Branch for 1.3.2

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@690149 13f79535-47bb-0310-9956-ffa450edef68

11 files changed, 1084 insertions, 0 deletions

diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/HotUpdateContextListener.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/HotUpdateContextListener.java
new file mode 100644
index 0000000000..d7ff73e31f
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/HotUpdateContextListener.java
@@ -0,0 +1,57 @@
+/*
+ * 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.host.webapp;
+
+import java.io.File;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletContextEvent;
+
+import org.apache.tuscany.sca.host.embedded.impl.HotUpdatableSCADomain;
+
+/**
+ * A WebApp ContextListener that starts a Tuscany runtime supporting multiple
+ * SCA contribution jars. All contribution jars found in the repository
+ * directory named "sca-contributions" will be contributed to the SCA 
+ * domain. Any changes to the contributions in the repository will be 
+ * automatically detected and the SCADomain updated accordingly.
+ *
+ * @version $Rev$ $Date$
+ */
+public class HotUpdateContextListener extends TuscanyContextListener {
+
+    public static final String REPOSITORY_FOLDER_NAME = "sca-contributions";
+    
+    @Override
+    public void contextInitialized(ServletContextEvent event) {
+        ServletContext servletContext = event.getServletContext();
+        
+        // TODO better domaiURI, maybe based on webapp name?
+        String domainURI = "http://localhost/" + servletContext.getServletContextName().replace(' ', '.');
+
+        File repository = new File(servletContext.getRealPath(REPOSITORY_FOLDER_NAME));
+        HotUpdatableSCADomain scaDomain = new HotUpdatableSCADomain(domainURI, repository, 2000);        
+
+        servletContext.setAttribute(SCADomainHelper.SCA_DOMAIN_ATTRIBUTE, scaDomain);
+
+        super.contextInitialized(event);
+    }
+    
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/SCADomainHelper.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/SCADomainHelper.java
new file mode 100644
index 0000000000..2dbd7e9aa1
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/SCADomainHelper.java
@@ -0,0 +1,72 @@
+/*
+ * 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.host.webapp;
+
+import java.io.File;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import javax.servlet.ServletContext;
+
+import org.apache.tuscany.sca.host.embedded.SCADomain;
+
+/**
+ * Utility class to initialize the SCADomian associated with a webapp
+ *
+ * @version $Rev$ $Date$
+ * @deprecated Not necessary anymore with TuscanyServletFilter 
+ */
+@Deprecated
+public class SCADomainHelper {
+
+    static final String SCA_DOMAIN_ATTRIBUTE = "org.apache.tuscany.sca.SCADomain";
+
+    /**
+     * Initializes the SCADomian associated with a webapp context. If a SCADomain
+     * doesn't exist already then one is create based on the webapp config.
+     */
+    static SCADomain initSCADomain(ServletContext servletContext) {
+        SCADomain scaDomain = (SCADomain)servletContext.getAttribute(SCA_DOMAIN_ATTRIBUTE);
+        
+        String domainURI = "http://localhost/" + servletContext.getServletContextName().replace(' ', '.');
+        String contributionRoot = null;
+        
+        try {
+            URL rootURL = servletContext.getResource("/");
+            if (rootURL.getProtocol().equals("jndi")) {
+                //this is Tomcat case, we should use getRealPath
+                File warRootFile = new File(servletContext.getRealPath("/"));
+                contributionRoot = warRootFile.toURL().toString();
+            } else {
+                //this is Jetty case
+                contributionRoot  = rootURL.toString();
+            }
+        } catch(MalformedURLException mf) {
+            //ignore, pass null
+        }
+                
+        
+        if (scaDomain == null) {
+            scaDomain = SCADomain.newInstance(domainURI, contributionRoot);
+            servletContext.setAttribute(SCA_DOMAIN_ATTRIBUTE, scaDomain);
+        }
+        return scaDomain;
+    }
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyContextListener.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyContextListener.java
new file mode 100644
index 0000000000..593073b068
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyContextListener.java
@@ -0,0 +1,73 @@
+/*
+ * 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.host.webapp;
+
+import java.util.Enumeration;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletContextEvent;
+import javax.servlet.ServletContextListener;
+import javax.servlet.ServletException;
+
+import org.apache.tuscany.sca.host.embedded.SCADomain;
+
+/**
+ * A ServletContextListener to create and close the SCADomain
+ * when the webapp is initialized or destroyed.
