INT-300 XPathRouter

Name space support to follow

org.springframework.integration.xml/src/main/java/org/springframework/integration/xml/router/AbstractXPathChannelNameResolver.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2002-2007 the original author or authors.
+ *
+ * Licensed 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.springframework.integration.xml.router;
+
+import org.springframework.integration.message.Message;
+import org.springframework.integration.message.MessagingException;
+import org.w3c.dom.Node;
+
+public class AbstractXPathChannelNameResolver {
+
+	protected Node extractNode(Message<?> message) {
+		if (!Node.class.isAssignableFrom(message.getPayload().getClass())) {
+			throw new MessagingException(message, "Payload does not implement org.w3c.dom.Node so can not be evaluated");
+		}
+		return (Node) message.getPayload();
+	}
+}

org.springframework.integration.xml/src/main/java/org/springframework/integration/xml/router/XPathMultiChannelNameResolver.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2002-2007 the original author or authors.
+ *
+ * Licensed 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.springframework.integration.xml.router;
+
+import java.util.List;
+
+import org.springframework.integration.message.Message;
+import org.springframework.integration.router.MultiChannelNameResolver;
+import org.springframework.util.Assert;
+import org.springframework.xml.xpath.NodeMapper;
+import org.springframework.xml.xpath.XPathExpression;
+import org.w3c.dom.DOMException;
+import org.w3c.dom.Node;
+
+public class XPathMultiChannelNameResolver extends AbstractXPathChannelNameResolver implements MultiChannelNameResolver {
+
+	private final XPathExpression xPathExpression;
+	
+	private NodeMapper nodeMapper = new TextContentNodeMapper();
+	
+	public XPathMultiChannelNameResolver(XPathExpression xPathExpression){
+		Assert.notNull("XPAthExpression must be provided");
+		this.xPathExpression = xPathExpression;
+	}
+	
+	public void setNodeMapper(NodeMapper nodeMapper){
+		Assert.notNull(nodeMapper,"NodeMapper can not be null");
+		this.nodeMapper = nodeMapper;
+	}
+	
+	@SuppressWarnings("unchecked")
+	public String[] resolve(Message<?> message) {
+		Node node =extractNode(message);
+		List channelNamesList = xPathExpression.evaluate(node, nodeMapper);
+		return (String[])channelNamesList.toArray(new String[channelNamesList.size()]);
+	}
+	
+	private static class TextContentNodeMapper implements NodeMapper{
+
+		public Object mapNode(Node node, int nodeNum) throws DOMException {
+			return node.getTextContent();
+		}
+		
+	}
+	
+
+}

org.springframework.integration.xml/src/main/java/org/springframework/integration/xml/router/XPathSingleChannelNameResolver.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2002-2007 the original author or authors.
+ *
+ * Licensed 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.springframework.integration.xml.router;
+
+import org.springframework.integration.message.Message;
+import org.springframework.integration.message.MessagingException;
+import org.springframework.integration.router.ChannelNameResolver;
+import org.springframework.util.Assert;
+import org.springframework.xml.xpath.XPathExpression;
+import org.w3c.dom.Node;
+
+public class XPathSingleChannelNameResolver extends AbstractXPathChannelNameResolver implements ChannelNameResolver {
+
+	private final XPathExpression xPathExpression;
+	
+	
+	public XPathSingleChannelNameResolver(XPathExpression xPathExpression){
+		Assert.notNull("XPAthExpression must be provided");
+		this.xPathExpression = xPathExpression;
+	}
+
+
+	public String resolve(Message<?> message) {
+		Node node = extractNode(message);
+		return xPathExpression.evaluateAsString(node);
+	}
+	
+	
+}

