You are viewing a plain text version of this content. The canonical link for it is here.

Posted to commits@jena.apache.org by an...@apache.org on 2012/03/28 16:56:58 UTC

svn commit: r1306389 - /incubator/jena/site/trunk/content/jena/documentation/tdb/tdb_transactions.mdtext

Author: andy
Date: Wed Mar 28 14:56:57 2012
New Revision: 1306389

URL: http://svn.apache.org/viewvc?rev=1306389&view=rev
Log:
Better TOC

Modified:
    incubator/jena/site/trunk/content/jena/documentation/tdb/tdb_transactions.mdtext

Modified: incubator/jena/site/trunk/content/jena/documentation/tdb/tdb_transactions.mdtext
URL: http://svn.apache.org/viewvc/incubator/jena/site/trunk/content/jena/documentation/tdb/tdb_transactions.mdtext?rev=1306389&r1=1306388&r2=1306389&view=diff
==============================================================================
--- incubator/jena/site/trunk/content/jena/documentation/tdb/tdb_transactions.mdtext (original)
+++ incubator/jena/site/trunk/content/jena/documentation/tdb/tdb_transactions.mdtext Wed Mar 28 14:56:57 2012
@@ -18,6 +18,8 @@ for reverting a database to 0.8.X.
 -   [Overview](#overview)
 -   [Limitations](#limitations)
 -   [API for Transactions](#api-for-transactions)
+    - [Read transactions](#read-transactions)
+    - [Write transactions](#write-transactions)
 -   [Multi-threaded use](#multi-threaded-use)
 -   [Bulk loading](#bulk-loading)
 -   [Multi JVM](#multi-jvm)
@@ -57,9 +59,9 @@ transactions, the highest
 (some of these limitations may be removed in later versions)
 
 -   Bulk loads: the TDB bulk loader is not transactional
--   [Nested write transactions](http://en.wikipedia.org/wiki/Nested_transaction) are not supported.
--   Single active writer: no multiple concurrent update
-    transactions.
+-   [Nested transactions](http://en.wikipedia.org/wiki/Nested_transaction) are not supported.
+-   There is a single active writer: concurrent write requests
+    are serialized internally.
 -   Some active transaction state is held exclusively in-memory,
     limiting scalability.
 -   Long-running transactions. Read-transactions cause a build-up
@@ -73,7 +75,7 @@ resources.
 
 TDB supports the general Jena API for transactions on RDF datasets 
 (introduced in Jena 2.7.0, ARQ 2.9.0).  Not all storage systems support 
-transactions.
+this style of transactions.
 
 A TDB-backed dataset can be used non-transactionally but once used in a transaction, 
 it should be used transactionally after that.