org.apache.flink.table.functions.python

枚举 BuiltInPythonAggregateFunction

java.lang.Object

java.lang.Enum<BuiltInPythonAggregateFunction>

org.apache.flink.table.functions.python.BuiltInPythonAggregateFunction

所有已实现的接口:

Serializable, Comparable<BuiltInPythonAggregateFunction>, PythonFunction

public enum BuiltInPythonAggregateFunction
extends Enum<BuiltInPythonAggregateFunction>
implements PythonFunction

The list of the built-in aggregate functions which can be mixed with the Python UDAF.

枚举常量概要

枚举常量

枚举常量和说明
AVG
COUNT
COUNT1
DECIMAL_SUM0
FIRST_VALUE
FIRST_VALUE_RETRACT
FLOAT_SUM0
INT_SUM0
LAST_VALUE
LAST_VALUE_RETRACT
LIST_AGG
LIST_AGG_RETRACT
LIST_AGG_WS_RETRACT
MAX
MAX_RETRACT
MIN
MIN_RETRACT
SUM
SUM_RETRACT

方法概要

限定符和类型	方法和说明
PythonEnv	getPythonEnv() Returns the Python execution environment.
byte[]	getSerializedPythonFunction() Returns the serialized representation of the user-defined python function.
static BuiltInPythonAggregateFunction	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static BuiltInPythonAggregateFunction[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 org.apache.flink.table.functions.python.PythonFunction

getPythonFunctionKind, takesRowAsInput

枚举常量详细资料

AVG

public static final BuiltInPythonAggregateFunction AVG

COUNT1

public static final BuiltInPythonAggregateFunction COUNT1

COUNT

public static final BuiltInPythonAggregateFunction COUNT

FIRST_VALUE

public static final BuiltInPythonAggregateFunction FIRST_VALUE

FIRST_VALUE_RETRACT

public static final BuiltInPythonAggregateFunction FIRST_VALUE_RETRACT

LAST_VALUE

public static final BuiltInPythonAggregateFunction LAST_VALUE

LAST_VALUE_RETRACT

public static final BuiltInPythonAggregateFunction LAST_VALUE_RETRACT

LIST_AGG

public static final BuiltInPythonAggregateFunction LIST_AGG

LIST_AGG_RETRACT

public static final BuiltInPythonAggregateFunction LIST_AGG_RETRACT

LIST_AGG_WS_RETRACT

public static final BuiltInPythonAggregateFunction LIST_AGG_WS_RETRACT

MAX

public static final BuiltInPythonAggregateFunction MAX

MAX_RETRACT

public static final BuiltInPythonAggregateFunction MAX_RETRACT

MIN

public static final BuiltInPythonAggregateFunction MIN

MIN_RETRACT

public static final BuiltInPythonAggregateFunction MIN_RETRACT

INT_SUM0

public static final BuiltInPythonAggregateFunction INT_SUM0

FLOAT_SUM0

public static final BuiltInPythonAggregateFunction FLOAT_SUM0

DECIMAL_SUM0

public static final BuiltInPythonAggregateFunction DECIMAL_SUM0

SUM

public static final BuiltInPythonAggregateFunction SUM

SUM_RETRACT

public static final BuiltInPythonAggregateFunction SUM_RETRACT

方法详细资料

values

public static BuiltInPythonAggregateFunction[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (BuiltInPythonAggregateFunction c : BuiltInPythonAggregateFunction.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static BuiltInPythonAggregateFunction valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

getSerializedPythonFunction

public byte[] getSerializedPythonFunction()

从接口复制的说明: PythonFunction

Returns the serialized representation of the user-defined python function.

指定者:

getSerializedPythonFunction 在接口中 PythonFunction

getPythonEnv

public PythonEnv getPythonEnv()

从接口复制的说明: PythonFunction

Returns the Python execution environment.

指定者:

getPythonEnv 在接口中 PythonFunction