com.dangdang.ddframe.rdb.sharding.rewrite

类 SQLRewriteEngine

java.lang.Object

com.dangdang.ddframe.rdb.sharding.rewrite.SQLRewriteEngine

public final class SQLRewriteEngine
extends Object

SQL rewrite engine.

Rewrite logic SQL to actual SQL, should rewrite table name and optimize something.

作者:

zhangliang

构造器概要

构造器

构造器和说明
SQLRewriteEngine(ShardingRule shardingRule, String originalSQL, SQLStatement sqlStatement) Constructs SQL rewrite engine.

方法概要

方法

限定符和类型	方法和说明
String	generateSQL(CartesianTableReference cartesianTableReference, SQLBuilder sqlBuilder) Generate SQL string.
String	generateSQL(TableUnit tableUnit, SQLBuilder sqlBuilder) Generate SQL string.
SQLBuilder	rewrite(boolean isRewriteLimit) rewrite SQL.

从类继承的方法 java.lang.Object

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

构造器详细资料

SQLRewriteEngine

public SQLRewriteEngine(ShardingRule shardingRule,
                String originalSQL,
                SQLStatement sqlStatement)

Constructs SQL rewrite engine.

参数:

shardingRule - databases and tables sharding rule

originalSQL - original SQL

sqlStatement - SQL statement

方法详细资料

rewrite

public SQLBuilder rewrite(boolean isRewriteLimit)

rewrite SQL.

参数:

isRewriteLimit - is rewrite limit

返回:

SQL builder

generateSQL

public String generateSQL(TableUnit tableUnit,
                 SQLBuilder sqlBuilder)

Generate SQL string.

参数:

tableUnit - route table unit

sqlBuilder - SQL builder

返回:

SQL string

generateSQL

public String generateSQL(CartesianTableReference cartesianTableReference,
                 SQLBuilder sqlBuilder)

Generate SQL string.

参数:

cartesianTableReference - cartesian table reference

sqlBuilder - SQL builder

返回:

SQL string