svn commit: rev 10015 - xml/forrest/trunk/src/java/org/apache/forrest/conf

[ni...@apache.org]

Author: nicolaken
Date: Wed Apr 14 17:19:16 2004
New Revision: 10015

Added:
   xml/forrest/trunk/src/java/org/apache/forrest/conf/ForrestConfModule.java
Log:
Initial skeletal implementation of a single module for Forrest configuration, to eliminate the need to do content filtering with Ant in cocoon.xconf.

Added: xml/forrest/trunk/src/java/org/apache/forrest/conf/ForrestConfModule.java
==============================================================================
--- (empty file)
+++ xml/forrest/trunk/src/java/org/apache/forrest/conf/ForrestConfModule.java	Wed Apr 14 17:19:16 2004
@@ -0,0 +1,117 @@
+/*
+ * Copyright 1999-2004 The Apache Software Foundation.
+ * 
+ * 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.apache.forrest.conf;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Map;
+import java.util.Properties;
+
+import org.apache.avalon.framework.activity.Initializable;
+import org.apache.avalon.framework.configuration.Configuration;
+import org.apache.avalon.framework.configuration.ConfigurationException;
+import org.apache.avalon.framework.service.ServiceException;
+import org.apache.avalon.framework.service.ServiceManager;
+import org.apache.avalon.framework.service.Serviceable;
+import org.apache.avalon.framework.thread.ThreadSafe;
+import org.apache.cocoon.components.modules.input.AbstractJXPathModule;
+import org.apache.cocoon.components.modules.input.InputModule;
+import org.apache.excalibur.source.Source;
+import org.apache.excalibur.source.SourceResolver;
+
+/**
+ * @date 15-apr-2004
+ **/
+public class ForrestConfModule {
+  /**
+   * Input module for accessing properties in a properties file 
+   * roughly compatible with Ant property files, where ${name}
+   * is replaced with the value of the property 'name' if
+   * declared beforehand.
+   * 
+  */
+  public class AntPropertiesModule extends AbstractJXPathModule 
+  implements InputModule, Serviceable, Initializable, ThreadSafe {
+      
+      private SourceResolver m_resolver;
      private Properties forrestProperties;;
+      
+      public void service(ServiceManager manager) throws ServiceException {
+          m_resolver = (SourceResolver) manager.lookup(SourceResolver.ROLE);
+      }
+
+      public void initialize() throws Exception{
+          // get forrest properties
+      
+          Source source = null;
+          InputStream in = null;
+          try {
+              source = m_resolver.resolveURI("forrest.properties");
+              
+              if(source.exists()) {
+              
+                in = source.getInputStream();
+              
+                forrestProperties = new AntProperties();
+                forrestProperties.load(in);
+              }
+              else{
+                forrestProperties = new Properties();
+              }
+          }
+          catch (IOException e) {
+              throw new Exception("Cannot load forrest.properties file.");
+          }
+          finally {
+              if (source != null) {
+                  m_resolver.release(source);
+              }
+              if (in != null) {
+                  try {
+                      in.close();
+                  }
+                  catch (IOException e) {
+                  }
+              }
+          }
+          
+          // get location of forrest home
+          
+          String forrestHome;
+          
+          try{
+             forrestHome = System.getenv("FORREST_HOME");
+             getLogger().debug("gotten forrestHome from FORREST_HOME, value:"+forrestHome);
+          }
+          catch(Exception e){
+            //probably using a JDK with deprecated getEnv
+            forrestHome = System.getProperty("forrest.home",".");
+            getLogger().debug("gotten forrestHome from forrest.home, value:"+forrestHome);
+          }                       
+                  
+          forrestProperties.put("rawforresthome",forrestHome); 
+          forrestProperties.put("forresthome",m_resolver.resolveURI(forrestHome).getURI());                                           
+      }
+       
+      
+      protected Object getContextObject(Configuration modeConf, Map objectModel)
+          throws ConfigurationException {
+          
+          return forrestProperties;
+      }
+
+  }
+
+}