org.mybatis.dynamic.sql.select.aggregate

Class CountAll

java.lang.Object

org.mybatis.dynamic.sql.select.aggregate.CountAll

All Implemented Interfaces:

BasicColumn

public class CountAll
extends Object
implements BasicColumn

CountAll seems like the other aggregates, but it is special because there is no column. Rather than dealing with a useless and confusing abstraction, we simply implement BasicColumn directly.

Author:

Jeff Butler

Constructor Summary

Constructors

Constructor and Description
CountAll()

Method Summary

Modifier and Type	Method and Description
Optional<String>	alias() Returns the columns alias if one has been specified.
CountAll	as(String alias) Returns a new instance of a BasicColumn with the alias set.
String	renderWithTableAlias(TableAliasCalculator tableAliasCalculator) Returns the name of the item aliased with a table name if appropriate.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mybatis.dynamic.sql.BasicColumn

columnList, renderWithTableAndColumnAlias

Constructor Detail

CountAll

public CountAll()

Method Detail

renderWithTableAlias

public String renderWithTableAlias(TableAliasCalculator tableAliasCalculator)

Description copied from interface: BasicColumn

Returns the name of the item aliased with a table name if appropriate. For example, "a.foo". This is appropriate for where clauses and order by clauses.

Specified by:

renderWithTableAlias in interface BasicColumn

Parameters:

tableAliasCalculator - the table alias calculator for the current renderer

Returns:

the item name with the table alias applied

alias

public Optional<String> alias()

Description copied from interface: BasicColumn

Returns the columns alias if one has been specified.

Specified by:

alias in interface BasicColumn

Returns:

the column alias

as

public CountAll as(String alias)

Description copied from interface: BasicColumn

Returns a new instance of a BasicColumn with the alias set.

Specified by:

as in interface BasicColumn

Parameters:

alias - the column alias to set

Returns:

new instance with alias set