Unexpected WFS GetFeature results

Yewondwossen Assefa assefa at DMSOLUTIONS.CA
Thu Apr 14 11:54:59 EDT 2005


Tom,

  I have rechecked the code and when not using SQL statements, the
filter encoding colde would create in your case :
  <PropertyIsLike wildCard="*" singleChar="." escape="!">
     <PropertyName>keywords</PropertyName>
     <Literal>benthic</Literal>
  </PropertyIsLike> :
   - a class item called "keywords"
   - expression /benthic/

  The expression built like that would match your field value defined
like  "cabin,benthic,canada,biomonitoring,sites,site,sample,".
  The expression generation could be thighten up to be /^benthic$/. If
that is the inteded interpretation, please file a speperate bug on this
and assigh it to me.

  Thanks for testing. Bug 1308 is closed.

Later,

Kralidis,Tom [Burlington] wrote:
> Close out on this thread:
>
> It seems that, before the changes to mapogcfilter.c, the like filter
> evaluated directives like:
>
> like 'benthic'
>
> To:
>
> Like '%benthic%'
>
> ...whereas this was tightened up in the changes.
>
> So my original test case with the GetFeature filter was getting results
> back when it shouldn't have, i.e. now MapServer only applies wildcards
> around the search term if put forth by the client.
>
> Thanks Assefa!
>
> ..Tom
>
>
>
>>-----Original Message-----
>>From: UMN MapServer Users List
>>[mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of
>>Yewondwossen Assefa
>>Sent: Wednesday, 06 April, 2005 13:16
>>To: MAPSERVER-USERS at LISTS.UMN.EDU
>>Subject: Re: [UMN_MAPSERVER-USERS] Unexpected WFS GetFeature results
>>
>>
>>I will look today into it and provide you with the exact SQL
>>statment created if I do not see any thing obvious.
>>
>>Later,
>>
>>
>>Kralidis,Tom [Burlington] wrote:
>>
>>>Assefa,
>>>
>>>I tested this scenario with CVS 20050328 (the day before
>>
>>you committed
>>
>>>to mapogcfilter.c and mapogcfilter.h), and everything works fine.
>>>
>>>So the problem is somewhere in those changes.
>>>
>>>Here's the actual OGC filter:
>>>
>>><Filter>
>>> <And>
>>>  <BBOX>
>>>   <PropertyName>NAME</PropertyName>
>>>    <Box srsName="EPSG:4326">
>>>     <coordinates>-141.84,21.599999999999994
>>
>>-56.16,74.16</coordinates>
>>
>>>    </Box>
>>>  </BBOX>
>>>  <Or>
>>>   <Or>
>>>    <PropertyIsLike wildCard="*" singleChar="." escape="!">
>>>     <PropertyName>title</PropertyName>
>>>     <Literal>benthic</Literal>
>>>    </PropertyIsLike>
>>>    <PropertyIsLike wildCard="*" singleChar="." escape="!">
>>>     <PropertyName>abstract</PropertyName>
>>>     <Literal>benthic</Literal>
>>>    </PropertyIsLike>
>>>   </Or>
>>>   <PropertyIsLike wildCard="*" singleChar="." escape="!">
>>>    <PropertyName>keywords</PropertyName>
>>>    <Literal>benthic</Literal>
>>>   </PropertyIsLike>
>>>  </Or>
>>> </And>
>>></Filter>
>>>
>>>..Tom
>>>
>>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: UMN MapServer Users List
>>
>>[mailto:MAPSERVER-USERS at LISTS.UMN.EDU]
>>
>>>>On Behalf Of Yewondwossen Assefa
>>>>Sent: Wednesday, 06 April, 2005 13:03
>>>>To: MAPSERVER-USERS at LISTS.UMN.EDU
>>>>Subject: Re: [UMN_MAPSERVER-USERS] Unexpected WFS GetFeature results
>>>>
>>>>
>>>>Tom,
>>>>
>>>> I did make some changes recently to the way filters were
>>
>>handled for
>>
>>>>postgis layers (Bug
>>>>http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=1292).
