Hi,

If there are multipleRecipe Argumentsin the Expression of value provider, Evaluator and if any of the argument is empty or null then the value provider throws following error:

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Microsoft.Practices.RecipeFramework.RecipeExecutionException: An exception occurred during the binding of reference or execution of recipe CreateSite. Error was: The following arguments are required and don't have values: HTTPPath. Can't continue execution..
You can remove the reference to this recipe through the Guidance Package Manager.
at Microsoft.Practices.RecipeFramework.Recipe.ThrowIfRequiredArgumentsAreNull(IDictionaryService arguments)
at Microsoft.Practices.RecipeFramework.Recipe.Execute(Boolean allowSuspend)
at Microsoft.Practices.RecipeFramework.GuidancePackage.Execute(String recipe, IAssetReference reference, IDictionary arguments)
at Microsoft.Practices.RecipeFramework.GuidancePackage.Execute(IAssetReference reference)
at Microsoft.Practices.RecipeFramework.RecipeReference.OnExecute()
at Microsoft.Practices.RecipeFramework.VisualStudio.VsBoundReference.OnExecute()
at Microsoft.Practices.RecipeFramework.AssetReference.Execute()
at Microsoft.Practices.RecipeFramework.VisualStudio.RecipeMenuCommand.OnExec()
at Microsoft.Practices.RecipeFramework.VisualStudio.AssetMenuCommand.Invoke()

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Example:

<Argument Name="HTTPPath">

<ValueProvider Type="Evaluator" Expression="http://$(ServerName)(WebSitePort)/$(DirName)"></ValueProvider>

</Argument>

Here, say if value of WebSitePort is not set, then error is thrown.

Expression should evaluate even though any argument value is not available.

How to do this?

Thanks & Regards,

Navneet

Hi Navneet,

That evaluator use a RegEx and there are a well known bug which causes recipe hangs.
more info: http://weblogs.asp.net/cazzu/archive/2006/06/09/regexbug.aspx

If you try use a shortest evaluation the issue will dissapear. A quick workaround could be split the argument, in many others.

hth.
jose.

Hi Navneet,

That evaluator use a RegEx and there are a well known bug which causes recipe hangs.
more info: http://weblogs.asp.net/cazzu/archive/2006/06/09/regexbug.aspx

If you try use a shortest evaluation the issue will dissapear. A quick workaround could be split the argument, in many others.

hth.
jose.