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[Gwt-openlayers-users] WFS Operations
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From: Edwin C. <com...@gm...> - 2009-08-09 22:58:45
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Hi Cameron, Like the WMSGetFeatureInfo, the WFS support is also new in OpenLayers 2.8. The WFS support is high on my list to get working with GWT-OpenLayers, but currently it is not in GWT-OL. I am just reworking the GWT-OL code and showcase a little bit (removing warnings and deprecated AddClickListener stuff), but after that I think the WMSGetFeatureInfo Control and the WFS layer will be my primary goals. Having good WMS/WFS support is first on the list, and getting a good Google Maps example a good second. Would be nice to have you as beta tester of the WMSGetFeatureInfo and WFS support, when I get to it. I hope so this week. OpenLayers 2.8 does WFS requests via a cgi proxy to get past the cross-domain restrictions. As a user you should not concern yourself with that to much, but for your information... Greetings, Edwin ---------- Forwarded message ---------- From: Cameron Hunt <CH...@ci...> Date: 2009/8/10 Subject: RE: [Gwt-openlayers-users] Some general beginners questions To: Edwin Commandeur <com...@gm...> Thank you Edwin, I am using Geoserver so I will look into the WFS operations. Should I be able to perform these operations easily enough using GWT-Openlayers? Thanks. Regards Cameron ------------------------------ *From:* Edwin Commandeur [mailto:com...@gm...] *Sent:* Monday, 10 August 2009 07:20 AM *To:* AbdElhadi *Cc:* Cameron Hunt; gwt...@li... *Subject:* Re: [Gwt-openlayers-users] Some general beginners questions Hi Cameron, *GetFeatureInfo*: Abdelhadi is right about the feature info on a WMS. You would need a WMS server that supports GetFeatureInfo. GeoServer supports GetFeatureInfo requests for example, as does MapServer. Be careful: the GetFeatureInfo response has not been standardized by the OGC. Since OpenLayers 2.8, OpenLayers has WMSGetFeatureInfo control that abstracts over several different GetFeatureInfo response formats. I will add support for that control to GWT-OL. *Thematic mapping*: That is something I think you would have to achieve using SLD's (Styled Layer Descriptors). Since SLD's can get quite big, in our company we wrote a proxy for performing GetMap POST requests with custom SLD's. That proxy is closed source however. You will have to roll your own variant. *Printing*: Printing is always a bit problematic in my experience. You will probably want to build a PDF server side with the information on the map. If the map consists only of pictures (WMS layer, Legend graphics) then you can get quite far with some server side code and a PDF generation framework. There is one open source printing solution that I know of, and that is the MapPrintService in the MapFish framework. At the core it is a Java servlet and right now I am guessing it uses some Java PDF generation library. Printing vector features is a little more challenging. A simple solution for printing is to provide a separate page with a clone of the map in you app, and use the browser to print that. In my experience the vector features get printed also, but you have little control over the printing process itself. Greetings, Edwin Commandeur 2009/8/7 AbdElhadi <abd...@gm...> Hi Cameron, I don't think you can get the feature info from a WMS layer unless the WMS Server supports the GetFeatureInfo. a WMS is basically just an image. AS for Thematics, I don't think OL supports that but I am not sure. Cheers, -Abdelhadi On Thu, Aug 6, 2009 at 11:34 PM, Cameron Hunt <CH...@ci...> wrote: Hi, I’ve just started using GWT-Openlayers and so far it looks great. Having said that I’ve only done a few basic things. I would very much appreciate it if somebody could give me a couple of quick pointers in the right direction for the following tasks please? - Finding out the information about an object (e.g. polygon) when user clicks on map (based on shapefile loaded in as WMS layer) - Thematic mapping (e.g. shading all polygons based on an attribute). - Printing. How do people provide basic printing to their users? Thank you. Regards, Cameron Hunt Software Developer Civica Solutions Pty Limited Ph: (07) 46393633 Fx: (07) 46393632 ch...@ci... www.civica.com.au -- This email is from Civica Pty Limited and it, together with any attachments, is confidential to the intended recipient(s) and the contents may be legally privileged or contain proprietary and private information. It is intended solely for the person to whom it is addressed. If you are not an intended recipient, you may not review, copy or distribute this email. If received in error, please notify the sender and delete the message from your system immediately. Any views or opinions expressed in this email and any files transmitted with it are those of the author only and may not necessarily reflect the views of Civica and do not create any legally binding rights or obligations whatsoever. Unless otherwise pre-agreed by exchange of hard copy documents signed by duly authorised representatives, contracts may not be concluded on behalf of Civica by email. Please note that neither Civica nor the sender accepts any responsibility for any viruses and it is your responsibility to scan the email and the attachments (if any). All email received and sent by Civica may be monitored to protect the business interests of Civica. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Gwt-openlayers-users mailing list Gwt...@li... https://lists.sourceforge.net/lists/listinfo/gwt-openlayers-users -- Abdelhadi ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Gwt-openlayers-users mailing list Gwt...@li... https://lists.sourceforge.net/lists/listinfo/gwt-openlayers-users -- This email is from Civica Pty Limited and it, together with any attachments, is confidential to the intended recipient(s) and the contents may be legally privileged or contain proprietary and private information. It is intended solely for the person to whom it is addressed. If you are not an intended recipient, you may not review, copy or distribute this email. If received in error, please notify the sender and delete the message from your system immediately. Any views or opinions expressed in this email and any files transmitted with it are those of the author only and may not necessarily reflect the views of Civica and do not create any legally binding rights or obligations whatsoever. Unless otherwise pre-agreed by exchange of hard copy documents signed by duly authorised representatives, contracts may not be concluded on behalf of Civica by email. Please note that neither Civica nor the sender accepts any responsibility for any viruses and it is your responsibility to scan the email and the attachments (if any). All email received and sent by Civica may be monitored to protect the business interests of Civica. |
