Package org.drools.lang.descr

Examples of org.drools.lang.descr.PatternDescr

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    public void testDump() throws Exception {
        String input = "Cheese( price > 10 && < 20 || == $val || == 30 )";
        String expected = "( ( price > 10 && price < 20 ) || price == $val || price == 30 )" ;
        DRLParser parser = parse( input );
        PatternDescr pattern = (PatternDescr) parser.fact( null );
       
        FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        String result = dumper.dump( fieldDescr );
       
        assertEquals( expected, result );
    }
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    public void testDumpMatches() throws Exception {
        String input = "Cheese( type.toString matches \"something\\swith\\tsingle escapes\" )";
        String expected = "type.toString ~= \"something\\\\swith\\\\tsingle escapes\"" ;
        DRLParser parser = parse( input );
        PatternDescr pattern = (PatternDescr) parser.fact( null );
       
        FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        String result = dumper.dump( fieldDescr );
       
        assertEquals( expected, result );
    }
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    public void testDumpMatches2() throws Exception {
        String input = "Cheese( type.toString matches 'something\\swith\\tsingle escapes' )";
        String expected = "type.toString ~= \"something\\\\swith\\\\tsingle escapes\"" ;
        DRLParser parser = parse( input );
        PatternDescr pattern = (PatternDescr) parser.fact( null );
       
        FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        String result = dumper.dump( fieldDescr );
       
        assertEquals( expected, result );
    }
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    public void testDumpMatches3() throws Exception {
        String input = "Map( this[\"content\"] matches \"hello ;=\" )";
        String expected = "this[\"content\"] ~= \"hello ;=\"" ;
        DRLParser parser = parse( input );
        PatternDescr pattern = (PatternDescr) parser.fact( null );
       
        FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        String result = dumper.dump( fieldDescr );
       
        assertEquals( expected, result );
    }
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    public void testDumpWithDateAttr() throws Exception {
        String input = "Person( son.birthDate == \"01-jan-2000\" )";
        String expected = "son.birthDate == org.drools.base.evaluators.DateFactory.parseDate( \"01-jan-2000\" )" ;
        DRLParser parser = parse( input );
        PatternDescr pattern = (PatternDescr) parser.fact( null );
       
        FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
        String result = dumper.dump( fieldDescr, true );
       
        assertEquals( expected, result );
    }
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        assertEquals( "Person",
                      pattern.getObjectType() );
    }

    public void testPredicate() throws Exception {
        final PatternDescr pattern = new PatternDescr();
        parse( "$var : attr -> ( $var.equals(\"xyz\") )" ).constraints( pattern );

        assertFalse( this.parser.getErrorMessages().toString(),
                     this.parser.hasErrors() );

        final List constraints = pattern.getConstraint().getDescrs();
        assertEquals( 2,
                      constraints.size() );

        final FieldBindingDescr field = (FieldBindingDescr) constraints.get( 0 );
        final PredicateDescr predicate = (PredicateDescr) constraints.get( 1 );
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        assertEquals( " $var.equals(\"xyz\") ",
                      predicate.getContent() );
    }

    public void testPredicate2() throws Exception {
        final PatternDescr pattern = new PatternDescr();
        // predicates are also prefixed by the eval keyword
        parse( "eval( $var.equals(\"xyz\") )" ).constraints( pattern );

        assertFalse( this.parser.getErrorMessages().toString(),
                     this.parser.hasErrors() );

        final List constraints = pattern.getConstraint().getDescrs();
        assertEquals( 1,
                      constraints.size() );

        final PredicateDescr predicate = (PredicateDescr) constraints.get( 0 );
        assertEquals( " $var.equals(\"xyz\") ",
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        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 );

        assertEquals( state.getObjectType(),
                      "State" );
        assertEquals( person.getObjectType(),
                      "Person" );
        assertEquals( cheese.getObjectType(),
                      "Cheese" );
        assertEquals( person2.getObjectType(),
                      "Person" );
        assertEquals( cheese2.getObjectType(),
                      "Cheese" );
        assertEquals( cheese3.getObjectType(),
                      "Cheese" );
    }
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        final ForallDescr forall = (ForallDescr) rule.getLhs().getDescrs().get( 0 );

        assertEquals( 2,
                      forall.getDescrs().size() );
        final PatternDescr pattern = forall.getBasePattern();
        assertEquals( "Person",
                      pattern.getObjectType() );
        final List remaining = forall.getRemainingPatterns();
        assertEquals( 1,
                      remaining.size() );
        final PatternDescr cheese = (PatternDescr) remaining.get( 0 );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
    }
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        }
        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() );
        assertEquals( "$cities",
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Related Classes of org.drools.lang.descr.PatternDescr

  • org.drools.clips.LhsClpParserTest
  • org.drools.compiler.PackageBuilder
  • org.drools.compiler.PackageBuilderTest
  • org.drools.compiler.QueryBuilderTest
  • org.drools.compiler.xml.rules.AccumulateHandler
  • org.drools.compiler.xml.rules.CollectHandler
  • org.drools.compiler.xml.rules.ExprConstraintHandler
  • org.drools.compiler.xml.rules.FieldBindingHandler
  • org.drools.compiler.xml.rules.FieldConstraintHandler
  • org.drools.compiler.xml.rules.FromHandler
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