If IdeaJam asks the community new ideas for improving Lotus Notes, RedTurtle Technology answer! 

Here is what was proposed by us recently.

Many thanks to John Mackey:

http://www.jmackey.net/groupwareinc/johnblog/johnblog.nsf/d6plinks/GROC-7G9GT4

and to Daniele Vistalli http://factor-y.com for this idea, for their help and the great powers.

Since Domino 8.5 is Eclipse based, you can switch to the Java perspective and add Java code to your project. The nsf database is the project.  (If you haven't done this yet, it is interesting to switch perspectives and look around at the structure and the code.)  By switching to the Java perspective, you open up your code to the importing or referencing of Java libraries, or the creation of your own classes.

Now we investigate how to create PDF using XPages. This tutorial summarize John's article, with some other things that you have to pay attention to.

Step by step.....

package mypackage;
import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;
/**
* First iText example: Hello World.
*/
public class Test {
      public static void createPdf(String filename) throws Exception {	
       try {
            Document document = new Document();
            PdfWriter.getInstance(document, new FileOutputStream(filename));
            document.open();
            document.add(new Paragraph("Hello World!"));
            document.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
     }
}

• select the project and then select Project->Properties from the menu (or right click)
• select the Java Build Path and click on Add Folder button.  Select the new source folder.  Click OK.
• In WebContent\WEB-INF add the folder called lib
• Right-click on it and select Import->File System->Browse and select itext jar (i.e iText-5.0.2.jar)
• import itext jar (i.e iText-5.0.2.jar) in your Java Build Path:  Project->Properties->Java Build Path->Libraries->Add Jar and select jar from WebContent\WEB-INF
• Note: you have to deploy jar in your server, in data\domino\java and append this line in notes.ini, JavaUserClasses variable

JavaUserClasses=......;C:\Programmi\IBM\Lotus\Domino\data\domino\java\iText-5.0.2.jar

this will not cause security problem when you call iText methods to generate PDF

function create(){ 
        mypackage.Test.createPdf("hello.pdf");
}

create();

That's all!

Sometimes, for some reason, you have to do it. I'm talking about the use of System.setProperty() method within a java agent. If you don't pay attention it's easy to get a null pointer as result. Infact I got it. 

After a quick search I found out a way to solve the issue:

I will use "jna.library.path" as example.

First of all add the following line in "java.policy" file (in the "jvm\lib\security" folder below the Domino program folder).

permission java.util.PropertyPermission "jna.library.path", "read,write";

After that, add the java code to your agent :

String jnaProperty = "jna.library.path";
if(System.getProperty(jnaProperty) == null) {
   System.setProperty(jnaProperty,"your path");
}

In a Java agent, If you are accessing your document via agentContext.getDocumentContext(), I've found a problem in managing attachment with extractFile method

Error found is "a database handle to a remote database cannot be used by more than one thread"

This is my workaround.

Instead of doing:

AgentContext agentContext = session.getAgentContext();
lotus.domino.Document inDoc = agentContext.getDocumentContext();
Database db = agentContext.getCurrentDatabase();

 try doing this : 

AgentContext agentContext = session.getAgentContext();
lotus.domino.Document inDoc = agentContext.getDocumentContext();
String unid = inDoc.getUniversalID();
inDoc.recycle();
Database db = agentContext.getCurrentDatabase();
lotus.domino.Document inDoc2 = db.getDocumentByUNID( unid );

Now works!

Customer request was: 

Disable replication on the database if user never replicate it in the last week

User only has author rights in ACL database (which is a replica of a management deployed on n users laptops) 
How to get it programmatically even if the user has no rights manager? 

If you try to access the object NotesReplication and try to do something like that:

Dim session As New NotesSession
Dim db As NotesDatabase
Dim rep As NotesReplication
Set db = session.CurrentDatabase
Set rep = db.ReplicationInfo
If rep.Disabled Then
  rep.Disabled = False
End If
Call rep.Save()

"Error supplied to access product object method" 

Dim rc As Integer 

Type DBREPLICAINFO 
ID AS TIMED 
flags As Integer 
CutoffInterval As Integer 
As cutoff TimeDate 
End Type 

