X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=org.argeo.server.jcr.mvc%2Fsrc%2Forg%2Fargeo%2Fjcr%2Fmvc%2FMultipleRepositoryHandlerMapping.java;fp=org.argeo.server.jcr.mvc%2Fsrc%2Forg%2Fargeo%2Fjcr%2Fmvc%2FMultipleRepositoryHandlerMapping.java;h=fb3f1ae65fe8c7aa455dd432a07b7eaccedaf630;hb=79bc665d4b1eeccb7416279750bc60a138c81988;hp=0000000000000000000000000000000000000000;hpb=f00611ca313420ab96d44889577b46f31c2dcb35;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.server.jcr.mvc/src/org/argeo/jcr/mvc/MultipleRepositoryHandlerMapping.java b/org.argeo.server.jcr.mvc/src/org/argeo/jcr/mvc/MultipleRepositoryHandlerMapping.java
new file mode 100644
index 000000000..fb3f1ae65
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+++ b/org.argeo.server.jcr.mvc/src/org/argeo/jcr/mvc/MultipleRepositoryHandlerMapping.java
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * 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.argeo.jcr.mvc;
+
+import java.util.Enumeration;
+import java.util.Properties;
+import java.util.StringTokenizer;
+
+import javax.jcr.Repository;
+import javax.jcr.RepositoryFactory;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.jcr.ArgeoJcrConstants;
+import org.argeo.jcr.ArgeoJcrUtils;
+import org.springframework.beans.BeansException;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.web.context.ServletContextAware;
+import org.springframework.web.servlet.HandlerExecutionChain;
+import org.springframework.web.servlet.HandlerMapping;
+
+/** Handles multiple JCR servers with a single servlet. */
+public abstract class MultipleRepositoryHandlerMapping implements
+		HandlerMapping, ApplicationContextAware, ServletContextAware {
+	private final static Log log = LogFactory
+			.getLog(MultipleRepositoryHandlerMapping.class);
+
+	private final static String MKCOL = "MKCOL";
+
+	private ConfigurableApplicationContext applicationContext;
+	private ServletContext servletContext;
+
+	// private RepositoryRegister repositoryRegister;
+	private RepositoryFactory repositoryFactory;
+
+	/** Actually creates the servlet to be registered. */
+	protected abstract HttpServlet createServlet(Repository repository,
+			String pathPrefix) throws ServletException;
+
+	public HandlerExecutionChain getHandler(HttpServletRequest request)
+			throws Exception {
+		if (log.isTraceEnabled()) {
+			log.trace("getContextPath=" + request.getContextPath());
+			log.trace("getServletPath=" + request.getServletPath());
+			log.trace("getPathInfo=" + request.getPathInfo());
+		}
+
+		String pathInfo = request.getPathInfo();
+		String repositoryAlias = extractRepositoryAlias(pathInfo);
+		if (repositoryAlias.equals(""))
+			return null;
+
+		// MKCOL on repository or root node doesn't make sense
+		// and causes issues
+		if (request.getMethod().equals(MKCOL)) {
+			StringTokenizer st = new StringTokenizer(pathInfo, "/");
+			if (!st.hasMoreTokens())
+				return null;
+			st.nextToken();// repository
+			if (!st.hasMoreTokens())
+				return null;
+			st.nextToken();// workspace
+			if (!st.hasMoreTokens())
+				return null;
+		}
+
+		request.setAttribute(ArgeoJcrConstants.JCR_REPOSITORY_ALIAS,
+				repositoryAlias);
+		String pathPrefix = request.getServletPath() + '/' + repositoryAlias;
+		String beanName = pathPrefix;
+
+		if (!applicationContext.containsBean(beanName)) {
+			Repository repository = ArgeoJcrUtils.getRepositoryByAlias(
+					repositoryFactory, repositoryAlias);
+			// Repository repository = repositoryRegister.getRepositories().get(
+			// repositoryAlias);
+			HttpServlet servlet = createServlet(repository, pathPrefix);
+			applicationContext.getBeanFactory().registerSingleton(beanName,
+					servlet);
+			// TODO: unregister it as well
+		}
+		HttpServlet remotingServlet = (HttpServlet) applicationContext
+				.getBean(beanName);
+		HandlerExecutionChain hec = new HandlerExecutionChain(remotingServlet);
+		return hec;
+	}
+
+	/** Returns the first two token of the path */
+	// protected String[] extractPrefix(String pathInfo) {
+	// String[] res = new String[2];
+	// StringTokenizer st = new StringTokenizer(pathInfo, "/");
+	// if (st.hasMoreTokens())
+	// res[0] = st.nextToken();
+	// if (st.hasMoreTokens())
+	// res[1] = st.nextToken();
+	// return res;
+	// }
+
+	/** Returns the first token of the path */
+	protected String extractRepositoryAlias(String pathInfo) {
+		StringBuffer buf = new StringBuffer();
+		for (int i = 1; i < pathInfo.length(); i++) {
+			char c = pathInfo.charAt(i);
+			if (c == '/')
+				break;
+			buf.append(c);
+		}
+		return buf.toString();
+	}
+
+	/** The repository name is the first part of the path info */
+	// protected String extractRepositoryName(List<String> pathTokens) {
+	// StringBuffer currName = new StringBuffer("");
+	// for (String token : pathTokens) {
+	// currName.append(token);
+	// if (repositoryRegister.getRepositories().containsKey(
+	// currName.toString()))
+	// return currName.toString();
+	// currName.append('/');
+	// }
+	// throw new ArgeoException("No repository can be found for request "
+	// + pathTokens);
+	// }
+
+	public void setApplicationContext(ApplicationContext applicationContext)
+			throws BeansException {
+		this.applicationContext = (ConfigurableApplicationContext) applicationContext;
+	}
+
+	public void setServletContext(ServletContext servletContext) {
+		this.servletContext = servletContext;
+	}
+
+	// public void setRepositoryRegister(RepositoryRegister repositoryRegister)
+	// {
+	// this.repositoryRegister = repositoryRegister;
+	// }
+
+	public void setRepositoryFactory(RepositoryFactory repositoryFactory) {
+		this.repositoryFactory = repositoryFactory;
+	}
+
+	protected class DelegatingServletConfig implements ServletConfig {
+		private String name;
+		private Properties initParameters;
+
+		public DelegatingServletConfig(String name, Properties initParameters) {
+			super();
+			this.name = name;
+			this.initParameters = initParameters;
+		}
+
+		public String getServletName() {
+			return name;
+		}
+
+		public ServletContext getServletContext() {
+			return servletContext;
+		}
+
+		public String getInitParameter(String paramName) {
+			return initParameters.getProperty(paramName);
+		}
+
+		@SuppressWarnings("rawtypes")
+		public Enumeration getInitParameterNames() {
+			return initParameters.keys();
+		}
+	}
+}