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

Class GenericUDFOPPlus

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.GenericUDFBaseArithmetic

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

All Implemented Interfaces:

Closeable, AutoCloseable

public class GenericUDFOPPlus
extends GenericUDFBaseArithmetic

The reason that we list evaluate methods with all numeric types is for both better performance and type checking (so we know int + int is still an int instead of a double); otherwise a single method that takes (Number a, Number b) and use a.doubleValue() == b.doubleValue() is enough. The case of int + double will be handled by implicit type casting using UDFRegistry.implicitConvertable method.

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.GenericUDFBaseArithmetic

ansiSqlArithmetic, confLookupNeeded

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

opDisplayName, opName

Constructor Summary

Constructors

Constructor and Description
GenericUDFOPPlus()

Method Summary

Methods

Modifier and Type	Method and Description
protected GenericUDF	instantiateDTIUDF() Instantiate date-time/interval version of the arithmetic UDF
protected GenericUDFBaseNumeric	instantiateNumericUDF() Instantiate numeric version of the arithmetic UDF

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

copyToNewInstance, evaluate, 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, flip, getArgOrder, getConstantIntValue, getConstantLongValue, getConstantStringValue, getDateValue, getDoubleValue, getFuncName, 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

GenericUDFOPPlus

public GenericUDFOPPlus()

Method Detail

instantiateNumericUDF

protected GenericUDFBaseNumeric instantiateNumericUDF()

Description copied from class: GenericUDFBaseArithmetic

Instantiate numeric version of the arithmetic UDF

Specified by:

instantiateNumericUDF in class GenericUDFBaseArithmetic

Returns:

arithmetic UDF for numeric types

instantiateDTIUDF

protected GenericUDF instantiateDTIUDF()

Description copied from class: GenericUDFBaseArithmetic

Instantiate date-time/interval version of the arithmetic UDF

Specified by:

instantiateDTIUDF in class GenericUDFBaseArithmetic

Returns:

arithmetic UDF for date-time/interval types