some more minor mods to the module manager, and implementation of the module

uninstallation page

conf/venice-db-init-mysql.sql

@@ -1444,6 +1444,7 @@ INSERT INTO menuitems (menuid, sequence, itemtype, text, linktype, link, perm_ns
   (8, 6, 'TEXT', 'Edit Password Reminder E-Mail Message', 'SERVLET', 'sysadmin/pwremind_email.js.vs', 12,
    'set.property');
 
+# Create the sysadmin modules menu. (ID #9)
 INSERT INTO menus (menuid, menu_nsid, menu_name, title, subtitle)
   VALUES (9, 13, 'system.admin.module', 'Manage Modules', NULL);
 INSERT INTO menuitems (menuid, sequence, itemtype, text, linktype, link, perm_nsid, perm_name) VALUES
@@ -1451,7 +1452,7 @@ INSERT INTO menuitems (menuid, sequence, itemtype, text, linktype, link, perm_ns
    NULL               ),
   (9, 1,     'TEXT',   'Install New Modules',     'SERVLET', 'sysadmin/module_install.js.vs',   13,
    'install.modules'  ),
-  (9, 2,     'TEXT',   'Uninstall Modules',       'SERVLET', 'sysadmin/TODO',                 13,
+  (9, 2,     'TEXT',   'Uninstall Modules',       'SERVLET', 'sysadmin/module_uninstall.js.vs', 13,
    'uninstall.modules'),
   (9, 100,   'MARKER', 'begin-module-sysadmin',   NULL,      NULL,                              NULL,
    NULL               ),

src/dynamo-framework/com/silverwrist/dynamo/iface/Module.java

@@ -26,6 +26,8 @@ public interface Module
 {
   public QualifiedNameKey getModuleID();
 
+  public String getDescription();
+
   public void install(Principal installer, DynamoLog log) throws DatabaseException, ModuleException;
 
   public void uninstall(Principal uninstaller, DynamoLog log) throws DatabaseException, ModuleException;

src/dynamo-framework/com/silverwrist/dynamo/iface/ModuleFunctions.java

@@ -25,6 +25,8 @@ public interface ModuleFunctions
 {
   public QualifiedNameKey getModuleID();
 
+  public String getDescription();
+
   public void initialize(ModuleSite site, ServiceProvider services) throws ModuleException;
 
   public void shutdown();

src/dynamo-framework/com/silverwrist/dynamo/index/IndexServiceImpl.java

@@ -298,7 +298,7 @@ class IndexServiceImpl implements IndexService
 
   private final List doQuery(Query query, int offset, int count) throws IndexException
   {
-    SubsetCollector subc = new SubsetCollector(offset,count);
+    SubsetCollector subc = new SubsetCollector(offset,count+1);
     List rc = null;
     IndexReader irdr = null;
     IndexSearcher srch = null;

src/dynamo-framework/com/silverwrist/dynamo/module/ModuleLoader.java

@@ -284,6 +284,12 @@ class ModuleLoader extends URLClassLoader implements Module
 
   } // end getModuleID
 
+  public String getDescription()
+  {
+    return m_modfuncs.getDescription();
+
+  } // end getDescription
+
   public synchronized void install(Principal installer, DynamoLog log) throws DatabaseException, ModuleException
   {
     if (m_ops.isModuleInstalled(m_filename))

src/dynamo-framework/com/silverwrist/dynamo/module/ModuleManager.java

@@ -261,16 +261,19 @@ public class ModuleManager implements NamedObject, ComponentInitialize, Componen
     QualifiedNameKey qname = new QualifiedNameKey(namespace,name);
     synchronized (this)
     { // look up module in hash table
-      ModuleLoader rc = (ModuleLoader)(m_qname_to_module.get(qname));
-      if (rc!=null)
-	return (Module)rc;
+      return (Module)(m_qname_to_module.get(qname));
 
     } // end synchronized block
 
-    return null;
-
   } // end findModule
 
+  public synchronized Module findModuleByFilename(String filename)
+  {
+    // look for the right module already in the map
+    return (Module)(m_jar_to_module.get(filename));
+
+  } // end findModuleByFilename
+
   public Module loadModule(String name, boolean initialize) throws ModuleException
   {
     ModuleLoader rc = null;

src/dynamo-framework/com/silverwrist/dynamo/module/ModuleOperations.java

@@ -29,6 +29,8 @@ public interface ModuleOperations
 {
   public Module findModule(String namespace, String name);
 
