LRUCache (IoTDB: Core: TsFile 1.3.0 API)

java.lang.Object
- org.apache.iotdb.tsfile.common.cache.LRUCache<K,T>

All Implemented Interfaces:: Cache<K,T>

public abstract class LRUCache<K,T>
extends Object
implements Cache<K,T>

This class is not thread safe.

Field Summary

Fields
Modifier and Type Field Description

protected Map<K,T> cache

Constructor Summary

Constructors
Modifier Constructor Description

protected LRUCache(int cacheSize)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear()`
`T`	`get(K key)`
`protected abstract T`	`loadObjectByKey(K key)`
`void`	`put(K key, T value)`
`void`	`removeItem(K key)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- cache
```
protected Map<K,T> cache
```

Constructor Detail
- LRUCache
```
protected LRUCache(int cacheSize)
```

Method Detail

get
```
public T get(K key)
      throws IOException
```
Specified by:

get in interface Cache<K,T>

Throws:

IOException

clear
```
public void clear()
```
Specified by:

clear in interface Cache<K,T>

put

public void put(K key,
                T value)

loadObjectByKey

protected abstract T loadObjectByKey(K key)
                              throws IOException

Throws:: IOException

removeItem
```
public void removeItem(K key)
```