pro.chenggang.project.reactive.mybatis.support.r2dbc.dynamic

Interface CommonCountMapper

public interface CommonCountMapper

This is a general purpose MyBatis mapper for count statements. Count statements are select statements that always return a long.

This mapper can be injected as-is into a MyBatis configuration, or it can be extended with existing mappers.

Author:

Jeff Butler

Method Summary

Modifier and Type	Method and Description
reactor.core.publisher.Mono<Long>	count(org.mybatis.dynamic.sql.select.render.SelectStatementProvider selectStatement) Execute a select statement that returns a long (typically a select(count(*)) statement).

Method Detail

count

@SelectProvider(type=org.mybatis.dynamic.sql.util.SqlProviderAdapter.class,
                method="select")
reactor.core.publisher.Mono<Long> count(org.mybatis.dynamic.sql.select.render.SelectStatementProvider selectStatement)

Execute a select statement that returns a long (typically a select(count(*)) statement). This mapper assumes the statement returns a single row with a single column that cen be retrieved as a long.

Parameters:

selectStatement - the select statement

Returns:

the long value