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-rw-r--r--java/sca/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java61
-rw-r--r--java/sca/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunctionResolver.java69
-rw-r--r--java/sca/modules/policy-xml/src/test/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunctionResolverTestCase.java100
-rw-r--r--java/sca/modules/policy-xml/src/test/resources/org/apache/tuscany/sca/policy/xml/Calculator.composite49
4 files changed, 279 insertions, 0 deletions
diff --git a/java/sca/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java b/java/sca/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java
new file mode 100644
index 0000000000..ffabad5644
--- /dev/null
+++ b/java/sca/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunction.java
@@ -0,0 +1,61 @@
+/*
+ * 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 javax.xml.namespace.NamespaceContext;
+import javax.xml.namespace.QName;
+import javax.xml.xpath.XPathFunction;
+import javax.xml.xpath.XPathFunctionException;
+
+/**
+ * The SCA-defined XPath function
+ */
+public class PolicyXPathFunction implements XPathFunction {
+ 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;
+ }
+
+ public Object evaluate(List args) throws XPathFunctionException {
+ // FIXME: [rfeng] To be implemented
+ String arg = (String)args.get(0);
+ System.out.println(functionName + "(" + arg + ")");
+ return Boolean.FALSE;
+ }
+
+}
diff --git a/java/sca/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunctionResolver.java b/java/sca/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunctionResolver.java
new file mode 100644
index 0000000000..733b208de7
--- /dev/null
+++ b/java/sca/modules/policy-xml/src/main/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunctionResolver.java
@@ -0,0 +1,69 @@
+/*
+ * 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 javax.xml.namespace.NamespaceContext;
+import javax.xml.namespace.QName;
+import javax.xml.xpath.XPathFunction;
+import javax.xml.xpath.XPathFunctionResolver;
+
+/**
+ * A resolver that handles SCA-defined XPath functions
+ *
+ * Interface Related Functions
+ * <ul>
+ * <li>InterfaceRef( InterfaceName )
+ * <li>OperationRef( InterfaceName/OperationName )
+ * <li>MessageRef( InterfaceName/OperationName/MessageName )
+ * </ul>
+ *
+ * Intent Related Functions
+ * <ul>
+ * <li>IntentRefs( IntentList )
+ * </ul>
+ *
+ * URI Based Function
+ * <ul>
+ * <li>URIRef( URI )
+ * </ul>
+ */
+public class PolicyXPathFunctionResolver implements XPathFunctionResolver {
+ private NamespaceContext namespaceContext;
+
+ public PolicyXPathFunctionResolver(NamespaceContext namespaceContext) {
+ super();
+ this.namespaceContext = namespaceContext;
+ }
+
+ public XPathFunction resolveFunction(QName functionName, int arity) {
+ if (functionName == null) {
+ throw new NullPointerException("Function name is null");
+ }
+ if (PolicyXPathFunction.functions.contains(functionName)) {
+ if (arity == 1) {
+ return new PolicyXPathFunction(namespaceContext, functionName);
+ } else {
+ return null;
+ }
+ }
+ return null;
+ }
+
+}
diff --git a/java/sca/modules/policy-xml/src/test/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunctionResolverTestCase.java b/java/sca/modules/policy-xml/src/test/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunctionResolverTestCase.java
new file mode 100644
index 0000000000..fea1afb941
--- /dev/null
+++ b/java/sca/modules/policy-xml/src/test/java/org/apache/tuscany/sca/policy/xml/PolicyXPathFunctionResolverTestCase.java
@@ -0,0 +1,100 @@
+/*
+ * 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.Collections;
+import java.util.Iterator;
+
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathExpression;
+import javax.xml.xpath.XPathFactory;
+
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+
+/**
+ *
+ */
+public class PolicyXPathFunctionResolverTestCase {
+ private static XPathFactory factory;
+
+ /**
+ * @throws java.lang.Exception
+ */
+ @BeforeClass
+ public static void setUpBeforeClass() throws Exception {
+ factory = XPathFactory.newInstance();
+ }
+
+ @Test
+ public void testXPath() throws Exception {
+ XPath xpath = factory.newXPath();
+ xpath.setNamespaceContext(new NamespaceContextImpl());
+ xpath.setXPathFunctionResolver(new PolicyXPathFunctionResolver(xpath.getNamespaceContext()));
+ InputSource xml = new InputSource(getClass().getResourceAsStream("Calculator.composite"));
+ XPathExpression exp = xpath.compile("//sca:composite//sca:component[sca:IntentRefs('sca:confidentiality')]");
+ Object result = exp.evaluate(xml, XPathConstants.NODESET);
+ Assert.assertTrue(result instanceof NodeList);
+ NodeList nodes = (NodeList)result;
+ // Assert.assertEquals(1, nodes.getLength());
+ }
+
+ /**
+ * @throws java.lang.Exception
+ */
+ @AfterClass
+ public static void tearDownAfterClass() throws Exception {
+ }
+
+ private static class NamespaceContextImpl implements NamespaceContext {
+
+ private static final String SCA11_NS = "http://docs.oasis-open.org/ns/opencsa/sca/200712";
+
+ public String getNamespaceURI(String prefix) {
+ if ("sca".equals(prefix)) {
+ return SCA11_NS;
+ } else {
+ return null;
+ }
+ }
+
+ public String getPrefix(String namespaceURI) {
+ if (SCA11_NS.equals(namespaceURI)) {
+ return "sca";
+ }
+ return null;
+ }
+
+ public Iterator getPrefixes(String namespaceURI) {
+ if (SCA11_NS.equals(namespaceURI)) {
+ return Collections.singleton("sca").iterator();
+ }
+ return null;
+ }
+
+ }
+
+}
diff --git a/java/sca/modules/policy-xml/src/test/resources/org/apache/tuscany/sca/policy/xml/Calculator.composite b/java/sca/modules/policy-xml/src/test/resources/org/apache/tuscany/sca/policy/xml/Calculator.composite
new file mode 100644
index 0000000000..733a7333ba
--- /dev/null
+++ b/java/sca/modules/policy-xml/src/test/resources/org/apache/tuscany/sca/policy/xml/Calculator.composite
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * 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.
+-->
+<composite xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200712"
+ targetNamespace="http://sample"
+ xmlns:sample="http://sample"
+ name="Calculator">
+
+ <component name="CalculatorServiceComponent" requires="sca:confidentiality">
+ <implementation.java class="calculator.CalculatorServiceImpl"/>
+ <reference name="addService" target="AddServiceComponent" />
+ <reference name="subtractService" target="SubtractServiceComponent" />
+ <reference name="multiplyService" target="MultiplyServiceComponent" />
+ <reference name="divideService" target="DivideServiceComponent" />
+ </component>
+
+ <component name="AddServiceComponent">
+ <implementation.java class="calculator.AddServiceImpl"/>
+ </component>
+
+ <component name="SubtractServiceComponent">
+ <implementation.java class="calculator.SubtractServiceImpl"/>
+ </component>
+
+ <component name="MultiplyServiceComponent">
+ <implementation.java class="calculator.MultiplyServiceImpl"/>
+ </component>
+
+ <component name="DivideServiceComponent">
+ <implementation.java class="calculator.DivideServiceImpl"/>
+ </component>
+
+</composite>