[mapserver-users] Still cannot display postGIS layers using
ms4w(MapServer 5.0.2 on WinXP).
Carlos Ruiz
boolean10001 at yahoo.com
Wed Aug 6 10:27:42 EDT 2008
It seems that if you specify an empty filter like FILTER "", Mapserver take it instead to ignore it.
That means Mapserver construct a SQL statement with the WHERE clause empty (without conditionants).
IC Carlos Ruiz
--- On Wed, 8/6/08, kreshna_iceheart at yahoo.com <kreshna_iceheart at yahoo.com> wrote:
From: kreshna_iceheart at yahoo.com <kreshna_iceheart at yahoo.com>
Subject: Re: [mapserver-users] Still cannot display postGIS layers using ms4w(MapServer 5.0.2 on WinXP).
To: "Kusum" <kusum at infobase.in>
Cc: mapserver-users at lists.osgeo.org
Date: Wednesday, August 6, 2008, 4:20 AM
I am an idiot.
Well I don't have a database named postgis on the first place (only
template_postgis), but I tried to apply your first DATA line to my own database
(test_mapserv).
Then I realized: your file don't have FILTER "" clause. At the
same time, someone from postGIS mailing list told me that an empty FILTER clause
will just confuse postGIS. So I remove it from my mapfile and suddenly
everything works!
Thanks,
-Kresh
--- On Wed, 8/6/08, Kusum <kusum at infobase.in> wrote:
> From: Kusum <kusum at infobase.in>
> Subject: Re: [mapserver-users] Still cannot display postGIS layers using
ms4w(MapServer 5.0.2 on WinXP).
> To: kreshna_iceheart at yahoo.com
> Date: Wednesday, August 6, 2008, 3:18 AM
> Try this format :-
> LAYER
> NAME "route"
> STATUS ON
> TYPE line
> CONNECTIONTYPE postgis
> CONNECTION "user=postgres dbname=postgis
> host=localhost port=5432
> password=postgres"
> DATA "the_geom from ind_road"
> #DATA "the_geom from (SELECT the_geom, gid from
> shortest_path_as_geometry('hr_road', 1, 50)) as
> route using unique gid using
> srid=-1"
> #DATA "the_geom from (SELECT the_geom from
> routing_results) as thing using
> unique gid using srid=-1"
> #DATA "the_geom from (SELECT gid, the_geom from
> routing_results) as foo
> using unique gid using srid=-1"
>
> TEMPLATE "t"
> PROJECTION
> "proj=latlong"
> "ellps=WGS84"
> "datum=WGS84"
> END
>
> --------------------------------------------------
> From: <kreshna_iceheart at yahoo.com>
> Sent: Wednesday, August 06, 2008 12:40 PM
> To: <mapserver-users at lists.osgeo.org>
> Subject: [mapserver-users] Still cannot display postGIS
> layers using
> ms4w(MapServer 5.0.2 on WinXP).
>
> > Help. Somebody please help. Somebody. Anybody. :-(
> >
> > I am using postgreSQL 8.2.5 for Windows with postGIS.
> The database was
> > installed using Windows .msi installation package. I
> am also using ms4w
> > 2.2.7 that comes with MapServer 5.0.2. All installed
> on Windows XP Service
> > Pack 2.
> >
> > The MapServer does support postGIS. When I executed
> mapserv -v, I got the
> > following:
> > MapServer version 5.0.2 OUTPUT=GIF OUTPUT=PNG
> OUTPUT=JPEG OUTPUT=WBMP
> > OUTPUT=PDF OUTPUT=SWF OUTPUT=SVG SUPPORTS=PROJ
> SUPPORTS=AGG
> > SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER
> SUPPORTS=WMS_CLIENT
> > SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT
> SUPPORTS=WCS_SERVER
> > SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS
> SUPPORTS=GEOS
> > INPUT=JPEG INPUT=POSTGIS INPUT=OGR INPUT=GDAL
> INPUT=SHAPEFILE
> >
> > In the postgreSQL database, I have created a database
> named test_mapserv.
