Example: /SQL/SQLDatabaseMBS PostgreSQL Notify and Listen

Online Documentation   -   Statistics   -   FAQ   -   Plugin Parts (All, Dependencies)   -   Class hierarchy

New in Version 22.2 22.3 22.4 22.5 23.0 23.1 23.2 23.3 23.4 23.5 24.0 24.1

The list of the   topics,   classes,   interfaces,   controls,   modules,   global methods by category,   global methods by name,   screenshots,   licenses   and   examples.

Platforms to show: All Mac Windows Linux Cross-Platform

/SQL/SQLDatabaseMBS PostgreSQL Notify and Listen


Required plugins for this example: MBS Util Plugin, MBS SQL Plugin

You find this example project in your Plugins Download as a Xojo project file within the examples folder: /SQL/SQLDatabaseMBS PostgreSQL Notify and Listen

This example is the version from Wed, 3rd Mar 2015.

Project "SQLDatabaseMBS PostgreSQL Notify and Listen.xojo_binary_project"
Class App Inherits Application
Const kEditClear = "&Löschen"
Const kFileQuit = "Beenden"
Const kFileQuitShortcut = ""
EventHandler Sub Open() db = new mySQLDatabaseMBS // this is path for a Mac, your path will be different! dim libPath as string = "/Library/PostgreSQL/9.1/lib/libpq.5.4.dylib" db.Option(db.kOptionLibraryPostgreSQL) = libPath // connect to database // in this example it is Postr, // but can also be Sybase, Oracle, Informix, DB2 // SQLServer, InterBase, SQLBase and ODBC db.DatabaseName="PostgreSQL:127.0.0.1,5432@postgres" db.UserName="postgres" db.Password="xxx" if db.Connect then // tell server to send notifications to us db.SQLExecute "LISTEN test;" // listen for notifications db.Listen else MsgBox db.ErrorMessage quit end if End EventHandler
Property db As SQLDatabaseMBS
End Class
MenuBar MenuBar1
MenuItem FileMenu = "&Ablage"
MenuItem FileQuit = "#App.kFileQuit"
MenuItem EditMenu = "&Bearbeiten"
MenuItem EditUndo = "&Rückgängig"
MenuItem UntitledMenu1 = "-"
MenuItem EditCut = "&Ausschneiden"
MenuItem EditCopy = "&Kopieren"
MenuItem EditPaste = "&Einfügen"
MenuItem EditClear = "#App.kEditClear"
MenuItem UntitledMenu0 = "-"
MenuItem EditSelectAll = "&Alles auswählen"
End MenuBar
Class mySQLDatabaseMBS Inherits SQLDatabaseMBS
EventHandler Sub PostgresNotification(NotificationName as string, PID as Integer, Extras as String) dim m as string = NotificationName if pid <> 0 then m = m + " (ProcessID: "+str(pid)+")" end if if Extras <> "" then m = m + " "+Extras end if window1.Listbox1.AddRow m End EventHandler
EventHandler Sub Trace(traceInfo as integer, SQL as string, Command as SQLCommandMBS) window1.Listbox1.AddRow "Trace: "+sql End EventHandler
End Class
Class Window1 Inherits Window
Control Listbox1 Inherits Listbox
ControlInstance Listbox1 Inherits Listbox
End Control
Control PushButton1 Inherits PushButton
ControlInstance PushButton1 Inherits PushButton
EventHandler Sub Action() // send notification with name test dim db as database = app.db db.SQLExecute "NOTIFY test" End EventHandler
End Control
Control Label1 Inherits Label
ControlInstance Label1 Inherits Label
EventHandler Sub Open() me.Text = "My Process ID: "+str(ProcessMBS.CurrentProcessID) End EventHandler
End Control
End Class
End Project

See also:

The items on this page are in the following plugins: MBS SQL Plugin.


💬 Ask a question or report a problem