org.dromara.hutool.db.dialect.impl

Class DmDialect

java.lang.Object

org.dromara.hutool.db.dialect.impl.AnsiSqlDialect

org.dromara.hutool.db.dialect.impl.DmDialect

All Implemented Interfaces:

Serializable, Dialect

public class DmDialect
extends AnsiSqlDialect

达梦数据库方言

Author:

wb04307201

See Also:

Serialized Form

Field Summary

Fields inherited from class org.dromara.hutool.db.dialect.impl.AnsiSqlDialect

dbConfig, quoteWrapper

Constructor Summary

Constructors

Constructor and Description
DmDialect(DbConfig dbConfig) 构造

Method Summary

Modifier and Type	Method and Description
String	dialectName() 方言名
PreparedStatement	psForUpsert(Connection conn, Entity entity, String... keys) 构建用于upsert的PreparedStatement 达梦使用 MERGE INTO 语法可合并 UPDATE 和 INSERT 语句 参考文档：https://eco.dameng.com/document/dm/zh-cn/pm/insertion-deletion-modification#5.4%20MERGE%20INTO%20%E8%AF%AD%E5%8F%A5

Methods inherited from class org.dromara.hutool.db.dialect.impl.AnsiSqlDialect

getWrapper, psForDelete, psForFind, psForInsert, psForInsertBatch, psForPage, psForPage, psForUpdate, setWrapper, wrapPageSql

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.dromara.hutool.db.dialect.Dialect

psForCount, psForCount

Constructor Detail

DmDialect

public DmDialect(DbConfig dbConfig)

构造

Parameters:

dbConfig - 数据库配置

Method Detail

dialectName

public String dialectName()

Description copied from interface: Dialect

方言名

Specified by:

dialectName in interface Dialect

Overrides:

dialectName in class AnsiSqlDialect

Returns:

方言名

psForUpsert

public PreparedStatement psForUpsert(Connection conn,
                                     Entity entity,
                                     String... keys)

构建用于upsert的PreparedStatement
达梦使用 MERGE INTO 语法可合并 UPDATE 和 INSERT 语句
参考文档：https://eco.dameng.com/document/dm/zh-cn/pm/insertion-deletion-modification#5.4%20MERGE%20INTO%20%E8%AF%AD%E5%8F%A5

Specified by:

psForUpsert in interface Dialect

Overrides:

psForUpsert in class AnsiSqlDialect

Parameters:

conn - 数据库连接对象

entity - 数据实体类（包含表名）

keys - 查找字段，某些数据库此字段必须，如H2，某些数据库无需此字段，如MySQL（通过主键）

Returns:

PreparedStatement