Examples of org.drools.lang.descr.FieldConstraintDescr

org.drools.lang.descr.FieldConstraintDescr
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, which may also be an enumeration.

        final PatternDescr col = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( "Foo",
                      col.getObjectType() );
        assertEquals( 1,
                      col.getConstraint().getDescrs().size() );
        final FieldConstraintDescr fld = (FieldConstraintDescr) col.getConstraint().getDescrs().get( 0 );
        final QualifiedIdentifierRestrictionDescr lit = (QualifiedIdentifierRestrictionDescr) fld.getRestrictions().get( 0 );


        assertEquals( "bar",
                      fld.getFieldName() );
        assertEquals( "==",
                      lit.getEvaluator() );
        assertEquals( "Foo.BAR",
                      lit.getText() );
    }

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                                            text );


        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() );
        assertFalse( restr.isNegated() );
        assertEquals( "$cities",

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                                            text );


        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() );
        assertTrue( restr.isNegated() );
        assertEquals( "$cities",

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        assertEquals( "Person",
                      pattern.getObjectType() );
        assertEquals( 1,
                      pattern.getConstraint().getDescrs().size() );


        FieldConstraintDescr fld = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        assertEquals( RestrictionConnectiveDescr.AND,
                      fld.getRestriction().getConnective() );
        assertEquals( 2,
                      fld.getRestrictions().size() );
        assertEquals( "age",
                      fld.getFieldName() );


        LiteralRestrictionDescr lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );
        assertEquals( ">",
                      lit.getEvaluator() );
        assertEquals( "30",
                      lit.getText() );


        lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 1 );
        assertEquals( "<",
                      lit.getEvaluator() );
        assertEquals( "40",
                      lit.getText() );


        // the second col, with 2 fields, the first with 2 restrictions, the
        // second field with one
        pattern = (PatternDescr) rule.getLhs().getDescrs().get( 1 );
        assertEquals( "Vehicle",
                      pattern.getObjectType() );
        assertEquals( 2,
                      pattern.getConstraint().getDescrs().size() );


        fld = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        assertEquals( "type",
                      fld.getFieldName() );
        assertEquals( 1,
                      fld.getRestrictions().size() );


        RestrictionConnectiveDescr or = (RestrictionConnectiveDescr) fld.getRestrictions().get( 0 );
        assertEquals( RestrictionConnectiveDescr.OR,
                      or.getConnective() );
        assertEquals( 2,
                      or.getRestrictions().size() );


        lit = (LiteralRestrictionDescr) or.getRestrictions().get( 0 );
        assertEquals( "==",
                      lit.getEvaluator() );
        assertEquals( "sedan",
                      lit.getText() );


        lit = (LiteralRestrictionDescr) or.getRestrictions().get( 1 );
        assertEquals( "==",
                      lit.getEvaluator() );
        assertEquals( "wagon",
                      lit.getText() );


        // now the second field
        fld = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 1 );
        assertEquals( 1,
                      fld.getRestrictions().size() );
        lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );
        assertEquals( "<",
                      lit.getEvaluator() );
        assertEquals( "3",
                      lit.getText() );

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        assertEquals( "Person",
                      pattern.getObjectType() );
        assertEquals( 1,
                      pattern.getConstraint().getDescrs().size() );


        FieldConstraintDescr fld = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        assertEquals( 2,
                      fld.getRestrictions().size() );
        assertEquals( "age",
                      fld.getFieldName() );


        LiteralRestrictionDescr lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );
        assertEquals( ">",
                      lit.getEvaluator() );
        assertEquals( "30",
                      lit.getText() );


        lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 1 );
        assertEquals( "<",
                      lit.getEvaluator() );
        assertEquals( "40",
                      lit.getText() );


        // the second col, with 2 fields, the first with 2 restrictions, the
        // second field with one
        pattern = (PatternDescr) rule.getLhs().getDescrs().get( 1 );
        assertEquals( "Vehicle",
                      pattern.getObjectType() );
        assertEquals( 2,
                      pattern.getConstraint().getDescrs().size() );


        fld = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        assertEquals( 2,
                      fld.getRestrictions().size() );
        lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );
        assertEquals( "type",
                      fld.getFieldName() );
        assertEquals( "!=",
                      lit.getEvaluator() );
        assertEquals( "sedan",
                      lit.getText() );


        lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 1 );
        assertEquals( "!=",
                      lit.getEvaluator() );
        assertEquals( "wagon",
                      lit.getText() );


        // now the second field
        fld = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 1 );
        assertEquals( 1,
                      fld.getRestrictions().size() );
        lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );
        assertEquals( "<",
                      lit.getEvaluator() );
        assertEquals( "3",
                      lit.getText() );

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        pattern.addConstraint( fieldBindingDescr );


        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );


        final FieldConstraintDescr returnValue = new FieldConstraintDescr( "price" );
        returnValue.addRestriction( new ReturnValueRestrictionDescr( "==",
                                                                     "x" ) );


        pattern.addConstraint( returnValue );


        // There is no m this should produce errors.

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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);" );

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        pattern.addConstraint( fieldBindingDescr );


        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );


        final FieldConstraintDescr returnValue = new FieldConstraintDescr( "price" );
        returnValue.addRestriction( new ReturnValueRestrictionDescr( "==",
                                                                     "(( (Integer) map.get( new Integer( x )) ).intValue() * y)" ) );


        pattern.addConstraint( returnValue );


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

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        final LiteralConstraint literalConstarint = (LiteralConstraint) pattern.getConstraints().get( 0 );
    }


    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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org.drools.compiler.xml.rules.QualifiedIdentifierRestrictionHandler

org.drools.compiler.xml.rules.RestrictionConnectiveHandler

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