+ *
+ * @version $Rev$ $Date$
+ */
+public class TuscanyContextListener implements ServletContextListener {
+
+    public void contextInitialized(ServletContextEvent event) {
+        final ServletContext servletContext = event.getServletContext();
+        try {
+            WebAppServletHost.getInstance().init(new ServletConfig() {
+                public String getInitParameter(String name) {
+                    return servletContext.getInitParameter(name);
+                }
+
+                public Enumeration getInitParameterNames() {
+                    return servletContext.getInitParameterNames();
+                }
+
+                public ServletContext getServletContext() {
+                    return servletContext;
+                }
+
+                public String getServletName() {
+                    return null;
+                }
+            });
+        } catch (ServletException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public void contextDestroyed(ServletContextEvent event) {
+        ServletContext servletContext = event.getServletContext();
+        SCADomain scaDomain = (SCADomain) servletContext.getAttribute(WebAppServletHost.SCA_DOMAIN_ATTRIBUTE);
+        if (scaDomain != null) {
+            scaDomain.close();
+        }
+    }
+
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyServlet.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyServlet.java
new file mode 100644
index 0000000000..559fef73cc
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyServlet.java
@@ -0,0 +1,67 @@
+/*
+ * 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.host.webapp;
+
+import java.io.IOException;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+
+/**
+ * A Servlet that forwards requests to the Servlets registered with the Tuscany
+ * ServletHost.
+ *
+ * @version $Rev$ $Date$
+ * @deprecated Not needed anymore, TuscanyServletFilter is sufficient
+ */
+@Deprecated
+public class TuscanyServlet extends HttpServlet {
+    private static final long serialVersionUID = 1L;
+
+    private transient WebAppServletHost servletHost;
+
+    @Override
+    public void init(ServletConfig config) throws ServletException {
+        ServletContext servletContext = config.getServletContext();
+        SCADomainHelper.initSCADomain(servletContext);
+
+        // TODO: must be a better way to get this than using a static
+        servletHost = WebAppServletHost.getInstance();
+        servletHost.init(config);
+    }
+
+    @Override
+    public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
+        String path = ((HttpServletRequest)req).getPathInfo();
+        RequestDispatcher dispatcher = servletHost.getRequestDispatcher(path);
+        if (dispatcher == null) {
+            throw new IllegalStateException("No servlet registered for path: " + path);
+        }
+
+        dispatcher.forward(req, res);
+    }
+
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyServletFilter.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyServletFilter.java
new file mode 100644
index 0000000000..a5a3745d7f
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/TuscanyServletFilter.java
@@ -0,0 +1,103 @@
+/*
+ * 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.host.webapp;
+
+import java.io.IOException;
+import java.util.Enumeration;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterConfig;
+import javax.servlet.RequestDispatcher;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+
+/**
+ * A Servlet filter that forwards service requests to the Servlets registered with
+ * the Tuscany ServletHost.
