Package org.drools.lang.descr

Examples of org.drools.lang.descr.AndDescr

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        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( "simple_rule",
                      rule.getName() );

        // we will have 3 children under the main And node
        final AndDescr and = rule.getLhs();
        assertEquals( 3,
                      and.getDescrs().size() );

        PatternDescr left = (PatternDescr) and.getDescrs().get( 0 );
        PatternDescr right = (PatternDescr) and.getDescrs().get( 1 );
        assertEquals( "Person",
                      left.getObjectType() );
        assertEquals( "Cheese",
                      right.getObjectType() );

        assertEquals( 1,
                      left.getConstraint().getDescrs().size() );

        ExprConstraintDescr fld = (ExprConstraintDescr) left.getConstraint().getDescrs().get( 0 );

        assertEquals( "name == \"mark\"",
                      fld.getExpression() );

        assertEquals( 1,
                      right.getConstraint().getDescrs().size() );

        fld = (ExprConstraintDescr) right.getConstraint().getDescrs().get( 0 );

        assertEquals( "type == \"stilton\"",
                      fld.getExpression() );

        // now the "||" part
        final OrDescr or = (OrDescr) and.getDescrs().get( 2 );
        assertEquals( 2,
                      or.getDescrs().size() );
        left = (PatternDescr) or.getDescrs().get( 0 );
        right = (PatternDescr) or.getDescrs().get( 1 );
        assertEquals( "Person",
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        assertEquals( 1,
                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );

        final AndDescr rootAnd = (AndDescr) rule.getLhs();

        assertEquals( 2,
                      rootAnd.getDescrs().size() );

        final OrDescr leftOr = (OrDescr) rootAnd.getDescrs().get( 0 );

        assertEquals( 2,
                      leftOr.getDescrs().size() );
        final NotDescr not = (NotDescr) leftOr.getDescrs().get( 0 );
        final PatternDescr foo1 = (PatternDescr) not.getDescrs().get( 0 );
        assertEquals( "Foo",
                      foo1.getObjectType() );
        final PatternDescr foo2 = (PatternDescr) leftOr.getDescrs().get( 1 );
        assertEquals( "Foo",
                      foo2.getObjectType() );

        final OrDescr rightOr = (OrDescr) rootAnd.getDescrs().get( 1 );

        assertEquals( 2,
                      rightOr.getDescrs().size() );
        final PatternDescr shoes = (PatternDescr) rightOr.getDescrs().get( 0 );
        assertEquals( "Shoes",
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        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );
        final PatternDescr col = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        AndDescr and = (AndDescr) col.getConstraint();
        assertEquals( 1,
                      and.getDescrs().size() );

        final BindingDescr field = (BindingDescr) col.getBindings().get( 0 );
        final ExprConstraintDescr pred = (ExprConstraintDescr) and.getDescrs().get( 0 );
        assertEquals( "age",
                      field.getExpression() );
        assertEquals( "$age2",
                      field.getVariable() );
        assertEqualsIgnoreWhitespace( "$age2 == $age1+2",
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        final RuleDescr rule = (RuleDescr) parseResource( "rule",
                                                          "nested_conditional_elements.drl" );

        assertNotNull( rule );

        final AndDescr root = rule.getLhs();
        final NotDescr not1 = (NotDescr) root.getDescrs().get( 0 );
        final AndDescr and1 = (AndDescr) not1.getDescrs().get( 0 );

        final PatternDescr state = (PatternDescr) and1.getDescrs().get( 0 );
        final NotDescr not2 = (NotDescr) and1.getDescrs().get( 1 );
        final AndDescr and2 = (AndDescr) not2.getDescrs().get( 0 );
        final PatternDescr person = (PatternDescr) and2.getDescrs().get( 0 );
        final PatternDescr cheese = (PatternDescr) and2.getDescrs().get( 1 );

        final PatternDescr person2 = (PatternDescr) root.getDescrs().get( 1 );
        final OrDescr or = (OrDescr) root.getDescrs().get( 2 );
        final PatternDescr cheese2 = (PatternDescr) or.getDescrs().get( 0 );
        final PatternDescr cheese3 = (PatternDescr) or.getDescrs().get( 1 );
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    }

    @Test
    public void testMemberof() throws Exception {
        final String text = "rule X when Country( $cities : city )\nPerson( city memberOf $cities )\n then end";
        AndDescr descrs = ((RuleDescr) parse( "rule",
                                              text )).getLhs();

        assertEquals( 2,
                      descrs.getDescrs().size() );
        PatternDescr pat = (PatternDescr) descrs.getDescrs().get( 1 );
        ExprConstraintDescr fieldConstr = (ExprConstraintDescr) pat.getConstraint().getDescrs().get( 0 );

        assertEquals( "city memberOf $cities",
                      fieldConstr.getExpression() );
    }
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    }

