com.alicloud.openservices.tablestore.model

类 Row

java.lang.Object

com.alicloud.openservices.tablestore.model.Row

所有已实现的接口:

IRow, Comparable<IRow>

public class Row
extends Object
implements IRow

构造器概要

构造器

构造器和说明
Row(PrimaryKey primaryKey, Column[] columns) Constructor.
Row(PrimaryKey primaryKey, Column[] columns, boolean needSortColumns)
Row(PrimaryKey primaryKey, List<Column> columns) Constructor.
Row(PrimaryKey primaryKey, List<Column> columns, boolean needSortColumns) Constructor.

方法概要

限定符和类型	方法和说明
int	compareTo(IRow o)
boolean	contains(String name) Check if there is a property column with this name in this row.
List<Column>	getColumn(String name) Get all version values of a specific attribute column with a given name.
Column[]	getColumns() Get all attribute columns.
NavigableMap<String,NavigableMap<Long,ColumnValue>>	getColumnsMap() Returns a Map containing all attribute columns.
Column	getLatestColumn(String name) Get the value of the latest version in this attribute column.
PrimaryKey	getPrimaryKey()
boolean	isEmpty() Check if the row contains any attribute columns.
String	toString()

从类继承的方法 java.lang.Object

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

构造器详细资料

Row

public Row(PrimaryKey primaryKey,
           List<Column> columns)

Constructor.

参数:

primaryKey - The primary key of the row, must not be null or empty

columns - The attribute columns of this row, must not be null

Row

public Row(PrimaryKey primaryKey,
           List<Column> columns,
           boolean needSortColumns)

Constructor.

参数:

primaryKey - The primary key of the row, cannot be null or empty

columns - The attribute columns of this row, cannot be null

needSortColumns - Whether the attribute columns need to be sorted

Row

public Row(PrimaryKey primaryKey,
           Column[] columns)

Constructor.

参数:

primaryKey - The primary key of the row, cannot be null or empty

columns - The attribute columns of this row, cannot be null

Row

public Row(PrimaryKey primaryKey,
           Column[] columns,
           boolean needSortColumns)

方法详细资料

getPrimaryKey

public PrimaryKey getPrimaryKey()

指定者:

getPrimaryKey 在接口中 IRow

getColumns

public Column[] getColumns()

Get all attribute columns.

All attribute columns in the array are sorted in ascending order by name, and attribute columns with the same name are sorted in descending order by timestamp.

返回:

all attribute columns

getColumn

public List<Column> getColumn(String name)

Get all version values of a specific attribute column with a given name.

The returned results will list these attribute columns in descending order by timestamp.

参数:

name - the name of the attribute column

返回:

If the attribute column exists, return all version values in descending order by timestamp; otherwise, return an empty list.

getLatestColumn

public Column getLatestColumn(String name)

Get the value of the latest version in this attribute column.

参数:

name - the name of the attribute column

返回:

If the attribute column exists, return the value of the latest version; otherwise, return null.

contains

public boolean contains(String name)

Check if there is a property column with this name in this row.

参数:

name - The name of the property column

返回:

If it exists, return true; otherwise, return false

isEmpty

public boolean isEmpty()

Check if the row contains any attribute columns.

返回:

Returns true if the row does not contain any attribute columns, otherwise returns false.

getColumnsMap

public NavigableMap<String,NavigableMap<Long,ColumnValue>> getColumnsMap()

Returns a Map containing all attribute columns.

This Map is a two-level Map, the first level maps attribute column names to all versioned attribute columns, and the second level maps timestamps to attribute columns.

Attribute column names are sorted in ascending order in the Map, while attribute column timestamps are sorted in descending order.

返回:

Returns a map containing all attribute columns

compareTo

public int compareTo(IRow o)

指定者:

compareTo 在接口中 Comparable<IRow>

toString

public String toString()

覆盖:

toString 在类中 Object