Examples of org.drools.lang.descr.LiteralRestrictionDescr

org.drools.lang.descr.LiteralRestrictionDescr
This represents a literal node in the rule language. This is a constraint on a single field of a pattern. The "text" contains the content.

            Restriction restriction = null;
            // is it a literal? Does not include enums
            if ( isRightLiteral ) {
                restriction = buildLiteralRestriction( context,
                                                       extractor,
                                                       new LiteralRestrictionDescr( operator,
                                                                                    relDescr.isNegated(),
                                                                                    relDescr.getParameters(),
                                                                                    rightValue,
                                                                                    LiteralRestrictionDescr.TYPE_STRING ) ); // default type
                if ( restriction == null ) {
                    // otherwise we just get wierd errors after this point on literals
                    continue;
                }
            } else {
                // is it an enum?
                int dotPos = rightValue.lastIndexOf( '.' );
                if ( dotPos >= 0 ) {
                    final String mainPart = rightValue.substring( 0,
                                                             dotPos );
                    String lastPart = rightValue.substring( dotPos + 1 );
                    try {
                        final Class< ? > cls = context.getDialect().getTypeResolver().resolveType( mainPart );
                        if ( lastPart.indexOf( '(' ) < 0 && lastPart.indexOf( '.' ) < 0 && lastPart.indexOf( '[' ) < 0 ) {
                            restriction = buildLiteralRestriction( context,
                                                                   extractor,
                                                                   new LiteralRestrictionDescr( operator,
                                                                                                relDescr.isNegated(),
                                                                                                relDescr.getParameters(),
                                                                                                rightValue,
                                                                                                LiteralRestrictionDescr.TYPE_STRING ) ); // default type
                        }

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        final PatternDescr pattern = new PatternDescr( "Cheese",
                                                       "stilton" );
        lhs.addDescr( pattern );


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


        pattern.addConstraint( literalDescr );


        ruleDescr.setConsequence( "String result = stilton.getFieldValue( \"name\" ) + \" \" + stilton.getFieldValue( \"price\" );" );

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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 LiteralRestrictionDescr( "==",
                                                                  "stilton" ) );


        pattern.addConstraint( literalDescr );


        ruleDescr.setConsequence( "update(stilton);" );

View Full Code Here

    }


    public void testNumbers() throws Exception {
        // test boolean
        FieldConstraintDescr literalDescr = new FieldConstraintDescr( "booleanPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "true" ) );
        createLiteralRule( literalDescr );


        // test boolean
        literalDescr = new FieldConstraintDescr( "booleanPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "false" ) );
        createLiteralRule( literalDescr );


        // test char
        literalDescr = new FieldConstraintDescr( "charPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "a" ) );
        createLiteralRule( literalDescr );


        // test byte
        literalDescr = new FieldConstraintDescr( "bytePrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "1" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "bytePrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "0" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "bytePrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "-1" ) );
        createLiteralRule( literalDescr );


        // test short
        literalDescr = new FieldConstraintDescr( "shortPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "1" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "shortPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "0" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "shortPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "-1" ) );
        createLiteralRule( literalDescr );


        // test int
        literalDescr = new FieldConstraintDescr( "intPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "1" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "intPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "0" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "intPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "-1" ) );
        createLiteralRule( literalDescr );


        // test long
        literalDescr = new FieldConstraintDescr( "longPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "1" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "longPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "0" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "longPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "0" ) );
        createLiteralRule( literalDescr );


        // test float
        literalDescr = new FieldConstraintDescr( "floatPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "1.1" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "floatPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "0" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "floatPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "-1.1" ) );
        createLiteralRule( literalDescr );


        // test double
        literalDescr = new FieldConstraintDescr( "doublePrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "1.1" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "doublePrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "0" ) );
        createLiteralRule( literalDescr );


        literalDescr = new FieldConstraintDescr( "floatPrimitive" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  "-1.1" ) );
        createLiteralRule( literalDescr );
    }

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        final PatternDescr patternDescr = new PatternDescr( Cheese.class.getName(),
                                                            "stilton" );


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


        patternDescr.addConstraint( literalDescr );


        ruleDescr.setConsequence( "" );

