fully implemented conference membership management and delete conference -

now almost all the conference functionality is in place

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

@@ -18,6 +18,7 @@
 package com.silverwrist.venice.servlets;
 
 import java.io.*;
+import java.util.*;
 import javax.servlet.*;
 import javax.servlet.http.*;
 import org.apache.log4j.*;
@@ -33,6 +34,9 @@ public class ConfOperations extends VeniceServlet
    *--------------------------------------------------------------------------------
    */
 
+  private static final String DELETE_CONFIRM_ATTR = "servlets.ConfOperations.delete.confirm";
+  private static final String DELETE_CONFIRM_PARAM = "confirm";
+
   private static Category logger = Category.getInstance(ConfOperations.class.getName());
 
   /*--------------------------------------------------------------------------------
@@ -174,6 +178,11 @@ public class ConfOperations extends VeniceServlet
 	conf.fixSeen();
 
       } // 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)
       { // some sort of error in the database
 	return new ErrorBox("Database Error","Database error catching up conference: " + de.getMessage(),
@@ -282,9 +291,84 @@ public class ConfOperations extends VeniceServlet
 			    on_error);
 
       } // 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
 
     } // end if ("RP" and "RR" commands)
 
+    if (cmd.equals("M"))
+    { // "M" - Manage Conference Membership (requires conference parameter)
+      ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
+
+      try
+      { // display the conference member list!
+	ConferenceMembership m = new ConferenceMembership(engine,sig,conf);
+	m.doConferenceMemberList();
+	setMyLocation(request,"confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=M");
+	return m;
+
+      } // end try
+      catch (DataException de)
+      { // something wrong in the database
+	return new ErrorBox("Database Error","Database error listing conference members: " + de.getMessage(),
+			    on_error);
+
+      } // end catch
+      catch (AccessError ae)
+      { // some lack of access is causing problems
+	return new ErrorBox("Access Error",ae.getMessage(),on_error);
+
+      } // end catch
+
+    } // end if ("M" command)
+
+    if (cmd.equals("DEL"))
+    { // "DEL" = "Delete Conference (requires conference parameter)
+      ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=Q";
+
+      if (!(conf.canDeleteConference()))
+	return new ErrorBox("Access Error","You do not have permission to delete this conference.",on_error);
+
+      if (ConfirmBox.isConfirmed(request,DELETE_CONFIRM_ATTR,DELETE_CONFIRM_PARAM))
+      { // we are confirmed - delete the conference!
+	try
+	{ // tell it to go away
+	  conf.delete();
+
+	} // end try
+	catch (DataException de)
+	{ // something wrong in the database
+	  return new ErrorBox("Database Error","Database error deleting conference: " + de.getMessage(),
+			      on_error);
+
+	} // end catch
+	catch (AccessError ae)
+	{ // some lack of access is causing problems
+	  return new ErrorBox("Access Error",ae.getMessage(),on_error);
+
+	} // end catch
+
+	// that's it - trap back to the main conference list
+	throw new RedirectResult("confops?sig=" + sig.getSIGID());
+
+      } // end if
+      else
+      { // generate a confirmation box and wait for confirmation
+	String message = "You are about to permanently delete the \"" + conf.getName() + "\" conference!  "
+	               + "Are you sure you want to do this?";
+	return new ConfirmBox(request,DELETE_CONFIRM_ATTR,DELETE_CONFIRM_PARAM,"Delete Conference",message,
+			      "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=DEL",
+			      on_error);
+
+      } // end else
+
+    } // end if ("DEL" command)
+
     // Any unrecognized command shows us the conference list.
     on_error = "sigprofile?sig=" + sig.getSIGID();
     try
@@ -572,6 +656,124 @@ public class ConfOperations extends VeniceServlet
       
     } // end if ("A" command)
 
