pnuts.ext

Class CachedPnutsImpl

java.lang.Object

pnuts.lang.Runtime

pnuts.lang.PnutsImpl

pnuts.ext.CachedPnutsImpl

All Implemented Interfaces:

Executable, Implementation

public class CachedPnutsImpl
extends PnutsImpl

PnutsImpl which caches parsed (compiled) scripts and reuse them. This class is useful when same scripts are executed over and over, e.g. servlet scripts.

See Also:

PnutsImpl

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CachedPnutsImpl.ScriptCacheEntry

Nested classes/interfaces inherited from class pnuts.lang.Runtime

Runtime.Accessor, Runtime.Break, Runtime.Continue, