2 * Copyright 2005-2011 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.xmlrouter.config;
18 import org.wamblee.xml.XMLDocument;
19 import org.wamblee.xml.XMLException;
20 import org.wamblee.xml.XMLProcessor;
21 import org.wamblee.xml.XPathExpression;
24 * Basic rule for XML routing.
26 * @author Erik Brakkee
30 private XPathExpression condition;
31 private XMLProcessor processor;
32 private String destination;
35 * Constructs the rule.
36 * @param aCondition Condition to be satisfied.
37 * @param aProcessor XML Processor to be applied when the condition is valid.
38 * @param aDestination Destination for the result of this rule.
40 public Rule(XPathExpression aCondition, XMLProcessor aProcessor, String aDestination) {
41 condition = aCondition;
42 processor = aProcessor;
43 destination = aDestination;
47 * Applies the rule to a document.
48 * @param aDocument Document to apply rule ot.
49 * @return Transformed document or null if the rule did not apply.
50 * @throws XMLException In case the application of the rule gives an error.
52 public XMLDocument apply(XMLDocument aDocument) throws XMLException {
53 if ( !condition.booleanEval(aDocument)) {
56 return aDocument.process(processor);
59 public String getDestination() {