org.teasoft.bee.osql.annotation

Annotation Type Sharding

@Target(value=FIELD)
 @Retention(value=RUNTIME)
public @interface Sharding

Sharding.
Specify different tables in the same database after calculation; Specify different databases after calculation.
When there are multiple tables, cross table is not supported.
The dataSource of the sub table is consistent with the main table.
Order: 1->2
1. Special (if special is configured, others will not be detected)
2. Calculate by algorithm (default if there is no match)

Since:

2.0

Author:

AiTeaSoft

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
String	appointDS appoint dataSource
String	appointTab appoint table name
int	dsAlgorithm 0: operations that can be calculated directly such as remainder; 1: Take part of the string such as date; 2: Custom
String	dsName If dsRule is empty and the value of dsName is not set, the database name is not required.
String	dsRule If dsRule is not set, that is, the default empty value is used, it means that is not to consider the database name.
Class<? extends DsTabHandler>	handler use for define DsTabHandler.
int	tabAlgorithm 0: operations that can be calculated directly such as remainder; 1: Take part of the string such as date; 2: Custom
String	tabName get tabName.
String	tabRule get tabRule

Element Detail

appointDS

public abstract String appointDS

appoint dataSource

Returns:

appointed dataSource

Default:

""

appointTab

public abstract String appointTab

appoint table name

Returns:

appointed table name

Default:

""

dsAlgorithm

public abstract int dsAlgorithm

0: operations that can be calculated directly such as remainder; 1: Take part of the string such as date; 2: Custom

Returns:

value of dsAlgorithm

Default:

0

tabAlgorithm

public abstract int tabAlgorithm

0: operations that can be calculated directly such as remainder; 1: Take part of the string such as date; 2: Custom

Returns:

value of tabAlgorithm

Default:

0

dsRule

public abstract String dsRule

If dsRule is not set, that is, the default empty value is used, it means that is not to consider the database name.
eg: "id%dsSize

Returns:

value of dsRule

Default:

""

dsName

public abstract String dsName

If dsRule is empty and the value of dsName is not set, the database name is not required.
By default, the value calculated by dsRule() will be automatically used as the suffix of dsName.

Returns:

dsName

Default:

""

tabRule

public abstract String tabRule

get tabRule

Returns:

tabRule

Default:

""

tabName

public abstract String tabName

get tabName.
The default is the value calculated by tabRule() as the suffix of tabName.
eg:tab${tabRule}

Returns:

tabName

Default:

""

handler

public abstract Class<? extends DsTabHandler> handler

use for define DsTabHandler.

Returns:

class of DsTabHandler type

Default:

org.teasoft.bee.osql.annotation.DsTabHandler.class