Package org.drools.lang.descr

Examples of org.drools.lang.descr.AndDescr

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

        //we will have 2 children under the main And node
        final AndDescr and = rule.getLhs();
        assertEquals( 2,
                      and.getDescrs().size() );

        //check the "&&" part
        final AndDescr join = (AndDescr) and.getDescrs().get( 0 );
        assertEquals( 2,
                      join.getDescrs().size() );

        PatternDescr left = (PatternDescr) join.getDescrs().get( 0 );
        PatternDescr right = (PatternDescr) join.getDescrs().get( 1 );
        assertEquals( "Person",
                      left.getObjectType() );
        assertEquals( "Cheese",
                      right.getObjectType() );
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        final RuleDescr rule = (RuleDescr) pack.getRules().get( 0 );

        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final AndDescr rootAnd = (AndDescr) rule.getLhs().getDescrs().get( 0 );

        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) pack.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );
        final PatternDescr col = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        AndDescr and = (AndDescr) col.getConstraint();
        assertEquals( 2,
                      and.getDescrs().size() );

        final FieldBindingDescr field = (FieldBindingDescr) and.getDescrs().get( 0 );
        final PredicateDescr pred = (PredicateDescr) and.getDescrs().get( 1 );
        assertEquals( "age",
                      field.getFieldName() );
        assertEquals( "$age2",
                      field.getIdentifier() );
        assertEqualsIgnoreWhitespace( "$age2 == $age1+2",
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        assertFalse( this.parser.getErrorMessages().toString(),
                     this.parser.hasErrors() );

        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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                      cheese.getObjectType() );
    }

    public void testMemberof() throws Exception {
        final String text = "Country( $cities : city )\nPerson( city memberOf $cities )\n";
        final AndDescr descrs = new AndDescr();
        final CharStream charStream = new ANTLRStringStream( text );
        final DRLLexer lexer = new DRLLexer( charStream );
        final TokenStream tokenStream = new CommonTokenStream( lexer );
        final DRLParser parser = new DRLParser( tokenStream );
        parser.setLineOffset( descrs.getLine() );
        parser.normal_lhs_block( descrs );
        if ( parser.hasErrors() ) {
            System.err.println( parser.getErrorMessages() );
        }
        assertFalse( parser.hasErrors() );

        assertEquals( 2,
                      descrs.getDescrs().size() );
        PatternDescr pat = (PatternDescr) descrs.getDescrs().get( 1 );
        FieldConstraintDescr fieldConstr = (FieldConstraintDescr) pat.getConstraint().getDescrs().get( 0 );
        VariableRestrictionDescr restr = (VariableRestrictionDescr) fieldConstr.getRestrictions().get( 0 );

        assertEquals( "memberOf",
                      restr.getEvaluator() );
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                      restr.getIdentifier() );
    }

    public void testNotMemberof() throws Exception {
        final String text = "Country( $cities : city )\nPerson( city not memberOf $cities )\n";
        final AndDescr descrs = new AndDescr();
        final CharStream charStream = new ANTLRStringStream( text );
        final DRLLexer lexer = new DRLLexer( charStream );
        final TokenStream tokenStream = new CommonTokenStream( lexer );
        final DRLParser parser = new DRLParser( tokenStream );
        parser.setLineOffset( descrs.getLine() );
        parser.normal_lhs_block( descrs );
        if ( parser.hasErrors() ) {
            System.err.println( parser.getErrorMessages() );
        }
        assertFalse( parser.hasErrors() );

        assertEquals( 2,
                      descrs.getDescrs().size() );
        PatternDescr pat = (PatternDescr) descrs.getDescrs().get( 1 );
        FieldConstraintDescr fieldConstr = (FieldConstraintDescr) pat.getConstraint().getDescrs().get( 0 );
        VariableRestrictionDescr restr = (VariableRestrictionDescr) fieldConstr.getRestrictions().get( 0 );

        assertEquals( "not memberOf",
                      restr.getEvaluator() );
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                      pattern.getDescrs().size() );
        OrDescr or = (OrDescr) pattern.getDescrs().get( 0 );
        assertEquals( 3,
                      or.getDescrs().size() );

        AndDescr and = (AndDescr) or.getDescrs().get( 0 );
        assertEquals( 2,
                      and.getDescrs().size() );
        FieldConstraintDescr fcd = (FieldConstraintDescr) and.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );
        assertEquals( "<",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "42",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );
        fcd = (FieldConstraintDescr) and.getDescrs().get( 1 );
        assertEquals( "location",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "atlanta",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        and = (AndDescr) or.getDescrs().get( 1 );
        assertEquals( 2,
                      and.getDescrs().size() );
        fcd = (FieldConstraintDescr) and.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );
        assertEquals( ">",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "20",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );
        fcd = (FieldConstraintDescr) and.getDescrs().get( 1 );
        assertEquals( "location",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "Seatle",
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                      pattern.getDescrs().size() );
        OrDescr or1 = (OrDescr) pattern.getDescrs().get( 0 );
        assertEquals( 2,
                      or1.getDescrs().size() );

