implemented most of the Manage Conference functions - set pseud, fixseen,

conference edit, alias management, poster and lurker reports

src/com/silverwrist/venice/servlets/ConfOperations.java

@@ -21,6 +21,7 @@ import java.io.*;
 import javax.servlet.*;
 import javax.servlet.http.*;
 import org.apache.log4j.*;
+import com.silverwrist.util.StringUtil;
 import com.silverwrist.venice.ValidationException;
 import com.silverwrist.venice.core.*;
 import com.silverwrist.venice.servlets.format.*;
@@ -56,6 +57,23 @@ public class ConfOperations extends VeniceServlet
 
   } // end makeCreateConferenceDialog
 
+  private EditConferenceDialog makeEditConferenceDialog() throws ServletException
+  {
+    final String desired_name = "EditConferenceDialog";
+    DialogCache cache = DialogCache.getDialogCache(getServletContext());
+
+    if (!(cache.isCached(desired_name)))
+    { // create a template and save it off
+      EditConferenceDialog template = new EditConferenceDialog();
+      cache.saveTemplate(template);
+
+    } // end if
+
+    // return a new copy
+    return (EditConferenceDialog)(cache.getNewDialog(desired_name));
+
+  } // end makeEditConferenceDialog
+
   private static boolean validateNewTopic(ServletRequest request, String on_error) throws ErrorBox
   {
     boolean is_title_null, is_zp_null;
@@ -98,7 +116,7 @@ public class ConfOperations extends VeniceServlet
 
   protected VeniceContent doVeniceGet(HttpServletRequest request, VeniceEngine engine,
 				      UserContext user, RenderData rdat)
-    throws ServletException, IOException, VeniceServletResult
+      throws ServletException, IOException, VeniceServletResult
   {
     // get the SIG
     SIGContext sig = getSIGParameter(request,user,true,"top");
@@ -167,6 +185,106 @@ public class ConfOperations extends VeniceServlet
 
     } // end if ("FX" command)
 
+    if (cmd.equals("E"))
+    { // "E" = "Edit Conference Settings" (requires conference parameter)
+      ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
+
+      if (!(conf.canChangeConference()))
+	return new ErrorBox("Access Error","You are not permitted to change this conference's settings.",
+			    on_error);
+
+      // create and return the Edit Conference dialog
+      EditConferenceDialog dlg = makeEditConferenceDialog();
+      try
+      { // set up and return the dialog
+	dlg.setupDialog(sig,conf);
+	setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=E");
+	return dlg;
+
+      } // end try
+      catch (AccessError ae)
+      { // some sort of access error - display an error dialog
+	return new ErrorBox("Access Error",ae.getMessage(),on_error);
+
+      } // end catch
+      catch (DataException de)
+      { // database error retrieving the conference information
+	return new ErrorBox("Database Error","Database error getting conference information: "
+			    + de.getMessage(),on_error);
+
+      } // end catch
+
+    } // end if ("E" command)
+
+    if (cmd.equals("A"))
+    { // "A" = "Manage Aliases" (requires conference parameter)
+      ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
+
+      if (!(conf.canChangeConference()))
+	return new ErrorBox("Access Error","You are not permitted to change this conference's aliases.",
+			    on_error);
+
+      // process alias removal link
+      String remove = request.getParameter("rem");
+      if (!(StringUtil.isStringEmpty(remove)))
+      { // do removal of an alias
+	try
+	{ // go ahead and remove the alias!
+	  conf.removeAlias(remove);
+
+	} // end try
+	catch (AccessError ae)
+	{ // some sort of access error - display an error dialog
+	  return new ErrorBox("Access Error",ae.getMessage(),on_error);
+
+	} // end catch
+	catch (DataException de)
+	{ // database error creating the conference
+	  return new ErrorBox("Database Error","Database error removing alias: " + de.getMessage(),
+			      on_error);
+
+	} // end catch
+	
+      } // end if (removing an alias)
+
+      // display the "Manage Conference Aliases" display
+      try
+      { // generate the display box
+	setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=A");
+	return new ManageConferenceAliases(sig,conf);
+
+      } // end try
+      catch (DataException de)
+      { // error generating the display box
+	return new ErrorBox("Database Error","Database error displaying aliases: " + de.getMessage(),
+			    on_error);
+
+      } // end catch
+
+    } // end if ("A" command)
+
+    if (cmd.equals("RP") || cmd.equals("RR"))
+    { // "RP" = "Report Posters," "RR" = "Report Readers" (requires conference parameter)
+      ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
+
+      try
+      { // generate the listing on this page
+	setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=" + cmd);
+	return new ConferenceActivity(sig,conf,cmd.equals("RP"));
+
+      } // end try
+      catch (DataException de)
+      { // unable to get the data for the list
+	return new ErrorBox("Database Error","Database error displaying conference users: " + de.getMessage(),
+			    on_error);
+
+      } // end catch
+
+    } // end if ("RP" and "RR" commands)
+
     // Any unrecognized command shows us the conference list.
     on_error = "sigprofile?sig=" + sig.getSIGID();
     try
@@ -190,7 +308,7 @@ public class ConfOperations extends VeniceServlet
 
