io.shardingsphere.core.rewrite

类 SQLRewriteEngine

java.lang.Object

io.shardingsphere.core.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, maxiaoguang, panjuan

构造器概要

构造器

构造器和说明
SQLRewriteEngine(ShardingRule shardingRule, String originalSQL, DatabaseType databaseType, SQLStatement sqlStatement, ShardingConditions shardingConditions, List<Object> parameters) Constructs SQL rewrite engine.

方法概要

限定符和类型	方法和说明
SQLUnit	generateSQL(TableUnit tableUnit, SQLBuilder sqlBuilder, ShardingDataSourceMetaData shardingDataSourceMetaData) 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,
                        DatabaseType databaseType,
                        SQLStatement sqlStatement,
                        ShardingConditions shardingConditions,
                        List<Object> parameters)

Constructs SQL rewrite engine.

参数:

shardingRule - databases and tables sharding rule

originalSQL - original SQL

databaseType - database type

sqlStatement - SQL statement

shardingConditions - sharding conditions

parameters - parameters

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 SQLUnit generateSQL(TableUnit tableUnit,
                           SQLBuilder sqlBuilder,
                           ShardingDataSourceMetaData shardingDataSourceMetaData)

Generate SQL string.

参数:

tableUnit - route table unit

sqlBuilder - SQL builder

shardingDataSourceMetaData - sharding data source meta data

返回:

SQL unit