[mapserver-users] How to use 01 connection for all layers in map file

[Jelmer Baas]

Don't you mean that you don't want your Oracle connection opened and
closed for each layer? If that's the case, you can use the setting 
PROCESSING "CLOSE_CONNECTION=DEFER"

 
 
in your Layer.
 
See http://ms.gis.umn.edu/docs/reference/mapfile/layer
<http://ms.gis.umn.edu/docs/reference/mapfile/layer>  or
http://mapserver.org/input/vector/ogr.html
<http://mapserver.org/input/vector/ogr.html> 
 
Regards,
Jelmer

 

________________________________

	From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Mr. Bic
Phuong
	Sent: donderdag 6 augustus 2009 11:32
	To: Pavel Iacovlev
	Cc: mapserver-users at lists.osgeo.org
	Subject: [mapserver-users] How to use 01 connection for all
layers in map file
	
	

Your reply is really good news,

Will you please to tell me details on details how can I do like you with
a map file which has more than 17 connection now?

I do not understand yet clearly how to use "single" MapServer layer for
all?

Thanks so much and I hope you can help me more!



--- On Thu, 8/6/09, Pavel Iacovlev <iacovlev.pavel at gmail.com> wrote:

From: Pavel Iacovlev <iacovlev.pavel at gmail.com>
Subject: Re: [mapserver-users] How to use 01 connection for all layers
in map file
To: "Mr. Bic Phuong" <bicphuongonline at yahoo.com>
Date: Thursday, August 6, 2009, 3:16 PM

Hope I get your question right.

We have around 32 layers in one of the project, the approach is rather
simple, you just use a "single" Mapserver layer so there is always 1
request to Mapserver from OpenLayers. The request layer is the
combination of all your layers, the overlaying is made server side.

Details:
1. We have a custom "layer switcher" that user selects what layers he
wants to see and this data is saved, in a php session for example.
2. Then the user requests a map from a PHPMapscript(mapserver) server,
using php you fetch all the layers selected by the user previously
3. Dispatch the result

	


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