+ *
+ * @version $Rev$ $Date$
+ */
+public class TuscanyServletFilter implements Filter {
+    private static final long serialVersionUID = 1L;
+    //private static final Logger logger = Logger.getLogger(WebAppServletHost.class.getName());
+
+    private WebAppServletHost servletHost;
+
+    public void init(final FilterConfig config) throws ServletException {
+        // TODO: must be a better way to get this than using a static
+        servletHost = WebAppServletHost.getInstance();
+
+        // Initialize the Servlet host
+        servletHost.init(new ServletConfig() {
+            public String getInitParameter(String name) {
+                return config.getInitParameter(name);
+            }
+
+            public Enumeration getInitParameterNames() {
+                return config.getInitParameterNames();
+            }
+
+            public ServletContext getServletContext() {
+                return config.getServletContext();
+            }
+
+            public String getServletName() {
+                return config.getFilterName();
+            }
+        });
+    }
+
+    public void destroy() {
+        WebAppServletHost.getInstance().destroy();
+    }
+
+    public void doFilter(ServletRequest request, ServletResponse response, javax.servlet.FilterChain chain)
+        throws IOException, ServletException {
+
+        // Get the Servlet path
+        HttpServletRequest httpRequest = (HttpServletRequest)request;
+        String path = httpRequest.getPathInfo();
+        if (path == null) {
+            path = httpRequest.getServletPath();
+        }
+        if (path == null) {
+            path = "/";
+        }
+
+        // Get a request dispatcher for the Servlet mapped to that path
+        RequestDispatcher dispatcher = servletHost.getRequestDispatcher(path);
+        if (dispatcher != null) {
+
+            // Let the dispatcher forward the request to the Servlet 
+            dispatcher.forward(request, response);
+
+        } else {
+
+            // Proceed down the filter chain
+            chain.doFilter(request, response);
+
+        }
+    }
+
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppModuleActivator.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppModuleActivator.java
new file mode 100644
index 0000000000..dbe8a523f9
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppModuleActivator.java
@@ -0,0 +1,66 @@
+/*
+ * 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.host.webapp;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.ModuleActivator;
+import org.apache.tuscany.sca.host.http.ServletHost;
+import org.apache.tuscany.sca.host.http.ServletHostExtensionPoint;
+
+/**
+ * Activates the webapp host by registering the webapp ServletHost impl
+ *
+ * @version $Rev$ $Date$
+ */
+public class WebAppModuleActivator implements ModuleActivator {
+
+    public void start(ExtensionPointRegistry extensionPointRegistry) {
+
+        ServletHostExtensionPoint servletHosts =
+            extensionPointRegistry.getExtensionPoint(ServletHostExtensionPoint.class);
+        
+        List<ServletHost> hosts = servletHosts.getServletHosts();
+        if (isRunningInWebapp()) {
+            if (hosts.size() > 0) {
+                hosts.removeAll(hosts);
+            }
+            servletHosts.addServletHost(WebAppServletHost.getInstance());
+        }
+    }
+
+    public void stop(ExtensionPointRegistry registry) {
+    }
+
+    /**
+     * TODO: this seems a bit of a hacky way to find if its running in a webapp
+     *       is there a better way?
+     */
+    private boolean isRunningInWebapp() {
+        for (StackTraceElement ste : new Exception().getStackTrace()) {
+            if (ste.getClassName().equals(WebSCADomain.class.getName())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppRequestDispatcher.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppRequestDispatcher.java
new file mode 100644
index 0000000000..5fcaa35d8f
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppRequestDispatcher.java
@@ -0,0 +1,111 @@
+/*
+ * 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.host.webapp;
+
+import java.io.IOException;
+import java.util.StringTokenizer;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.Servlet;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequestWrapper;
+
+/**
+ * A Servlet request dispatcher that can be used to delegate requests to a
+ * Servlet registered with the Webapp Servlet host.
+ *
+ * @version $Rev$ $Date$
+ */
+class WebAppRequestDispatcher implements RequestDispatcher {
+    private String servletPath;
+    private Servlet servlet;
+    
+    public WebAppRequestDispatcher(String mapping, Servlet servlet) {
+        if (mapping.endsWith("*")) {
+            mapping = mapping.substring(0, mapping.length()-1);
+        }
+        if (mapping.endsWith("/")) {
+            mapping = mapping.substring(0, mapping.length()-1);
+        }
+        this.servletPath = mapping;
+        this.servlet = servlet;
+    }
+
+    /**
+     * Returns a request wrapper which will return the correct Servlet path
+     * and path info.