Declare Function Lib W32_NSFDbOpen "nnotes.dll" Alias "NSFDbOpen" (ByVal dbname As String, hdb As Long) As Integer 
Declare Function Lib W32_NSFDbClose "nnotes.dll" Alias "NSFDbClose" (ByVal hdb As Long) As Integer 
Declare Function Lib W32_NSFDbReplicaInfoGet "nnotes.dll" Alias "NSFDbReplicaInfoGet" (ByVal HDB As Long As retReplicationInfo DBREPLICAINFO) As Integer 
Declare Function Lib W32_NSFDbReplicaInfoSet "nnotes.dll" Alias "NSFDbReplicaInfoSet" (ByVal HDB As Long As retReplicationInfo DBREPLICAINFO) As Integer 
Declare Function Lib W32_OSLockObject "nnotes.dll" Alias "OSLockObject" (ByVal handle) As Long 
Declare Sub OSUnlockObject Lib "NNOTES.DLL" Alias "OSUnlockObject" (ByVal handle) 
Declare Sub W32_OSMemFree Lib "NNOTES.DLL" Alias "OSMemFree" (ByVal handle) 


Class NotesReplicationSettings 

Private hdb As Long 
As private retReplicationInfo DBREPLICAINFO 
Private prvdb As NotesDatabase 
Private flgDBExist As Integer 

Sub Delete 
If hdb <> 0 Then Call W32_NSFDbClose (hdb) 
End Sub 

Sub New (inpNotesDatabase As NotesDatabase) 

As String Dim sDatabase 
As New NotesSession Dim uaesession 
Dim rc As Integer 

Me.flgDBExist = False 

'Get a valid NotesDatabase to the specified database 
If inpNotesDatabase Is Nothing Then 
Error 14104, "NotesUserActivity: Object Database is invalid" 
Exit Sub 
End If 

September prvdb = New NotesDatabase (inpNotesDatabase.Server, inpNotesDatabase.FilePath) 

If (prvdb.Server = "") Or (uaesession.IsOnServer) Then 
sdatabase = prvdb.filepath 
Else 
sdatabase prvdb.server = + "!" + Prvdb.filepath 
End If 

'Open the target database 
rc = W32_NSFDbOpen (sDatabase, Me.hDb) 
If rc <> 0 Then 
Me.flgDBExist = False 
End If 

'Set the Replication Information 
rc = W32_NSFDbReplicaInfoGet (Me.hDb, Me.retReplicationInfo) 
If rc <> 0 Then 
Me.flgDBExist = False 
End If 
Me.flgDBExist = True 
End Sub 

DBExist As Integer Public Function 
DBExist = Me.flgDBExist 
End Function 

Public Function Parent As NotesDatabase 
Set Parent = prvdb 
End Function 

Public Function SetDisableReplica (sFlag As Integer) As Integer 

As Long Dim puActivity 

If Not Then Me.flgDBExist 
Error 14104, "Notes DB not opened" 
SetDisableReplica = False 
Exit Function 
End If 

Me.retReplicationInfo.flags = (Me.retReplicationInfo.flags Or & H4) 

rc = W32_NSFDbReplicaInfoSet (Me.hDb, Me.retReplicationInfo) 
If rc <> 0 Then 
Me.flgDBExist = False 
End If 

End Function 
End Class

Dim nrs As New NotesReplicationSettings (db)  

and disable (or enable depending on the parameter that is passed, 1 or 0) replication: 

nrs.SetDisableReplica (1)  

or  

nrs.SetDisableReplica (0)  

And that's all

Best practies in pillole:

• Pay attention to console errors!!
• Are you using default settings?
• Are your servers too open?
• Know your schedules
• Keep your servers clean
• Clustered server tips
• ID management
• New features not implemented
• Policies – are you using them?
• Maintenance tasks
• Get to the new ODS

Bob Balfe ha presentato due interessantissime CA realizzate con la versione 8.5.1 e illustrato i nuovi oggetti:

• Synphony Spreadsheet Container
• Web Browser container

• Host on Demand container
• Notes Document Container
• Notes View container

Ed inoltre, per il futuro:

• CAI URL enhancement - pagealias
• Role based access to components

Peccato per la scarsità dei talk riguardanti l'argomento, ma di sicuro Balfe, Guru assoluto in materia, ha alzato ai massimi livelli la qualità del suo intervento.

Annunciate le novità per le XPages (nella 8.5.2)

- REST e nuovi advanced controls
- modalità off-line e repliche locali
- wiring con le composite applications
- Performance improvements
- iWidget mashup
- hidden field text control
- RichText editor migliorato
- riuso delle funzionalità esistenti: LS libraries, forms, vies
- utility per convertire vecchi form, viste in xpages
- nuovi DataSource (jdbc, db relazionali)

Tips&Tricks veramente utili per incrementare le performace

- i tool di monitoring consigliati: Firebug, YSlow, PageSpeed
- IBM Xpages Profiling tool: database per il tuning delle XPages in termini di CPU, cache ecc...
- consigli per il rendering delle pagine e per migliorare il JSF cycle lifecycle

- dataCache per le viste (nuovo nella 8.5.1)

- come usare Java nelle XPages per mantenere performance ridotte