com.holonplatform.vaadin.data

Interface ItemDataSource.CommitHandler<ITEM>

Type Parameters:

ITEM - Item type

All Superinterfaces:

Serializable

Enclosing interface:

ItemDataSource<ITEM,PROPERTY>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface ItemDataSource.CommitHandler<ITEM>
extends Serializable

Data source commit handler to perform concrete persistence operations when data is committed invoking ItemDataSource.commit().

Method Summary

Modifier and Type	Method and Description
void	commit(Collection<ITEM> addedItems, Collection<ITEM> modifiedItems, Collection<ITEM> removedItems) Commit item modifications.
static <T> ItemDataSource.CommitHandler<T>	datastore(Class<? extends T> beanClass, com.holonplatform.core.datastore.Datastore datastore, com.holonplatform.core.datastore.DataTarget<?> target) Construct a new ItemDataSource.CommitHandler for bean type items using a Datastore to perform persistence operations.
static ItemDataSource.CommitHandler<com.holonplatform.core.property.PropertyBox>	datastore(com.holonplatform.core.datastore.Datastore datastore, com.holonplatform.core.datastore.DataTarget<?> target) Construct a new ItemDataSource.CommitHandler for PropertyBox type items using a Datastore to perform persistence operations.

Method Detail

commit

void commit(Collection<ITEM> addedItems,
            Collection<ITEM> modifiedItems,
            Collection<ITEM> removedItems)

Commit item modifications.

Parameters:

addedItems - Added items: an empty collection if none

modifiedItems - Modified items: an empty collection if none

removedItems - Removed items: an empty collection if none

datastore

static ItemDataSource.CommitHandler<com.holonplatform.core.property.PropertyBox> datastore(com.holonplatform.core.datastore.Datastore datastore,
                                                                                           com.holonplatform.core.datastore.DataTarget<?> target)

Construct a new ItemDataSource.CommitHandler for PropertyBox type items using a Datastore to perform persistence operations.

Parameters:

datastore - The datastore to use (not null)

target - The data target to use (not null)

Returns:

The ItemDataSource.CommitHandler instance

datastore

static <T> ItemDataSource.CommitHandler<T> datastore(Class<? extends T> beanClass,
                                                     com.holonplatform.core.datastore.Datastore datastore,
                                                     com.holonplatform.core.datastore.DataTarget<?> target)

Construct a new ItemDataSource.CommitHandler for bean type items using a Datastore to perform persistence operations.

Type Parameters:

T - Bean type

Parameters:

beanClass - Bean class (not null)

datastore - The datastore to use (not null)

target - The data target to use (not null)

Returns:

The ItemDataSource.CommitHandler instance