+     * 
+     * @param request
+     * @return
+     */
+    private HttpServletRequest createRequestWrapper(ServletRequest request) {
+        HttpServletRequest requestWrapper = new HttpServletRequestWrapper((HttpServletRequest)request) {
+            
+            @Override
+            public String getServletPath() {
+                return servletPath;
+            }
+            
+            @Override
+            public String getPathInfo() {
+                String path = super.getServletPath();
+                if (path.length() == 0) {
+                    path = super.getPathInfo();
+                }
+
+                // TODO: another context path hack, revisit when context path is sorted out
+                path = fiddlePath(path, servletPath);
+
+                return path;
+            }
+        };
+        return requestWrapper;
+    }
+
+    /**
+     * Remove any path suffix thats part of the Servlet context path
+     */
+    protected String fiddlePath(String path, String servletPath) {
+        StringTokenizer st = new StringTokenizer(path, "/");
+        String root = "";
+        while (st.hasMoreTokens()){
+                String s = st.nextToken();
+                if (servletPath.endsWith((root + "/" + s))) {
+                        root += "/" + s;
+                } else {
+                        break;
+                }
+        }
+        String fiddlePath = path.substring(root.length());
+        return fiddlePath;
+    }
+
+    public void forward(ServletRequest request, ServletResponse response) throws ServletException, IOException {
+        servlet.service(createRequestWrapper(request), response);
+    }
+    
+    public void include(ServletRequest request, ServletResponse response) throws ServletException, IOException {
+        servlet.service(createRequestWrapper(request), response);
+    }
+}
+
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java
new file mode 100644
index 0000000000..97dc6bc622
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppServletHost.java
@@ -0,0 +1,331 @@
+/*
+ * 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.host.webapp;
+
+import java.io.File;
+import java.lang.reflect.Method;
+import java.net.InetAddress;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URL;
+import java.net.UnknownHostException;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.logging.Logger;
+
+import javax.naming.InitialContext;
+import javax.naming.NamingException;
+import javax.servlet.RequestDispatcher;
+import javax.servlet.Servlet;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+
+import org.apache.tuscany.sca.host.embedded.SCADomain;
+import org.apache.tuscany.sca.host.http.ServletHost;
+import org.apache.tuscany.sca.host.http.ServletMappingException;
+
+/**
+ * ServletHost implementation for use in a webapp environment.
+ * 
+ * FIXME: using a static singleton seems a big hack but how should it be shared?
+ * Need some way for TuscanyServlet to pull it out.
+ *
+ * @version $Rev$ $Date$
+ */
+public class WebAppServletHost implements ServletHost {
+    private static final Logger logger = Logger.getLogger(WebAppServletHost.class.getName());
+
+    public static final String SCA_DOMAIN_ATTRIBUTE = "org.apache.tuscany.sca.SCADomain";
+
+    private static final WebAppServletHost instance = new WebAppServletHost();
+
+    private Map<String, Servlet> servlets;
+    private SCADomain scaDomain;
+    private String contextPath = "/";
+    private int defaultPortNumber = 8080;
+    private String contributionRoot;
+
+    private WebAppServletHost() {
+        servlets = new HashMap<String, Servlet>();
+    }
+
+    public void setDefaultPort(int port) {
+        defaultPortNumber = port;
+    }
+
+    public int getDefaultPort() {
+        return defaultPortNumber;
+    }
+
+    public void addServletMapping(String suri, Servlet servlet) throws ServletMappingException {
+        URI pathURI = URI.create(suri);
+
+        // Make sure that the path starts with a /
+        suri = pathURI.getPath();
+        if (!suri.startsWith("/")) {
+            suri = '/' + suri;
+        }
+
+        if (!suri.startsWith(contextPath)) {
+            suri = contextPath + suri;
+        }
+
+        // In a webapp just use the given path and ignore the host and port
+        // as they are fixed by the Web container
+        servlets.put(suri, servlet);
+
