org.apache.hadoop.hive.ql.exec
Class FunctionUtils

java.lang.Object
  org.apache.hadoop.hive.ql.exec.FunctionUtils

public class FunctionUtils
extends Object

Nested Class Summary

static class	FunctionUtils.FunctionType Function type, for permanent functions.
static class	FunctionUtils.UDFClassType Enum type to describe what kind of UDF implementation class

Constructor Summary

FunctionUtils()

Method Summary

static String[]	getQualifiedFunctionNameParts(String name)
static FunctionUtils.UDFClassType	getUDFClassType(Class<?> udfClass) Determine the UDF class type of the class
static boolean	isQualifiedFunctionName(String functionName)
static String	qualifyFunctionName(String functionName, String dbName)
static String[]	splitQualifiedFunctionName(String functionName) Splits a qualified function name into an array containing the database name and function name.

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionUtils

public FunctionUtils()

Method Detail

isQualifiedFunctionName

public static boolean isQualifiedFunctionName(String functionName)

qualifyFunctionName

public static String qualifyFunctionName(String functionName,
                                         String dbName)

splitQualifiedFunctionName

public static String[] splitQualifiedFunctionName(String functionName)
                                           throws HiveException

Splits a qualified function name into an array containing the database name and function name. If the name is not qualified, the database name is null. If there is more than one '.', an exception will be thrown.

Parameters:

functionName - Function name, which may or may not be qualified

Returns:

Throws:

HiveException

getQualifiedFunctionNameParts

public static String[] getQualifiedFunctionNameParts(String name)
                                              throws HiveException

Throws:

HiveException

getUDFClassType

public static FunctionUtils.UDFClassType getUDFClassType(Class<?> udfClass)

Determine the UDF class type of the class

Parameters:

udfClass -

Returns:

UDFClassType enum corresponding to the class type of the UDF