Posts Tagged Uniform Resource Locator
I’ve been looking at the option for a Publish and Subscribe web service model for a development project which is starting up at work. The research into the Publish and Subscribe model has had me looking at closely at the WS-BaseNotification specification.
To take a closer look at the standard, and what would be involved in implementing this for the project I downloaded the xml schemas (XSD’s) and web service definition language (WSDL) files for the standard. These files I then loaded up into Visual Studio 2010, and that’s when the “fun started”. These files were including (xsd:import) schemas from over the web, and Visual Studio was getting errors doing this. After a quick browse on the internet, it seemed like a common problem, with some complex solutions. So, thinking there must be a better way, I started solving the problem, my way.
Warning 2 Request for the permission of type ‘System.Net.WebPermission, System, Version=18.104.22.168, Culture=neutral, PublicKeyToken=b77a5c561934e089’ failed.
Warning 3 Request for the permission of type ‘System.Security.Permissions.FileIOPermission, mscorlib, Version=22.214.171.124, Culture=neutral, PublicKeyToken=b77a5c561934e089’ failed.
I have found that the simplest way to solve these types of errors is to do the following:
- Download the xsd file being referenced.
- Paste the URL into IE and get the xsd file up in the browser.
- Use File –> Save As. To save a copy of the xsd file into the Visual Studio project directory which you are keeping your source code in.
- Add the xsd file you just downloaded to the project, and open the xml editor for that file.
- Right click the editor tab for file you just downloaded, and select the “Copy Full Path”.
- Then change the xsd:import from:
<xsd:import namespace="http://www.w3.org/2005/08/addressing" schemaLocation="http://www.w3.org/2005/08/addressing/ws-addr.xsd" />
<xsd:import namespace="http://www.w3.org/2005/08/addressing" schemaLocation="file://visual studio 2010/Projects/Project1/DummyShell/ws-addr.xsd" />
- Tip: You have the file location in the clipboard from the “Copy Full Path”, so you only need to swap the \’s to /’s.
- This makes the reference to a local copy of the schema file.
I’ve had situations where Visual Studio still gives the System.Security.Permissions.FileIOPermission exception/error after making this change. Restarting Visual Studio seemed to “clean out” the error and everything was fine after the restart.
Importing schemas into other schemas is a very powerful feature of xml schema language, but a real pain with Visual Studio. I’m not sure why things get so difficult, the schema cache which Visual Studio maintains seems to, in part, cause extra confusion. This approach ignores the schema cache altogether. Although I did “copy” the xml schema (xml.xsd) from the cache, into the project as well (one of the consequential dependencies required it).
I have spent a couple of hours of mucking around with the settings on this site. Now, I think I have sorted out most of the options I want to have in this blog (for now, as always the editor reserves the right to correct, modify, or just plain fiddle about), with a look and feel which is reasonable.
There is one big feature from the Windows Live Blog which is missing WordPress. This feature was the is the list option. On the Windows Live Blog I had lists of books which I was reading, or had read. These lists were looking up the cover art from Amazon, and would link to the book on Amazon. I’ll have to have a think about how to implement on this site. It will be a case of out with the “roll your own HTML”, maybe I’ll need to have some script as well (if one can embed script in the HTML on this site – further research has shown that script is not allowed, so I’ll have to stick with “vanilla HTML”). The basic HTML is not too hard, just an
<img src="" alt="" > tag with the correct URL and other bits of navigation. Doing the same for CD’s would be interesting as well. Finding a site of CD cover art would be the “tricky bit”, the one that Windows Media Player uses would be a good starting point.
After some fiddling about with HTML, Amazon and W3Schools I think I have something which will work for books. I still need to test it this solution on WordPress from within my blog. That testing will come in the next couple of days. The interesting next step will be to see if I can get something working for CD’s, and then DVD’s after that. Amazon may be a source for the CD’s, but I’ve yet to explore that, and the breadth of the CD selections on Amazon.