Autodiscover tables for segments w/ complex segment expressions (#13664)

* Support autodiscovering joins for segments that use complex segment expressions.

* Add accessor for ArchiveProcessor::$archiveWriter so new processors can be created in Archivers.

* Add unit and integration tests.

* Make detection logic a bit smarter when handling backticks.

* Add test for parseColumnsFromSqlExpr.

1 files changed, 5 insertions, 0 deletions

diff --git a/core/ArchiveProcessor.php b/core/ArchiveProcessor.php
index 10adb8fdc1..1d83c6e18d 100644
--- a/core/ArchiveProcessor.php
+++ b/core/ArchiveProcessor.php
@@ -632,4 +632,9 @@ class ArchiveProcessor
         $archiveLoader = new ArchiveProcessor\Loader($parameters);
         $archiveLoader->prepareArchive($plugin);
     }
+
+    public function getArchiveWriter()
+    {
+        return $this->archiveWriter;
+    }
 }