   protected VeniceContent doVenicePost(HttpServletRequest request, VeniceEngine engine,
 				       UserContext user, RenderData rdat)
-    throws ServletException, IOException, VeniceServletResult
+      throws ServletException, IOException, VeniceServletResult
   {
     // get the SIG
     SIGContext sig = getSIGParameter(request,user,true,"top");
@@ -331,12 +449,129 @@ public class ConfOperations extends VeniceServlet
       ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
       on_error = "confdisp?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
 
-      // TODO: finish this later
+      try
+      { // go set the pseud!
+	String pseud = request.getParameter("pseud");
+	if (pseud!=null)
+	  conf.setDefaultPseud(pseud);
 
-      return null;
+      } // end try
+      catch (DataException de)
+      { // oops - there was a problem!
+	return new ErrorBox("Database Error","Database error setting pseud: " + de.getMessage(),on_error);
+
+      } // end catch
+
+      return null;  // don't change the view
 
     } // end if ("P" command)
 
+    if (cmd.equals("E"))
+    { // "E" = "Edit Conference Settings" (requires conference parameter)
+      ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
+
+      if (!(conf.canChangeConference()))
+	return new ErrorBox("Access Error","You are not permitted to change this conference's settings.",
+			    on_error);
+
+      // create the dialog class
+      EditConferenceDialog dlg = makeEditConferenceDialog();
+
+      if (dlg.isButtonClicked(request,"cancel"))
+	throw new RedirectResult(on_error); // they chickened out - go back to the conference list
+
+      if (dlg.isButtonClicked(request,"update"))
+      { // they're changing the conference - do what you have to
+	dlg.loadValues(request); // load the form data
+
+	try
+	{ // run that baby!
+	  dlg.doDialog(conf);
+
+	  // success - return back to where we started from
+	  throw new RedirectResult(on_error);
+
+	} // end try
+	catch (ValidationException ve)
+	{ // validation error - throw it back to the user
+	  dlg.resetOnError(sig,conf,ve.getMessage() + " Please try again.");
+
+	} // end catch
+	catch (AccessError ae)
+	{ // some sort of access error - display an error dialog
+	  return new ErrorBox("Access Error",ae.getMessage(),on_error);
+
+	} // end catch
+	catch (DataException de)
+	{ // database error creating the conference
+	  return new ErrorBox("Database Error","Database error updating conference: " + de.getMessage(),
+			      on_error);
+
+	} // end catch
+
+	setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=E");
+	return dlg;  // redisplay the dialog
+
+      } // end if
+
+    } // end if ("E" command)
+
+    if (cmd.equals("A"))
+    { // "A" = "Add Alias" (requires conference parameter)
+      ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
+
+      if (!(conf.canChangeConference()))
+	return new ErrorBox("Access Error","You are not permitted to change this conference's settings.",
+			    on_error);
+
+      String new_alias = request.getParameter("alias");
+      if (StringUtil.isStringEmpty(new_alias))
+	return null;  // this is a no-op
+
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=A";
+      String error_message = null;
+
+      if (IDUtils.isValidVeniceID(new_alias))
+      { // the alias we have netered is perfectly valid...
+	try
+	{ // go ahead and add the alias!
+	  conf.addAlias(new_alias);
+
+	} // end try
+	catch (AccessError ae)
+	{ // some sort of access error - display an error dialog
+	  return new ErrorBox("Access Error",ae.getMessage(),on_error);
+
+	} // end catch
+	catch (DataException de)
+	{ // database error creating the conference
+	  return new ErrorBox("Database Error","Database error adding alias: " + de.getMessage(),
+			      on_error);
+
+	} // end catch
+	
+      } // end if
+      else  // alias is not valid
+	error_message = "The alias you have entered is not a valid identifier.  Please try again.";
+
+      // redisplay the "Manage Conference Aliases" display
+      try
+      { // generate the display box
+	setMyLocation(request,on_error);
+	return new ManageConferenceAliases(sig,conf);
+
+      } // end try
+      catch (DataException de)
+      { // error generating the display box
+	return new ErrorBox("Database Error","Database error displaying aliases: " + de.getMessage(),
+			    "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q");
+
+      } // end catch
+      
+    } // end if ("A" command)
+
     // unrecognized command!
     logger.error("invalid command to ConfOperations.doPost: " + cmd);
     return new ErrorBox("Internal Error","Invalid command to ConfOperations.doPost",on_error);

