Railo 4.2 Reference
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Object Method Query.filter

This function creates a new Query that returns all rows from an query that match the given filter.
Query.filter(function filter,[boolean parallel,[number maxThreads]]):query


The arguments for this function are set. You can not use other arguments except the following ones.
Name Type Required Description
filter function  Yes filter can be a function/closure that implements the following constructor [function(struct row[, number rowNumber, query query]):boolean].
parallel boolean  No execute closures parallel
maxThreads number  No maximum number of threads executed, ignored when argument "parallel" is set to false