> > I also created a schema named rencana, and a table
> named kawasanbencana.
> > The name of the geometry column is the_geom.
> > I have created a spatial index (kawasanbencanaspix) on
> the geometry
> > column. I also use lowercase to write the
> 'from' statement.
> >
> > The problem is: MapServer always gives the
> "..Query error. Error executing
> > POSTGIS DECLARE.." error message, no matter what
> I do. And I have tried
> > everything ad nauseam.
> >
> > I have tried specifying the DATA line without USING
> UNIQUE ... USING SRID
> > line. I have tried specifying the DATA line with USING
> UNIQUE ...USING
> > SRID. I have tried using double apostrophe (")
> and single apostrophe (').
> > It doesn't matter. Everything I have tried has
> failed, and I still get the
> > error message no matter what I did.
> >
> > My mapfiles are attached in this mail. Each reflect my
> futile attempt, and
> > all of them generated the error message.
> >
> >
> > My first attempt:
> > =================
> >
> > This is my first attempt. I have both the mapfile and
> the error message
> > attached on this mail.
> > CONNECTIONTYPE postgis
> > CONNECTION 'host=localhost user=rtrw
> password=123456 port=5432
> > dbname=test_mapserver'
> > DATA 'the_geom from rencana.kawasanbencana'
> >
> > And I got the following error message:
> > msDrawMap(): Image handling error. Failed to draw
> layer named
> > 'kawasanbencana'. prepare_database(): Query
> error. Error executing POSTGIS
> > DECLARE (the actual query) statement: 'DECLARE
> mycursor BINARY CURSOR FOR
> > SELECT
> asbinary(force_collection(force_2d(the_geom)),'NDR'),gid::text
> from
> > rencana.kawasanbencana WHERE () and (the_geom
> && setSRID(
> > 'BOX3D(528635.525378392 9074209,609092.162121608
> >
>
9134520)'::BOX3D,find_srid('','rencana.kawasanbencana','the_geom')
> ))'
> > Postgresql reports the error as 'ERROR: syntax
> error at or near ")" LINE
> > 1: ...DR'),gid::text from rencana.kawasanbencana
> WHERE () and (the... ^ '
> > More Help: Error with POSTGIS data variable. You
> specified 'check your
> > .map file'. Standard ways of specifiying are : (1)
> 'geometry_column from
> > geometry_table' (2) 'geometry_column from (sub
> query) as foo using unique
> > column name using SRID=srid#' Make sure you put in
> the 'using unique
> > column name' and 'using SRID=#' clauses
> in. For more help, please see
> > http://postgis.refractions.net/documentation/
> Mappostgis.c - version of
> > Jan 23/2004.
> >
> >
> > My second attempt:
> > ==================
> >
> > I tried adding USING UNIQUE to my DATA line. There is
> something odd with
> > my spatial table though: whenever I view the data
> contents with pgAdmin, I
> > can always see the oid column. However, I cannot find
> the oid column when
> > viewing the table's column definition. I attached
> the screenshots
> > accordingly. The question is: does my table have oid
> column or not? And
> > does it have something to do with the error?
> >
> > Nonethless, here's my lines:
> > CONNECTIONTYPE postgis
> > CONNECTION 'host=localhost user=rtrw
> password=123456 port=5432
> > dbname=test_mapserver'
> > DATA 'the_geom from rencana.kawasanbencana
> using unique oid'
> >
> >
> > And I still get the same error message as above. The
> difference is that
> > the error message now says 'oid' instead of
> 'gid'. For instance,
> > "(the_geom)),'NDR'),gid" becomes
> "(the_geom)),'NDR'),oid", but everything
> > else remains the same.
> >
> >
> > My third attempt:
> > =================
> >
> > Like I said in my second attempt, I'm not sure
> whether my table has oid
> > column or not. Thus, in my third attempt I used the
> gid column instead,
> > especially since the gid column is my primary key
> column anyway. This is
> > my lines:
> > CONNECTIONTYPE postgis
> > CONNECTION 'host=localhost user=rtrw
> password=123456 port=5432
> > dbname=test_mapserver'
> > DATA 'the_geom from rencana.kawasanbencana
> using unique gid'
> >
> > And I got exactly the same error message as my first
> attempt.
