Package org.drools.lang.descr

Examples of org.drools.lang.descr.PredicateDescr

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

        final FieldBindingDescr field = (FieldBindingDescr) constraints.get( 0 );
        final PredicateDescr predicate = (PredicateDescr) constraints.get( 1 );
        assertEquals( "$var",
                      field.getIdentifier() );
        assertEquals( "attr",
                      field.getFieldName() );
        assertEquals( " $var.equals(\"xyz\") ",
                      predicate.getContent() );
    }
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        final List constraints = pattern.getConstraint().getDescrs();
        assertEquals( 1,
                      constraints.size() );

        final PredicateDescr predicate = (PredicateDescr) constraints.get( 0 );
        assertEquals( " $var.equals(\"xyz\") ",
                      predicate.getContent() );
    }
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        if ( d instanceof AtomicExprDescr ) {
            Matcher m = evalRegexp.matcher( ((AtomicExprDescr) d).getExpression() );
            if ( m.find() ) {
                // MVELDumper already stripped the eval
                // this will build the eval using the specified dialect
                PredicateDescr pdescr = new PredicateDescr( context.getRuleDescr().getResource(), expr );
                pdescr.copyLocation( d );
                buildEval( context, pattern, pdescr, aliases, expr, true );
                return true;
            }
        }
        return false;
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                                          Map<String, OperatorDescr> aliases ) {
        Dialect dialect = context.getDialect();
        MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
        context.setDialect( mvelDialect );

        PredicateDescr pdescr = new PredicateDescr( context.getRuleDescr().getResource(), expr );
        pdescr.copyParameters( base );
        pdescr.copyLocation( base );
        buildEval( context, pattern, pdescr, aliases, expr, false );

        // fall back to original dialect
        context.setDialect(dialect);
    }
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        if ( d instanceof AtomicExprDescr ) {
            Matcher m = evalRegexp.matcher( ((AtomicExprDescr) d).getExpression() );
            if ( m.find() ) {
                // MVELDumper already stripped the eval
                // this will build the eval using the specified dialect
                PredicateDescr pdescr = new PredicateDescr( expr );
                pdescr.copyLocation( d );
                buildEval( context,
                           pattern,
                           pdescr,
                           null,
                           aliases );
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                                          Map<String, OperatorDescr> aliases ) {
        Dialect dialect = context.getDialect();
        MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
        context.setDialect( mvelDialect );

        PredicateDescr pdescr = new PredicateDescr( expr );
        pdescr.copyLocation( base );
        buildEval( context,
                   pattern,
                   pdescr,
                   null,
                   aliases );
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        // analyze field type:
        Class resultType = getFieldReturnType( pattern,
                                               fieldConstraintDescr );

        PredicateDescr predicateDescr = new PredicateDescr();
        MVELDumper dumper = new MVELDumper();
        predicateDescr.setContent( dumper.dump( fieldConstraintDescr,
                                                Date.class.isAssignableFrom( resultType ) ) );

        build( context,
               pattern,
               predicateDescr,
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                        final String localName,
                        final Attributes attrs,
                        final ExtensibleXmlParser parser) throws SAXException {
        parser.startElementBuilder( localName,
                                    attrs );
        final PredicateDescr predicateDescr = new PredicateDescr();

        return predicateDescr;
    }
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    public Object end(final String uri,
                      final String localName,
                      final ExtensibleXmlParser parser) throws SAXException {
        final Element element = parser.endElementBuilder();

        final PredicateDescr predicateDescr = (PredicateDescr) parser.getCurrent();

        final String expression =((org.w3c.dom.Text)element.getChildNodes().item( 0 )).getWholeText();

        if ( expression == null || expression.trim().equals( "" ) ) {
            throw new SAXParseException( "<predicate> must have some content",
                                         parser.getLocator() );
        }

        predicateDescr.setContent( expression );

        final PatternDescr patternDescr = (PatternDescr) parser.getParent();

        patternDescr.addConstraint( predicateDescr );
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        if ( d instanceof AtomicExprDescr ) {
            Matcher m = evalRegexp.matcher( ((AtomicExprDescr) d).getExpression() );
            if ( m.find() ) {
                // MVELDumper already stripped the eval
                // this will build the eval using the specified dialect
                PredicateDescr pdescr = new PredicateDescr( expr );
                pdescr.copyLocation( d );
                buildEval( context,
                           pattern,
                           pdescr,
                           null,
                           aliases );
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Related Classes of org.drools.lang.descr.PredicateDescr

  • org.drools.clips.LhsClpParserTest
  • org.drools.compiler.PackageBuilderTest
  • org.drools.compiler.xml.rules.PredicateHandler
  • org.drools.compiler.xml.rules.XmlPackageReaderTest
  • org.drools.lang.RuleParserTest
  • org.drools.rule.builder.ConstraintBuilder
  • org.drools.rule.builder.dialect.asm.AbstractASMEvalBuilder
  • org.drools.rule.builder.dialect.clips.ClipsDialect
  • org.drools.rule.builder.dialect.mvel.MVELPredicateBuilderTest
  • org.drools.rule.builder.MVELConstraintBuilder
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