QueryCache (Ontopia)

java.lang.Object
- net.ontopia.persistence.proxy.QueryCache<K,E>

All Implemented Interfaces:

CacheMetricsIF, EvictableIF<K,E>
```
public class QueryCache<K,E>
extends Object
implements EvictableIF<K,E>, CacheMetricsIF
```
INTERNAL: A storage access implementation accessing relational databases using JDBC.

Field Summary

Fields
Modifier and Type Field Description

protected CacheIF<K,E> cache

protected Map<K,E> lru

protected int lrusize

protected DetachedQueryIF query

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear(boolean notifyCluster)`
`E`	`executeQuery(StorageAccessIF access, K cachekey, Object[] query_params)`
`long`	`getCacheSize()`
`long`	`getLRUSize()`
`long`	`getMaxLRUSize()`
`E`	`remove(K key)`
`E`	`remove(K key, boolean notifyCluster)`
`void`	`removeAll(Collection<K> keys)`
`void`	`removeAll(Collection<K> keys, boolean notifyCluster)`
`void`	`writeReport(Writer out, boolean dumpCache)`

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

Field Detail

query
```
protected DetachedQueryIF query
```

cache
```
protected CacheIF<K,E> cache
```

lru
```
protected Map<K,E> lru
```

lrusize
```
protected int lrusize
```

Method Detail

executeQuery

public E executeQuery(StorageAccessIF access,
                      K cachekey,
                      Object[] query_params)

remove
```
public E remove(K key)
```

removeAll

public void removeAll(Collection<K> keys)

remove

public E remove(K key,
                boolean notifyCluster)

Specified by:: remove in interface EvictableIF<K,E>

removeAll

public void removeAll(Collection<K> keys,
                      boolean notifyCluster)

Specified by:: removeAll in interface EvictableIF<K,E>

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

clear in interface EvictableIF<K,E>

writeReport

public void writeReport(Writer out,
                        boolean dumpCache)
                 throws IOException

Throws:: IOException

getCacheSize
```
public long getCacheSize()
```
Specified by:

getCacheSize in interface CacheMetricsIF

getLRUSize
```
public long getLRUSize()
```
Specified by:

getLRUSize in interface CacheMetricsIF

getMaxLRUSize
```
public long getMaxLRUSize()
```
Specified by:

getMaxLRUSize in interface CacheMetricsIF