public class Retain extends SubAssembly
SubAssembly
that will discard all incoming fields except those given on the constructor.
Use this pipe to narrow a stream of tuples, removing unused data.Discard
,
Serialized FormconfigDef, name, parent, stepConfigDef
Constructor and Description |
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Retain(Pipe previous,
Fields retainFields) |
getName, getPrevious, getTailNames, getTails, setPrevious, setTails, unwind
equals, getConfigDef, getHeads, getParent, getStepConfigDef, getTrace, hasConfigDef, hashCode, hasStepConfigDef, id, isEquivalentTo, named, names, outgoingScopeFor, pipes, print, printInternal, resolveIncomingOperationArgumentFields, resolveIncomingOperationPassThroughFields, setParent, toString