com.alicloud.openservices.tablestore.model

类 RowUpdateChange

java.lang.Object

com.alicloud.openservices.tablestore.model.RowChange

com.alicloud.openservices.tablestore.model.RowUpdateChange

所有已实现的接口:

IRow, Measurable, Comparable<IRow>

public class RowUpdateChange
extends RowChange

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	RowUpdateChange.Type

构造器概要

构造器

构造器和说明
RowUpdateChange(RowUpdateChange toCopy) Copy constructor
RowUpdateChange(String tableName) Constructor.
RowUpdateChange(String tableName, PrimaryKey primaryKey) Constructor.
RowUpdateChange(String tableName, PrimaryKey primaryKey, long ts) Constructor.

方法概要

限定符和类型	方法和说明
RowUpdateChange	deleteColumn(String name, long ts) Delete a specific version of an attribute column.
RowUpdateChange	deleteColumns(String name) Delete all versions of a certain property column.
List<Pair<Column,RowUpdateChange.Type>>	getColumnsToUpdate() Get all the columns to be updated.
int	getDataSize() Get the size of the serialized data
RowUpdateChange	increment(Column column)
RowUpdateChange	put(Column column) Write a new attribute column.
RowUpdateChange	put(List<Column> columns) Write a new batch of attribute columns.
RowUpdateChange	put(String name, ColumnValue value) Write a new attribute column.
RowUpdateChange	put(String name, ColumnValue value, long ts) Write a new attribute column.

从类继承的方法 com.alicloud.openservices.tablestore.model.RowChange

addReturnColumn, compareTo, getCondition, getPrimaryKey, getReturnColumnNames, getReturnType, getTableName, setCondition, setPrimaryKey, setReturnType, setTableName

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

RowUpdateChange

public RowUpdateChange(String tableName)

Constructor.

The table name cannot be null or empty.

参数:

tableName - The name of the table

RowUpdateChange

public RowUpdateChange(String tableName,
                       PrimaryKey primaryKey)

Constructor.

The table name cannot be null or empty.

The primary key of the row cannot be null or empty.

参数:

tableName - The name of the table

primaryKey - The primary key of the row

RowUpdateChange

public RowUpdateChange(String tableName,
                       PrimaryKey primaryKey,
                       long ts)

Constructor.

Allows users to set a default timestamp; if the written column does not include a timestamp, this default timestamp will be used.

The default timestamp is irrelevant to delete actions.

The table name cannot be null or empty.

The primary key of the row cannot be null or empty.

参数:

tableName - The name of the table

primaryKey - The primary key of the row

ts - Default timestamp

RowUpdateChange

public RowUpdateChange(RowUpdateChange toCopy)

Copy constructor

参数:

toCopy -

方法详细资料

put

public RowUpdateChange put(Column column)

Write a new attribute column.

参数:

column -

返回:

this (for invocation chain)

put

public RowUpdateChange put(String name,
                           ColumnValue value)

Write a new attribute column.

If timestamp has been set, then the default timestamp will be used.

参数:

name - the name of the attribute column

value - the value of the attribute column

返回:

this (for invocation chain)

put

public RowUpdateChange put(String name,
                           ColumnValue value,
                           long ts)

Write a new attribute column.

参数:

name - the name of the attribute column

value - the value of the attribute column

ts - the timestamp of the attribute column

返回:

this (for invocation chain)

put

public RowUpdateChange put(List<Column> columns)

Write a new batch of attribute columns.

The order of writing attribute columns is consistent with the order in the list.

参数:

columns - List of attribute columns

返回:

this (for invocation chain)

deleteColumn

public RowUpdateChange deleteColumn(String name,
                                    long ts)

Delete a specific version of an attribute column.

参数:

name - the name of the attribute column

ts - the timestamp of the attribute column

返回:

this for chain invocation

deleteColumns

public RowUpdateChange deleteColumns(String name)

Delete all versions of a certain property column.

参数:

name - the name of the property column

返回:

this for chain invocation

increment

public RowUpdateChange increment(Column column)

getColumnsToUpdate

public List<Pair<Column,RowUpdateChange.Type>> getColumnsToUpdate()

Get all the columns to be updated.

If the type is RowUpdateChange.Type.PUT, it indicates writing a property column, and the corresponding Column is the property column to be written.

If the type is RowUpdateChange.Type.DELETE, it indicates deleting a specific version of a property column, and the value in the corresponding Column is invalid.

If the type is RowUpdateChange.Type.DELETE_ALL, it indicates deleting all versions of a property column, and both the value and timestamp in the corresponding Column are invalid.

返回:

all the columns to be updated

getDataSize

public int getDataSize()

从接口复制的说明: Measurable

Get the size of the serialized data

返回:

the size of the serialized data