+        logger.info("Added Servlet mapping: " + suri);
+    }
+
+    public Servlet removeServletMapping(String suri) throws ServletMappingException {
+        URI pathURI = URI.create(suri);
+
+        // Make sure that the path starts with a /
+        suri = pathURI.getPath();
+        if (!suri.startsWith("/")) {
+            suri = '/' + suri;
+        }
+
+        if (!suri.startsWith(contextPath)) {
+            suri = contextPath + suri;
+        }
+
+        // In a webapp just use the given path and ignore the host and port
+        // as they are fixed by the Web container
+        return servlets.remove(suri);
+    }
+
+    public Servlet getServletMapping(String suri) throws ServletMappingException {
+        if (!suri.startsWith("/")) {
+            suri = '/' + suri;
+        }
+
+        if (!suri.startsWith(contextPath)) {
+            suri = contextPath + suri;
+        }
+
+        // Get the Servlet mapped to the given path
+        Servlet servlet = servlets.get(suri);
+        return servlet;
+    }
+
+    public URL getURLMapping(String suri) throws ServletMappingException {
+        URI uri = URI.create(suri);
+
+        // Get the URI scheme and port
+        String scheme = uri.getScheme();
+        if (scheme == null) {
+            scheme = "http";
+        }
+        int portNumber = uri.getPort();
+        if (portNumber == -1) {
+            portNumber = defaultPortNumber;
+        }
+
+        // Get the host
+        String host;
+        try {
+            host = InetAddress.getLocalHost().getHostName();
+        } catch (UnknownHostException e) {
+            host = "localhost";
+        }
+
+        // Construct the URL
+        String path = uri.getPath();
+        if (!path.startsWith("/")) {
+            path = '/' + path;
+        }
+
+        if (contextPath != null && !path.startsWith(contextPath)) {
+            path = contextPath + path;
+        }
+
+        URL url;
+        try {
+            url = new URL(scheme, host, portNumber, path);
+        } catch (MalformedURLException e) {
+            throw new ServletMappingException(e);
+        }
+        return url;
+    }
+
+    public RequestDispatcher getRequestDispatcher(String suri) throws ServletMappingException {
+
+        // Make sure that the path starts with a /
+        if (!suri.startsWith("/")) {
+            suri = '/' + suri;
+        }
+
+        suri = contextPath + suri;
+
+        // Get the Servlet mapped to the given path
+        Servlet servlet = servlets.get(suri);
+        if (servlet != null) {
+            return new WebAppRequestDispatcher(suri, servlet);
+        }
+
+        for (Map.Entry<String, Servlet> entry : servlets.entrySet()) {
+            String servletPath = entry.getKey();
+            if (servletPath.endsWith("*")) {
+                servletPath = servletPath.substring(0, servletPath.length() - 1);
+                if (suri.startsWith(servletPath)) {
+                    // entry key is contextPath/servletPath, WebAppRequestDispatcher only wants servletPath
+                    return new WebAppRequestDispatcher(entry.getKey().substring(contextPath.length()), entry.getValue());
+                } else {
+                    if ((suri + "/").startsWith(servletPath)) {
+                        return new WebAppRequestDispatcher(entry.getKey().substring(contextPath.length()), entry.getValue());
+                    }
+                }
+            }
+        }
+
+        // No Servlet found
+        return null;
+    }
+
+    public static WebAppServletHost getInstance() {
+        return instance;
+    }
+
+    public void init(ServletConfig config) throws ServletException {
+
+        ServletContext servletContext = config.getServletContext();
+        if (servletContext.getAttribute(SCA_DOMAIN_ATTRIBUTE) == null) {
+            initContextPath(config);
+            String domainURI = "http://localhost/" + contextPath;
+            contributionRoot = getContributionRoot(servletContext);
+            // logger.info("Contribution: " + contributionRoot);
+            System.setProperty(SCADomain.class.getName(), WebSCADomain.class.getName());
+            this.scaDomain = SCADomain.newInstance(domainURI, contributionRoot);
+            servletContext.setAttribute(SCA_DOMAIN_ATTRIBUTE, scaDomain);
+        }
+
+        // Initialize the registered Servlets
+        for (Servlet servlet : servlets.values()) {
