Count

The underlying data expressions that supply input for the evaluation. These are used to fetch data from the data stores. There may be some expressions types that generate data and will have an empty set. Examples are constants, random, or time.

Returns a string that can be executed with the stack interpreter to create this expression.

Returns the final grouping for the expression. For non-grouped expressions this will be an empty list. If a multi-level group by is used, then this will return the grouping of the final result and ignore any intermediate groupings.

Returns the grouping key generated for a given tag map. All keys for the group by must be present in the map.

Returns true if the result is grouped. See GroupBy operators.

Rewrite the expression using the specified function. The default implementation will try to recursively apply the rewrite to case classes.

Returns a string representation of the object.

The default representation is platform dependent.

Apply a time shift to all underlying data expressions.