org.openspaces.remoting.scripting.cache

Class LRUNonThreadSafeCompiledScriptCache

java.lang.Object

org.openspaces.remoting.scripting.cache.LRUNonThreadSafeCompiledScriptCache

All Implemented Interfaces:

CompiledScriptCache

public class LRUNonThreadSafeCompiledScriptCache
extends Object
implements CompiledScriptCache

An LRU cache that can handle compiled scripts that are not thread safe. Non thread safe compiled scripts are scripts that can not be executed by more than one thread at once.

The cache holds a CompiledScriptPool per script name, and allocates a pool when a new one is required. The pool allows to get and put compiled scripts.

Uses a simple LinkedHashMap to implement the LRU.

Author:

kimchy

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_CACHE_SIZE

Constructor Summary

Constructors

Constructor and Description
LRUNonThreadSafeCompiledScriptCache()
LRUNonThreadSafeCompiledScriptCache(int cacheSize)
LRUNonThreadSafeCompiledScriptCache(int cacheSize, CompiledScriptPoolFactory compiledScriptPoolFactory)

Method Summary

Modifier and Type	Method and Description
Object	get(String name, LocalScriptExecutor executor, Script script) Gets the compiled script from the cache.
void	put(String name, Object compiledScript, LocalScriptExecutor executor) Puts a compiled script back to the cache.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_CACHE_SIZE

public static final int DEFAULT_CACHE_SIZE

See Also:

Constant Field Values

Constructor Detail

LRUNonThreadSafeCompiledScriptCache

public LRUNonThreadSafeCompiledScriptCache()

LRUNonThreadSafeCompiledScriptCache

public LRUNonThreadSafeCompiledScriptCache(int cacheSize)

LRUNonThreadSafeCompiledScriptCache

public LRUNonThreadSafeCompiledScriptCache(int cacheSize,
                                           CompiledScriptPoolFactory compiledScriptPoolFactory)

Method Detail

get

public Object get(String name,
                  LocalScriptExecutor executor,
                  Script script)
           throws ScriptCompilationException

Description copied from interface: CompiledScriptCache

Gets the compiled script from the cache. Compiles it if a new instance is needed using the provided local executor.

Specified by:

get in interface CompiledScriptCache

Parameters:

name - The name (key) in the cache.

executor - The executor to use to compile the script.

script - The script to compile

Returns:

A compiled script from the cache

Throws:

ScriptCompilationException

put

public void put(String name,
                Object compiledScript,
                LocalScriptExecutor executor)

Description copied from interface: CompiledScriptCache

Puts a compiled script back to the cache.

Specified by:

put in interface CompiledScriptCache

Parameters:

name - The name (key) in the cache)

compiledScript - The compiled script to put back in the cache.

executor - The executor to use in order to close any evicted compiled scripts from the cache