Package org.drools.lang.descr

Examples of org.drools.lang.descr.FieldBindingDescr

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        final RuleDescr rule = (RuleDescr) pack.getRules().get( 0 );
        assertEquals( 2,
                      rule.getLhs().getDescrs().size() );

        PatternDescr pattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        final FieldBindingDescr fieldBinding = (FieldBindingDescr) pattern.getConstraint().getDescrs().get( 0 );
        assertEquals( "$likes",
                      fieldBinding.getIdentifier() );

        final NotDescr not = (NotDescr) rule.getLhs().getDescrs().get( 1 );
        pattern = (PatternDescr) not.getDescrs().get( 0 );

        final FieldConstraintDescr fld = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
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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( " $var.equals(\"xyz\") ",
                      predicate.getContent() );
    }
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        PatternDescr patternDescr = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( "$r",
                      patternDescr.getIdentifier() );
        assertEquals( 4,
                      patternDescr.getDescrs().size() );
        FieldBindingDescr nameBind = (FieldBindingDescr) patternDescr.getDescrs().get( 0 );
        assertEquals( "$n", nameBind.getIdentifier() );
        assertEquals( "name", nameBind.getFieldName() );
        FieldConstraintDescr fieldConstraintDescr = (FieldConstraintDescr) patternDescr.getDescrs().get( 1 );
        assertEquals( "name",
                      fieldConstraintDescr.getFieldName() );
        assertEquals( 1,
                      fieldConstraintDescr.getRestriction().getRestrictions().size() );
        LiteralRestrictionDescr literalRestrictionDescr = (LiteralRestrictionDescr) fieldConstraintDescr.getRestriction().getRestrictions().get( 0 );
        assertEquals( "==",
                      literalRestrictionDescr.getEvaluator() );
        assertEquals( "Bob",
                      literalRestrictionDescr.getText() );
       
        FieldBindingDescr ageBind = (FieldBindingDescr) patternDescr.getDescrs().get( 2 );
        assertEquals( "$a", ageBind.getIdentifier() );
        assertEquals( "age", ageBind.getFieldName() );
        fieldConstraintDescr = (FieldConstraintDescr) patternDescr.getDescrs().get( 3 );
        assertEquals( "age",
                      fieldConstraintDescr.getFieldName() );
        assertEquals( 1,
                      fieldConstraintDescr.getRestriction().getRestrictions().size() );
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            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;
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     * @return
     */
    private Declaration createDeclarationObject(final RuleBuildContext context,
                                                final String identifier,
                                                final Pattern pattern) {
        final FieldBindingDescr implicitBinding = new FieldBindingDescr( identifier,
                                                                         identifier );

        final FieldExtractor extractor = getFieldExtractor( context,
                                                            implicitBinding,
                                                            pattern.getObjectType(),
                                                            implicitBinding.getFieldName(),
                                                            false );
        if ( extractor == null ) {
            return null;
        }

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        if ( fieldName == null || fieldName.trim().equals( "" ) ) {
            throw new SAXParseException( "<field-binding> requires a 'field-name' attribute",
                                         this.xmlPackageReader.getLocator() );
        }

        final FieldBindingDescr fieldBindingDescr = new FieldBindingDescr( fieldName,
                                                                           identifier );

        return fieldBindingDescr;
    }
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    public Object end(final String uri,
                      final String localName) throws SAXException {
        final Configuration config = this.xmlPackageReader.endConfiguration();

        final FieldBindingDescr fieldBindingDescr = (FieldBindingDescr) this.xmlPackageReader.getCurrent();

        final LinkedList parents = this.xmlPackageReader.getParents();
        final ListIterator it = parents.listIterator( parents.size() );
        it.previous();
        final PatternDescr patternDescr = (PatternDescr) it.previous();
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        final PatternDescr pattern = new PatternDescr( Cheese.class.getName(),
                                                       "stilton" );
        lhs.addDescr( pattern );

        FieldBindingDescr fieldBindingDescr = new FieldBindingDescr( "price",
                                                                     "x" );
        pattern.addConstraint( fieldBindingDescr );
        fieldBindingDescr = new FieldBindingDescr( "price",
                                                   "y" );
        pattern.addConstraint( fieldBindingDescr );

        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );
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        final PatternDescr pattern = new PatternDescr( Cheese.class.getName(),
                                                       "stilton" );
        lhs.addDescr( pattern );

        FieldBindingDescr fieldBindingDescr = new FieldBindingDescr( "price",
                                                                     "x" );
        pattern.addConstraint( fieldBindingDescr );
        fieldBindingDescr = new FieldBindingDescr( "price",
                                                   "y" );
        pattern.addConstraint( fieldBindingDescr );

        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );
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        final PatternDescr pattern = new PatternDescr( Cheese.class.getName(),
                                                       "stilton" );
        lhs.addDescr( pattern );

        final FieldBindingDescr fieldBindingDescr = new FieldBindingDescr( "price",
                                                                           "x" );
        pattern.addConstraint( fieldBindingDescr );

        final FieldBindingDescr fieldBindingDescr2 = new FieldBindingDescr( "price",
                                                                            "y" );
        pattern.addConstraint( fieldBindingDescr2 );

        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );
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Related Classes of org.drools.lang.descr.FieldBindingDescr

  • org.drools.clips.LhsClpParserTest
  • org.drools.compiler.PackageBuilderTest
  • org.drools.compiler.QueryBuilderTest
  • org.drools.compiler.xml.rules.FieldBindingHandler
  • org.drools.compiler.xml.rules.XmlPackageReaderTest
  • org.drools.lang.DrlDumper
  • org.drools.lang.RuleParserTest
  • org.drools.rule.builder.dialect.java.JavaAccumulateBuilderTest
  • org.drools.rule.builder.PatternBuilder
  • org.drools.xml.FieldBindingHandler
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