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        AndDescr lhs = new AndDescr();
        ruleDescr.setLhs( lhs );
        PatternDescr patternDescr = new PatternDescr( Cheese.class.getName(),
                                                      "stilton" );
        FieldConstraintDescr literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "==",
                                                                  null ) );
        patternDescr.addConstraint( literalDescr );
        ruleDescr.setConsequence( "" );


        ruleDescr = new RuleDescr( "rule-1" );
        ruleDescr.setLocation( 42,
                               43 );
        packageDescr.addRule( ruleDescr );
        lhs = new AndDescr();
        ruleDescr.setLhs( lhs );
        patternDescr = new PatternDescr( Cheese.class.getName(),
                                         "stilton" );
        literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "!=",
                                                                  null ) );
        patternDescr.addConstraint( literalDescr );
        ruleDescr.setConsequence( "" );


        ruleDescr = new RuleDescr( "rule-2" );
        ruleDescr.setLocation( 42,
                               43 );
        packageDescr.addRule( ruleDescr );
        lhs = new AndDescr();
        ruleDescr.setLhs( lhs );
        patternDescr = new PatternDescr( Cheese.class.getName(),
                                         "stilton" );


        literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new LiteralRestrictionDescr( "!=",
                                                                  null ) );


        patternDescr.addConstraint( literalDescr );
        ruleDescr.setConsequence( "" );

View Full Code Here


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


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


        pattern1.addConstraint( fieldBindingDescr );
        pattern1.addConstraint( literalDescr );

View Full Code Here


        final PatternDescr patternDescr = new PatternDescr( Cheese.class.getName(),
                                                            "stilton" );


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


        patternDescr.addConstraint( literalDescr );


        ceDescr.addDescr( patternDescr );

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        PatternDescr pattern = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( 1,
                      pattern.getConstraint().getDescrs().size() );
        AndDescr fieldAnd = (AndDescr) pattern.getConstraint();
        FieldConstraintDescr fld = (FieldConstraintDescr) fieldAnd.getDescrs().get( 0 );
        LiteralRestrictionDescr lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );


        assertEquals( "==",
                      lit.getEvaluator() );
        assertEquals( "false",
                      lit.getText() );
        assertEquals( "bar",
                      fld.getFieldName() );


        pattern = (PatternDescr) lhs.getDescrs().get( 1 );
        assertEquals( 1,
                      pattern.getConstraint().getDescrs().size() );


        fieldAnd = (AndDescr) pattern.getConstraint();
        fld = (FieldConstraintDescr) fieldAnd.getDescrs().get( 0 );
        lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );


        assertEquals( ">",
                      lit.getEvaluator() );
        assertEquals( "-42",
                      lit.getText() );
        assertEquals( "boo",
                      fld.getFieldName() );


        pattern = (PatternDescr) lhs.getDescrs().get( 2 );
        assertEquals( 1,
                      pattern.getConstraint().getDescrs().size() );


        // lit = (LiteralDescr) col.getDescrs().get( 0 );


        fieldAnd = (AndDescr) pattern.getConstraint();
        fld = (FieldConstraintDescr) fieldAnd.getDescrs().get( 0 );
        lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );
        assertEquals( ">",
                      lit.getEvaluator() );
        assertEquals( "-42.42",
                      lit.getText() );
        assertEquals( "boo",
                      fld.getFieldName() );
    }

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


        AndDescr fieldAnd = (AndDescr) first.getConstraint();
        FieldConstraintDescr fld = (FieldConstraintDescr) fieldAnd.getDescrs().get( 0 );
        LiteralRestrictionDescr constraint = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );


        assertNotNull( constraint );


        assertEquals( "a",
                      fld.getFieldName() );
        assertEquals( "==",
                      constraint.getEvaluator() );
        assertEquals( "3",
                      constraint.getText() );


        // Check second pattern
        final PatternDescr second = (PatternDescr) lhs.getDescrs().get( 1 );
        assertEquals( "foo4",
                      second.getIdentifier() );
        assertEquals( "Bar",
                      second.getObjectType() );


        // System.err.println( second.getDescrs() );


        fieldAnd = (AndDescr) second.getConstraint();
        assertEquals( 2,
                      fieldAnd.getDescrs().size() );


        final FieldBindingDescr fieldBindingDescr = (FieldBindingDescr) fieldAnd.getDescrs().get( 0 );
        assertEquals( "a",
                      fieldBindingDescr.getFieldName() );
        assertEquals( "a4",
                      fieldBindingDescr.getIdentifier() );


        fld = (FieldConstraintDescr) fieldAnd.getDescrs().get( 1 );
        constraint = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );


        assertNotNull( constraint );


        assertEquals( "a",
                      fld.getFieldName() );
        assertEquals( "==",
                      constraint.getEvaluator() );
        assertEquals( "4",
                      constraint.getText() );


        // Check third pattern
        final PatternDescr third = (PatternDescr) lhs.getDescrs().get( 2 );
        assertNull( third.getIdentifier() );
        assertEquals( "Baz",

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