Author: jvermillard
Date: Wed Jan 30 14:44:08 2008
New Revision: 616931
URL: http://svn.apache.org/viewvc?rev=616931&view=rev
Log:
regular expression based resolver
Added:
mina/asyncweb/trunk/server/src/main/java/org/apache/asyncweb/server/resolver/PatternMatchResolver.java
Added:
mina/asyncweb/trunk/server/src/main/java/org/apache/asyncweb/server/resolver/PatternMatchResolver.java
URL:
http://svn.apache.org/viewvc/mina/asyncweb/trunk/server/src/main/java/org/apache/asyncweb/server/resolver/PatternMatchResolver.java?rev=616931&view=auto
==============================================================================
---
mina/asyncweb/trunk/server/src/main/java/org/apache/asyncweb/server/resolver/PatternMatchResolver.java
(added)
+++
mina/asyncweb/trunk/server/src/main/java/org/apache/asyncweb/server/resolver/PatternMatchResolver.java
Wed Jan 30 14:44:08 2008
@@ -0,0 +1,115 @@
+/*
+ * 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.asyncweb.server.resolver;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.regex.Pattern;
+
+import org.apache.asyncweb.common.HttpRequest;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * A <code>ServiceResolver</code> which maps request URIs to service names. An
+ * pattern match is required on a request URI to a service name for returning
+ * the matching service. Pattern are in the [EMAIL PROTECTED] Pattern}
format.<br/>
+ * For example : "/hello/.*" will match all the URI begining by the string
+ * "/hello/".
+ *
+ * @author The Apache MINA Project ([EMAIL PROTECTED])
+ * @version $Rev: 601236 $, $Date: 2007-12-05 08:53:03 +0100 (mer, 05 déc
2007) $
+ */
+public class PatternMatchResolver implements ServiceResolver {
+ private static final Logger LOG = LoggerFactory
+ .getLogger(PatternMatchResolver.class);
+
+ private Map<Pattern, String> serviceMap = new HashMap<Pattern,
String>();
+
+ /**
+ * Adds a mapping from a request URI to a service name. Any existing
mapping
+ * for the same pattern is overwritten.
+ *
+ * @param regexp
+ * The regular expression string [EMAIL PROTECTED] Pattern}
+ * @param serviceName
+ * The matching service name
+ */
+ public void addPatternMapping(String regexp, String serviceName) {
+ String existingMapping =
serviceMap.put(Pattern.compile(regexp), serviceName);
+ if (existingMapping != null) {
+ LOG.info("Existing match [ "+existingMapping+" ]
replaced by "
+ + "[" + serviceName + "] for pattern ["
+ regexp + "]");
+ } else {
+ LOG.info("Mapped [" + regexp + "] to service [" +
serviceName + "]");
+ }
+ }
+
+ /**
+ * Sets all pattern - service name mappings from a given map. Any
existing
+ * mappings are removed
+ *
+ * @param map
+ * The map to set from
+ * @throws ClassCastException
+ * If any element (key or value) in the map is not a
+ * <code>java.lang.String</code>
+ */
+ public void setMappings(Map<String, String> map) {
+ serviceMap.clear();
+ for (Entry<String, String> entry : map.entrySet()) {
+ String key = entry.getKey();
+ String value = entry.getValue();
+ addPatternMapping(key, value);
+ }
+ }
+
+ /**
+ * Attempts to resolve a service name for the specified request by
looking
+ * for an existing pattern matching with the URI as the specified
request.
+ *
+ * @param request
+ * The request for which a service name is to be resolved
+ * @return The name of the service, or <code>null</code> if no mapping
+ * pattern exists for the requests URI
+ */
+ public String resolveService(HttpRequest request) {
+ if (request.getRequestUri().isAbsolute()) {
+ return null;
+ }
+
+ String path = request.getRequestUri().getPath();
+
+ // loop around patterns
+ for(Entry<Pattern, String> entry : serviceMap.entrySet()) {
+ if(entry.getKey().matcher(path).matches()) {
+ if(LOG.isDebugEnabled())
+ LOG.debug("Mapped [" + path + "] to
service [" + entry.getValue() + "]");
+ return entry.getValue();
+ }
+ }
+
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("No mapping for path [" + path + "]");
+ }
+ return null;
+ }
+}
