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

Class GenericUDFGreatest

java.lang.Object

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

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

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

All Implemented Interfaces:

Closeable, AutoCloseable

public class GenericUDFGreatest
extends GenericUDFBaseNwayCompare

GenericUDF Class for SQL construct "greatest(v1, v2, .. vn)".

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDF

GenericUDF.DeferredJavaObject, GenericUDF.DeferredObject

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDFBaseNwayCompare

argumentOIs, converters, resultOI

Constructor Summary

Constructors

Constructor and Description
GenericUDFGreatest()

Method Summary

Modifier and Type	Method and Description
protected String	getFuncName()
protected int	getOrder()

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

evaluate, getDisplayString, initialize

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

checkArgGroups, checkArgPrimitive, checkArgsSize, close, configure, copyToNewInstance, flip, getArgOrder, getConstantBooleanValue, getConstantIntValue, getConstantStringValue, getDateValue, getDoubleValue, getIntervalDayTimeValue, getIntervalYearMonthValue, getIntValue, getLongValue, getRequiredFiles, getRequiredJars, getStandardDisplayString, getStandardDisplayString, getStringValue, getTimestampValue, getUdfName, initializeAndFoldConstants, negative, obtainDateConverter, obtainDoubleConverter, obtainIntConverter, obtainLongConverter, obtainStringConverter, obtainTimestampConverter

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericUDFGreatest

public GenericUDFGreatest()

Method Detail

getFuncName

protected String getFuncName()

Overrides:

getFuncName in class GenericUDF

getOrder

protected int getOrder()

Returns:

desired comparison (positive for greatest, negative for least)