+  public Module findModuleByFilename(String filename);
+
   public Module loadModule(String name, boolean initialize) throws ModuleException;
 
   public void freeUnusedModules();

src/dynamo-test-module/com/silverwrist/dynamo/testmod/Main.java

@@ -35,6 +35,8 @@ public class Main implements ModuleFunctions
   private static final QualifiedNameKey ID =
       new QualifiedNameKey("http://www.silverwrist.com/NS/dynamo/2003/05/18/testapp","testmodule");
 
+  private static final String DESCR = "Dynamo Test Module";
+
   /*--------------------------------------------------------------------------------
    * Attributes
    *--------------------------------------------------------------------------------
@@ -62,6 +64,12 @@ public class Main implements ModuleFunctions
 
   } // end getModuleID
 
+  public String getDescription()
+  {
+    return DESCR;
+
+  } // end getDescription
+
   public void initialize(ModuleSite site, ServiceProvider services) throws ModuleException
   {
     m_site = site;

venice-data/scripts/sysadmin/module_install.js

@@ -29,6 +29,12 @@ req = bsf.lookupBean("request");
 req_help = bsf.lookupBean("request_help");
 user = vlib.getUser(req);
 
+// Make sure we are permitted to be here.
+srm = cast.querySecurityReferenceMonitor(req_help.getRequestObject(Namespaces.DYNAMO_OBJECT_NAMESPACE,"srm"));
+acl = srm.getGlobalAcl();
+if (!(acl.testPermission(user,VeniceNamespaces.SYSTEM_PERMS_NAMESPACE,"install.modules")))
+  dynamo.scriptReturn(vlib.stdErrorBox(req,"Security Error","You are not permitted to install modules."));
+
 modops = cast.queryModuleOperations(req);
 
 the_module = req_help.getParameterString("mod");

venice-data/scripts/sysadmin/module_uninstall.js

@@ -0,0 +1,109 @@
+// The contents of this file are subject to the Mozilla Public License Version 1.1
+// (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.mozilla.org/MPL/>.
+// 
+// Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+// WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+// language governing rights and limitations under the License.
+// 
+// The Original Code is the Venice Web Communities System.
+// 
+// The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+// for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+// Copyright (C) 2003 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+// 
+// Contributor(s): 
+
+importPackage(java.util);
+importClass(Packages.com.silverwrist.dynamo.Namespaces);
+importPackage(Packages.com.silverwrist.dynamo.except);
+importPackage(Packages.com.silverwrist.dynamo.iface);
+importPackage(Packages.com.silverwrist.dynamo.module);
+importPackage(Packages.com.silverwrist.dynamo.security);
+importPackage(Packages.com.silverwrist.dynamo.util);
+importClass(Packages.com.silverwrist.venice.VeniceNamespaces);
+importPackage(Packages.com.silverwrist.venice.content);
+importPackage(Packages.com.silverwrist.venice.iface);
+
+req = bsf.lookupBean("request");
+req_help = bsf.lookupBean("request_help");
+user = vlib.getUser(req);
+
+// Make sure we are permitted to be here.
+srm = cast.querySecurityReferenceMonitor(req_help.getRequestObject(Namespaces.DYNAMO_OBJECT_NAMESPACE,"srm"));
+acl = srm.getGlobalAcl();
+if (!(acl.testPermission(user,VeniceNamespaces.SYSTEM_PERMS_NAMESPACE,"uninstall.modules")))
+  dynamo.scriptReturn(vlib.stdErrorBox(req,"Security Error","You are not permitted to uninstall modules."));
+
+modops = cast.queryModuleOperations(req);
+
+the_module = rhelp.getParameterString("mod");
+if (the_module!=null)
+{ // we want to uninstall this module
+  rc = null;
+  if (vlib.confirmed(req,"/sysadmin/module_uninstall.js.vs","confirmation","confnum"))
+  { // OK, they have confirmed they want to uninstall the module...do it!
+    mod = modops.findModuleByFilename(n);
+    except = null;
+    log = new SimpleMemoryLog();
+    try
+    { // uninstall the module
+      mod.uninstall(user,log);
+      modops.freeUnusedModules();  // GC the module list, as it were
+
+    } // end try
+    catch (e)
+    { // save the exception
+      except = e;
+
+    } // end catch
+
+    // Return the results.
+    rc = new VelocityView("Module Uninstallation","sysadmin/module_uninstall_result.vm");
+    rc.setParameter("module",the_module);
+    rc.setParameter("log",log.getLog());
+    if (except!=null)
+      rc.setParameter("except",except);
+
+  } // end if
+  else
+  { // generate a confirmation number box
+    msg = "You are about to uninstall module '" + the_module + "'!  This will cause any and all data associated with "
+        + "this module (such as database tables and their contents) to be <b>DESTROYED AND IRREVOCABLY LOST!</b> "
+        + "Are you <em>really</em> sure you want to do this?";
+    ok_url = "sysadmin/module_uninstall.js.vs?mod=" + stringutils.encodeURL(the_module);
+    rc = new ConfirmBox(req,"/sysadmin/module_uninstall.js.vs","confirmation","confnum",
+                        "Module Uninstall Confirmation",msg,"SERVLET",ok_url,"SERVLET",
+                        "sysadmin/module_uninstall.js.vs");
+
+  } // end else
+
+  dynamo.scriptReturn(rc);
+
+} // end if
+
+// Get the set of all installed module files.
+instmod = modops.listInstalledModuleNames();
+
+// Turn it into a list of name/description pairs.
+namelist = new ArrayList();
+it = instmod.iterator();
+while (it.hasNext())
+{ // get each module name in turn, and get the module reference
+  n = it.next() + "";
+  mod = modops.findModuleByFilename(n);
+  if (mod!=null)
+  { // get the module's description and add it
+    tmp = new HashMap();
+    tmp.put("name",n);
+    tmp.put("descr",mod.getDescription());
+    namelist.add(tmp);
+
+  } // end if
+
+} // end while
+
+// Return the Velocity view.
+rc = new VelocityView("Uninstall Modules","sysadmin/module_uninstall.vm");
+rc.setParameter("modlist",namelist);
+dynamo.scriptOutput(rc);

