org.drools
Class TransactionalWorkingMemory
java.lang.Object
|
+--org.drools.WorkingMemory
|
+--org.drools.TransactionalWorkingMemory
- public class TransactionalWorkingMemory
- extends WorkingMemory
A transactional knowledge session for a RuleBase
.
A WorkingMemory
which caches all assertion, retractions
and modifications, and only performs the fact propagation and
rule action invokation upon commit()
.
- Author:
- bob mcwhirter
- See Also:
WorkingMemory
,
RuleBase
Method Summary |
void |
abort()
Abort this TransactionalWorkingMemory ,
by tossing out all asserted objects, and reseting
this TransactionalWorkingMemory to a
clean state. |
void |
assertObject(java.lang.Object object)
Assert a new fact object into this working memory. |
void |
commit()
Commit all asserted objects into the logic engine,
and reset this TransactionalWorkingMemory
to a clean state. |
void |
modifyObject(java.lang.Object object)
Modify a fact object in this working memory. |
void |
retractObject(java.lang.Object object)
Retract a fact object from this working memory. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
TransactionalWorkingMemory
public TransactionalWorkingMemory(RuleBase ruleBase)
- Construct.
- Parameters:
ruleBase
- The RuleBase
for this WorkingMemory
.
abort
public void abort()
- Abort this
TransactionalWorkingMemory
,
by tossing out all asserted objects, and reseting
this TransactionalWorkingMemory
to a
clean state.
commit
public void commit()
throws DroolsException
- Commit all asserted objects into the logic engine,
and reset this
TransactionalWorkingMemory
to a clean state.
- Throws:
DroolsException
- If an
assertObject
public void assertObject(java.lang.Object object)
throws AssertionException
- Assert a new fact object into this working memory.
- Overrides:
assertObject
in class WorkingMemory
- Parameters:
object
- The object to assert.- Throws:
AssertionException
- if an error occurs during assertion.
modifyObject
public void modifyObject(java.lang.Object object)
throws FactException
- Modify a fact object in this working memory.
With the exception of time-based nodes, modification of
a fact object is semantically equivelent to retracting and
re-asserting it.
- Overrides:
modifyObject
in class WorkingMemory
- Parameters:
object
- The object to modify.- Throws:
FactException
- if an error occurs during modification.
retractObject
public void retractObject(java.lang.Object object)
throws RetractionException
- Retract a fact object from this working memory.
- Overrides:
retractObject
in class WorkingMemory
- Parameters:
object
- The object to retract.- Throws:
RetractionException
- if an error occurs during retraction.
Copyright © 2001-2003 The Werken Company. All Rights Reserved.