Package org.drools.lang.descr

Examples of org.drools.lang.descr.FieldConstraintDescr

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        lhs.addDescr( pattern1 );

        final BindingDescr fieldBindingDescr = new BindingDescr( "$type",
                                                                 "type" );

        final FieldConstraintDescr literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "stilton" ) );

        pattern1.addConstraint( fieldBindingDescr );
        pattern1.addConstraint( literalDescr );
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                      fbd.getIdentifier() );
        assertEquals( "name",
                      fbd.getFieldName() );
       
        // then, we have a field constraint
        FieldConstraintDescr fieldConstraintDescr = (FieldConstraintDescr) colList.get( 1 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() );                       
        RestrictionConnectiveDescr root = (RestrictionConnectiveDescr) fieldConstraintDescr.getRestriction();
        assertEquals( 1,
                      root.getRestrictions().size() );
        RestrictionConnectiveDescr or = (RestrictionConnectiveDescr) root.getRestrictions().get( 0 );
        assertEquals( RestrictionConnectiveDescr.OR,
                      or.getConnective() );
       
        List restrictionList = or.getRestrictions();

        assertEquals( 3,
                      restrictionList.size() );

        // first we have a literal restriction
        LiteralRestrictionDescr litDescr = (LiteralRestrictionDescr) restrictionList.get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "yyy",
                      litDescr.getText() );

        // second, we have another literal restriction
        litDescr = (LiteralRestrictionDescr) restrictionList.get( 1 );
        assertEquals( "!=",
                      litDescr.getEvaluator() );
        assertEquals( "zzz",
                      litDescr.getText() );
       
        ReturnValueRestrictionDescr retDescr = (ReturnValueRestrictionDescr) restrictionList.get( 2 );
        assertEquals( "!=",
                      retDescr.getEvaluator() );
       
        LispForm lispForm = ( LispForm ) retDescr.getContent();
        assertEquals("(+ 2 3)", lispForm.toString() );                        

        // ----------------
        // this is how it would be compatible to our core engine
        PredicateDescr predicateDescr = (PredicateDescr) colList.get( 2 );
       
        lispForm = ( LispForm ) predicateDescr.getContent();
        assertEquals("(< 1 2)", lispForm.toString() );               

        // -----------------
        // Parse the second column
        PatternDescr hobbyPattern = (PatternDescr) lhsList.get( 1 );
        assertEquals( "$c",
                      hobbyPattern.getIdentifier() );
        assertEquals( "hobby",
                      hobbyPattern.getObjectType() );

        colList = hobbyPattern.getDescrs();
        assertEquals( 3,
                      colList.size() );

        fbd = (FieldBindingDescr) colList.get( 0 );
        assertEquals( "$bf2",
                      fbd.getIdentifier() );
        assertEquals( "type",
                      fbd.getFieldName() );
       
        fieldConstraintDescr = (FieldConstraintDescr) colList.get( 1 );
        restrictionList = fieldConstraintDescr.getRestrictions();

        assertEquals( "type",
                      fieldConstraintDescr.getFieldName() );

        assertEquals( RestrictionConnectiveDescr.AND,
                      fieldConstraintDescr.getRestriction().getConnective() );

        litDescr = (LiteralRestrictionDescr) restrictionList.get( 0 );
        assertEquals( "!=",
                      litDescr.getEvaluator() );
        assertEquals( "iii",
                      litDescr.getText() );

        fieldConstraintDescr = (FieldConstraintDescr) colList.get( 2 );
        restrictionList = fieldConstraintDescr.getRestrictions();

        assertEquals( "rating",
                      fieldConstraintDescr.getFieldName() );

        litDescr = (LiteralRestrictionDescr) restrictionList.get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "fivestar",
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        PatternDescr col = (PatternDescr) lhsList.get( 0 );
        assertEquals( "$b",
                      col.getIdentifier() );
        assertEquals( "person",
                      col.getObjectType() );
        FieldConstraintDescr fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() ); //        
        LiteralRestrictionDescr litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "yyy",
                      litDescr.getText() );

        OrDescr orDescr = (OrDescr) lhsList.get( 1 );
        assertEquals( 2,
                      orDescr.getDescrs().size() );

        AndDescr andDescr = (AndDescr) orDescr.getDescrs().get( 0 );
        col = (PatternDescr) andDescr.getDescrs().get( 0 );
        assertEquals( "hobby1",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "type",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "qqq1",
                      litDescr.getText() );

        col = (PatternDescr) andDescr.getDescrs().get( 1 );
        assertEquals( "hobby2",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "type",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "!=",
                      litDescr.getEvaluator() );
        assertEquals( "qqq2",
                      litDescr.getText() );

        col = (PatternDescr) orDescr.getDescrs().get( 1 );
        assertEquals( "food",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "veg",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "!=",
                      litDescr.getEvaluator() );
        assertEquals( "shroom",
                      litDescr.getText() );
    }
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                      orDescr.getDescrs().size() );

