Try to reopen broken postgres connection

mhugent · mhugent · commit 684398e9788a · 2011-08-03T13:14:49.000+02:00
diff --git a/src/providers/postgres/qgspostgresprovider.cpp b/src/providers/postgres/qgspostgresprovider.cpp
@@ -439,9 +439,14 @@ bool QgsPostgresProvider::declareCursor(
 
     if ( !connectionRO->openCursor( cursorName, query ) )
     {
-      // reloading the fields might help next time around
-      rewind();
-      return false;
+      //try to re-etablish broken connection
+      ::PQreset( connectionRO->pgConnection() );
+      if ( !connectionRO->openCursor( cursorName, query ) )
+      {
+        // reloading the fields might help next time around
+        rewind();
+        return false;
+      }
     }
   }
   catch ( PGFieldNotFound )

Original file line number	Diff line number	Diff line change
`@@ -439,9 +439,14 @@ bool QgsPostgresProvider::declareCursor(`
`439`	`439`
`440`	`440`	`if ( !connectionRO->openCursor( cursorName, query ) )`
`441`	`441`	`{`
`442`		`- // reloading the fields might help next time around`
`443`		`- rewind();`
`444`		`- return false;`
	`442`	`+ //try to re-etablish broken connection`
	`443`	`+ ::PQreset( connectionRO->pgConnection() );`
	`444`	`+ if ( !connectionRO->openCursor( cursorName, query ) )`
	`445`	`+ {`
	`446`	`+ // reloading the fields might help next time around`
	`447`	`+ rewind();`
	`448`	`+ return false;`
	`449`	`+ }`
`445`	`450`	`}`
`446`	`451`	`}`
`447`	`452`	`catch ( PGFieldNotFound )`