isCacheable()

Returns true if the query for loading data is cacheable.

setCacheable

void setCacheable(boolean cacheable)

Sets the query for loading data cacheable.

getFetchPlan

FetchPlan getFetchPlan()

Returns the fetch plan used for loading entities.

setFetchPlan

void setFetchPlan(FetchPlan fetchPlan)

Sets the fetch plan to use for loading entities.

setFetchPlan

void setFetchPlan(String fetchPlanName)

Sets the name of the fetch plan to use for loading entities.

Throws:

IllegalStateException - if the fetch plan has already been set by setFetchPlan(FetchPlan)

getLoadDelegate

Function<LoadContext<E>,List<E>> getLoadDelegate()

Returns a function which will be used to load data instead of standard implementation.

setLoadDelegate

void setLoadDelegate(Function<LoadContext<E>,List<E>> delegate)

Sets a function which will be used to load data instead of standard implementation.

addPreLoadListener

Subscription addPreLoadListener(Consumer<CollectionLoader.PreLoadEvent<E>> listener)

Adds a listener to CollectionLoader.PreLoadEvent.

You can also add an event listener declaratively using a controller method annotated with Subscribe:

    @Subscribe(id = "fooDl", target = Target.DATA_LOADER)
     private void onFooDlPreLoad(CollectionLoader.PreLoadEvent event) {
         // handle event here
     }
 

Parameters:

listener - listener

Returns:

subscription

addPostLoadListener

Subscription addPostLoadListener(Consumer<CollectionLoader.PostLoadEvent<E>> listener)

Adds a listener to CollectionLoader.PostLoadEvent.

You can also add an event listener declaratively using a controller method annotated with Subscribe:

    @Subscribe(id = "fooDl", target = Target.DATA_LOADER)
     private void onFooDlPostLoad(CollectionLoader.PostLoadEvent event) {
         // handle event here
     }
 

Parameters:

listener - listener

Returns:

subscription