        PatternDescr col = (PatternDescr) orDescr.getDescrs().get( 0 );
        assertEquals( "hobby1",
                      col.getObjectType() );
        FieldConstraintDescr fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "type",
                      fieldConstraintDescr.getFieldName() ); //        
        LiteralRestrictionDescr litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "qqq1",
                      litDescr.getText() );

        NotDescr notDescr = (NotDescr) orDescr.getDescrs().get( 1 );
        assertEquals( 1,
                      notDescr.getDescrs().size() );
       
        AndDescr andDescr = (AndDescr) notDescr.getDescrs().get( 0 );
        assertEquals( 2, andDescr.getDescrs().size() );
        ExistsDescr existsDescr = (ExistsDescr) andDescr.getDescrs().get( 0 );
        col = (PatternDescr) existsDescr.getDescrs().get( 0 );
        assertEquals( "person",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "ppp",
                      litDescr.getText() );             
       
        col = (PatternDescr) andDescr.getDescrs().get( 1 );
        assertEquals( "person",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "yyy",
                      litDescr.getText() ); 
    }
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        packageDescr.addRule( queryDescr );
        AndDescr lhs = new AndDescr();
        queryDescr.setLhs( lhs );
        PatternDescr pattern = new PatternDescr( Person.class.getName() );
        lhs.addDescr( pattern );
        FieldConstraintDescr literalDescr = new FieldConstraintDescr( "name" );
        literalDescr.addRestriction( new VariableRestrictionDescr( "==",
                                                                   "$name" ) );
        pattern.addConstraint( literalDescr );
       
        literalDescr = new FieldConstraintDescr( "age" );
        literalDescr.addRestriction( new VariableRestrictionDescr( "==",
                                                                   "$age" ) );
        pattern.addConstraint( literalDescr );
       
        literalDescr = new FieldConstraintDescr( "likes" );
        literalDescr.addRestriction( new VariableRestrictionDescr( "==",
                                                                   "$likes" ) );
        pattern.addConstraint( literalDescr );       
       
        RuleDescr ruleDescr = new RuleDescr( "rule-1" );
        packageDescr.addRule( ruleDescr );
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        final PatternDescr pattern = new PatternDescr( Cheese.class.getName(),
                                                       "stilton" );
        lhs.addDescr( pattern );

        final FieldConstraintDescr literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new VariableRestrictionDescr( "==",
                                                                   "$type" ) );

        pattern.addConstraint( literalDescr );

        builder.addPackage( packageDescr );
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                      fbd.getVariable() );
        assertEquals( "name",
                      fbd.getExpression() );
       
        // then, we have a field constraint
        FieldConstraintDescr fieldConstraintDescr = (FieldConstraintDescr) colList.get( 1 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() );
        RestrictionConnectiveDescr root = (RestrictionConnectiveDescr) fieldConstraintDescr.getRestriction();
        assertEquals( 1,
                      root.getRestrictions().size() );
        RestrictionConnectiveDescr or = (RestrictionConnectiveDescr) root.getRestrictions().get( 0 );
        assertEquals( RestrictionConnectiveDescr.OR,
                      or.getConnective() );
       
        List restrictionList = or.getRestrictions();

        assertEquals( 3,
                      restrictionList.size() );

        // first we have a literal restriction
        LiteralRestrictionDescr litDescr = (LiteralRestrictionDescr) restrictionList.get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "yyy",
                      litDescr.getText() );

        // second, we have another literal restriction
        litDescr = (LiteralRestrictionDescr) restrictionList.get( 1 );
        assertEquals( "!=",
                      litDescr.getEvaluator() );
        assertEquals( "zzz",
                      litDescr.getText() );
       
        ReturnValueRestrictionDescr retDescr = (ReturnValueRestrictionDescr) restrictionList.get( 2 );
        assertEquals( "!=",
                      retDescr.getEvaluator() );
       
        LispForm lispForm = ( LispForm ) retDescr.getContent();
        assertEquals("(+ 2 3)", lispForm.toString() );

        // ----------------
        // this is how it would be compatible to our core engine
        PredicateDescr predicateDescr = (PredicateDescr) colList.get( 2 );
       
        lispForm = ( LispForm ) predicateDescr.getContent();
        assertEquals("(< 1 2)", lispForm.toString() );

