The main feature of this pull request is a new callback that's added to the query class that is called when a batch has completed execution and retrieval of results. This callback will send an event to the extension with the batch summary information. After that, the extension can submit subset requests for the resultsets of the batch.
Other smaller changes in this pull request:
Refactor to assign a batch a id when its created instead of when returning the list of batch summaries
Passing the SelectionData around instead of extracting the values for it
Moving creation of BatchSummary into the Batch class
Retrieval of results is now permitted even if the entire query has not completed, as long as the batch requested has completed.
Also note, this does not break the protocol. It adds a new event that a queryRunner can listen to, but it doesn't require it to be listened to.
* Refactor to remove SectionData class in favor of BufferRange
* Adding callback for batch completion that will let the extension know that a batch has completed execution
* Refactoring to make progressive results work as per async query execution
* Allowing retrieval of batch results while query is in progress
* reverting global.json, whoops
* Adding a few missing comments, and fixing a couple code style bugs
* Using SelectionData everywhere again
* One more missing comment
* Make save results asynchronous
* Prevent write share of file
* Lock objects in stages
* Create Save result objects
* refactor and write rows in batches
* CHange batchSize from test value
* Remove await in handler
* Removing the file reader as a member of the resultset
* Change Dispose to wait for save
* Change concurrentBag
* PascalCase variables
* Modify function signature and tests
* Safe file methods
* refactor ResultSets to Ilist and remove ToList
* Change dictionary key and prevent add to saveTasks during dispose
* Simplify row concatenation
* Fix prevent add
* Fix prevent add
* Add methods to expose saveTasks and isBeingDisposed
* Code changes to save results as csv
* changes to save resultset as csv
* removed csvHelper
* Retrieve right resultSet after batch execution]
* code clean up
* encode column names and use string.Join
* code review changes - property fix and rowBuilder removal
* changes to fix execution tests
* Code clean up
* Code clean up
* Test save as CSV
* Fix tests for Mac/Linux
* Add doc comment
* Add doc comments
* Delete file if exception occurs
