Package org.drools.common

Source Code of org.drools.common.AgendaItemTest

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package org.drools.common;

import org.drools.RuleBaseFactory;
import org.drools.StatefulSession;
import org.drools.base.DefaultKnowledgeHelper;
import org.drools.reteoo.ReteooRuleBase;
import org.junit.Test;
import static org.junit.Assert.*;

public class AgendaItemTest {
   
    @Test
    public void testAddition() {
        ReteooRuleBase rbase = ( ReteooRuleBase ) RuleBaseFactory.newRuleBase();
        StatefulSession wm = rbase.newStatefulSession();
       
        DefaultAgenda agenda = ( DefaultAgenda ) wm.getAgenda();
        AgendaItem item1 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item2 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item3 = agenda.createAgendaItem( null, 0, null, null );
       
        DefaultKnowledgeHelper kcontext = new DefaultKnowledgeHelper( wm );
        kcontext.setActivation( item1 );
       
        // set blockers
        kcontext.blockMatch( item2 );
        kcontext.blockMatch( item3 );
       
        assertNull( item1.getBlockers() );
        assertEquals( 2, item1.getBlocked().size() );
        assertEquals( 1, item2.getBlockers().size() );
        assertEquals( 1, item3.getBlockers().size() );
       
        kcontext.reset();
        kcontext.setActivation( item2 );
        kcontext.blockMatch( item3 );
        assertEquals( 2, item1.getBlocked().size() );
       
        assertEquals( 1, item2.getBlocked().size() );
        assertEquals( 1, item2.getBlockers().size() );
        assertEquals( 2, item3.getBlockers().size() );       
       
        // now check correctly unblocks when parent activation is retracted
       
        //agenda.createAgendaItem( tuple, salience, context, rtn )-
    }
   
    @Test
    public void testRemoval() {
        ReteooRuleBase rbase = ( ReteooRuleBase ) RuleBaseFactory.newRuleBase();
        StatefulSession wm = rbase.newStatefulSession();
       
        DefaultAgenda agenda = ( DefaultAgenda ) wm.getAgenda();
        AgendaItem item1 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item2 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item3 = agenda.createAgendaItem( null, 0, null, null );
       
        // use same data structure as testAddition
        DefaultKnowledgeHelper kcontext = new DefaultKnowledgeHelper( wm );
        kcontext.setActivation( item1 );
       
        // set blockers
        kcontext.blockMatch( item2 );
        kcontext.blockMatch( item3 );
       
         // set blocked
        kcontext.reset();
        kcontext.setActivation( item2 );
        kcontext.blockMatch( item3 );
       
        // Check all references are updated correctly when item1 is retracted
        item1.removeAllBlockersAndBlocked(agenda);
        assertEquals( 0, item2.getBlockers().size() );       
        assertEquals( 1, item2.getBlocked().size() );
        assertEquals(1, item3.getBlockers().size());
        assertNull(item3.getBlocked());
        assertSame( item2, ((LogicalDependency)item2.getBlocked().getFirst()).getJustifier() );
        assertSame( item3, ((LogicalDependency)item2.getBlocked().getFirst()).getJustified() );
       
        // now retract item2
        item2.removeAllBlockersAndBlocked(agenda);
        assertEquals( 0, item3.getBlockers().size() );
        assertNull( item3.getBlocked() );
         
        assertNull( item2.getBlocked() );
        assertNull( item2.getBlocked() );
         
        assertNull( item1.getBlocked() );
        assertNull( item1.getBlocked() );
       
        // reblock with item2, so that we can retract item3
        kcontext.blockMatch( item3 );
        assertNull( item2.getBlockers() );       
        assertEquals( 1, item2.getBlocked().size() );
        assertEquals(1, item3.getBlockers().size());
        assertNull(item3.getBlocked());
        assertSame( item2, ((LogicalDependency)item2.getBlocked().getFirst()).getJustifier() );
        assertSame( item3, ((LogicalDependency)item2.getBlocked().getFirst()).getJustified() );       
       
        item3.removeAllBlockersAndBlocked(agenda);
        assertNull(item3.getBlockers() );
        assertNull( item3.getBlocked() );
         
        assertEquals( 0, item2.getBlocked().size() );
        assertNull( item2.getBlockers() );
         
        assertNull( item1.getBlocked() );
        assertNull( item1.getBlocked() );       
    }   
   
    @Test
    public void testUnblockAll() {
        ReteooRuleBase rbase = ( ReteooRuleBase ) RuleBaseFactory.newRuleBase();
        StatefulSession wm = rbase.newStatefulSession();
       
        DefaultAgenda agenda = ( DefaultAgenda ) wm.getAgenda();
        AgendaItem item1 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item2 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item3 = agenda.createAgendaItem( null, 0, null, null );
       
        // use same data structure as testAddition
        DefaultKnowledgeHelper kcontext = new DefaultKnowledgeHelper( wm );
        kcontext.setActivation( item1 );
        kcontext.blockMatch( item3 );
       
        kcontext.reset();
        kcontext.setActivation( item2 );
        kcontext.blockMatch( item3 );

        kcontext.unblockAllMatches( item3 );
           
        assertEquals( 0, item3.getBlockers().size() );
        assertNull( item3.getBlocked() );
         
        assertEquals( 0, item2.getBlocked().size() );
        assertNull( item2.getBlockers() );
         
        assertEquals( 0, item1.getBlocked().size() );
        assertEquals( 0, item1.getBlocked().size() );             
    }       
   
    @Test
    public void testKnowledgeHelperUpdate() {
        ReteooRuleBase rbase = ( ReteooRuleBase ) RuleBaseFactory.newRuleBase();
        StatefulSession wm = rbase.newStatefulSession();
       
        DefaultAgenda agenda = ( DefaultAgenda ) wm.getAgenda();
        AgendaItem item1 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item2 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item3 = agenda.createAgendaItem( null, 0, null, null );
        AgendaItem item4 = agenda.createAgendaItem( null, 0, null, null );
       
        // use same data structure as testAddition
        DefaultKnowledgeHelper kcontext = new DefaultKnowledgeHelper( wm );
        kcontext.setActivation( item1 );
       
        // set blockers
        kcontext.blockMatch( item2 );
        kcontext.blockMatch( item3 );
       
         // set blocked
        kcontext.reset();
        kcontext.setActivation( item1 );
        kcontext.blockMatch( item4 );
        kcontext.cancelRemainingPreviousLogicalDependencies();
       
        // check only item4 is blocked
        assertEquals( 1, item1.getBlocked().size() );
        assertEquals( item4, ((LogicalDependency)item1.getBlocked().getFirst()).getJustified() );
       
        assertEquals( 0, item2.getBlockers().size() );
        assertEquals( 0, item3.getBlockers().size() );
       
        assertEquals( 1, item4.getBlockers().size() );
               
    }
   
}
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Related Classes of org.drools.common.AgendaItemTest

  • org.drools.base.DefaultKnowledgeHelper
  • org.drools.reteoo.ReteooRuleBase
  • org.drools.StatefulSession
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