src/com/silverwrist/venice/servlets/format/ConferenceActivity.java

@@ -0,0 +1,139 @@
+/*
+ * 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) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.servlets.format;
+
+import java.util.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import com.silverwrist.venice.core.*;
+
+public class ConferenceActivity implements JSPRender
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  // Attribute name for request attribute
+  protected static final String ATTR_NAME = "com.silverwrist.venice.content.ConferenceActivity";
+
+  /*--------------------------------------------------------------------------------
+   * Attributes
+   *--------------------------------------------------------------------------------
+   */
+
+  private SIGContext sig;               // the SIG we're in
+  private ConferenceContext conf;       // the conference being listed
+  private boolean posters;              // is this a list of posters?
+  private List records;                 // the actual data records
+
+  /*--------------------------------------------------------------------------------
+   * Constructor
+   *--------------------------------------------------------------------------------
+   */
+
+  public ConferenceActivity(SIGContext sig, ConferenceContext conf, boolean posters) throws DataException
+  {
+    this.sig = sig;
+    this.conf = conf;
+    this.posters = posters;
+    if (posters)
+      this.records = conf.getActivePosters();
+    else
+      this.records = conf.getActiveReaders();
+
+  } // end constructor
+
+  /*--------------------------------------------------------------------------------
+   * External static functions
+   *--------------------------------------------------------------------------------
+   */
+
+  public static ConferenceActivity retrieve(ServletRequest request)
+  {
+    return (ConferenceActivity)(request.getAttribute(ATTR_NAME));
+
+  } // end retrieve
+
+  /*--------------------------------------------------------------------------------
+   * Implementations from interface VeniceContent
+   *--------------------------------------------------------------------------------
+   */
+
+  public String getPageTitle(RenderData rdat)
+  {
+    if (posters)
+      return "Users Posting in Conference " + conf.getName();
+    else
+      return "Users Reading Conference " + conf.getName();
+
+  } // end getPageTitle
+
+  /*--------------------------------------------------------------------------------
+   * Implementations from interface JSPRender
+   *--------------------------------------------------------------------------------
+   */
+
+  public void store(ServletRequest request)
+  {
+    request.setAttribute(ATTR_NAME,this);
+
+  } // end store
+
+  public String getTargetJSPName()
+  {
+    return "conf_activity.jsp";
+
+  } // end getTargetJSPName
+
+  /*--------------------------------------------------------------------------------
+   * External operations
+   *--------------------------------------------------------------------------------
+   */
+
+  public String getConfName()
+  {
+    return conf.getName();
+
+  } // end getConfName
+
+  public String getLocator()
+  {
+    return "sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
+
+  } // end getLocator
+
+  public boolean isPosterReport()
+  {
+    return posters;
+
+  } // end isPosterReport
+
+  public boolean anyElements()
+  {
+    return (records.size()>0);
+
+  } // end anyElements
+
+  public Iterator getRecordsIterator()
+  {
+    return records.iterator();
+
+  } // end getRecordsIterator
+
+} // end class ConferenceActivity

src/com/silverwrist/venice/servlets/format/ContentDialog.java

@@ -225,6 +225,12 @@ public class ContentDialog implements Cloneable, ContentRender
    *--------------------------------------------------------------------------------
    */
 
+  public void setTitle(String title)
+  {
+    this.title = title;
+
+  } // end setTitle
+
   public void setErrorMessage(String message)
   {
     this.error_message = message;