org.springframework.integration.xml/src/test/java/org/springframework/integration/router/XPathMultiChannelNameResolverTests.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2002-2007 the original author or authors.
+ *
+ * Licensed 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.springframework.integration.router;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.springframework.integration.message.GenericMessage;
+import org.springframework.integration.message.MessagingException;
+import org.springframework.integration.message.StringMessage;
+import org.springframework.integration.xml.router.XPathMultiChannelNameResolver;
+import org.springframework.integration.xml.util.XmlTestUtil;
+import org.springframework.xml.xpath.XPathExpression;
+import org.springframework.xml.xpath.XPathExpressionFactory;
+import org.w3c.dom.Document;
+
+public class XPathMultiChannelNameResolverTests {
+
+	@Test
+	public void testSimpleSingleeAttribute() throws Exception {
+		Document doc = XmlTestUtil.getDocumentForString("<doc type=\"one\" />");
+		XPathExpression expression = XPathExpressionFactory.createXPathExpression("/doc/@type");
+		XPathMultiChannelNameResolver resolver = new XPathMultiChannelNameResolver(expression);
+		String[] channelNames = resolver.resolve(new GenericMessage(doc));
+		assertEquals("Wrong number of channels returend",1,channelNames.length);
+		assertEquals("Wrong channel name","one",channelNames[0]);
+	}
+	
+	@Test
+	public void testMultipleNodeValues() throws Exception {
+		Document doc = XmlTestUtil.getDocumentForString("<doc type=\"one\"><book>bOne</book><book>bTwo</book></doc>");
+		XPathExpression expression = XPathExpressionFactory.createXPathExpression("/doc/book");
+		XPathMultiChannelNameResolver resolver = new XPathMultiChannelNameResolver(expression);
+		String[] channelNames = resolver.resolve(new GenericMessage(doc));
+		assertEquals("Wrong number of channels returend",2,channelNames.length);
+		assertEquals("Wrong channel name","bOne",channelNames[0]);
+		assertEquals("Wrong channel name","bTwo",channelNames[1]);
+	}
+
+	
+	@Test(expected=MessagingException.class)
+	public void testNonNodePayload() throws Exception {
+		XPathExpression expression = XPathExpressionFactory.createXPathExpression("/doc/@type");
+		XPathMultiChannelNameResolver resolver = new XPathMultiChannelNameResolver(expression);
+		resolver.resolve(new StringMessage("test"));
+	}
+
+	
+	
+	
+}

org.springframework.integration.xml/src/test/java/org/springframework/integration/router/XPathSingleChannelNameResolverTests.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2002-2007 the original author or authors.
+ *
+ * Licensed 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.springframework.integration.router;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.springframework.integration.message.GenericMessage;
+import org.springframework.integration.message.MessagingException;
+import org.springframework.integration.message.StringMessage;
+import org.springframework.integration.xml.router.XPathSingleChannelNameResolver;
+import org.springframework.integration.xml.util.XmlTestUtil;
+import org.springframework.xml.xpath.XPathExpression;
+import org.springframework.xml.xpath.XPathExpressionFactory;
+import org.w3c.dom.Document;
+
+public class XPathSingleChannelNameResolverTests {
+
+	@Test
+	public void testSimpleDocType() throws Exception {
+		Document doc = XmlTestUtil.getDocumentForString("<doc type=\"one\" />");
+		XPathExpression expression = XPathExpressionFactory.createXPathExpression("/doc/@type");
+		XPathSingleChannelNameResolver resolver = new XPathSingleChannelNameResolver(expression);
+		String channelName = resolver.resolve(new GenericMessage(doc));
+		assertEquals("Wrong channel name","one",channelName);
+	}
+
+	
+	@Test(expected=MessagingException.class)
+	public void testNonNodePayload() throws Exception {
+		XPathExpression expression = XPathExpressionFactory.createXPathExpression("/doc/@type");
+		XPathSingleChannelNameResolver resolver = new XPathSingleChannelNameResolver(expression);
+		resolver.resolve(new StringMessage("test"));
+	}
+
+	
+	
+	
+}