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commit d7c76b624dd525861bc1e89c757281459e557c02
Author: Bas Couwenberg <sebas...@xs4all.nl>
Date:   Sat Feb 8 05:50:52 2014 +0100

    Add patch to fix postgis topology availability detection query.
---
 debian/changelog                                        |  1 +
 ...-query-to-detect-postgis-topology-availability.patch | 17 +++++++++++++++++
 debian/patches/series                                   |  1 +
 3 files changed, 19 insertions(+)

diff --git a/debian/changelog b/debian/changelog
index f9c8abc..3ed18f6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -12,6 +12,7 @@ qgis (2.0.1-2) UNRELEASED; urgency=low
   * Additional checks in qgis-providers-common.postinst 
   * Add patch to fix mis-detection of PostGIS table types.
   * Add patch to not look for topology layers without topology support.
+  * Add patch to fix postgis topology availability detection query.
 
  -- Bas Couwenberg <sebas...@xs4all.nl>  Fri, 31 Jan 2014 19:42:03 +0100
 
diff --git 
a/debian/patches/fix-query-to-detect-postgis-topology-availability.patch 
b/debian/patches/fix-query-to-detect-postgis-topology-availability.patch
new file mode 100644
index 0000000..4533e1f
--- /dev/null
+++ b/debian/patches/fix-query-to-detect-postgis-topology-availability.patch
@@ -0,0 +1,17 @@
+From: Sandro Santilli <s...@keybit.net>
+Subject: Fix query to detect postgis topology availability.
+Origin: 
https://github.com/qgis/QGIS/commit/f8028087ad533307774c79afceb3580d27466664
+Bug: http://hub.qgis.org/issues/9453
+--- a/src/providers/postgres/qgspostgresconn.cpp
++++ b/src/providers/postgres/qgspostgresconn.cpp
+@@ -712,8 +712,8 @@ QString QgsPostgresConn::postgisVersion()
+   mTopologyAvailable = false;
+   if ( mPostgisVersionMajor > 1 )
+   {
+-    QgsPostgresResult result = PQexec( "SELECT count(c.oid) FROM pg_class AS 
c JOIN pg_namespace AS n ON c.relnamespace=n.oid WHERE n.nspname='topology' AND 
c.relname='topology'" );
+-    if ( result.PQntuples() >= 1 )
++    QgsPostgresResult result = PQexec( "SELECT EXISTS ( SELECT c.oid FROM 
pg_class AS c JOIN pg_namespace AS n ON c.relnamespace=n.oid WHERE 
n.nspname='topology' AND c.relname='topology' )" );
++    if ( result.PQntuples() >= 1 && result.PQgetvalue(0, 0) == "t" )
+     {
+       mTopologyAvailable = true;
+     }
diff --git a/debian/patches/series b/debian/patches/series
index 2f6dcf2..82af183 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -29,3 +29,4 @@ use-local-icon.patch
 fix-qreal-vs-double.patch
 mis-detection-of-PostGIS-table-type.patch
 postgres-provider-topology-support.patch
+fix-query-to-detect-postgis-topology-availability.patch

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