src/com/silverwrist/venice/servlets/format/EditConferenceDialog.java

@@ -0,0 +1,149 @@
+/*
+ * 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) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.servlets.format;
+
+import java.util.*;
+import com.silverwrist.util.StringUtil;
+import com.silverwrist.venice.ValidationException;
+import com.silverwrist.venice.security.Role;
+import com.silverwrist.venice.core.*;
+
+public class EditConferenceDialog extends ContentDialog
+{
+  /*--------------------------------------------------------------------------------
+   * Constructors
+   *--------------------------------------------------------------------------------
+   */
+
+  public EditConferenceDialog()
+  {
+    super("Edit Conference:",null,"editconfform","confops");
+    setHiddenField("cmd","E");
+    setHiddenField("sig","");
+    setHiddenField("conf","");
+
+    addFormField(new CDFormCategoryHeader("Basic Information"));
+    addFormField(new CDTextFormField("name","Conference Name",null,true,32,128));
+    addFormField(new CDTextFormField("descr","Description",null,false,32,255));
+    addFormField(new CDCheckBoxFormField("hide","Hide conference in the SIG's conference list",null,"Y"));
+    addFormField(new CDFormCategoryHeader("Security Information"));
+    addFormField(new CDRoleListFormField("read_lvl","Security level required to read conference",null,true,
+					 Role.getConferenceReadList()));
+    addFormField(new CDRoleListFormField("post_lvl","Security level required to post to conference",null,true,
+					 Role.getConferencePostList()));
+    addFormField(new CDRoleListFormField("create_lvl",
+					 "Security level required to create new topics in conference",null,
+					 true,Role.getConferenceCreateList()));
+    addFormField(new CDRoleListFormField("hide_lvl",
+					 "Security level required to archive or freeze topics",
+					 "(or to hide posts of which you are not the owner)",true,
+					 Role.getConferenceHideList()));
+    addFormField(new CDRoleListFormField("nuke_lvl",
+					 "Security level required to delete topics or nuke posts",
+					 "(or to scribble posts of which you are not the owner)",true,
+					 Role.getConferenceNukeList()));
+    addFormField(new CDRoleListFormField("change_lvl",
+					 "Security level required to change conference attributes",null,true,
+					 Role.getConferenceChangeList()));
+    addFormField(new CDRoleListFormField("delete_lvl",
+					 "Security level required to delete conference",null,true,
+					 Role.getConferenceDeleteList()));
+    addCommandButton(new CDImageButton("update","bn_update.gif","Update",80,24));
+    addCommandButton(new CDImageButton("cancel","bn_cancel.gif","Cancel",80,24));
+
+  } // end constructor
+
+  protected EditConferenceDialog(EditConferenceDialog other)
+  {
+    super(other);
+
+  } // end constructor
+
+  /*--------------------------------------------------------------------------------
+   * External operations
+   *--------------------------------------------------------------------------------
+   */
+
+  public void setupDialog(SIGContext sig, ConferenceContext conf) throws DataException, AccessError
+  {
+    setHiddenField("sig",String.valueOf(sig.getSIGID()));
+    setHiddenField("conf",String.valueOf(conf.getConfID()));
+    setTitle("Edit Conference: " + conf.getName());
+    setFieldValue("name",conf.getName());
+    setFieldValue("descr",conf.getDescription());
+    if (conf.getHideList())
+      setFieldValue("hide","Y");
+    else
+      setFieldValue("hide","");
+    setFieldValue("read_lvl",String.valueOf(conf.getReadLevel()));
+    setFieldValue("post_lvl",String.valueOf(conf.getPostLevel()));
+    setFieldValue("create_lvl",String.valueOf(conf.getCreateLevel()));
+    setFieldValue("hide_lvl",String.valueOf(conf.getHideLevel()));
+    setFieldValue("nuke_lvl",String.valueOf(conf.getNukeLevel()));
+    setFieldValue("change_lvl",String.valueOf(conf.getChangeLevel()));
+    setFieldValue("delete_lvl",String.valueOf(conf.getDeleteLevel()));
+
+  } // end setupDialog
+
+  public void doDialog(ConferenceContext conf) throws ValidationException, DataException, AccessError
+  {
+    final String yes = "Y";                // the "yes" string
+    validate();  // validate the dialog entries
+
+    int read_lvl, post_lvl, create_lvl, hide_lvl, nuke_lvl, change_lvl, delete_lvl;
+    try
+    { // get all the security levels out of their form fields
+      read_lvl = Integer.parseInt(getFieldValue("read_lvl"));
+      post_lvl = Integer.parseInt(getFieldValue("post_lvl"));
+      create_lvl = Integer.parseInt(getFieldValue("create_lvl"));
+      hide_lvl = Integer.parseInt(getFieldValue("hide_lvl"));
+      nuke_lvl = Integer.parseInt(getFieldValue("nuke_lvl"));
+      change_lvl = Integer.parseInt(getFieldValue("change_lvl"));
+      delete_lvl = Integer.parseInt(getFieldValue("delete_lvl"));
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // how rude!
+      throw new InternalStateError("somehow we got a non-numeric result from a numeric dropdown list!");
+
+    } // end catch
+
+    // sweep through the conference and set the appropriate changes
+    conf.setName(getFieldValue("name"));
+    conf.setDescription(getFieldValue("descr"));
+    conf.setHideList(yes.equals(getFieldValue("hide")));
+    conf.setSecurityLevels(read_lvl,post_lvl,create_lvl,hide_lvl,nuke_lvl,change_lvl,delete_lvl);
+
+  } // end doDialog
+
+  public void resetOnError(SIGContext sig, ConferenceContext conf, String message)
+  {
+    setHiddenField("sig",String.valueOf(sig.getSIGID()));
+    setHiddenField("conf",String.valueOf(conf.getConfID()));
+    setTitle("Edit Conference: " + conf.getName());
+    setErrorMessage(message);
+
+  } // end resetOnError
+
+  public Object clone()
+  {
+    return new EditConferenceDialog(this);
+
+  } // end clone
+
+} // end class EditConferenceDialog