+    if (cmd.equals("M"))
+    { // "M" - Manage Conference Membership (requires conference parameter)
+      ConferenceContext conf = getConferenceParameter(request,sig,true,on_error);
+      on_error = "confops?sig=" + sig.getSIGID() + "&conf=" + conf.getConfID() + "&cmd=M";
+
+      if (isImageButtonClicked(request,"update"))
+      { // the "update" command that changes all the security levels
+	HashMap org_vals = new HashMap();
+	HashMap new_vals = new HashMap();
+	try
+	{ // retrieve all parameters and filter them for the levels
+	  Enumeration p_names = request.getParameterNames();
+	  while (p_names.hasMoreElements())
+	  { // examine each parameter name in turn
+	    String p_name = (String)(p_names.nextElement());
+	    if (p_name.startsWith("zxcur_"))
+	    { // this is a current value (from a hidden field)
+	      int uid = Integer.parseInt(p_name.substring(6));
+	      int level = Integer.parseInt(request.getParameter(p_name));
+	      org_vals.put(new Integer(uid),new Integer(level));
+
+	    } // end if
+	    else if (p_name.startsWith("zxnew_"))
+	    { // this is a new value (from a dropdown list box)
+	      int uid = Integer.parseInt(p_name.substring(6));
+	      int level = Integer.parseInt(request.getParameter(p_name));
+	      new_vals.put(new Integer(uid),new Integer(level));
+
+	    } // end else if
+
+	  } // end while
+
+	  if (org_vals.size()!=new_vals.size())
+	    return new ErrorBox(null,"Invalid parameters.",on_error);
+
+	} // end try
+	catch (NumberFormatException nfe)
+	{ // error converting the parameters
+	  return new ErrorBox(null,"Invalid parameter conversion.",on_error);
+
+	} // end catch
+
+	try
+	{ // loop through the hashmaps and set the value
+	  Iterator it = org_vals.keySet().iterator();
+	  while (it.hasNext())
+	  { // extract the UID, old level, and new level
+	    Integer uid = (Integer)(it.next());
+	    Integer org_level = (Integer)(org_vals.get(uid));
+	    Integer new_level = (Integer)(new_vals.get(uid));
+	    if (new_level==null)   // whoops
+	      return new ErrorBox(null,"Invalid new level parameter.",on_error);
+	    int new_level_x = new_level.intValue();
+	    if (new_level_x==0)
+	      new_level_x = -1;
+
+	    // call down to set the membership level
+	    if (org_level.intValue()!=new_level_x)
+	      conf.setMembership(uid.intValue(),new_level_x);
+
+	  } // end while
+
+	} // 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 setting memberships: " + de.getMessage(),
+			      on_error);
+
+	} // end catch
+	
+	// trap back to the conference membership display
+	throw new RedirectResult(on_error);
+
+      } // end if ("update" clicked)
+
+      if (   isImageButtonClicked(request,"search") || isImageButtonClicked(request,"previous")
+	  || isImageButtonClicked(request,"next"))
+      { // create the new dialog box
+	ConferenceMembership m = new ConferenceMembership(engine,sig,conf);
+
+	try
+	{ // perform the search!
+	  m.doSearch(request);
+
+	} // end try
+	catch (ValidationException ve)
+	{ // validation error - throw it back to the user
+	  return new ErrorBox(null,ve.getMessage() + " Please try again.",on_error);
+
+	} // 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,on_error);
+	return m;
+
+      } // end if (search function clicked)
+
+      // we don't know what button was pressed
+      logger.error("no known button click on ConfOperations.doPost, cmd=M");
+      return new ErrorBox("Internal Error","Unknown command button pressed",on_error);
+
+    } // end if ("M" 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

@@ -47,7 +47,8 @@ public class ConferenceActivity implements JSPRender
    *--------------------------------------------------------------------------------
    */
 
-  public ConferenceActivity(SIGContext sig, ConferenceContext conf, boolean posters) throws DataException
+  public ConferenceActivity(SIGContext sig, ConferenceContext conf, boolean posters)
+      throws DataException, AccessError
   {
     this.sig = sig;
     this.conf = conf;

