[mapserver-commits] r12689 - trunk/docs/en/mapfile

[svn at osgeo.org]

Author: tamas
Date: 2011-10-23 08:54:45 -0700 (Sun, 23 Oct 2011)
New Revision: 12689

Modified:
   trunk/docs/en/mapfile/union.txt
Log:
Document the processing options with the union layer (#3900)

Modified: trunk/docs/en/mapfile/union.txt
===================================================================
--- trunk/docs/en/mapfile/union.txt	2011-10-23 15:45:03 UTC (rev 12688)
+++ trunk/docs/en/mapfile/union.txt	2011-10-23 15:54:45 UTC (rev 12689)
@@ -116,6 +116,29 @@
 source layers to the union layer if requested.  (for more information
 on projections in MapServer refer to :ref:`PROJECTION`)
 
+Supported Processing Options
+----------------------------
+
+The following processing options can be used with the union layers:
+
+UNION_STATUS_CHECK (TRUE or FALSE)
+    Controls whether the status of the source layes should be checked and 
+    the invisible layers (STATUS=OFF) should be skipped. Default value is FALSE.
+
+UNION_SCALE_CHECK (TRUE or FALSE)
+    Controls whether the scale range of the source layes should be checked and 
+    the invisible layers (falling outside of the scale range and zoom range) 
+    should be skipped. Default value is TRUE.
+
+UNION_SRCLAYER_CLOSE_CONNECTION
+    Override the connection pool setting of the source layers.
+    By introducing this setting we alter the current behaviour which is equivalent to:
+
+::
+
+    UNION_SRCLAYER_CLOSE_CONNECTION=ALWAYS
+
+
 Examples
 --------