public class TextTokenizer extends ExecutableOperator implements RecordPipelineOperator
Constructor and Description |
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TextTokenizer()
Default constructor.
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TextTokenizer(String textField)
Constructor specifying the string field to tokenize.
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Modifier and Type | Method and Description |
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void |
addWordPattern(String wordPattern)
Add a pattern that should be recognized as a single word.
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protected void |
computeMetadata(StreamingMetadataContext ctx)
Implementations must adhere to the following contracts
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protected void |
execute(ExecutionContext ctx)
Executes the operator.
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RecordPort |
getInput()
Get the input port of this operator.
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String |
getInputField()
Get the string field to tokenize.
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RecordPort |
getOutput()
Get the output port of this operator.
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String |
getOutputField()
Get the tokenized output field.
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List<String> |
getWordPatterns()
Get the list of custom word patterns that will be recognized.
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void |
setInputField(String textField)
Set the string field to tokenize.
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void |
setOutputField(String tokenField)
Set the tokenized output field.
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void |
setWordPatterns(List<String> wordPatterns)
Set the list of custom word patterns that will be recognized.
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cloneForExecution, 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 TextTokenizer()
setInputField(String)
and
setOutputField(String)
to set the name of the text
field to tokenize and its output field.public TextTokenizer(String textField)
textField
- The name of the field to tokenizepublic void addWordPattern(String wordPattern)
wordPattern
- A regular expressionpublic void setWordPatterns(List<String> wordPatterns)
wordPatterns
- The list of word patternspublic List<String> getWordPatterns()
public void setInputField(String textField)
If this field does not exist in the input, or is not of type String, an exception will be thrown at composition time.
textField
- The name of the field to tokenizepublic String getInputField()
public void setOutputField(String tokenField)
tokenField
- The name of the token output fieldpublic String getOutputField()
public RecordPort getInput()
getInput
in interface PipelineOperator<RecordPort>
public RecordPort getOutput()
getOutput
in interface PipelineOperator<RecordPort>
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 © 2021 Actian Corporation. All rights reserved.