Package top.tangyh.basic.base.manager.impl

Class SuperCacheManagerImpl<M extends SuperMapper<T>,T extends SuperEntity>

java.lang.Object

com.baomidou.mybatisplus.extension.repository.AbstractRepository<M,T>

com.baomidou.mybatisplus.extension.repository.CrudRepository<M,T>

com.baomidou.mybatisplus.extension.service.impl.ServiceImpl<M,T>

top.tangyh.basic.base.manager.impl.SuperManagerImpl<M,T>

top.tangyh.basic.base.manager.impl.SuperCacheManagerImpl<M,T>

Type Parameters:

M -

T -

All Implemented Interfaces:

com.baomidou.mybatisplus.extension.repository.IRepository<T>, com.baomidou.mybatisplus.extension.service.IService<T>, SuperCacheManager<T>, SuperManager<T>

public abstract class SuperCacheManagerImpl<M extends SuperMapper<T>,T extends SuperEntity>
extends SuperManagerImpl<M,T>
implements SuperCacheManager<T>

基于 CacheOps 实现的 缓存实现 默认的key规则： #{CacheKeyBuilder#key()}:id

1，getByIdCache：新增的方法： 先查缓存，在查db 2，removeById：重写 ServiceImpl 类的方法，删除db后，淘汰缓存 3，removeByIds：重写 ServiceImpl 类的方法，删除db后，淘汰缓存 4，updateAllById： 新增的方法： 修改数据（所有字段）后，淘汰缓存 5，updateById：重写 ServiceImpl 类的方法，修改db后，淘汰缓存

Author:

zuihou

Field Summary

Fields

Modifier and Type	Field	Description
protected CacheOps	cacheOps
protected static final int	MAX_BATCH_KEY_SIZE

Fields inherited from class com.baomidou.mybatisplus.extension.repository.CrudRepository

baseMapper

Fields inherited from class com.baomidou.mybatisplus.extension.repository.AbstractRepository

log

Fields inherited from interface com.baomidou.mybatisplus.extension.repository.IRepository

DEFAULT_BATCH_SIZE

Constructor Summary

Constructors

Constructor	Description
SuperCacheManagerImpl()

Method Summary

Modifier and Type	Method	Description
protected abstract CacheKeyBuilder	cacheKeyBuilder()	缓存key 构造器
void	clearCache(List<Long> ids)	清理缓存
void	delCache(Serializable... ids)	清理缓存
void	delCache(Collection<?> idList)	清理缓存
void	delCache(T model)	清理缓存
List<T>	findByIds(Collection<? extends Serializable> ids, Function<Collection<? extends Serializable>,Collection<T>> loader)	根据ID，批量查询缓存。
<E> Set<E>	findCollectByIds(List<Long> keyIdList, Function<Long,CacheKey> cacheBuilder, Function<Long,List<E>> loader)	根据id 批量查询缓存
T	getByIdCache(Serializable id)	根据id 先查缓存，再查db
T	getByKey(CacheKey key, Function<CacheKey,Object> loader)	根据 key 查询缓存中存放的id，缓存不存在根据loader加载并写入数据，然后根据查询出来的id查询 实体
protected Object	getId(T model)
void	refreshCache(List<Long> ids)	刷新缓存
boolean	removeById(Serializable id)
boolean	removeByIds(Collection<?> idList)
boolean	save(T model)
boolean	saveBatch(Collection<T> entityList, int batchSize)
boolean	saveOrUpdateBatch(Collection<T> entityList, int batchSize)
void	setCache(T model)	设置缓存
boolean	updateAllById(T model)	根据id修改 entity 的所有字段
boolean	updateBatchById(Collection<T> entityList, int batchSize)
boolean	updateById(T model)

Methods inherited from class top.tangyh.basic.base.manager.impl.SuperManagerImpl

getEntityClass, getSuperMapper

Methods inherited from class com.baomidou.mybatisplus.extension.repository.CrudRepository

getBaseMapper, getSqlStatement

Methods inherited from class com.baomidou.mybatisplus.extension.repository.AbstractRepository

executeBatch, executeBatch, getMap, getMapperClass, getObj, getOne, getOneOpt, getSqlSessionFactory, removeById, saveOrUpdate

