]
Edson Tirelli updated DROOLS-1541:
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Component/s: core engine
kie server
newInsert.outIdentifier/getValue.identifier don't refer via fact
handle (as per doc.), get only original, not replacement, fact object instances
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Key: DROOLS-1541
URL:
https://issues.jboss.org/browse/DROOLS-1541
Project: Drools
Issue Type: Bug
Components: core engine, kie server
Affects Versions: 6.3.0.Final, 6.5.0.Final
Reporter: Daniel B.
Assignee: Mario Fusco
The identifier passed to the {{KieCommands.newInsert}} method's {{outIdentifier}}
parameter and to the {{ExecutionResults.getValue}} method's {{identifier}} parameter
doesn't actually refer to the fact object _via the fact handle_ as described in the
documentation of {{InsertObjectCommand}}).
The documentation says:
{quote}
11.2.2. InsertObjectCommand
...
outIdentifier Id to identify the FactHandle created in the object insertion and added to
the execution results
{quote}
Although the Drools code in method {{InsertObjectCommand.execute}} does map the given
identifier both to the original object and to the fact handle, the code in method
{{ExecutionResultImpl.getValue}} retrieves the _original_ object instead of retrieving the
object _currently associated with the fact handle_.
This means that if the original fact object instance is replaced with a different
instance (e.g., with {{update(kcontext.getKieRuntime().getFactHandle($oldObj), newObj);}}
in the rules), then {{ExecutionResults.getValue}} will return the _original_ fact object,
not the _current_ value of the fact object (the object instance currently associated with
the fact handle created in the {{newInsert}} call).
That in turn means that immutable fact object instances cannot be used with
{{ExecutionResults.getValue}}.
(It's not 100% clear that it's the code that is wrong (relative to the
documentation) rather than it being documentation that's wrong (relative to the code).
However, the behavior described by the documentation seems more useful than the behavior
exhibited by the code.)