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

Class GenericUDFBaseCompare

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

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

GenericUDFOPEqual, GenericUDFOPEqualOrGreaterThan, GenericUDFOPEqualOrLessThan, GenericUDFOPGreaterThan, GenericUDFOPLessThan, GenericUDFOPNotEqual

public abstract class GenericUDFBaseCompare
extends GenericUDFBaseBinary

GenericUDF Base Class for operations.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GenericUDFBaseCompare.CompareType

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

GenericUDF.DeferredJavaObject, GenericUDF.DeferredObject

Field Summary

Fields

Modifier and Type	Field and Description
protected ObjectInspector[]	argumentOIs
protected BooleanObjectInspector	boi0
protected BooleanObjectInspector	boi1
protected ByteObjectInspector	byoi0
protected ByteObjectInspector	byoi1
protected ObjectInspector	compareOI
protected GenericUDFBaseCompare.CompareType	compareType
protected GenericUDFUtils.ReturnObjectInspectorResolver	conversionHelper
protected ObjectInspectorConverters.Converter	converter0
protected ObjectInspectorConverters.Converter	converter1
protected IntObjectInspector	ioi0
protected IntObjectInspector	ioi1
protected LongObjectInspector	loi0
protected LongObjectInspector	loi1
protected org.apache.hadoop.io.BooleanWritable	result
protected StringObjectInspector	soi0
protected StringObjectInspector	soi1

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

opDisplayName, opName

Constructor Summary

Constructors

Constructor and Description
GenericUDFBaseCompare()

Method Summary

Modifier and Type	Method and Description
protected void	checkConversionAllowed(ObjectInspector argOI, ObjectInspector compareOI)
Integer	compare(GenericUDF.DeferredObject[] arguments)
ObjectInspector	initialize(ObjectInspector[] arguments) Initialize this GenericUDF.
protected PrimitiveObjectInspectorUtils.PrimitiveGrouping	primitiveGroupOf(ObjectInspector oi)
protected boolean	supportsCategory(ObjectInspector.Category c) Returns whether the operator can handle operands with the specified category.

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

adapt, checkArgGroups, checkArgPrimitive, checkArgsSize, close, configure, copyToNewInstance, evaluate, flip, getArgOrder, getConstantBooleanValue, getConstantIntValue, getConstantStringValue, getDateValue, getDoubleValue, getFuncName, 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

Field Detail

argumentOIs

protected transient ObjectInspector[] argumentOIs

conversionHelper

protected transient GenericUDFUtils.ReturnObjectInspectorResolver conversionHelper

compareOI

protected ObjectInspector compareOI

compareType

protected GenericUDFBaseCompare.CompareType compareType

converter0

protected transient ObjectInspectorConverters.Converter converter0

converter1

protected transient ObjectInspectorConverters.Converter converter1

soi0

protected transient StringObjectInspector soi0

soi1

protected transient StringObjectInspector soi1

ioi0

protected transient IntObjectInspector ioi0

ioi1

protected transient IntObjectInspector ioi1

loi0

protected transient LongObjectInspector loi0

loi1

protected transient LongObjectInspector loi1

byoi0

protected transient ByteObjectInspector byoi0

byoi1

protected transient ByteObjectInspector byoi1

boi0

protected transient BooleanObjectInspector boi0

boi1

protected transient BooleanObjectInspector boi1

result

protected final org.apache.hadoop.io.BooleanWritable result

Constructor Detail

GenericUDFBaseCompare

public GenericUDFBaseCompare()

Method Detail

initialize

public ObjectInspector initialize(ObjectInspector[] arguments)
                           throws UDFArgumentException

Description copied from class: GenericUDF

Initialize this GenericUDF. This will be called once and only once per GenericUDF instance.

Specified by:

initialize in class GenericUDF

Parameters:

arguments - The ObjectInspector for the arguments

Returns:

The ObjectInspector for the return value

Throws:

UDFArgumentException - Thrown when arguments have wrong types, wrong length, etc.

supportsCategory

protected boolean supportsCategory(ObjectInspector.Category c)

Returns whether the operator can handle operands with the specified category.

checkConversionAllowed

protected void checkConversionAllowed(ObjectInspector argOI,
                                      ObjectInspector compareOI)
                               throws UDFArgumentException

Throws:

UDFArgumentException

primitiveGroupOf

protected PrimitiveObjectInspectorUtils.PrimitiveGrouping primitiveGroupOf(ObjectInspector oi)

compare

public Integer compare(GenericUDF.DeferredObject[] arguments)
                throws HiveException

Throws:

HiveException