Order by an expression in Solr

[cmd.ares]

In SQL you can order by an expression like:
SELECT * FROM TABLE1 ORDER BY 
(
CASE WHEN COL1 BETWEEN ${PARAM1} - 10 AND ${PARAM1} + 10 AND COL2=${PARAM2}
THEN 1
        WHEN COL1 BETWEEN ${PARAM1} - 10 AND ${PARAM1} + 10 AND
COL3=${PARAM2} THEN 2
        WHEN COL1 - COL3=${PARAM3} THEN 3
        WHEN COL4 LIKE '${PARAM4}%' THEN 4
END
)

AND HOW TO DO THAT IN SOLR?
THANKS!



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