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

@@ -0,0 +1,337 @@
+/*
+ * 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.io.*;
+import java.util.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import com.silverwrist.venice.ValidationException;
+import com.silverwrist.venice.security.Role;
+import com.silverwrist.venice.core.*;
+
+public class ConferenceMembership implements JSPRender, SearchMode
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  // Attribute name for request attribute
+  protected static final String ATTR_NAME = "com.silverwrist.venice.content.ConferenceMembership";
+
+  /*--------------------------------------------------------------------------------
+   * Attributes
+   *--------------------------------------------------------------------------------
+   */
+
+  private VeniceEngine engine;            // reference to the engine
+  private SIGContext sig;                 // the SIG we're in
+  private ConferenceContext conf;         // the conference being listed
+  private List display_list = null;       // list of members to display
+  private boolean conf_members = false;   // is this a list of conference members?
+  private int field = -1;                 // search field
+  private int mode = -1;                  // search mode
+  private String term = null;             // search term
+  private int offset = 0;                 // search result offset
+  private int find_count = -1;            // search results count
+  private List role_choices;              // the list of security roles
+
+  /*--------------------------------------------------------------------------------
+   * Constructors
+   *--------------------------------------------------------------------------------
+   */
+
+  public ConferenceMembership(VeniceEngine engine, SIGContext sig, ConferenceContext conf)
+  {
+    this.engine = engine;
+    this.sig = sig;
+    this.conf = conf;
+    this.role_choices = Role.getConferenceMemberLevelChoices();
+
+  } // end constructor
+
+  /*--------------------------------------------------------------------------------
+   * Internal functions
+   *--------------------------------------------------------------------------------
+   */
+
+  private static int getParamInt(ServletRequest request, String name, int default_val)
+  {
+    String str = request.getParameter(name);
+    if (str==null)
+      return -1;
+
+    try
+    { // parse the integer value
+      return Integer.parseInt(str);
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // in case of conversion error, return default
+      return default_val;
+
+    } // end catch
+
+  } // end getParamInt
+
+  private static boolean isImageButtonClicked(ServletRequest request, String name)
+  {
+    String val = request.getParameter(name + ".x");
+    return (val!=null);
+
+  } // end isImageButtonClicked
+
+  /*--------------------------------------------------------------------------------
+   * External static functions
+   *--------------------------------------------------------------------------------
+   */
+
+  public static ConferenceMembership retrieve(ServletRequest request)
+  {
+    return (ConferenceMembership)(request.getAttribute(ATTR_NAME));
+
+  } // end retrieve
+
+  /*--------------------------------------------------------------------------------
+   * Implementations from interface VeniceContent
+   *--------------------------------------------------------------------------------
+   */
+
+  public String getPageTitle(RenderData rdat)
+  {
+    return "Membership in 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_member.jsp";
+
+  } // end getTargetJSPName
+
+  /*--------------------------------------------------------------------------------
+   * External operations
+   *--------------------------------------------------------------------------------
+   */
+
+  public void doConferenceMemberList() throws DataException, AccessError
+  {
+    this.display_list = conf.getMemberList();
+    this.conf_members = true;
+    this.term = "";
+
+  } // end doConferenceMemberList
+
+  public void doSearch(ServletRequest request) throws ValidationException, DataException, AccessError
+  {
+    // Validate the search field parameter.
+    field = getParamInt(request,"field",FIELD_USER_NAME);
+    if (   (field!=FIELD_USER_NAME) && (field!=FIELD_USER_DESCRIPTION) && (field!=FIELD_USER_GIVEN_NAME)
+	   && (field!=FIELD_USER_FAMILY_NAME))
+      throw new ValidationException("The field search parameter is not valid.");
+
+    // Validate the search mode parameter.
+    mode = getParamInt(request,"mode",SEARCH_PREFIX);
+    if ((mode!=SEARCH_PREFIX) && (mode!=SEARCH_SUBSTRING) && (mode!=SEARCH_REGEXP))
