public class StreamingUDF extends EvalFunc<java.lang.Object>
Modifier and Type | Class and Description |
---|---|
class |
StreamingUDF.ProcessKiller |
EvalFunc.SchemaType
Modifier and Type | Field and Description |
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static java.lang.String |
TURN_ON_OUTPUT_CAPTURING |
pigLogger, reporter, returnType
Constructor and Description |
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StreamingUDF(java.lang.String language,
java.lang.String filePath,
java.lang.String funcName,
java.lang.String outputSchemaString,
java.lang.String schemaLineNumber,
java.lang.String execType,
java.lang.String isIllustrate) |
Modifier and Type | Method and Description |
---|---|
java.lang.Object |
exec(Tuple input)
This callback method must be implemented by all subclasses.
|
static java.util.List<java.lang.String> |
getResourcesForJar()
Returns a list of file names (relative to root of pig jar) of files that need to be
included in the jar shipped to the cluster.
|
Schema |
outputSchema(Schema input)
Report the schema of the output of this UDF.
|
finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, isAsynchronous, progress, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn
public static final java.lang.String TURN_ON_OUTPUT_CAPTURING
public StreamingUDF(java.lang.String language, java.lang.String filePath, java.lang.String funcName, java.lang.String outputSchemaString, java.lang.String schemaLineNumber, java.lang.String execType, java.lang.String isIllustrate) throws StreamingUDFOutputSchemaException, ExecException
public java.lang.Object exec(Tuple input) throws java.io.IOException
EvalFunc
public static java.util.List<java.lang.String> getResourcesForJar()
public Schema outputSchema(Schema input)
EvalFunc
The default implementation interprets the OutputSchema
annotation,
if one is present. Otherwise, it returns null
(no known output schema).
outputSchema
in class EvalFunc<java.lang.Object>
input
- Schema of the inputCopyright © 2007-2012 The Apache Software Foundation