Package io.jmix.flowui.model

Interface InstanceLoader<E>

All Superinterfaces:

DataLoader

All Known Implementing Classes:

InstanceLoaderImpl

@InstallSubject("loadDelegate")
public interface InstanceLoader<E>
extends DataLoader

Loader of a single entity instance.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	InstanceLoader.PostLoadEvent<T>	Event sent after successful loading of an entity instance, merging it into DataContext and setting to the container.
static class	InstanceLoader.PreLoadEvent<T>	Event sent before loading an entity instance.

Method Summary

Modifier and Type	Method	Description
Subscription	addPostLoadListener(Consumer<InstanceLoader.PostLoadEvent<E>> listener)	Adds a listener to InstanceLoader.PostLoadEvent.
Subscription	addPreLoadListener(Consumer<InstanceLoader.PreLoadEvent<E>> listener)	Adds a listener to InstanceLoader.PreLoadEvent.
InstanceContainer<E>	getContainer()	Returns the container which accepts the loaded entity.
Object	getEntityId()	Returns id of the entity to load.
FetchPlan	getFetchPlan()	Returns the fetch plan used for loading the entity.
Function<LoadContext<E>,E>	getLoadDelegate()	Returns a function which will be used to load data instead of standard implementation.
void	setContainer(InstanceContainer<E> container)	Sets the container which accepts the loaded entity.
void	setEntityId(Object entityId)	Sets the id of the entity to load.
void	setFetchPlan(FetchPlan fetchPlan)	Sets the fetch plan to use for loading the entity.
void	setFetchPlan(String fetchPlanName)	Sets the name of the fetch plan to use for loading the entity.
void	setLoadDelegate(Function<LoadContext<E>,E> delegate)	Sets a function which will be used to load data instead of standard implementation.

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

InstanceContainer<E> getContainer()

Returns the container which accepts the loaded entity.

Specified by:

getContainer in interface DataLoader

setContainer

void setContainer(InstanceContainer<E> container)

Sets the container which accepts the loaded entity.

getEntityId

@Nullable
Object getEntityId()

Returns id of the entity to load.

setEntityId

void setEntityId(Object entityId)

Sets the id of the entity to load.

getFetchPlan

FetchPlan getFetchPlan()

Returns the fetch plan used for loading the entity.

setFetchPlan

void setFetchPlan(FetchPlan fetchPlan)

Sets the fetch plan to use for loading the entity.

setFetchPlan

void setFetchPlan(String fetchPlanName)

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

Throws:

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

getLoadDelegate

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

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

setLoadDelegate

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

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

addPreLoadListener

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

Adds a listener to InstanceLoader.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(InstanceLoader.PreLoadEvent<Foo> event) {
         // handle event here
     }
 

Parameters:

listener - listener

Returns:

subscription

addPostLoadListener

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

Adds a listener to InstanceLoader.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(InstanceLoader.PostLoadEvent<Foo> event) {
         // handle event here
     }
 

Parameters:

listener - listener

Returns:

subscription