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When the condition does not work metamuja resource file

<?xml version="1.0" encoding="UTF-8" ?>
<Resource xmlns="http://xml.metamug.net/resource/1.0" v="1.0">
    <Request method="GET">
        <Desc> Example Resource </Desc>
       <Query when="x eq true"> 
          SELECT 'true'
         </Query>
      <Query when="x eq false"> 
          SELECT 'false'
      </Query>
    </Request>
</Resource>

When I send the x parameter, the server responds with 412 Precondition Failed

Error

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1 answer


The conditional requests attribute is used in the resource

file . Thus, the conditional expression is expected in the attribute . In your case, since you said you were sending as a parameter, you need to write it this waywhen

when


x 

<?xml version="1.0" encoding="UTF-8" ?>
<Resource xmlns="http://xml.metamug.net/resource/1.0" v="1.0">
    <Request method="GET">
        <Desc> Example Resource </Desc>
       <Query when="$x eq true"> 
          SELECT 'true'
         </Query>
      <Query when="$x eq false"> 
          SELECT 'false'
      </Query>
    </Request>
</Resource>


The variable prefix $

denotes it as variable

, if not, then it is constructed as a String

literal, which in this case must enclose it with quotes. Example.

<Query when="'x' eq false">
       //your query
    </Query>
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