Made pipeline preprocessing synchronous.

Instead of having the asynchronous preprocessor concept with different
pipelines for new/modify/delete we have a single pipeline with
synchronous preprocessors that act upon new/modify/delete.
This keeps the code simpler due to lack of asynchronity and keeps the
new/modify/delete operations together (which at least for the indexing
makes a lot of sense).
Not supporting asynchronity is ok because the tasks done in
preprocessing are not cpu intensive (if they were we had a problem
since they are directly involved in the round-trip time), and the main
cost comes from i/o, meaning we don't gain much by doing multithreading.
Costly tasks (such as full-text indexing) should rather be implemented
as post-processing, since that doesn't increase the round-trip time directly,
and eventually consistent is typically good enough for that.

1 files changed, 1 insertions, 1 deletions

diff --git a/common/domain/mail.h b/common/domain/mail.h
index b58ce44..38f1d03 100644
--- a/common/domain/mail.h
+++ b/common/domain/mail.h
@@ -51,7 +51,7 @@ public:
      * An empty result set indicates that a full scan is required.
      */
     static ResultSet queryIndexes(const Akonadi2::Query &query, const QByteArray &resourceInstanceIdentifier, QSet<QByteArray> &appliedFilters, Akonadi2::Storage::Transaction &transaction);
-    static void index(const Mail &type, Akonadi2::Storage::Transaction &transaction);
+    static void index(const QByteArray &identifier, const BufferAdaptor &bufferAdaptor, Akonadi2::Storage::Transaction &transaction);
     static QSharedPointer<ReadPropertyMapper<Buffer> > initializeReadPropertyMapper();
     static QSharedPointer<WritePropertyMapper<BufferBuilder> > initializeWritePropertyMapper();
 };