        // -----------------
        // Parse the second column
        PatternDescr hobbyPattern = (PatternDescr) lhsList.get( 1 );
        assertEquals( "$c",
                      hobbyPattern.getIdentifier() );
        assertEquals( "hobby",
                      hobbyPattern.getObjectType() );

        colList = hobbyPattern.getDescrs();
        assertEquals( 3,
                      colList.size() );

        fbd = (BindingDescr) colList.get( 0 );
        assertEquals( "$bf2",
                      fbd.getVariable() );
        assertEquals( "type",
                      fbd.getExpression() );
       
        fieldConstraintDescr = (FieldConstraintDescr) colList.get( 1 );
        restrictionList = fieldConstraintDescr.getRestrictions();

        assertEquals( "type",
                      fieldConstraintDescr.getFieldName() );

        assertEquals( RestrictionConnectiveDescr.AND,
                      fieldConstraintDescr.getRestriction().getConnective() );

        litDescr = (LiteralRestrictionDescr) restrictionList.get( 0 );
        assertEquals( "!=",
                      litDescr.getEvaluator() );
        assertEquals( "iii",
                      litDescr.getText() );

        fieldConstraintDescr = (FieldConstraintDescr) colList.get( 2 );
        restrictionList = fieldConstraintDescr.getRestrictions();

        assertEquals( "rating",
                      fieldConstraintDescr.getFieldName() );

        litDescr = (LiteralRestrictionDescr) restrictionList.get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "fivestar",
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        PatternDescr col = (PatternDescr) lhsList.get( 0 );
        assertEquals( "$b",
                      col.getIdentifier() );
        assertEquals( "person",
                      col.getObjectType() );
        FieldConstraintDescr fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() ); //        
        LiteralRestrictionDescr litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "yyy",
                      litDescr.getText() );

        OrDescr orDescr = (OrDescr) lhsList.get( 1 );
        assertEquals( 2,
                      orDescr.getDescrs().size() );

        AndDescr andDescr = (AndDescr) orDescr.getDescrs().get( 0 );
        col = (PatternDescr) andDescr.getDescrs().get( 0 );
        assertEquals( "hobby1",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "type",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "qqq1",
                      litDescr.getText() );

        col = (PatternDescr) andDescr.getDescrs().get( 1 );
        assertEquals( "hobby2",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "type",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "!=",
                      litDescr.getEvaluator() );
        assertEquals( "qqq2",
                      litDescr.getText() );

        col = (PatternDescr) orDescr.getDescrs().get( 1 );
        assertEquals( "food",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "veg",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "!=",
                      litDescr.getEvaluator() );
        assertEquals( "shroom",
                      litDescr.getText() );
    }
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                      orDescr.getDescrs().size() );

        PatternDescr col = (PatternDescr) orDescr.getDescrs().get( 0 );
        assertEquals( "hobby1",
                      col.getObjectType() );
        FieldConstraintDescr fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "type",
                      fieldConstraintDescr.getFieldName() ); //        
        LiteralRestrictionDescr litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "qqq1",
                      litDescr.getText() );

        NotDescr notDescr = (NotDescr) orDescr.getDescrs().get( 1 );
        assertEquals( 1,
                      notDescr.getDescrs().size() );
       
        AndDescr andDescr = (AndDescr) notDescr.getDescrs().get( 0 );
        assertEquals( 2, andDescr.getDescrs().size() );
        ExistsDescr existsDescr = (ExistsDescr) andDescr.getDescrs().get( 0 );
        col = (PatternDescr) existsDescr.getDescrs().get( 0 );
        assertEquals( "person",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "ppp",
                      litDescr.getText() );
       
        col = (PatternDescr) andDescr.getDescrs().get( 1 );
        assertEquals( "person",
                      col.getObjectType() );
        fieldConstraintDescr = (FieldConstraintDescr) col.getDescrs().get( 0 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() ); //        
        litDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestrictions().get( 0 );
        assertEquals( "==",
                      litDescr.getEvaluator() );
        assertEquals( "yyy",
                      litDescr.getText() );
    }
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            visit( temp );

            if ( previous == null ) {
                descrString += this.template;
            } else if ( previous instanceof FieldBindingDescr && !(temp instanceof FieldBindingDescr) && !(temp instanceof PredicateDescr) ) {
                final FieldConstraintDescr tempDescr = (FieldConstraintDescr) temp;
                final FieldBindingDescr previousDescr = (FieldBindingDescr) previous;
                if ( tempDescr.getFieldName().equals( previousDescr.getFieldName() ) ) {
                    // as its a binding followed by a field constraint we need to remove
                    // the extra field name                   
                    descrString += this.template.substring( tempDescr.getFieldName().length() + 1 );
                } else {
                    descrString += " , " + this.template;
                }
            } else {
                descrString += " , " + this.template;
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