Wednesday, 28 September 2011

Keep view position between (x)pages

By default xpages doesnot keep the position of the view (pageno.) when going to another page. So when you go back to the view page from another page, the view will display from the first entry (and page) again. Not very userfriendly if you had just left it from page 3.
You will have to make the view page remember its position by storing the number of the first row on the page in a scoped variable.
In the "beforeRenderResponse" event add the following code:

   var c = getComponent("viewPanel");
   if (c) {
       sessionScope.put("viewFirst"+view.getPageName()
, c.first);
   }
"viewPanel" is the id of your view control of course.
And in the view control's All properties - first - add the code:

   var vwFirst = sessionScope.get("viewFirst"+view.getPageName());
   if (vwFirst) return vwFirst;

This will also work when displaying data tables through a repeat control.

Used sources:
xpageswiki.com 

 

Monday, 19 September 2011

LotusSquash - 29 september 2011 postponed to 27 october

LotusSquash: playing squash with other Lotus geeks - a friendly training session open for players of all levels and Lotus geeks of all levels - a quarterly event organised around the country.
Non Lotus geeks are welcome too ;-)

It is also an alternative, nice and sporty way of networking and chatting about IBM Lotus stuff. Watch for updates via twitter #lotussquash.
Let us know if you want to join via twitter or post a comment here.

Next LotusSquash:
Date: thursday 29 september postponed to 27 oktober
Time: 19:00 hrs
Where: Squash & Cardiofit Centrum Zwolle
Address: Dobbe 69, 8032 JX Zwolle (NL)
Organised by: TooConnect Software Solutions

Tuesday, 13 September 2011

Final version of DbLookupArray & DbColumnArray

Time to post the final version (I think) of the DbLookupArray and DbColumnArray functions, which I started blogging about a couple of months ago.
To date these functions only worked on the current database. So now I have added the option to also execute on another database on another server (beware that proper authorisation is in place).
The server will only be used when a database name is provided. In both cases, if omitted, the current server/database is used.
And the final added option is to be able to request the results back in a sorted order.

DbLookup
 /**  
  * Returns @DbLookup results as array and allows for cache  
  * @param server -name of the server the database is on (only used if dbname not empty, if omitted, the server of the current database is used)  
  * @param dbname -name of the database (if omitted the current database is used)  
  * @param cache -"cache" for using cache, empty or anything for nocache  
  * @param unique -"unique" for returning only unique values, empty or anything for all results  
  * @param sortit -"sort" for returning the values sorted alphabetically  
  * @param viewname -name of the view  
  * @param keyname -key value to use in lookup  
  * @param field -field name in the document or column number to retrieve  
  * @return array with requested results  
  */  
 function DbLookupArray(server, dbname, cache, unique, sortit, viewname, keyname, field) {  
      var cachekey = "dblookup_"+dbname+"_"+@ReplaceSubstring(viewname," ","_")+"_"+@ReplaceSubstring(keyname," ","_")+"-"+@ReplaceSubstring(field," ","_");  
      // if cache is specified, try to retrieve the cache from the sessionscope  
      if (cache.equalsIgnoreCase('cache')) {   
           var result = sessionScope.get(cachekey);  
      }  
      // if the result is empty, no cache was available or not requested,  
      //  do the dblookup, convert to array if not, cache it when requested  
      if (!result) {  
           // determine database to run against  
           var db = "";  
           if (!dbname.equals("")) { // if a database name is passed, build server, dbname array  
                if (server.equals("")){  
                     db = new Array(@DbName()[0],dbname); // no server specified, use server of current database  
                } else {  
                     db = new Array(server, dbname)  
                }   
           }  
           var result = @DbLookup(db, viewname, keyname, field);  
           if (result && unique.equalsIgnoreCase("unique")) result = @Unique(result);  
           if (result && typeof result == "string") result = new Array(result);  
           if (result && sortit.equalsIgnoreCase("sort")) result.sort();  
           if (result && cache.equalsIgnoreCase('cache')) sessionScope.put(cachekey,result);  
      }  
      return result;  
 }  
DbColumn
 /**  
  * Returns @DbColumn results as array and allows for cache  
  * @param server -name of the server the database is on (only used if dbname not empty, if omitted, the server of the current database is used)  
  * @param dbname -name of the database (if omitted the current database is used)  
  * @param cache -"cache" for using cache, empty or anything for nocache  
  * @param unique -"unique" for returning only unique values, empty or anything for all results  
  * @param sortit -"sort" for returning the values sorted alphabetically  
  * @param viewname -name of the view   
  * @param column -column number to retrieve  
  * @return array with requested results  
  */  
 function DbColumnArray(server, dbname, cache, unique, sortit, viewname, column) {  
      var cachekey = "dbcolumn_"+dbname+"_"+@ReplaceSubstring(viewname," ","_")+"_"+@ReplaceSubstring(column," ","_");  
      // if cache is specified, try to retrieve the cache from the sessionscope  
      if (cache.equalsIgnoreCase('cache')) {   
           var result = sessionScope.get(cachekey);  
      }  
      // if the result is empty, no cache was available or not requested,  
      //  do the dbcolumn, convert to array if not, cache it when requested  
      if (!result) {  
           // determine database to run against  
           var db = "";  
           if (!dbname.equals("")) { // if a database name is passed, build server, dbname array  
                if (server.equals("")){  
                     db = new Array(@DbName()[0],dbname); // no server specified, use server of current database  
                } else {  
                     db = new Array(server, dbname)  
                }   
           }  
           var result = @DbColumn(db, viewname, column);  
           if (result && unique.equalsIgnoreCase("unique")) result = @Unique(result);  
           if (result && typeof result == "string") result = new Array(result);  
           if (result && sortit.equalsIgnoreCase("sort")) result.sort();  
           if (result && cache.equalsIgnoreCase('cache')) sessionScope.put(cachekey,result);  
      }       
      return result;  
 }  

Used sources:
xpageswiki.com