public class SelectFields extends FilterFields
RetainFields, there are two
significant behavioral differences:
RemapFieldsinput, output| Constructor and Description |
|---|
SelectFields()
Keeps no fields from the input.
|
SelectFields(List<String> fields)
Keeps the specified fields from the input.
|
SelectFields(RecordTextSchema<?> schema)
Keeps the specified fields from the input schema.
|
SelectFields(String... fields)
Keeps the specified fields from the input.
|
| Modifier and Type | Method and Description |
|---|---|
RecordPort |
getInput()
Gets the record port providing the input data to the operation.
|
RecordPort |
getOutput()
Gets the record port providing the output from the operation.
|
void |
setSelectionSchema(RecordTextSchema<?> schema)
Sets the schema with the names of the fields
that will be kept.
|
computeMetadata, execute, getFieldNames, setFieldNames, setFieldNamescloneForExecution, getNumInputCopies, getPortSettings, handleInactiveOutputdisableParallelism, getInputPorts, getOutputPorts, newInput, newInput, newOutput, newRecordInput, newRecordInput, newRecordOutput, notifyErrorclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitdisableParallelism, getInputPorts, getOutputPortspublic SelectFields()
FilterFields.setFieldNames(String...).
If no fields are specified when the containing graph is executed,
an error will be raised.public SelectFields(List<String> fields)
fields - the names of fields to keep.public SelectFields(String... fields)
fields - the names of fields to keep.public SelectFields(RecordTextSchema<?> schema)
schema - the schema with the fields to keep.public void setSelectionSchema(RecordTextSchema<?> schema)
schema - the schema that defines the field selectionpublic RecordPort getInput()
AbstractExecutableRecordPipelinegetInput in interface PipelineOperator<RecordPort>getInput in class AbstractExecutableRecordPipelinepublic RecordPort getOutput()
AbstractExecutableRecordPipelinegetOutput in interface PipelineOperator<RecordPort>getOutput in class AbstractExecutableRecordPipelineCopyright © 2016 Actian Corporation. All rights reserved.