org.apache.hadoop.hive.ql.udf.generic

Class GenericUDTFGetSplits

java.lang.Object

org.apache.hadoop.hive.ql.udf.generic.GenericUDTF

org.apache.hadoop.hive.ql.udf.generic.GenericUDTFGetSplits

Direct Known Subclasses:

GenericUDTFGetSplits2

public class GenericUDTFGetSplits
extends GenericUDTF

GenericUDTFGetSplits.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GenericUDTFGetSplits.PlanFragment

Field Summary

Fields

Modifier and Type	Field and Description
protected ByteArrayOutputStream	bos
protected DataOutput	dos
protected int	inputArgNumSplits
protected String	inputArgQuery
protected IntObjectInspector	intOI
protected org.apache.hadoop.mapred.JobConf	jc
protected boolean	schemaSplitOnly
protected StringObjectInspector	stringOI

Constructor Summary

Constructors

Constructor and Description
GenericUDTFGetSplits()

Method Summary

Modifier and Type	Method and Description
void	close() Called to notify the UDTF that there are no more rows to process.
protected org.apache.hadoop.hive.ql.udf.generic.GenericUDTFGetSplits.SplitResult	getSplitResult(boolean generateLightWeightSplits)
protected void	initArgs(Object[] arguments)
StructObjectInspector	initialize(ObjectInspector[] arguments) Initialize this GenericUDTF.
void	process(Object[] arguments) Give a set of arguments for the UDTF to process.
protected void	validateInput(ObjectInspector[] arguments)

Methods inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDTF

configure, forward, initialize, setCollector

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

stringOI

protected transient StringObjectInspector stringOI

intOI

protected transient IntObjectInspector intOI

jc

protected transient org.apache.hadoop.mapred.JobConf jc

bos

protected ByteArrayOutputStream bos

dos

protected DataOutput dos

inputArgQuery

protected String inputArgQuery

inputArgNumSplits

protected int inputArgNumSplits

schemaSplitOnly

protected boolean schemaSplitOnly

Constructor Detail

GenericUDTFGetSplits

public GenericUDTFGetSplits()

Method Detail

initialize

public StructObjectInspector initialize(ObjectInspector[] arguments)
                                 throws UDFArgumentException

Description copied from class: GenericUDTF

Initialize this GenericUDTF. This will be called only once per instance.

Overrides:

initialize in class GenericUDTF

Parameters:

arguments - An array of ObjectInspectors for the arguments

Returns:

A StructObjectInspector for output. The output struct represents a row of the table where the fields of the stuct are the columns. The field names are unimportant as they will be overridden by user supplied column aliases.

Throws:

UDFArgumentException

validateInput

protected void validateInput(ObjectInspector[] arguments)
                      throws UDFArgumentLengthException,
                             UDFArgumentTypeException

Throws:

UDFArgumentLengthException

UDFArgumentTypeException

process

public void process(Object[] arguments)
             throws HiveException

Description copied from class: GenericUDTF

Give a set of arguments for the UDTF to process.

Specified by:

process in class GenericUDTF

Parameters:

arguments - object array of arguments

Throws:

HiveException

initArgs

protected void initArgs(Object[] arguments)

getSplitResult

protected org.apache.hadoop.hive.ql.udf.generic.GenericUDTFGetSplits.SplitResult getSplitResult(boolean generateLightWeightSplits)
                                                                                         throws HiveException,
                                                                                                IOException

Throws:

HiveException

IOException

close

public void close()
           throws HiveException

Description copied from class: GenericUDTF

Called to notify the UDTF that there are no more rows to process. Clean up code or additional forward() calls can be made here.

Specified by:

close in class GenericUDTF

Throws:

HiveException