org.apache.drill.exec.expr.annotations

Enum FunctionTemplate.ReturnType

java.lang.Object

java.lang.Enum<FunctionTemplate.ReturnType>

org.apache.drill.exec.expr.annotations.FunctionTemplate.ReturnType

All Implemented Interfaces:

Serializable, Comparable<FunctionTemplate.ReturnType>

Enclosing class:

FunctionTemplate

public static enum FunctionTemplate.ReturnType
extends Enum<FunctionTemplate.ReturnType>

Return type enum is used to indicate which return type calculation logic should be used for functions.

Enum Constant Summary

Enum Constants

Enum Constant and Description
CONCAT
DECIMAL_ADD_SCALE
DECIMAL_AGGREGATE
DECIMAL_CAST
DECIMAL_DIV_SCALE
DECIMAL_MAX_SCALE
DECIMAL_MOD_SCALE
DECIMAL_SET_SCALE
DECIMAL_SUM_AGGREGATE
DECIMAL_SUM_SCALE
DECIMAL_ZERO_SCALE
DEFAULT
PAD
SAME_IN_OUT_LENGTH
STRING_CAST

Method Summary

Methods

Modifier and Type	Method and Description
TypeProtos.MajorType	getType(List<LogicalExpression> logicalExpressions, FunctionAttributes attributes)
static FunctionTemplate.ReturnType	valueOf(String name) Returns the enum constant of this type with the specified name.
static FunctionTemplate.ReturnType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DEFAULT

public static final FunctionTemplate.ReturnType DEFAULT

STRING_CAST

public static final FunctionTemplate.ReturnType STRING_CAST

CONCAT

public static final FunctionTemplate.ReturnType CONCAT

PAD

public static final FunctionTemplate.ReturnType PAD

SAME_IN_OUT_LENGTH

public static final FunctionTemplate.ReturnType SAME_IN_OUT_LENGTH

DECIMAL_AGGREGATE

public static final FunctionTemplate.ReturnType DECIMAL_AGGREGATE

DECIMAL_SUM_AGGREGATE

public static final FunctionTemplate.ReturnType DECIMAL_SUM_AGGREGATE

DECIMAL_MAX_SCALE

public static final FunctionTemplate.ReturnType DECIMAL_MAX_SCALE

DECIMAL_SUM_SCALE

public static final FunctionTemplate.ReturnType DECIMAL_SUM_SCALE

DECIMAL_CAST

public static final FunctionTemplate.ReturnType DECIMAL_CAST

DECIMAL_DIV_SCALE

public static final FunctionTemplate.ReturnType DECIMAL_DIV_SCALE

DECIMAL_MOD_SCALE

public static final FunctionTemplate.ReturnType DECIMAL_MOD_SCALE

DECIMAL_ADD_SCALE

public static final FunctionTemplate.ReturnType DECIMAL_ADD_SCALE

DECIMAL_SET_SCALE

public static final FunctionTemplate.ReturnType DECIMAL_SET_SCALE

DECIMAL_ZERO_SCALE

public static final FunctionTemplate.ReturnType DECIMAL_ZERO_SCALE

Method Detail

values

public static FunctionTemplate.ReturnType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (FunctionTemplate.ReturnType c : FunctionTemplate.ReturnType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static FunctionTemplate.ReturnType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

getType

public TypeProtos.MajorType getType(List<LogicalExpression> logicalExpressions,
                           FunctionAttributes attributes)