+            servlet.init(config);
+        }
+    }
+
+    protected String getContributionRoot(ServletContext servletContext) {
+        String contributionRoot = null;
+        try {
+
+            InitialContext ic = new InitialContext();
+            URL repoURL = (URL)ic.lookup("java:comp/env/url/contributions");
+
+            contributionRoot = repoURL.toString();
+
+        } catch (NamingException e) {
+
+            // ignore exception and use default location
+
+            try {
+                
+                String root = servletContext.getInitParameter("contributionRoot");
+                if (root == null || root.length() < 1) {
+                    root = "/";
+                }
+                URL rootURL = servletContext.getResource(root);
+                if (rootURL.getProtocol().equals("jndi")) {
+                    //this is Tomcat case, we should use getRealPath
+                    File warRootFile = new File(servletContext.getRealPath(root));
+                    contributionRoot = warRootFile.toURL().toString();
+                } else {
+                    //this is Jetty case
+                    contributionRoot = rootURL.toString();
+                }
+
+            } catch (MalformedURLException mf) {
+                //ignore, pass null
+            }
+        }
+
+        return contributionRoot;
+    }
+
+    /**
+     * Initializes the contextPath
+     * The 2.5 Servlet API has a getter for this, for pre 2.5 Servlet
+     * containers use an init parameter.
+     */
+    @SuppressWarnings("unchecked")
+    public void initContextPath(ServletConfig config) {
+        
+        if (Collections.list(config.getInitParameterNames()).contains("contextPath")) {
+            contextPath = config.getInitParameter("contextPath");
+        } else {
+            // The getContextPath() is introduced since Servlet 2.5
+            ServletContext context = config.getServletContext();
+            try {
+                // Try to get the method anyway since some ServletContext impl has this method even before 2.5
+                Method m = context.getClass().getMethod("getContextPath", new Class[] {});
+                contextPath = (String)m.invoke(context, new Object[] {});
+            } catch (Exception e) {
+                logger.warning("Servlet level is: " + context.getMajorVersion() + "." + context.getMinorVersion());
+                throw new IllegalStateException("'contextPath' init parameter must be set for pre-2.5 servlet container");
+            }
+        }
+
+        logger.info("ContextPath: " + contextPath);
+    }
+
+    void destroy() {
+
+        // Destroy the registered Servlets
+        for (Servlet servlet : servlets.values()) {
+            servlet.destroy();
+        }
+
+        // Close the SCA domain
+        if (scaDomain != null) {
+            scaDomain.close();
+            if (scaDomain instanceof WebSCADomain) {
+                ((WebSCADomain)scaDomain).destroy();
+            }
+        }
+    }
+
+    public String getContextPath() {
+        return contextPath;
+    }
+
+    public void setContextPath(String path) {
+        //        if (!contextPath.equals(path)) {
+        //            throw new IllegalArgumentException("invalid context path for webapp, existing context path: " + contextPath + " new contextPath: " + path);
+        //        }
+    }
+
+    /**
+     * TODO: How context paths work is still up in the air so for now
+     *    this hacks in a path that gets some samples working
+     *    can't use setContextPath as NodeImpl calls that later
+     */
+    public void setContextPath2(String path) {
+        if (path != null && path.length() > 0) {
+            this.contextPath = path;
+        }
+    }
+
+    public String getContributionRoot() {
+        return contributionRoot;
+    }
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebSCADomain.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebSCADomain.java
new file mode 100644
index 0000000000..be35733220
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebSCADomain.java
@@ -0,0 +1,53 @@
+/*
+ * 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.host.webapp;
+
+import org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class WebSCADomain extends DefaultSCADomain {
+
+    /**
+     * @param runtimeClassLoader
+     * @param applicationClassLoader
+     * @param domainURI
+     * @param contributionLocation
