Execute XMLA request

Processes XMLA (XML for Analysis) requests for MDX query execution and OLAP metadata discovery.

This endpoint handles two types of XMLA operations:

• Execute: Runs MDX queries against the OLAP cubes and returns cell data
• Discover: Retrieves metadata about available cubes, dimensions, hierarchies, measures, etc.

The request body must be a valid XMLA SOAP envelope. The response format depends on content negotiation headers and can be returned as:

• Standard XML (text/xml or application/xml)
• Binary XML (for improved performance with compatible clients)
• Compressed responses (when supported by the client)

Session management is supported through XMLA session headers for maintaining context across multiple requests.