Sort DocumentCollection in LotusScript

When using NotesQueryResultsProcessor

I get the error MyTempView not declared Set myview = qrp.executeToView(“MyTempView”, 2)

What am I missing?

Sorting collections is not in the ideology of the platform, and it will be long anyway. I am surprised, why to use crutches if one can prepare views and quickly take correctly sorted data from there? With proper design, there will be few such views.

What about creating the QueryResultsProcessor on a local database (e.g. names.nsf), feeding it with remote document collections or view entry collections and then processing the result of the executeToJSON call? Haven’t tested it, but I would think that the QRP input set can be remote. It’s just the QueryResultsProcessor instance that needs to be created on a local database.

But for the simple task of sorting a DocumentCollection, I would use the intersect/maintainOrder solution, at least when I had a view that contains the required sorting.

Karsten Lehmann, Mindoo GmbH

@Lothar - (Notes)QueryResultsProcessor does not work client/server. You must run it on a local database and execute the containing code using RunOnServer. QRP provides both JSON and view output, where JSON is a stream of sorted results.

Hi Thomas,

I'm sorry to again disagree to the "Shipped" status:

So I tried how far I can get here, but had to find that we still cannot make use of that class on a server-based database:

while I can get it to work on my local machine, as soon as my test agent tries to execute

>> Set qrp = thisDb.CreateQueryResultsProcessor()

I get a message telling me that this method is unavailable.

Both client and server are 12.0.1, ODS is 53 (on server) and 52 (local replica).

Finally let me add: while I personally never really had the need to sort my docCollections, others apparently are missing that feature. But if I had, using a qrp at least currently wouldn't get me a "sorted" in-memory docCollection which then by looping it would give me my docs in the expected "order".

Regards, Lothar (Lothar.Mueller@edcom.de)

This can be done with the new QueryResultProcessor class in V12 , for details see this: https://help.hcltechsw.com/dom_designer/12.0.0/basic/H_NOTESQUERYRESULTSPROCESSOR_CLASS.html

If I recall right, techtarget solution is limited to dc's of same database. As it is just one line of code to fix this (Set db = s.currentdatabase versus set db = dc.'WhatEverItTakesHere' ) this should be corrected when implementing.

In plan for v12

Use case: User clicks a "report" button and enters a date range and selects customer number, part number or location.  A db.search returns the matching documents in a collection.  The desired field values are then written to Excel for display.  It looks clunky to use Excel's sort after the rows are written. 

The SearchDomino solution works  fine.  Nevertheless, it would be nice if it was built in.

Basic Document Collection Sort function:  see https://searchdomino.techtarget.com/tip/LotusScript-sorts-a-Lotus-Notes-document-collection

Please look at maintainOrder in 10.0.1 on (Notes)ViewEntryCollection intersect and subtract functions.  If you intersect your NotesDocumentCollection with a sorted NotesViewEntryCollection, you get sorted results.

We'll do more, but I wanted to make sure people knew about it.  It's available in 10.0.1.

https://www.ibm.com/support/knowledgecenter/SSVRGU_10.0.1/basic/H_INTERSECT_METHOD_VEC_JAVA.html
https://www.ibm.com/support/knowledgecenter/SSVRGU_10.0.1/basic/H_SUBTRACT_METHOD_VEC_JAVA.html

I have been developing under Lotus since 2001 fulltime, and never needed to sort collections.
The need to sort collections usually speaks of improperly projected applications.

Domino 10.0.1 provides a solution with ViewEntryCollection.intersect(DocumentCollection dc, boolean maintainOrder);

That way, you can use a sorted view (or sort it in code with View.resortView(String column)), get a ViewEntryCollection via View.getAllEntries() and reduce it to only contain entries of your document collection.

Please add this.  It's somewhat embarrassing that we don't have a sort method.  I will add to Ulf's suggestion, by including another argument:

NotesDocumentCollection.Sort(FieldNameArray, Ascending or Descending)

Testing DQL via node.js, I also realized that we need sorting for DQL

+1 for "add sorting to DQL"

Or add sorting to DQL.