Class JavaxCacheQueryDatastoreCompilationCache
java.lang.Object
org.datanucleus.store.query.cache.JavaxCacheQueryDatastoreCompilationCache
- All Implemented Interfaces:
Serializable
,QueryDatastoreCompilationCache
public class JavaxCacheQueryDatastoreCompilationCache
extends Object
implements QueryDatastoreCompilationCache, Serializable
Query compilation (datastore) cache using javax.cache for implementation.
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Field Summary
FieldsModifier and TypeFieldDescriptionThe cache to use.private static final long
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
clear()
Method to clear the cache.void
close()
Method to close the cache when no longer needed.boolean
Accessor for whether the specified query is in the cachevoid
Evict the query from the compilation cache.Accessor for a (generic) compilation from the cache.boolean
isEmpty()
Accessor for whether the cache is empty.Method to put an object in the cache.int
size()
Accessor for the total number of compilations in the query cache.
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Field Details
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serialVersionUID
private static final long serialVersionUID- See Also:
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cache
The cache to use.
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Constructor Details
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JavaxCacheQueryDatastoreCompilationCache
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Method Details
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close
public void close()Description copied from interface:QueryDatastoreCompilationCache
Method to close the cache when no longer needed. Provides a hook to release resources etc.- Specified by:
close
in interfaceQueryDatastoreCompilationCache
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evict
Description copied from interface:QueryDatastoreCompilationCache
Evict the query from the compilation cache.- Specified by:
evict
in interfaceQueryDatastoreCompilationCache
- Parameters:
queryKey
- Key for the query to evict.
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clear
public void clear()Description copied from interface:QueryDatastoreCompilationCache
Method to clear the cache.- Specified by:
clear
in interfaceQueryDatastoreCompilationCache
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isEmpty
public boolean isEmpty()Description copied from interface:QueryDatastoreCompilationCache
Accessor for whether the cache is empty.- Specified by:
isEmpty
in interfaceQueryDatastoreCompilationCache
- Returns:
- Whether it is empty.
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size
public int size()Description copied from interface:QueryDatastoreCompilationCache
Accessor for the total number of compilations in the query cache.- Specified by:
size
in interfaceQueryDatastoreCompilationCache
- Returns:
- Number of queries
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get
Description copied from interface:QueryDatastoreCompilationCache
Accessor for a (generic) compilation from the cache.- Specified by:
get
in interfaceQueryDatastoreCompilationCache
- Parameters:
queryKey
- The query key- Returns:
- The cached query compilation
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put
Description copied from interface:QueryDatastoreCompilationCache
Method to put an object in the cache.- Specified by:
put
in interfaceQueryDatastoreCompilationCache
- Parameters:
queryKey
- The query keycompilation
- The compilation for this datastore- Returns:
- The cached compilation previously associated with this query (if any)
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contains
Description copied from interface:QueryDatastoreCompilationCache
Accessor for whether the specified query is in the cache- Specified by:
contains
in interfaceQueryDatastoreCompilationCache
- Parameters:
queryKey
- The query key- Returns:
- Whether it is in the cache
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