diff options
author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2010-10-04 14:45:31 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2010-10-04 14:45:31 +0000 |
commit | fdeb31bbf8fe1d887ab47e6204952b8e118ab1ef (patch) | |
tree | e70013b67c533219aa45b2ff0a0d2bf64e24b7e7 /sca-java-2.x/tags/2.0-M5.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java | |
parent | 56f0d297c6eba38d5187431ed9319a97ff5d6094 (diff) |
Renaming 2.0-M5.1 releasi cadidate release tag
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1004266 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-java-2.x/tags/2.0-M5.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java')
-rw-r--r-- | sca-java-2.x/tags/2.0-M5.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-M5.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java b/sca-java-2.x/tags/2.0-M5.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java new file mode 100644 index 0000000000..10f142c67b --- /dev/null +++ b/sca-java-2.x/tags/2.0-M5.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java @@ -0,0 +1,158 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.policy.xml; + +import java.util.Arrays; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.logging.Level; +import java.util.logging.Logger; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.xpath.XPathFunction; +import javax.xml.xpath.XPathFunctionException; + +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +/** + * The SCA-defined XPath function + */ +public class PolicyXPathFunction implements XPathFunction { + private static Logger logger = Logger.getLogger(PolicyXPathFunction.class.getName()); + + static final QName InterfaceRef = new QName(PolicyConstants.SCA11_NS, "InterfaceRef"); + static final QName OperationRef = new QName(PolicyConstants.SCA11_NS, "OperationRef"); + static final QName MessageRef = new QName(PolicyConstants.SCA11_NS, "MessageRef"); + static final QName IntentRefs = new QName(PolicyConstants.SCA11_NS, "IntentRefs"); + static final QName URIRef = new QName(PolicyConstants.SCA11_NS, "URIRef"); + + static final Set<QName> functions = + new HashSet<QName>(Arrays.asList(InterfaceRef, OperationRef, MessageRef, IntentRefs, URIRef)); + + private NamespaceContext namespaceContext; + private final QName functionName; + + public PolicyXPathFunction(NamespaceContext namespaceContext, QName functionName) { + super(); + this.namespaceContext = namespaceContext; + this.functionName = functionName; + } + + private Node getContextNode(List args) { + if (args.size() >= 2) { + NodeList nodeList = (NodeList)args.get(1); + if (nodeList.getLength() > 0) { + return nodeList.item(0); + } + } + return null; + } + + public Object evaluate(List args) throws XPathFunctionException { + if (logger.isLoggable(Level.FINE)) { + logger.fine(functionName + "(" + args + ")"); + } + + String arg = (String)args.get(0); + Node node = getContextNode(args); + if (InterfaceRef.equals(functionName)) { + return evaluateInterface(arg, node); + } else if (OperationRef.equals(functionName)) { + String[] params = arg.split("/"); + if (params.length != 2) { + throw new IllegalArgumentException("Invalid argument: " + arg); + } + String interfaceName = params[0]; + String operationName = params[1]; + return evaluateOperation(interfaceName, operationName, node); + } else if (MessageRef.equals(functionName)) { + String[] params = arg.split("/"); + if (params.length != 3) { + throw new IllegalArgumentException("Invalid argument: " + arg); + } + String interfaceName = params[0]; + String operationName = params[1]; + String messageName = params[2]; + return evaluateMessage(interfaceName, operationName, messageName, node); + } else if (URIRef.equals(functionName)) { + return evaluateURI(arg, node); + } else if (IntentRefs.equals(functionName)) { + String[] intents = arg.split("(\\s)+"); + return evaluateIntents(intents, node); + } else { + return Boolean.FALSE; + } + } + + private Boolean evaluateInterface(String interfaceName, Node node) { + return Boolean.FALSE; + } + + private Boolean evaluateOperation(String interfaceName, String operationName, Node node) { + return Boolean.FALSE; + } + + private Boolean evaluateMessage(String interfaceName, String operationName, String messageName, Node node) { + return Boolean.FALSE; + } + + private Boolean evaluateURI(String uri, Node node) { + return Boolean.FALSE; + } + + private Boolean evaluateIntents(String[] intents, Node node) { + return Boolean.FALSE; + } + + private static Pattern FUNCTION; + static { + String functionPattern = "(URIRef|InterfaceRef|OperationRef|MessageRef|IntentRefs)\\s*\\((.*)\\)"; + FUNCTION = Pattern.compile(functionPattern); + } + + public static String normalize(String attachTo) { + Matcher matcher = FUNCTION.matcher(attachTo); + boolean result = matcher.find(); + if (result) { + StringBuffer sb = new StringBuffer(); + do { + String function = matcher.group(1); + String args = matcher.group(2); + String replacement = null; + if (args.trim().length() > 0) { + replacement = function + "(" + args + "," + "self::node())"; + } else { + replacement = function + "(self::node())"; + } + matcher.appendReplacement(sb, replacement); + result = matcher.find(); + } while (result); + matcher.appendTail(sb); + return sb.toString(); + } + return attachTo; + } + +} |