    @Test
    public void testNotMemberof() throws Exception {
        final String text = "rule X when Country( $cities : city )\nPerson( city not memberOf $cities ) then end\n";
        AndDescr descrs = ((RuleDescr) parse( "rule",
                                              text )).getLhs();

        assertEquals( 2,
                      descrs.getDescrs().size() );
        PatternDescr pat = (PatternDescr) descrs.getDescrs().get( 1 );
        ExprConstraintDescr fieldConstr = (ExprConstraintDescr) pat.getConstraint().getDescrs().get( 0 );

        assertEquals( "city not memberOf $cities",
                      fieldConstr.getExpression() );
    }
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    @Test
    public void testRestrictions() throws Exception {
        final String text = "rule X when Foo( bar > 1 || == 1 ) then end\n";

        AndDescr descrs = (AndDescr) ((RuleDescr) parse( "rule",
                                                         text )).getLhs();

        assertEquals( 1,
                      descrs.getDescrs().size() );
        PatternDescr pat = (PatternDescr) descrs.getDescrs().get( 0 );
        ExprConstraintDescr fieldConstr = (ExprConstraintDescr) pat.getConstraint().getDescrs().get( 0 );

        assertEquals( "bar > 1 || == 1",
                      fieldConstr.getExpression() );
    }
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    }

    @Test
    public void testRuleParseLhs3() throws Exception {
        final String text = "rule X when (or\nnot Person()\n(and Cheese()\nMeat()\nWine())) then end";
        AndDescr pattern = ((RuleDescr) parse( "rule",
                                               text )).getLhs();

        assertEquals( 1,
                      pattern.getDescrs().size() );
        OrDescr or = (OrDescr) pattern.getDescrs().get( 0 );
        assertEquals( 2,
                      or.getDescrs().size() );
        NotDescr not = (NotDescr) or.getDescrs().get( 0 );
        AndDescr and = (AndDescr) or.getDescrs().get( 1 );
        assertEquals( 1,
                      not.getDescrs().size() );
        PatternDescr person = (PatternDescr) not.getDescrs().get( 0 );
        assertEquals( "Person",
                      person.getObjectType() );
        assertEquals( 3,
                      and.getDescrs().size() );
        PatternDescr cheese = (PatternDescr) and.getDescrs().get( 0 );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
        PatternDescr meat = (PatternDescr) and.getDescrs().get( 1 );
        assertEquals( "Meat",
                      meat.getObjectType() );
        PatternDescr wine = (PatternDescr) and.getDescrs().get( 2 );
        assertEquals( "Wine",
                      wine.getObjectType() );

    }
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        assertEqualsIgnoreWhitespace( "x++;",
                                      accum.getActionCode() );
        assertEqualsIgnoreWhitespace( "new Integer(x)",
                                      accum.getResultCode() );

        final AndDescr and = (AndDescr) accum.getInput();
        assertEquals( 2,
                      and.getDescrs().size() );
        final PatternDescr person = (PatternDescr) and.getDescrs().get( 0 );
        final PatternDescr cheese = (PatternDescr) and.getDescrs().get( 1 );
        assertEquals( "Person",
                      person.getObjectType() );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
    }
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        RuleDescr rule = pkg.getRules().get( 0 );
        assertTrue( rule.getParentName() != null );
        assertEquals( "rule1",
                      rule.getParentName() );

        AndDescr lhs = rule.getLhs();
        assertNotNull( lhs );
        assertEquals( 1,
                      lhs.getDescrs().size() );

        PatternDescr pattern = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( "foo",
                      pattern.getObjectType() );
        assertEquals( "$foo",
                      pattern.getIdentifier() );
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Related Classes of org.drools.lang.descr.AndDescr

  • org.drools.clips.LhsClpParserTest
  • org.drools.compiler.PackageBuilderConfigurationTest
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  • org.drools.compiler.QueryBuilderTest
  • org.drools.compiler.RuleErrorTest
  • org.drools.compiler.xml.rules.AndHandler
  • org.drools.compiler.xml.rules.QueryHandler
  • org.drools.compiler.xml.rules.RuleHandler
  • org.drools.compiler.xml.rules.XmlPackageReaderTest
  • org.drools.guvnor.models.commons.backend.rule.BRDRLPersistence
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