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POMapping Input fields to new output fields for serialization in c#
 

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  1. POMapping Input fields to new output fields for serialization in c#
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    <p>I mention C# in my title but this is a generic programming question. I am just looking to find the best approach to do the following:</p> <p>I have tableA which contains the following fields</p> <pre><code>ID : 1 ProjectName : "Test" City : "NY" Size : 100 Location : "USA" </code></pre> <p>Now I need to serialize that table for a 3rd party application however I the application uses a generic data contract (see below) and in addition the field names would have to be slightly modified. So the above table would be serialized as follows:</p> <pre><code>&lt;Object&gt; &lt;type&gt;Project&lt;/type&gt; &lt;Fields&gt; &lt;Key&gt;NameofProject&lt;/Key&gt;&lt;Value&gt;Test&lt;/value&gt; &lt;Key&gt;ProjectCity&lt;/Key&gt;&lt;Value&gt;NY&lt;/value&gt; &lt;Key&gt;ProjectLocation&lt;/Key&gt;&lt;Value&gt;USA&lt;/value&gt; &lt;/Fields&gt; &lt;/Object&gt; </code></pre> <p>As you can see I needed to map the fields from TableA into new field names/keys:</p> <pre><code>ProjectName -&gt; NameofProject City -&gt; ProjectCity Location -&gt;ProjectLocation </code></pre> <p>This is how I would achieve the above: - Create a mapping table which stores the mapping relationships as described above</p> <pre><code>InputField -&gt; OutputKey ProjectName -&gt; NameofProject City -&gt; ProjectCity Location -&gt;ProjectLocation I would then load the data from this table into a Set I would then loop through each row of the input - for each column in the row I would get the OutputKey based on the InputField as stored in my mapping Set, and build the xml </code></pre> <p>I assume storing a small amount of info in a Set and then doing the lookups for each field shouldnt be too bad. But I am not an experienced C# user so am wondering if there is a better way to do this in c#. Any help or direction would be greatly appreciated.</p> <p>EDIT: A comment suggested using XSLT - its a good idea but due to other complexities of this task its better for me to build the xml in code based on a data contract. Is there any way to achive the mapping via a sql join of the input data table and the mapping table?</p>
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    1. USGotts
    1. USGotts
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    1. COYou can use the built in Xml Serializer and then use appropriate XSLT and transform the serialized input to the ouput and this XSLT can be obtained from a config file or from the table in db so it can change dynamically without code recompile
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      1. USSaravanan
    2. COthat sounds like an interesting idea. I have not worked much with XSLT before - to know how to do this but will look into it.Is there no way to do the mapping on the field names when querying the table by means of a join to the mapping table?
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      1. USGotts
    3. COAlso - I need to use a data contract shared by the application so its not ideal to do the mapping via XSLT. And for other reasons that are going to make it complex
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      1. USGotts
 

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