org.kie.api.runtime.rule

Interface DataSource<T>

All Superinterfaces:

Iterable<T>

public interface DataSource<T>
extends Iterable<T>

A DataSource is a source of the data processed by a given RuleUnit.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	DataSource.DataSourceFactory

Method Summary

Modifier and Type	Method and Description
static <T> DataSource<T>	create(T... items) Creates a DataSource, optionally containing some items
void	delete(FactHandle handle) Deletes the fact for which the given FactHandle was assigned
void	delete(Object object) Deletes the given object from this DataSource
FactHandle	insert(T object) Inserts a new fact into this DataSource
void	update(FactHandle handle, T object, String... modifiedProperties) Updates the fact for which the given FactHandle was assigned with the new fact set as the second parameter in this method.

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Method Detail

insert

FactHandle insert(T object)

Inserts a new fact into this DataSource

Parameters:

object - the fact to be inserted

Returns:

the fact handle created for the given fact

update

void update(FactHandle handle,
            T object,
            String... modifiedProperties)

Updates the fact for which the given FactHandle was assigned with the new fact set as the second parameter in this method. It is also possible to optionally specify the set of properties that have been modified.

Parameters:

handle - the FactHandle for the fact to be updated.

object - the new value for the fact being updated.

modifiedProperties - the list of the names of the object's properties modified by this update.

delete

void delete(FactHandle handle)

Deletes the fact for which the given FactHandle was assigned

Parameters:

handle - the handle whose fact is to be retracted.

delete

void delete(Object object)

Deletes the given object from this DataSource

Parameters:

object - the object to be deleted.

create

static <T> DataSource<T> create(T... items)

Creates a DataSource, optionally containing some items

Parameters:

items - the items contained in the DataSource.