org.apache.flink.api.java.tuple

类 Tuple8<T0,T1,T2,T3,T4,T5,T6,T7>

java.lang.Object

org.apache.flink.api.java.tuple.Tuple

org.apache.flink.api.java.tuple.Tuple8<T0,T1,T2,T3,T4,T5,T6,T7>

类型参数:

T0 - The type of field 0

T1 - The type of field 1

T2 - The type of field 2

T3 - The type of field 3

T4 - The type of field 4

T5 - The type of field 5

T6 - The type of field 6

T7 - The type of field 7

所有已实现的接口:

Serializable

@Public
public class Tuple8<T0,T1,T2,T3,T4,T5,T6,T7>
extends Tuple

A tuple with 8 fields. Tuples are strongly typed; each field may be of a separate type. The fields of the tuple can be accessed directly as public fields (f0, f1, ...) or via their position through the getField(int) method. The tuple field positions start at zero.

Tuples are mutable types, meaning that their fields can be re-assigned. This allows functions that work with Tuples to reuse objects in order to reduce pressure on the garbage collector.

Warning: If you subclass Tuple8, then be sure to either

• not add any new fields, or
• make it a POJO, and always declare the element type of your DataStreams/DataSets to your descendant type. (That is, if you have a "class Foo extends Tuple8", then don't use instances of Foo in a DataStream<Tuple8> / DataSet<Tuple8>, but declare it as DataStream<Foo> / DataSet<Foo>.)

另请参阅:

Tuple, 序列化表格

字段概要

字段

限定符和类型	字段和说明
T0	f0 Field 0 of the tuple.
T1	f1 Field 1 of the tuple.
T2	f2 Field 2 of the tuple.
T3	f3 Field 3 of the tuple.
T4	f4 Field 4 of the tuple.
T5	f5 Field 5 of the tuple.
T6	f6 Field 6 of the tuple.
T7	f7 Field 7 of the tuple.

从类继承的字段 org.apache.flink.api.java.tuple.Tuple

MAX_ARITY

构造器概要

构造器

构造器和说明
Tuple8() Creates a new tuple where all fields are null.
Tuple8(T0 value0, T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6, T7 value7) Creates a new tuple and assigns the given values to the tuple's fields.

方法概要

限定符和类型	方法和说明
Tuple8<T0,T1,T2,T3,T4,T5,T6,T7>	copy() Shallow tuple copy.
boolean	equals(Object o) Deep equality for tuples by calling equals() on the tuple members.
int	getArity() Gets the number of field in the tuple (the tuple arity).
<T> T	getField(int pos) Gets the field at the specified position.
int	hashCode()
static <T0,T1,T2,T3,T4,T5,T6,T7> Tuple8<T0,T1,T2,T3,T4,T5,T6,T7>	of(T0 value0, T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6, T7 value7) Creates a new tuple and assigns the given values to the tuple's fields.
<T> void	setField(T value, int pos) Sets the field at the specified position.
void	setFields(T0 value0, T1 value1, T2 value2, T3 value3, T4 value4, T5 value5, T6 value6, T7 value7) Sets new values to all fields of the tuple.
String	toString() Creates a string representation of the tuple in the form (f0, f1, f2, f3, f4, f5, f6, f7), where the individual fields are the value returned by calling Object.toString() on that field.

从类继承的方法 org.apache.flink.api.java.tuple.Tuple

getFieldNotNull, getTupleClass, newInstance

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

f0

public T0 f0

Field 0 of the tuple.

f1

public T1 f1

Field 1 of the tuple.

f2

public T2 f2

Field 2 of the tuple.

f3

public T3 f3

Field 3 of the tuple.

f4

public T4 f4

Field 4 of the tuple.

f5

public T5 f5

Field 5 of the tuple.

f6

public T6 f6

Field 6 of the tuple.

f7

public T7 f7

Field 7 of the tuple.

构造器详细资料

Tuple8

public Tuple8()

Creates a new tuple where all fields are null.

Tuple8

public Tuple8(T0 value0,
              T1 value1,
              T2 value2,
              T3 value3,
              T4 value4,
              T5 value5,
              T6 value6,
              T7 value7)

Creates a new tuple and assigns the given values to the tuple's fields.

参数:

value0 - The value for field 0

value1 - The value for field 1

value2 - The value for field 2

value3 - The value for field 3

value4 - The value for field 4

value5 - The value for field 5

value6 - The value for field 6

value7 - The value for field 7

方法详细资料

getArity

public int getArity()

从类复制的说明: Tuple

Gets the number of field in the tuple (the tuple arity).

指定者:

getArity 在类中 Tuple

返回:

The number of fields in the tuple.

getField

public <T> T getField(int pos)

从类复制的说明: Tuple

Gets the field at the specified position.

指定者:

getField 在类中 Tuple

参数:

pos - The position of the field, zero indexed.

返回:

The field at the specified position.

setField

public <T> void setField(T value,
                         int pos)

从类复制的说明: Tuple

Sets the field at the specified position.

指定者:

setField 在类中 Tuple

参数:

value - The value to be assigned to the field at the specified position.

pos - The position of the field, zero indexed.

setFields

public void setFields(T0 value0,
                      T1 value1,
                      T2 value2,
                      T3 value3,
                      T4 value4,
                      T5 value5,
                      T6 value6,
                      T7 value7)

Sets new values to all fields of the tuple.

参数:

value0 - The value for field 0

value1 - The value for field 1

value2 - The value for field 2

value3 - The value for field 3

value4 - The value for field 4

value5 - The value for field 5

value6 - The value for field 6

value7 - The value for field 7

toString

public String toString()

Creates a string representation of the tuple in the form (f0, f1, f2, f3, f4, f5, f6, f7), where the individual fields are the value returned by calling Object.toString() on that field.

覆盖:

toString 在类中 Object

返回:

The string representation of the tuple.

equals

public boolean equals(Object o)

Deep equality for tuples by calling equals() on the tuple members.

覆盖:

equals 在类中 Object

参数:

o - the object checked for equality

返回:

true if this is equal to o.

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

copy

public Tuple8<T0,T1,T2,T3,T4,T5,T6,T7> copy()

Shallow tuple copy.

指定者:

copy 在类中 Tuple

返回:

A new Tuple with the same fields as this.

of

public static <T0,T1,T2,T3,T4,T5,T6,T7> Tuple8<T0,T1,T2,T3,T4,T5,T6,T7> of(T0 value0,
                                                                           T1 value1,
                                                                           T2 value2,
                                                                           T3 value3,
                                                                           T4 value4,
                                                                           T5 value5,
                                                                           T6 value6,
                                                                           T7 value7)

Creates a new tuple and assigns the given values to the tuple's fields. This is more convenient than using the constructor, because the compiler can infer the generic type arguments implicitly. For example: Tuple3.of(n, x, s) instead of new Tuple3<Integer, Double, String>(n, x, s)