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.baomidou.mybatisplus.extension.repository.IRepository

count, count, exists, getBaseMapper, getById, getMap, getObj, getOne, getOne, getOneOpt, getOneOpt, getOptById, ktQuery, ktUpdate, lambdaQuery, lambdaQuery, lambdaUpdate, list, list, list, list, listByIds, listByMap, listMaps, listMaps, listMaps, listMaps, listObjs, listObjs, listObjs, listObjs, page, page, pageMaps, pageMaps, query, remove, removeById, removeById, removeByIds, removeByMap, saveOrUpdate, update, update, update

Methods inherited from interface com.baomidou.mybatisplus.extension.service.IService

removeBatchByIds, saveBatch, saveOrUpdateBatch, updateBatchById

Methods inherited from interface top.tangyh.basic.base.manager.SuperManager

getEntityClass, saveBatchSomeColumn

Field Details

MAX_BATCH_KEY_SIZE

protected static final int MAX_BATCH_KEY_SIZE

See Also:

• Constant Field Values

cacheOps

@Autowired
protected CacheOps cacheOps

Constructor Details

SuperCacheManagerImpl

public SuperCacheManagerImpl()

Method Details

cacheKeyBuilder

protected abstract CacheKeyBuilder cacheKeyBuilder()

缓存key 构造器

Returns:

缓存key构造器

getByIdCache

@Transactional(readOnly=true)
public T getByIdCache(Serializable id)

Description copied from interface: SuperCacheManager

根据id 先查缓存，再查db

Specified by:

getByIdCache in interface SuperCacheManager<M extends SuperMapper<T>>

Parameters:

id - 主键

Returns:

对象

findCollectByIds

@Transactional(readOnly=true)
public <E> Set<E> findCollectByIds(List<Long> keyIdList,
 Function<Long,CacheKey> cacheBuilder,
 Function<Long,List<E>> loader)

Description copied from interface: SuperCacheManager

根据id 批量查询缓存

Specified by:

findCollectByIds in interface SuperCacheManager<M extends SuperMapper<T>>

Type Parameters:

E - 查询的对象

Parameters:

keyIdList - id集合

cacheBuilder - 缓存key构造器

loader - 加载数据的回调方法

Returns:

findByIds

@Transactional(readOnly=true)
public List<T> findByIds(@NonNull
 Collection<? extends Serializable> ids,
 Function<Collection<? extends Serializable>,Collection<T>> loader)

Description copied from interface: SuperCacheManager

根据ID，批量查询缓存。 若缓存中不存在某条数据，则去数据库中加载数据， 数据库中不存在的数据，直接缓存空缓存。

1. 分批次从redis通过 mget 命令获取数据 2. 将redis中不存在的数据(missedIds)通过loader方法 查询出来 3. 将loader方法查询出来的结果(missList) 设置到redis中缓存起来 4. 将loader方法方法未查询出来的结果，设置到redis缓存为 "空值"

注意： 1. ids 参数的数量和返回值的数量一致 2. 若数据库中不存在 ids 的某一个值，返回值对应的数据为 null， 并将会向redis缓存空值

Specified by:

findByIds in interface SuperCacheManager<M extends SuperMapper<T>>

Parameters:

ids - 主键id

loader - 回调

Returns:

对象集合

getByKey

@Transactional(readOnly=true)
public T getByKey(CacheKey key,
 Function<CacheKey,Object> loader)

Description copied from interface: SuperCacheManager

根据 key 查询缓存中存放的id，缓存不存在根据loader加载并写入数据，然后根据查询出来的id查询 实体

Specified by:

getByKey in interface SuperCacheManager<M extends SuperMapper<T>>

Parameters:

key - 缓存key

loader - 加载器

Returns:

对象

removeById

@Transactional(rollbackFor=java.lang.Exception.class)
public boolean removeById(Serializable id)

Specified by:

removeById in interface com.baomidou.mybatisplus.extension.repository.IRepository<M extends SuperMapper<T>>

removeByIds

@Transactional(rollbackFor=java.lang.Exception.class)
public boolean removeByIds(Collection<?> idList)

Specified by:

removeByIds in interface com.baomidou.mybatisplus.extension.repository.IRepository<M extends SuperMapper<T>>

save

@Transactional(rollbackFor=java.lang.Exception.class)
public boolean save(T model)

Specified by:

save in interface com.baomidou.mybatisplus.extension.repository.IRepository<M extends SuperMapper<T>>

updateAllById

@Transactional(rollbackFor=java.lang.Exception.class)
public boolean updateAllById(T model)

Description copied from interface: SuperManager

根据id修改 entity 的所有字段

Specified by:

updateAllById in interface SuperManager<M extends SuperMapper<T>>

Overrides:

updateAllById in class SuperManagerImpl<M extends SuperMapper<T>,T extends SuperEntity>

Returns:

updateById

@Transactional(rollbackFor=java.lang.Exception.class)
public boolean updateById(T model)

Specified by:

updateById in interface com.baomidou.mybatisplus.extension.repository.IRepository<M extends SuperMapper<T>>

saveBatch

@Transactional(rollbackFor=java.lang.Exception.class)
public boolean saveBatch(Collection<T> entityList,
 int batchSize)

Specified by:

saveBatch in interface com.baomidou.mybatisplus.extension.repository.IRepository<M extends SuperMapper<T>>

Overrides:

saveBatch in class com.baomidou.mybatisplus.extension.repository.CrudRepository<M extends SuperMapper<T>,T extends SuperEntity>

saveOrUpdateBatch

@Transactional(rollbackFor=java.lang.Exception.class)
public boolean saveOrUpdateBatch(Collection<T> entityList,
 int batchSize)

Specified by:

saveOrUpdateBatch in interface com.baomidou.mybatisplus.extension.repository.IRepository<M extends SuperMapper<T>>

Overrides:

saveOrUpdateBatch in class com.baomidou.mybatisplus.extension.repository.CrudRepository<M extends SuperMapper<T>,T extends SuperEntity>

updateBatchById

@Transactional(rollbackFor=java.lang.Exception.class)
public boolean updateBatchById(Collection<T> entityList,
 int batchSize)

Specified by:

updateBatchById in interface com.baomidou.mybatisplus.extension.repository.IRepository<M extends SuperMapper<T>>

Overrides:

updateBatchById in class com.baomidou.mybatisplus.extension.repository.CrudRepository<M extends SuperMapper<T>,T extends SuperEntity>

refreshCache

public void refreshCache(List<Long> ids)

Description copied from interface: SuperCacheManager

刷新缓存

Specified by:

refreshCache in interface SuperCacheManager<M extends SuperMapper<T>>

clearCache

public void clearCache(List<Long> ids)

Description copied from interface: SuperCacheManager

清理缓存

Specified by:

clearCache in interface SuperCacheManager<M extends SuperMapper<T>>

delCache

public void delCache(Serializable... ids)

Description copied from interface: SuperCacheManager

清理缓存

Specified by:

delCache in interface SuperCacheManager<M extends SuperMapper<T>>

delCache

public void delCache(Collection<?> idList)

Description copied from interface: SuperCacheManager

清理缓存

Specified by:

delCache in interface SuperCacheManager<M extends SuperMapper<T>>

delCache

public void delCache(T model)

Description copied from interface: SuperCacheManager

清理缓存

Specified by:

delCache in interface SuperCacheManager<M extends SuperMapper<T>>

setCache

public void setCache(T model)

Description copied from interface: SuperCacheManager

设置缓存

Specified by:

setCache in interface SuperCacheManager<M extends SuperMapper<T>>

getId

protected Object getId(T model)