Thanks for laying that out Carlo.
In the wms doc noticed a small typo in the last table in the DescribeLayer
section, both formats are listed as "JSONP" ,i believe the first one should
be just JSON?
Also a question, does the default callback function name "paddingOutput"
come from anywhere? Like is it a convention? The wikipedia page uses
"parseResponse" as an example which sort of makes sense.
On Wed, Sep 5, 2012 at 2:25 PM, Carlo Cancellieri
<ccancelli...@hotmail.com>wrote:
> Hi Justing,
> response inline:
>
> ------------------------------
>
> Date: Wed, 5 Sep 2012 12:35:46 -0400
> Subject: Re: [Geoserver-devel] GSIP 79 - Json support and WFS and WMS
> ExceptionHandlers
> From: jdeol...@opengeo.org
> To: ccancelli...@hotmail.com
> CC: geoserver-devel@lists.sourceforge.net
>
>
> Thanks Carlo.
>
> It seems thsi proposal encompasses GEOS-5246 as well, be nice is there was
> some links there and also a bit of a description in the proposal itself
> rather than having to go into the issues and try to determine what the high
> level changes are.
>
> OK, i'll do it.
>
>
> That said, i have questions about mime types used. I see both
> application/json and text/javascript used for both output format and
> exceptions. Can you provide a bit of clarity there? Is text/javascript used
> to suppor the jsonp callback? In conjunction with the "callback" format
> option?
>
> Let's say f.e. in a request like this:
>
> http://localhost:8080/geoserver/wms?
> &INFO_FORMAT=text/javascript
> &REQUEST=GetFeatureInfo
> &EXCEPTIONS=application/vnd.ogc.se_xml
> &SERVICE=WMS
> &INFO_FORMAT=text/javascript
> &VERSION=1.1.1
> &WIDTH=970&HEIGHT=485&X=486&Y=165&BBOX=-180,-90,180,90
> &LAYERS=COUNTRYPROFILES:grp_administrative_map
> &QUERY_LAYERS=COUNTRYPROFILES:grp_administrative_map
> &TYPENAME=COUNTRYPROFILES:grp_administrative_map
> &format_options=callback:getLayerFeatures
> <http://localhost:8080/geoserver/wms?&INFO_FORMAT=text/javascript&REQUEST=GetFeatureInfo&EXCEPTIONS=application/vnd.ogc.se_xml&SERVICE=WMS&INFO_FORMAT=text/javascript&VERSION=1.1.1&WIDTH=970&HEIGHT=485&X=486&Y=165&BBOX=-180,-90,180,90&LAYERS=COUNTRYPROFILES:grp_administrative_map&QUERY_LAYERS=COUNTRYPROFILES:grp_administrative_map&TYPENAME=COUNTRYPROFILES:grp_administrative_map&format_options=callback:getLayerFeatures>
>
> You can specify the desired 'output_format':
>
> &INFO_FORMAT=text/javascript
>
> and also the desired exception format:
>
> &EXCEPTIONS=application/vnd.ogc.se_xml
>
> In this case you'll get:
> case 1:
> - the response in a jsonP format with the callback function called
> getLayerFeatures
> case 2:
> - the exception in an xml format (as default)
>
> Now if you change that request in:
>
> http://localhost:8080/geoserver/wms?
> &INFO_FORMAT=text/javascript
> &REQUEST=GetFeatureInfo
> &EXCEPTIONS=text/javascript
> &SERVICE=WMS
> &INFO_FORMAT=text/javascript
> &VERSION=1.1.1
> &WIDTH=970&HEIGHT=485&X=486&Y=165&BBOX=-180,-90,180,90
> &LAYERS=COUNTRYPROFILES:grp_administrative_map
> &QUERY_LAYERS=COUNTRYPROFILES:grp_administrative_map
> &TYPENAME=COUNTRYPROFILES:grp_administrative_map
> &format_options=callback:getLayerFeatures
> <http://localhost:8080/geoserver/wms?&INFO_FORMAT=text/javascript&REQUEST=GetFeatureInfo&EXCEPTIONS=text/javascript&SERVICE=WMS&INFO_FORMAT=text/javascript&VERSION=1.1.1&WIDTH=970&HEIGHT=485&X=486&Y=165&BBOX=-180,-90,180,90&LAYERS=COUNTRYPROFILES:grp_administrative_map&QUERY_LAYERS=COUNTRYPROFILES:grp_administrative_map&TYPENAME=COUNTRYPROFILES:grp_administrative_map&format_options=callback:getLayerFeatures>
>
> You'll get:
> case 1:
> - the response in a jsonP format with the callback function called
> getLayerFeatures
> case 2:
> - the exception in a jsonP format with the callback function called
> getLayerFeatures
>
> NOTE:
> 1. I don't added a specific format_option for exception callback right
> now, do we really need one?
> 2. The format_options callback parameter is NOT mandatory in that case
> (JSONP for response or exception) the default one is used paddingOutput
> (see JSONType).
>
> Same things can be obtained when you use application/json.
> In that case you are simply asking for a json without the callback
> function (which is ignored if specified).
>
> Json and JsonP
> http://en.wikipedia.org/wiki/JSONP
>
> Take also a look to examples here:
> http://docs.geoserver.org/latest/en/user/services/wms/reference.html
>
> Hope that this answers your questions.
>
> Cheers,
> Carlo
>
>
> Thanks.
>
> -Justin
>
> On Wed, Sep 5, 2012 at 12:16 PM, Carlo Cancellieri <
> ccancelli...@hotmail.com> wrote:
>
> Hi all,
> the GSIP 79 (about Json ExceptionHandlers) is here:
> http://geoserver.org/pages/viewpage.action?pageId=49938445
> It is already committed on the master branch and it would be nice to
> discuss about its backport to the stable release 2.2.2.
>
> Cheers,
> Carlo
>
> ------------------------------
> Date: Mon, 3 Sep 2012 11:31:21 -0500
> From: j...@codehaus.org
> To: ccancelli...@hotmail.com
> Subject: [jira] (GEOS-5247) Json[p] WFS and WMS exceptionHandler
>
> Justin
> Deoliveira<https://jira.codehaus.org/secure/ViewProfile.jspa?name=jdeolive>commented
> on [image:
> Improvement] GEOS-5247 <https://jira.codehaus.org/browse/GEOS-5247>
> *Json[p] WFS and WMS
> exceptionHandler*<https://jira.codehaus.org/browse/GEOS-5247>
>
> Any chance we can get a short GSIP before the work is backported. Maybe
> at least just summarizing all the info placed into the various tickets. It
> would be nice to get some more javascript developers eyes on this on before
> it's set in stone on the stable branch.
> This message is automatically generated by JIRA.
> If you think it was sent incorrectly, please contact your JIRA
> administrators<https://jira.codehaus.org/secure/ContactAdministrators%21default.jspa>
> .
> For more information on JIRA, see: http://www.atlassian.com/software/jira
>
>
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>
>
> --
> Justin Deoliveira
> OpenGeo - http://opengeo.org
> Enterprise support for open source geospatial.
>
>
>
--
Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.
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