> >
> >
> > My fourth attempt:
> > ==================
> >
> > In my fourth attempt, I used the gid column for my
> unique id, and I am
> > using SRID=1. Here is the lines:
> > CONNECTIONTYPE postgis
> > CONNECTION 'host=localhost user=rtrw
> password=123456 port=5432
> > dbname=test_mapserver'
> > DATA 'the_geom from rencana.kawasanbencana
> using unique gid using
> > SRID=1'
> >
> > Well I still got the error message. This time, the
> error message is
> > slightly different. Instead of getting
> "::BOX3D,find_srid", I got
> > "::BOX3D,1".
> >
> > Here is the complete error message:
> > msDrawMap(): Image handling error. Failed to draw
> layer named
> > 'kawasanbencana'. prepare_database(): Query
> error. Error executing POSTGIS
> > DECLARE (the actual query) statement: 'DECLARE
> mycursor BINARY CURSOR FOR
> > SELECT
> asbinary(force_collection(force_2d(the_geom)),'NDR'),gid::text
> from
> > rencana.kawasanbencana WHERE () and (the_geom
> && setSRID(
> > 'BOX3D(528635.525378392 9074209,609092.162121608
> 9134520)'::BOX3D,1) )'
> > Postgresql reports the error as 'ERROR: syntax
> error at or near ")" LINE
> > 1: ...DR'),gid::text from rencana.kawasanbencana
> WHERE () and (the... ^ '
> > More Help: Error with POSTGIS data variable. You
> specified 'check your
> > .map file'. Standard ways of specifiying are : (1)
> 'geometry_column from
> > geometry_table' (2) 'geometry_column from (sub
> query) as foo using unique
> > column name using SRID=srid#' Make sure you put in
> the 'using unique
> > column name' and 'using SRID=#' clauses
> in. For more help, please see
> > http://postgis.refractions.net/documentation/
> > Mappostgis.c - version of Jan 23/2004.
> >
> >
> > My fifth attempt:
> > =================
> >
> > Now I had been pretty much desperate, I just wrote
> using SRID=#, closed my
> > eyes, and hoped for the best. Here's the lines:
> > CONNECTIONTYPE postgis
> > CONNECTION 'host=localhost user=rtrw
> password=123456 port=5432
> > dbname=test_mapserver'
> > DATA 'the_geom from rencana.kawasanbencana
> using unique gid using
> > SRID=#'
> >
> > I still get an error message. This time, the error
> message is different
> > altogether. Here's the message:
> > msDrawMap(): Image handling error. Failed to draw
> layer named
> > 'kawasanbencana'. msPOSTGISLayerParseData():
> Query error. Error parsing
> > POSTGIS data variable: You specified 'using
> SRID=#' but didnt have any
> > numbers! More Help: Error with POSTGIS data variable.
> You specified
> > 'the_geom from rencana.kawasanbencana using unique
> gid using SRID=#'.
> > Standard ways of specifiying are : (1)
> 'geometry_column from
> > geometry_table' (2) 'geometry_column from (sub
> query) as foo using unique
> > column name using SRID=srid#' Make sure you put in
> the 'using unique
> > column name' and 'using SRID=#' clauses
> in. For more help, please see
> > http://postgis.refractions.net/documentation/
> Mappostgis.c - version of
> > Jan 23/2004.
> >
> >
> > I'm pretty much desperate. Could somebody please
> tell what's wrong on my
> > mapfile? Or maybe ms4w just cannot display postGIS
> data? Do I need to
> > install postGIS and MapServer on Linux, in order to
> get them work
> > together? Please help. :-(
> >
> >
> > Thanks,
> > -Kresh
> >
> >
> >
> >
>
>
>
> > _______________________________________________
> > mapserver-users mailing list
> > mapserver-users at lists.osgeo.org
> >
> http://lists.osgeo.org/mailman/listinfo/mapserver-users
> >
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