src/com/silverwrist/venice/servlets/format/ManageConference.java

@@ -120,6 +120,12 @@ public class ManageConference implements JSPRender
 
   } // end getLocator
 
+  public String getDefaultPseud()
+  {
+    return conf.getDefaultPseud();
+
+  } // end getDefaultPseud
+
   public boolean displayAdminSection()
   {
     return conf.canChangeConference();

src/com/silverwrist/venice/servlets/format/ManageConferenceAliases.java

@@ -0,0 +1,154 @@
+/*
+ * 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) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.servlets.format;
+
+import java.util.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import com.silverwrist.venice.core.*;
+
+public class ManageConferenceAliases implements JSPRender
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  // Attribute name for request attribute
+  protected static final String ATTR_NAME = "com.silverwrist.venice.content.ManageConferenceAliases";
+
+  /*--------------------------------------------------------------------------------
+   * Attributes
+   *--------------------------------------------------------------------------------
+   */
+
+  private SIGContext sig;               // the SIG we're in
+  private ConferenceContext conf;       // the conference being listed
+  private List aliases;                 // list of aliases generated
+  private String error_message;         // error message to display
+
+  /*--------------------------------------------------------------------------------
+   * Constructors
+   *--------------------------------------------------------------------------------
+   */
+
+  public ManageConferenceAliases(SIGContext sig, ConferenceContext conf) throws DataException
+  {
+    this.sig = sig;
+    this.conf = conf;
+    this.aliases = conf.getAliases();
+    this.error_message = null;
+
+  } // end constructor
+
+  public ManageConferenceAliases(SIGContext sig, ConferenceContext conf, String message) throws DataException
+  {
+    this.sig = sig;
+    this.conf = conf;
+    this.aliases = conf.getAliases();
+    this.error_message = message;
+
+  } // end constructor
+
+  /*--------------------------------------------------------------------------------
+   * External static functions
+   *--------------------------------------------------------------------------------
+   */
+
+  public static ManageConferenceAliases retrieve(ServletRequest request)
+  {
+    return (ManageConferenceAliases)(request.getAttribute(ATTR_NAME));
+
+  } // end retrieve
+
+  /*--------------------------------------------------------------------------------
+   * Implementations from interface VeniceContent
+   *--------------------------------------------------------------------------------
+   */
+
+  public String getPageTitle(RenderData rdat)
+  {
+    return "Manage Conference Aliases: " + conf.getName();
+
+  } // end getPageTitle
+
+  /*--------------------------------------------------------------------------------
+   * Implementations from interface JSPRender
+   *--------------------------------------------------------------------------------
+   */
+
+  public void store(ServletRequest request)
+  {
+    request.setAttribute(ATTR_NAME,this);
+
+  } // end store
+
+  public String getTargetJSPName()
+  {
+    return "manage_aliases.jsp";
+
+  } // end getTargetJSPName
+
+  /*--------------------------------------------------------------------------------
+   * External operations
+   *--------------------------------------------------------------------------------
+   */
+
+  public int getSIGID()
+  {
+    return sig.getSIGID();
+
+  } // end getSIGID
+
+  public int getConfID()
+  {
+    return conf.getConfID();
+
+  } // end getConfID
+
+  public String getConfName()
+  {
+    return conf.getName();
+
+  } // end getConfName
+
+  public String getLocator()
+  {
+    return "sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
+
+  } // end getLocator
+
+  public boolean canRemoveAliases()
+  {
+    return (aliases.size()>1);
+
+  } // end canRemoveAliases
+
+  public Iterator getAliasIterator()
+  {
+    return aliases.iterator();
+
+  } // end getAliasIterator
+
+  public String getErrorMessage()
+  {
+    return error_message;
+
+  } // end getErrorMessage
+
+} // end class ManageConferenceAliases