com.dangdang.ddframe.rdb.sharding.routing.strategy

类 ShardingStrategy

java.lang.Object

com.dangdang.ddframe.rdb.sharding.routing.strategy.ShardingStrategy

直接已知子类:

DatabaseShardingStrategy, TableShardingStrategy

public class ShardingStrategy
extends Object

分片策略.

作者:

zhangliang

构造器概要

构造器

构造器和说明
ShardingStrategy(Collection<String> shardingColumns, ShardingAlgorithm shardingAlgorithm)
ShardingStrategy(String shardingColumn, ShardingAlgorithm shardingAlgorithm)

方法概要

方法

限定符和类型	方法和说明
Collection<String>	doDynamicSharding(Collection<ShardingValue<?>> shardingValues) 计算动态分片.
Collection<String>	doStaticSharding(SQLType sqlType, Collection<String> availableTargetNames, Collection<ShardingValue<?>> shardingValues) 计算静态分片.

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

ShardingStrategy

public ShardingStrategy(String shardingColumn,
                ShardingAlgorithm shardingAlgorithm)

ShardingStrategy

public ShardingStrategy(Collection<String> shardingColumns,
                ShardingAlgorithm shardingAlgorithm)

方法详细资料

doStaticSharding

public Collection<String> doStaticSharding(SQLType sqlType,
                                  Collection<String> availableTargetNames,
                                  Collection<ShardingValue<?>> shardingValues)

计算静态分片.

参数:

sqlType - SQL语句的类型

availableTargetNames - 所有的可用分片资源集合

shardingValues - 分片值集合

返回:

分库后指向的数据源名称集合

doDynamicSharding

public Collection<String> doDynamicSharding(Collection<ShardingValue<?>> shardingValues)

计算动态分片.

参数:

shardingValues - 分片值集合

返回:

分库后指向的分片资源集合