+      throw new ValidationException("The search mode parameter is not valid.");
+
+    // Retrieve the search term parameter.
+    term = request.getParameter("term");
+    if (term==null)
+      term = "";
+
+    // Retrieve the offset and find count parameters.
+    offset = getParamInt(request,"ofs",0);
+    find_count = getParamInt(request,"fcount",-1);
+
+    // Adjust the search return offset based on the command button click.
+    int count = getNumResultsDisplayed();
+    if (isImageButtonClicked(request,"search"))
+      offset = 0;
+    else if (isImageButtonClicked(request,"previous"))
+    { // adjust the offset in the reverse direction
+      offset -= count;
+      if (offset<0)
+	offset = 0;
+
+    } // end else if
+    else if (isImageButtonClicked(request,"next"))
+      offset += count;  // go forwards instead
+    else
+      throw new ValidationException("Unable to determine what action triggered the form.");
+
+    // Perform the search!
+    List intermediate = sig.searchForMembers(field,mode,term,offset,count);
+    if (find_count<0)
+      find_count = sig.getSearchMemberCount(field,mode,term);
+
+    // Create the real display list by getting the conference security levels.
+    Iterator it = intermediate.iterator();
+    Vector rc = new Vector(count+1);
+    while (it.hasNext())
+    { // loop around and find the member level of every one
+      UserFound uf = (UserFound)(it.next());
+      int new_level = conf.getMemberLevel(uf.getUID());
+      if (new_level==-1)
+	new_level = 0;
+      rc.add(uf.createNewLevel(new_level));
+
+    } // end while
+
+    display_list = rc;  // save display list for display
+
+  } // end doSearch
+
+  public int getSIGID()
+  {
+    return sig.getSIGID();
+
+  } // end getSIGID
+
+  public int getConfID()
+  {
+    return conf.getConfID();
+
+  } // end getConfID
+
+  public String getSIGName()
+  {
+    return sig.getName();
+
+  } // end getSIGName
+
+  public String getConfName()
+  {
+    return conf.getName();
+
+  } // end getConfName
+
+  public String getLocator()
+  {
+    return "sig=" + sig.getSIGID() + "&conf=" + conf.getConfID();
+
+  } // end getLocator
+
+  public boolean displayList()
+  {
+    if ((display_list==null) || (display_list.size()==0))
+      return false;
+    if (conf_members && (display_list.size()>engine.getMaxNumConferenceMembersDisplay()))
+      return false;
+    return true;
+
+  } // end displayList
+
+  public boolean conferenceMemberList()
+  {
+    return conf_members;
+
+  } // end conferenceMemberList
+
+  public int getSearchField()
+  {
+    return field;
+
+  } // end getSearchField
+
+  public int getSearchMode()
+  {
+    return mode;
+
+  } // end getSearchMode
+
+  public boolean searchFieldIs(int value)
+  {
+    return (field==value);
+
+  } // end searchFieldIs
+
+  public boolean searchModeIs(int value)
+  {
+    return (mode==value);
+
+  } // end searchModeIs
+
+  public String getSearchTerm()
+  {
+    return term;
+
+  } // end getSearchTerm
+
+  public int getFindCount()
+  {
+    return find_count;
+
+  } // end getFindCount
+
+  public int getOffset()
+  {
+    return offset;
+
+  } // end getOffset
+
+  public int getSize()
+  {
+    return display_list.size();
+
+  } // end getSize
+
+  public int getNumResultsDisplayed()
+  {
+    return engine.getStdNumSearchResults();
+
+  } // end getNumResultsDisplayed
+
+  public UserFound getItem(int ndx)
+  {
+    return (UserFound)(display_list.get(ndx));
+
+  } // end getItem
+
+  public void outputDropDown(Writer out, int uid, int cur_level) throws IOException
+  {
+    out.write("<INPUT TYPE=HIDDEN NAME=\"zxcur_" + uid + "\" VALUE=\"" + cur_level + "\">\n");
+    out.write("<SELECT NAME=\"zxnew_" + uid + "\" SIZE=1>\n");
+    Iterator it = role_choices.iterator();
+    while (it.hasNext())
+    { // output the <OPTION> lines for the dropdown
+      Role r = (Role)(it.next());
+      out.write("<OPTION VALUE=\"" + r.getLevel() + "\"");
+      if (r.getLevel()==cur_level)
+	out.write(" SELECTED");
+      out.write(">" + r.getName() + "</OPTION>\n");
+
+    } // end while
+
+    out.write("</SELECT>\n");
+
+  } // end outputDropDown
+
+} // end class ConferenceMembership

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

@@ -66,7 +66,7 @@ public class ConfirmBox implements ContentRender
     this.conf_num = rng.nextInt(0x1000000);
     this.title = title;
     this.message = message;
-    this.confirm_url = confirm_url + "&" + param_name + "=" + String.valueOf(this.conf_num);
+    this.confirm_url = confirm_url + "&" + param_name + "=" + this.conf_num;
     this.deny_url = deny_url;
 
     // Stash this object in the HTTP session.