Package org.h2.util
Class CacheSecondLevel
- java.lang.Object
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- org.h2.util.CacheSecondLevel
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Field Summary
Fields Modifier and Type Field Description private Cache
baseCache
private java.util.Map<java.lang.Integer,CacheObject>
map
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Constructor Summary
Constructors Constructor Description CacheSecondLevel(Cache cache, java.util.Map<java.lang.Integer,CacheObject> map)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clear()
Clear the cache.CacheObject
find(int pos)
Get an element from the cache if it is available.CacheObject
get(int pos)
Get an element in the cache if it is available.java.util.ArrayList<CacheObject>
getAllChanged()
Get all objects in the cache that have been changed.int
getMaxMemory()
Get the maximum memory to be used.int
getMemory()
Get the used size in KB.void
put(CacheObject r)
Add an element to the cache.boolean
remove(int pos)
Remove an object from the cache.void
setMaxMemory(int size)
Set the maximum memory to be used by this cache.CacheObject
update(int pos, CacheObject record)
Update an element in the cache.
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Field Detail
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baseCache
private final Cache baseCache
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map
private final java.util.Map<java.lang.Integer,CacheObject> map
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Constructor Detail
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CacheSecondLevel
CacheSecondLevel(Cache cache, java.util.Map<java.lang.Integer,CacheObject> map)
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Method Detail
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clear
public void clear()
Description copied from interface:Cache
Clear the cache.
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find
public CacheObject find(int pos)
Description copied from interface:Cache
Get an element from the cache if it is available. This will not move the item to the front of the list.
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get
public CacheObject get(int pos)
Description copied from interface:Cache
Get an element in the cache if it is available. This will move the item to the front of the list.
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getAllChanged
public java.util.ArrayList<CacheObject> getAllChanged()
Description copied from interface:Cache
Get all objects in the cache that have been changed.- Specified by:
getAllChanged
in interfaceCache
- Returns:
- the list of objects
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getMaxMemory
public int getMaxMemory()
Description copied from interface:Cache
Get the maximum memory to be used.- Specified by:
getMaxMemory
in interfaceCache
- Returns:
- the maximum size in KB
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getMemory
public int getMemory()
Description copied from interface:Cache
Get the used size in KB.
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put
public void put(CacheObject r)
Description copied from interface:Cache
Add an element to the cache. Other items may fall out of the cache because of this. It is not allowed to add the same record twice.
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remove
public boolean remove(int pos)
Description copied from interface:Cache
Remove an object from the cache.
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setMaxMemory
public void setMaxMemory(int size)
Description copied from interface:Cache
Set the maximum memory to be used by this cache.- Specified by:
setMaxMemory
in interfaceCache
- Parameters:
size
- the maximum size in KB
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update
public CacheObject update(int pos, CacheObject record)
Description copied from interface:Cache
Update an element in the cache. This will move the item to the front of the list.
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