org.openspaces.remoting.scripting.cache

Class LRUThreadSafeCompiledScriptCache

java.lang.Object

org.openspaces.remoting.scripting.cache.LRUThreadSafeCompiledScriptCache

All Implemented Interfaces:

CompiledScriptCache

public class LRUThreadSafeCompiledScriptCache
extends Object
implements CompiledScriptCache

An LRU cache that can handle compiled scripts that are thread safe. Thread safe compiled scripts are scripts that can be executed by several threads at the same time.

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
LRUThreadSafeCompiledScriptCache()
LRUThreadSafeCompiledScriptCache(int cacheSize)

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

LRUThreadSafeCompiledScriptCache

public LRUThreadSafeCompiledScriptCache()

LRUThreadSafeCompiledScriptCache

public LRUThreadSafeCompiledScriptCache(int cacheSize)

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