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

Class GenericUDFOPLessThan

java.lang.Object

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

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

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

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

All Implemented Interfaces:

Closeable, AutoCloseable

public class GenericUDFOPLessThan
extends GenericUDFBaseCompare

GenericUDF Class for operation LessThan.

Nested Class Summary

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

GenericUDFBaseCompare.CompareType

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.GenericUDFBaseCompare

argumentOIs, boi0, boi1, byoi0, byoi1, compareOI, compareType, conversionHelper, converter0, converter1, ioi0, ioi1, loi0, loi1, result, soi0, soi1

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

opDisplayName, opName

Constructor Summary

Constructors

Constructor and Description
GenericUDFOPLessThan()

Method Summary

Methods

Modifier and Type	Method and Description
Object	evaluate(GenericUDF.DeferredObject[] arguments) Evaluate the GenericUDF with the arguments.
GenericUDF	flip() Some functions like comparisons may be affected by appearing order of arguments.
GenericUDF	negative() Gets the negative function of the current one.

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

compare, initialize

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

getDisplayString

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

checkArgGroups, checkArgPrimitive, checkArgsSize, close, configure, copyToNewInstance, getArgOrder, getConstantIntValue, getConstantLongValue, getConstantStringValue, getDateValue, getDoubleValue, getFuncName, getIntValue, getLongValue, getRequiredFiles, getRequiredJars, getStandardDisplayString, getStandardDisplayString, getStringValue, getTimestampValue, getUdfName, initializeAndFoldConstants, 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

GenericUDFOPLessThan

public GenericUDFOPLessThan()

Method Detail

evaluate

public Object evaluate(GenericUDF.DeferredObject[] arguments)
                throws HiveException

Description copied from class: GenericUDF

Evaluate the GenericUDF with the arguments.

Specified by:

evaluate in class GenericUDF

Parameters:

arguments - The arguments as DeferedObject, use DeferedObject.get() to get the actual argument Object. The Objects can be inspected by the ObjectInspectors passed in the initialize call.

Returns:

The

Throws:

HiveException

flip

public GenericUDF flip()

Description copied from class: GenericUDF

Some functions like comparisons may be affected by appearing order of arguments. This is to convert a function, such as 3 > x to x < 3. The flip function of GenericUDFOPGreaterThan is GenericUDFOPLessThan.

Overrides:

flip in class GenericUDF

negative

public GenericUDF negative()

Description copied from class: GenericUDF

Gets the negative function of the current one. E.g., GenericUDFOPNotEqual for GenericUDFOPEqual, or GenericUDFOPNull for GenericUDFOPNotNull.

Overrides:

negative in class GenericUDF

Returns:

Negative function