[jboss-jira] [JBoss JIRA] (DROOLS-624) Passive queries behave in a reactive way
Mario Fusco created DROOLS-624:
----------------------------------
Summary: Passive queries behave in a reactive way
Key: DROOLS-624
URL: https://issues.jboss.org/browse/DROOLS-624
Project: Drools
Issue Type: Bug
Reporter: Mario Fusco
Assignee: Mark Proctor
The batch evaluation performed by phreak doesn't allow to take count of the sequence
of the inserts performed into a kiesession between 2 consecutive fireAllRules. This means
that the following test case succeeds as expected
{code}
@Test
public void testPassiveQuery2() throws Exception {
String str =
"global java.util.List list\n" +
"query Q (Integer i)\n" +
" String( this == i.toString() )\n" +
"end\n" +
"rule R @Eager(true) when\n" +
" $i : Integer()\n" +
" ?Q( $i; )\n" +
"then\n" +
" list.add( $i );\n" +
"end\n";
KieSession ksession = new KieHelper()
.addContent(str, ResourceType.DRL)
.build()
.newKieSession();
List<Integer> list = new ArrayList<Integer>();
ksession.setGlobal("list", list);
ksession.insert("1");
ksession.insert(1);
ksession.fireAllRules();
assertEquals(1, list.size());
}
{code}
but you got an activatoin even if the fact matched by the passive query is inserted (the
String in this case) is inserted after. So the following test fails:
{code}
@Test
public void testPassiveQuery3() throws Exception {
String str =
"global java.util.List list\n" +
"query Q (Integer i)\n" +
" String( this == i.toString() )\n" +
"end\n" +
"rule R @Eager(true) when\n" +
" $i : Integer()\n" +
" ?Q( $i; )\n" +
"then\n" +
" list.add( $i );\n" +
"end\n";
KieSession ksession = new KieHelper()
.addContent(str, ResourceType.DRL)
.build()
.newKieSession();
List<Integer> list = new ArrayList<Integer>();
ksession.setGlobal("list", list);
ksession.insert(1);
ksession.insert("1");
ksession.fireAllRules();
System.out.println(list);
assertEquals(0, list.size());
}
{code}
Note that performing a further fireAllRules between the 2 insertions force the evaluation
of the lefttTuple before the insertion of the fact matched by the passive query and the
fixes the problem as demonstrated by this last test.
{code}
@Test
public void testPassiveQuery4() throws Exception {
String str =
"global java.util.List list\n" +
"query Q (Integer i)\n" +
" String( this == i.toString() )\n" +
"end\n" +
"rule R @Eager(true) when\n" +
" $i : Integer()\n" +
" ?Q( $i; )\n" +
"then\n" +
" list.add( $i );\n" +
"end\n";
KieSession ksession = new KieHelper()
.addContent(str, ResourceType.DRL)
.build()
.newKieSession();
List<Integer> list = new ArrayList<Integer>();
ksession.setGlobal("list", list);
ksession.insert(1);
ksession.fireAllRules();
ksession.insert("1");
ksession.fireAllRules();
System.out.println(list);
assertEquals(0, list.size());
}
{code}
--
This message was sent by Atlassian JIRA
(v6.3.1#6329)