Package org.apache.drill.exec.expr.fn.registry
package org.apache.drill.exec.expr.fn.registry
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ClassDescriptionHolder class that contains: function name function signature which is string representation of function name and its input parameters
DrillFuncHolderassociated with the functionFunction registry holder stores function implementations by jar name, function name.Holder class that contains: jar name scan of packages, classes, annotations found in jar unique jar classLoaderRegistry of Drill functions.Is responsible for remote function registry management.