+     * @param composites
+     */
+    public WebSCADomain(ClassLoader runtimeClassLoader,
+                        ClassLoader applicationClassLoader,
+                        String domainURI,
+                        String contributionLocation,
+                        String... composites) {
+        super(runtimeClassLoader, applicationClassLoader, domainURI, contributionLocation, composites);
+    }
+
+    @Override
+    public void close() {
+        // Disable the close() as a hack to keep the WebSCADomain open
+    }
+
+    public void destroy() {
+        super.close();
+    }
+
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/jsp/ReferenceTEI.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/jsp/ReferenceTEI.java
new file mode 100644
index 0000000000..0f77f2f2b4
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/jsp/ReferenceTEI.java
@@ -0,0 +1,44 @@
+/*
+ * 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.host.webapp.jsp;
+
+import javax.servlet.jsp.tagext.TagData;
+import javax.servlet.jsp.tagext.TagExtraInfo;
+import javax.servlet.jsp.tagext.VariableInfo;
+
+/**
+ * TagExtraInfo class for the SCA reference tags
+ * <sca:reference name="service" type="test.MyService" scope="1" />
+ *
+ * @version $Rev$ $Date$
+ */
+public class ReferenceTEI extends TagExtraInfo {
+
+    public VariableInfo[] getVariableInfo(TagData data) {
+        VariableInfo info1
+           = new VariableInfo(
+              data.getAttributeString("name"),
+              data.getAttributeString("type"),
+              true,
+              VariableInfo.AT_END);
+        VariableInfo[] info = { info1 } ;
+        return info;
+     }
+}
diff --git a/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/jsp/ReferenceTag.java b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/jsp/ReferenceTag.java
new file mode 100644
index 0000000000..20545e88c3
--- /dev/null
+++ b/branches/sca-java-1.3.2/modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/jsp/ReferenceTag.java
@@ -0,0 +1,107 @@
+/*
+ * 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.host.webapp.jsp;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.jsp.JspException;
+import javax.servlet.jsp.PageContext;
+import javax.servlet.jsp.tagext.TagSupport;
+
+import org.apache.tuscany.sca.host.embedded.SCADomain;
+import org.apache.tuscany.sca.host.webapp.WebAppServletHost;
+
+/**
+ * Tag to handle SCA references
+ * <sca:reference name="service" type="test.MyService" scope="1" />
+ *
+ * @version $Rev$ $Date$
+ */
+public class ReferenceTag extends TagSupport {
+    private static final long serialVersionUID = 1L;
+
+    protected String name;
+    protected String type;
+    protected Integer scope = PageContext.PAGE_SCOPE;
+
+    public int doStartTag() throws JspException {
+        return SKIP_BODY;
+    }
+
+    public int doEndTag() throws JspException {
+
+        try {
+            WebAppServletHost.getInstance().init(pageContext.getServletConfig());
+        } catch (ServletException e) {
+            throw new JspException("Exception initializing Tuscany webapp: " + e, e);
+        }
+ 
+        ServletContext servletContext = pageContext.getServletContext();
+        SCADomain scaDomain = (SCADomain)servletContext.getAttribute(WebAppServletHost.SCA_DOMAIN_ATTRIBUTE);
+        if (scaDomain == null) {
+            throw new JspException("SCADomain is null. Check Tuscany configuration in web.xml");
+        }
+
+        Class<?> typeClass;
+        try {
+            typeClass = Class.forName(type, true, Thread.currentThread().getContextClassLoader());
+        } catch (ClassNotFoundException e) {
+            throw new JspException("Reference '" + name + "' type class not found: " + type);
+        }
+
+        Object o;
+        try {
+            o = scaDomain.getService(typeClass, name);
+        } catch (Exception e) {
+            throw new JspException("Exception getting service for reference'" + name + "': " + e, e);
+        }
+        if (o == null) {
+            throw new JspException("Reference '" + name + "' not found");
+        }
+
+        pageContext.setAttribute(name, o, scope);
+
+        return EVAL_PAGE;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Integer getScope() {
+        return scope;
+    }
+
+    public void setScope(Integer scope) {
+        this.scope = scope;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+}