com.alicloud.openservices.tablestore.model

类 Column

java.lang.Object

com.alicloud.openservices.tablestore.model.Column

所有已实现的接口:

Jsonizable, Measurable

public class Column
extends Object
implements Jsonizable, Measurable

In TableStore, each row of data can contain one or more attribute columns (Column), and each attribute column includes a name, a value (ColumnValue), and a timestamp.

字段概要

字段

限定符和类型	字段和说明
static NameTimestampComparator	NAME_TIMESTAMP_COMPARATOR

构造器概要

构造器

构造器和说明
Column(String name, ColumnValue value)
Column(String name, ColumnValue value, long timestamp) Constructs a property column, which must include a name, value, and timestamp.

方法概要

限定符和类型	方法和说明
boolean	equals(Object o)
int	getDataSize() Get the size of the serialized data
String	getName() Get the name of the attribute column.
byte[]	getNameRawData()
long	getTimestamp() Get the timestamp of the attribute column.
ColumnValue	getValue() Get the value of the attribute column.
int	hashCode()
boolean	hasSetTimestamp() Check if a timestamp has been set.
String	jsonize()
void	jsonize(StringBuilder sb, String newline)
String	toString()

从类继承的方法 java.lang.Object

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

字段详细资料

NAME_TIMESTAMP_COMPARATOR

public static NameTimestampComparator NAME_TIMESTAMP_COMPARATOR

构造器详细资料

Column

public Column(String name,
              ColumnValue value,
              long timestamp)

Constructs a property column, which must include a name, value, and timestamp.

The name of the property column cannot be a null pointer or an empty string.

The value of the property column cannot be a null pointer.

参数:

name - The name of the property column

value - The value of the property column

timestamp - The timestamp of the property column

Column

public Column(String name,
              ColumnValue value)

方法详细资料

getName

public String getName()

Get the name of the attribute column.

返回:

the name of the attribute column

getNameRawData

public byte[] getNameRawData()

getValue

public ColumnValue getValue()

Get the value of the attribute column.

返回:

the value of the attribute column

getTimestamp

public long getTimestamp()

Get the timestamp of the attribute column.

返回:

the timestamp of the attribute column

抛出:

IllegalStateException - if this parameter is not set

hasSetTimestamp

public boolean hasSetTimestamp()

Check if a timestamp has been set.

返回:

Returns true if a timestamp has been set, otherwise returns false.

toString

public String toString()

覆盖:

toString 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

jsonize

public String jsonize()

指定者:

jsonize 在接口中 Jsonizable

jsonize

public void jsonize(StringBuilder sb,
                    String newline)

指定者:

jsonize 在接口中 Jsonizable

getDataSize

public int getDataSize()

从接口复制的说明: Measurable

Get the size of the serialized data

指定者:

getDataSize 在接口中 Measurable

返回:

the size of the serialized data