        AndDescr and1 = (AndDescr) or1.getDescrs().get( 0 );
        assertEquals( 2,
                      and1.getDescrs().size() );
        FieldConstraintDescr fcd = (FieldConstraintDescr) and1.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );
        assertEquals( "<",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "42",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        OrDescr or2 = (OrDescr) and1.getDescrs().get( 1 );
        fcd = (FieldConstraintDescr) or2.getDescrs().get( 0 );
        assertEquals( "location",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "atlanta",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        AndDescr and2 = (AndDescr) or2.getDescrs().get( 1 );
        assertEquals( 2,
                      and2.getDescrs().size() );
        fcd = (FieldConstraintDescr) and2.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );
        assertEquals( ">",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "20",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );
        fcd = (FieldConstraintDescr) and2.getDescrs().get( 1 );
        assertEquals( "location",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "Seatle",
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                      pattern.getDescrs().size() );
        OrDescr or1 = (OrDescr) pattern.getDescrs().get( 0 );
        assertEquals( 3,
                      or1.getDescrs().size() );

        AndDescr and1 = (AndDescr) or1.getDescrs().get( 0 );
        AndDescr and2 = (AndDescr) or1.getDescrs().get( 1 );
        AndDescr and3 = (AndDescr) or1.getDescrs().get( 2 );

        assertEquals( 2,
                      and1.getDescrs().size() );
        FieldConstraintDescr fcd = (FieldConstraintDescr) and1.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "70",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );
        fcd = (FieldConstraintDescr) and1.getDescrs().get( 1 );
        assertEquals( "hair",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "black",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        assertEquals( 2,
                      and2.getDescrs().size() );
        fcd = (FieldConstraintDescr) and2.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "40",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );
        fcd = (FieldConstraintDescr) and2.getDescrs().get( 1 );
        assertEquals( "hair",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "pink",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        assertEquals( 2,
                      and3.getDescrs().size() );
        fcd = (FieldConstraintDescr) and3.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "12",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );
        OrDescr or2 = (OrDescr) and3.getDescrs().get( 1 );
        fcd = (FieldConstraintDescr) or2.getDescrs().get( 0 );
        assertEquals( "hair",
                      fcd.getFieldName() );
        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
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        OrDescr orConstr = (OrDescr) pattern.getDescrs().get( 0 );

        assertEquals( 3,
                      orConstr.getDescrs().size() );

        AndDescr andConstr1 = (AndDescr) orConstr.getDescrs().get( 0 );

        FieldConstraintDescr fcd = (FieldConstraintDescr) andConstr1.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );
        RestrictionConnectiveDescr or = (RestrictionConnectiveDescr) fcd.getRestriction().getRestrictions().get( 0 );
        RestrictionConnectiveDescr and1 = (RestrictionConnectiveDescr) or.getRestrictions().get( 0 );
        RestrictionConnectiveDescr and2 = (RestrictionConnectiveDescr) or.getRestrictions().get( 1 );

        assertEquals( ">",
                      ((LiteralRestrictionDescr) and1.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "60",
                      ((LiteralRestrictionDescr) and1.getRestrictions().get( 0 )).getText() );

        assertEquals( "<",
                      ((LiteralRestrictionDescr) and1.getRestrictions().get( 1 )).getEvaluator() );
        assertEquals( "70",
                      ((LiteralRestrictionDescr) and1.getRestrictions().get( 1 )).getText() );

        assertEquals( ">",
                      ((LiteralRestrictionDescr) and2.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "50",
                      ((LiteralRestrictionDescr) and2.getRestrictions().get( 0 )).getText() );

        assertEquals( "<",
                      ((LiteralRestrictionDescr) and2.getRestrictions().get( 1 )).getEvaluator() );
        assertEquals( "55",
                      ((LiteralRestrictionDescr) and2.getRestrictions().get( 1 )).getText() );

        fcd = (FieldConstraintDescr) andConstr1.getDescrs().get( 1 );
        assertEquals( "hair",
                      fcd.getFieldName() );

        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "black",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        AndDescr andConstr2 = (AndDescr) orConstr.getDescrs().get( 1 );
        assertEquals( 2,
                      andConstr2.getDescrs().size() );
        fcd = (FieldConstraintDescr) andConstr2.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );

        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "40",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        fcd = (FieldConstraintDescr) andConstr2.getDescrs().get( 1 );
        assertEquals( "hair",
                      fcd.getFieldName() );

        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "pink",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        AndDescr andConstr3 = (AndDescr) orConstr.getDescrs().get( 2 );
        assertEquals( 2,
                      andConstr3.getDescrs().size() );
        fcd = (FieldConstraintDescr) andConstr3.getDescrs().get( 0 );
        assertEquals( "age",
                      fcd.getFieldName() );

        assertEquals( "==",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getEvaluator() );
        assertEquals( "12",
                      ((LiteralRestrictionDescr) fcd.getRestrictions().get( 0 )).getText() );

        OrDescr orConstr2 = (OrDescr) andConstr3.getDescrs().get( 1 );

        fcd = (FieldConstraintDescr) orConstr2.getDescrs().get( 0 );
        assertEquals( "hair",
                      fcd.getFieldName() );
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Related Classes of org.drools.lang.descr.AndDescr

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