public final class EmitRecords extends ExecutableOperator implements RecordSourceOperator
NOTE: this operator is non-parallel
Constructor and Description |
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EmitRecords()
Emits an undefined record.
|
EmitRecords(RecordTokenList list)
Emits the specified records as output.
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Modifier and Type | Method and Description |
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protected ExecutableOperator |
cloneForExecution()
Performs a deep copy of the operator for execution.
|
protected void |
computeMetadata(StreamingMetadataContext ctx)
Implementations must adhere to the following contracts
|
protected void |
execute(ExecutionContext ctx)
Executes the operator.
|
RecordTokenList |
getInput()
Gets the list of records which will be produced.
|
RecordPort |
getOutput()
Gets the record port providing the output data from the source.
|
void |
setInput(RecordTokenList data)
Sets the list of records which will be produced.
|
getNumInputCopies, getPortSettings, handleInactiveOutput
disableParallelism, getInputPorts, getOutputPorts, newInput, newInput, newOutput, newRecordInput, newRecordInput, newRecordOutput, notifyError
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
disableParallelism, getInputPorts, getOutputPorts
public EmitRecords()
setInput(RecordTokenList)
is not called before executing the containing graph, an
error will be raised.public EmitRecords(RecordTokenList list)
list
- the records to emitpublic RecordTokenList getInput()
public void setInput(RecordTokenList data)
data
- the records to producepublic RecordPort getOutput()
RecordSourceOperator
getOutput
in interface RecordSourceOperator
getOutput
in interface SourceOperator<RecordPort>
protected ExecutableOperator cloneForExecution()
ExecutableOperator
cloneForExecution
in class ExecutableOperator
protected void computeMetadata(StreamingMetadataContext ctx)
StreamingOperator
StreamingMetadataContext.parallelize(ParallelismStrategy)
.
RecordPort#setRequiredDataOrdering
, otherwise data may arrive in any order.
RecordPort#setRequiredDataDistribution
, otherwise data will arrive in an unspecified partial distribution
.
RecordPort#getSourceDataDistribution
and RecordPort#getSourceDataOrdering
. These should be
viewed as a hints to help chose a more efficient algorithm. In such cases, though, operators must
still declare data ordering and data distribution requirements; otherwise there is no guarantee that
data will arrive sorted/distributed as required.
RecordPort#setType
.RecordPort#setOutputDataOrdering
RecordPort#setOutputDataDistribution
AbstractModelPort#setMergeHandler
.MergeModel
is a convenient, re-usable model reducer, parameterized with
a merge-handler.
SimpleModelPort
's have no associated metadata and therefore there is
never any output metadata to declare. PMMLPort
's, on the other hand,
do have associated metadata. For all PMMLPorts, implementations must declare
the following:
PMMLPort.setPMMLModelSpec
.
computeMetadata
in class StreamingOperator
ctx
- the contextprotected void execute(ExecutionContext ctx)
ExecutableOperator
execute
in class ExecutableOperator
ctx
- context in which to lookup physical ports bound to logical portsCopyright © 2016 Actian Corporation. All rights reserved.