When to use logical existence and when to use logical string

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    • July 27, 2010 at 2:22 AM #25384
      community-content

        Hello.

        In a Map I check some source elements if they exist or not. For this I use the logical existence functoid.

        But if I use the logical existence functoid behind another functoid, like a table extractor or a string functoid, I have to use a logical string functoid to check if a value exists or not.

        Otherwise I get an error if I test the map in Visual Studio. The error is called: String was not recognized as a Boolean.

        So what is really the differenc between logical existence and logical string? Is there a “best practice” how to use and when to use it?

        Thanks in advance.

        Wolfgang 

      • July 27, 2010 at 8:06 AM #25394
        community-content

          Hi Wolfgang,

           

             The logical existence functoid checks to see whether the source node exists, regardless of whether or not it contains data. The logical string functoid determines whether the input parameter is a string or not.

              So, in your scenario, you should use the logical string functoid.

           

             Daniel.

           

          • July 27, 2010 at 8:14 AM #25395
            community-content

              Hi Daniel.

              Ah ok … now it is clear.

              Yes, you’re right I should use the logical string function functoid.

              Thank you very much.

              Wolfgang

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            biztalkgurus

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