venice-data/velocity/sysadmin/module_uninstall.vm

@@ -0,0 +1,41 @@
+#*
+  The contents of this file are subject to the Mozilla Public License Version 1.1
+  (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.mozilla.org/MPL/>.
+  
+  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+  WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+  language governing rights and limitations under the License.
+  
+  The Original Code is the Venice Web Communities System.
+  
+  The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+  for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+  Copyright (C) 2003 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+  
+  Contributor(s): 
+*#
+#*
+  Parameters:
+    modlist = List of module file names which are not yet installed.
+*#
+#header1( "Uninstall Modules" )
+<p><a href="#formatURL( "SERVLET" "sysadmin/modules.js.vs" )">Return to Previous Menu</a></p>
+#if( $modlist.isEmpty() )
+  <p><em>No modules are curently installed in the system.</em></p>
+#else
+  <p>The following modules are presently installed on the system.  Click a module's name to uninstall it.</p>
+  <div align="center"><table border="1" cellpadding="2" cellspacing="0">
+    <tr>
+      <th><b>Name</b></th>
+      <th><b>Description</b></th>
+    </tr>
+    #foreach( $x in $modlist )
+      #set( $en = "#encodeURL( $x.name )" )
+      <tr>
+        <td><a href="#formatURL( "SERVLET" "sysadmin/module_uninstall.js.vs?mod=$en" )">#encodeHTML( $x.name )</a></td>
+        <td>#encodeHTML( $x.descr )</td>
+      </tr>
+    #end
+  </table></div>
+#end

venice-data/velocity/sysadmin/module_uninstall_result.vm

@@ -0,0 +1,39 @@
+#*
+  The contents of this file are subject to the Mozilla Public License Version 1.1
+  (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.mozilla.org/MPL/>.
+  
+  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+  WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+  language governing rights and limitations under the License.
+  
+  The Original Code is the Venice Web Communities System.
+  
+  The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+  for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+  Copyright (C) 2003 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+  
+  Contributor(s): 
+*#
+#*
+  Parameters:
+    module = The name of the module we were uninstalling
+    except = The exception that occurred if uninstall failed (null on success)
+    log    = List containing log messages from the uninstallation
+*#
+#header2( "Uninstall Module:" $module )
+#if( $except )
+  <p>The uninstallation of module <b>#encodeHTML( $module )</b> failed.  The following is the exception that was
+  thrown by uninstallation:</p>
+  <pre>#stacktrace( $except )</pre>
+#else
+  <p>The uninstallation of module <b>#encodeHTML( $module )</b> was completed successfully.</p>
+#end
+<p>The following are the log messages generated by module uninstallation:</p>
+<table border="1" width="100%" cellpadding="3" cellspacing="0"><tr><td class="content">
+  #foreach( $x in $log )
+    #encodeHTML( $x )<br />
+  #end
+</td></tr></table>
+<p><a href="sysadmin/module_uninstall.js.vs">Uninstall more modules</a></p>
+<p><a href="sysadmin/modules.js.vs">Return to previous menu</a></p>