org.apache.metamodel.util

Enum LegacyDeserializationObjectInputStream.LegacyFunctionType

java.lang.Object

java.lang.Enum<LegacyDeserializationObjectInputStream.LegacyFunctionType>

org.apache.metamodel.util.LegacyDeserializationObjectInputStream.LegacyFunctionType

All Implemented Interfaces:

Serializable, Comparable<LegacyDeserializationObjectInputStream.LegacyFunctionType>, AggregateFunction, FunctionType

Enclosing class:

LegacyDeserializationObjectInputStream

protected static enum LegacyDeserializationObjectInputStream.LegacyFunctionType
extends Enum<LegacyDeserializationObjectInputStream.LegacyFunctionType>
implements AggregateFunction

Implementation of the new FunctionType and AggregateFunction interfaces which still adheres to the constant/enum values of the old FunctionType definition. While deserializing old FunctionType objects, we will convert them to this enum.

Enum Constant Summary

Enum Constants

Enum Constant and Description
AVG
COUNT
MAX
MIN
SUM

Field Summary

Fields inherited from interface org.apache.metamodel.query.FunctionType

AVG, COUNT, FIRST, JAVA_SUBSTRING, LAST, MAP_VALUE, MAX, MIN, RANDOM, SUBSTRING, SUM, TO_BOOLEAN, TO_DATE, TO_NUMBER, TO_STRING

Method Summary

Modifier and Type	Method and Description
AggregateBuilder<?>	createAggregateBuilder() Creates a specific aggregate builder.
Object	evaluate(Object... values) Shorthand for creating an aggregate builder, adding all the values and then calculating the value.
ColumnType	getExpectedColumnType(ColumnType type) Returns the function ColumnType.
String	getFunctionName()
static LegacyDeserializationObjectInputStream.LegacyFunctionType	valueOf(String name) Returns the enum constant of this type with the specified name.
static LegacyDeserializationObjectInputStream.LegacyFunctionType[]	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

COUNT

public static final LegacyDeserializationObjectInputStream.LegacyFunctionType COUNT

AVG

public static final LegacyDeserializationObjectInputStream.LegacyFunctionType AVG

SUM

public static final LegacyDeserializationObjectInputStream.LegacyFunctionType SUM

MAX

public static final LegacyDeserializationObjectInputStream.LegacyFunctionType MAX

MIN

public static final LegacyDeserializationObjectInputStream.LegacyFunctionType MIN

Method Detail

values

public static LegacyDeserializationObjectInputStream.LegacyFunctionType[] 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 (LegacyDeserializationObjectInputStream.LegacyFunctionType c : LegacyDeserializationObjectInputStream.LegacyFunctionType.values())
    System.out.println(c);

Returns:

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

valueOf

public static LegacyDeserializationObjectInputStream.LegacyFunctionType 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

getExpectedColumnType

public ColumnType getExpectedColumnType(ColumnType type)

Description copied from interface: AggregateFunction

Returns the function ColumnType.

Specified by:

getExpectedColumnType in interface AggregateFunction

Specified by:

getExpectedColumnType in interface FunctionType

Returns:

the ColumnType

getFunctionName

public String getFunctionName()

Specified by:

getFunctionName in interface FunctionType

createAggregateBuilder

public AggregateBuilder<?> createAggregateBuilder()

Description copied from interface: AggregateFunction

Creates a specific aggregate builder.

Specified by:

createAggregateBuilder in interface AggregateFunction

Returns:

an AggregateBuilder instance

evaluate

public Object evaluate(Object... values)

Description copied from interface: AggregateFunction

Shorthand for creating an aggregate builder, adding all the values and then calculating the value.

Specified by:

evaluate in interface AggregateFunction

Returns:

the aggregated value