Package org.drools.runtime

Examples of org.drools.runtime.StatefulKnowledgeSession.retract()

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        ksession.fireAllRules();
        assertEquals( 4,
                      list.size() );

        // now remove a cheese, should be no change
        ksession.retract( ksession.getFactHandle( stilton ) );
        //        ksession = getSerialisedStatefulKnowledgeSession( ksession,
        //                                                          MarshallerFactory.newIdentityMarshallingStrategy(),
        //                                                          true );
        ksession.fireAllRules();
        assertEquals( 4,
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        ksession.fireAllRules();
        assertEquals( 4,
                      list.size() );

        // now remove a person, should be no change
        ksession.retract( ksession.getFactHandle( bobba ) );
        ksession = getSerialisedStatefulKnowledgeSession( ksession,
        //                                                  MarshallerFactory.newIdentityMarshallingStrategy(),
                                                          true );
        ksession.fireAllRules();
        assertEquals( 4,
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        ksession.fireAllRules();
        assertEquals( 4,
                      list.size() );

        //removal remaining cheese, should increase by one, as one person left
        ksession.retract( ksession.getFactHandle( brie ) );
        ksession = getSerialisedStatefulKnowledgeSession( ksession,
        //                                                  MarshallerFactory.newIdentityMarshallingStrategy(),
                                                          true );
        ksession.fireAllRules();
        assertEquals( 5,
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        // remove cheese
        ksession = getSerialisedStatefulKnowledgeSession( ksession,
        //                                                  MarshallerFactory.newIdentityMarshallingStrategy(),
                                                          true );
        ksession.retract( ksession.getFactHandle( stilton ) );
        ksession = getSerialisedStatefulKnowledgeSession( ksession,
        //                                                  MarshallerFactory.newIdentityMarshallingStrategy(),
                                                          true );
        ksession.fireAllRules();
        assertEquals( 2,
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        ksession.fireAllRules();
        assertEquals( 4,
                      list.size() );

        // now remove a cheese, should be no change
        ksession.retract( ksession.getFactHandle( stilton ) );
        ksession = getSerialisedStatefulKnowledgeSession( ksession,
        //                                                  MarshallerFactory.newIdentityMarshallingStrategy(),
                                                          true );
        ksession.fireAllRules();
        assertEquals( 4,
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        ksession.fireAllRules();
        assertEquals( 4,
                      list.size() );

        // now remove a person, should be no change
        ksession.retract( ksession.getFactHandle( bobba ) );
        ksession = getSerialisedStatefulKnowledgeSession( ksession,
        //                                                  MarshallerFactory.newIdentityMarshallingStrategy(),
                                                          true );
        ksession.fireAllRules();
        assertEquals( 4,
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        ksession.fireAllRules();
        assertEquals( 4,
                      list.size() );

        //removal remaining cheese, no
        ksession.retract( ksession.getFactHandle( brie ) );
        ksession = getSerialisedStatefulKnowledgeSession( ksession,
        //                                                  MarshallerFactory.newIdentityMarshallingStrategy(),
                                                          true );
        ksession.fireAllRules();
        assertEquals( 4,
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        int fired = ksession.fireAllRules();
        Assert.assertEquals(fired, 1);

        Assert.assertEquals(1, ksession.getFactCount());

        ksession.retract(handle);

        Assert.assertEquals(0, ksession.getFactCount());

    }
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        int fired = session.fireAllRules();
        Assert.assertEquals( 1,
                fired );

        session.retract(handle);


        handle = session.insert(new MyObject("myObj2"));

        session.update(handle, new MyObject("myObj3"));
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        FactHandle hatPurchaseHandle = ksession.insert( new Purchase( mark,
                                                                      hat ) );

        ksession.fireAllRules();

        ksession.retract( hatPurchaseHandle );
        System.out.println( "Customer mark has returned the hat" );
        ksession.fireAllRules();
    }

    public static class Customer {
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