>>>>
>>>> It's probably related to thoses changes. Is it easy for
>>
>>you to test
>>
>>>>it against 4.4.x releases ? If you can test and It works I
>>
>>will start
>>
>>>>looking into the code to see what the problem is.
>>>>
>>>>Later,
>>>>
>>>>
>>>>Kralidis,Tom [Burlington] wrote:
>>>>
>>>>
>>>>>Hi,
>>>>>
>>>>>(MapServer CVS, FC2, latest stable supporting libs).
>>>>>
>>>>>I have a WFS instance running against a PostGIS table, and when I
>>>>>invoke a Filter'd GetFeature operation (bbox AND a nested OR), I
>>>>>expect one result to be returned (only one record in the DB
>>>>
>>>>satisfies
>>>>
>>>>
>>>>>this request).
>>>>>
>>>>>I've attached a sample HTML form page to correctly invoke
>>>>
>>>>the request.
>>>>
>>>>
>>>>>However, I receive all records back in the DB.
>>>>>
>>>>>Any idea what's going on here?  FYI, here's my DATA string in the
>>>>>LAYER
>>>>>object:
>>>>>
>>>>> DATA "the_geom from (select service_endpoints.organization as
>>>>>organization,service_endpoints.endpoint_getresource as
>>>>>endpoint_getresource,service_endpoints.service_type as
>>>>>service_type,service_endpoints.service_version as
>>>>>service_version,service_resources.the_geom as
>>>>>the_geom,service_resources.resource_id as
>>>>>resource_id,service_resources.service_id as
>>>>>service_id,service_resources.name as
>>>>
>>>>name,service_resources.title as
>>>>
>>>>
>>>>>title,service_resources.abstract as
>>>>>abstract,service_resources.keywords
>>>>>as keywords,service_resources.dataurl as
>>>>>dataurl,service_resources.metadataurl as
>>>>>metadataurl,service_resources.legendurl as
>>>>>legendurl,service_resources.scale_min as
>>>>>scale_min,service_resources.scale_max
>>>>>as scale_max,service_resources.srs as
>>>>
>>>>srs,service_endpoints.format_list
>>>>
>>>>
>>>>>as format_list,service_resources.style_list as
>>>>>style_list,service_resources.time_extent as
>>>>>time_extent,service_resources.queryable as queryable from
>>>>>service_resources inner join service_endpoints on
>>>>>service_endpoints.service_id =
>>>>
>>>>service_resources.service_id) as t using
>>>>
>>>>
>>>>>unique resource_id"
>>>>>
>>>>>Thanks
>>>>>
>>>>>..Tom
>>>>>
>>>>>
>>>>>
>>>>
>>>>------------------------------------------------------------
>>
>>----------
>>
>>>>>--
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>--
>>>>----------------------------------------------------------------
>>>>Assefa Yewondwossen
>>>>Software Analyst
>>>>
>>>>Email: assefa at dmsolutions.ca
>>>>http://www.dmsolutions.ca/
>>>>
>>>>Phone: (613) 565-5056 (ext 14)
>>>>Fax:   (613) 565-0925
>>>>----------------------------------------------------------------
>>>>
>>>
>>>
>>>
>>--
>>----------------------------------------------------------------
>>Assefa Yewondwossen
>>Software Analyst
>>
>>Email: assefa at dmsolutions.ca
>>http://www.dmsolutions.ca/
>>
>>Phone: (613) 565-5056 (ext 14)
>>Fax:   (613) 565-0925
>>----------------------------------------------------------------
>>
>
>
>

--
----------------------------------------------------------------
Assefa Yewondwossen
Software Analyst

Email: assefa at dmsolutions.ca
http://www.dmsolutions.ca/

Phone: (613) 565-5056 (ext 14)
Fax:   (613) 565-0925
----------------------------------------------------------------



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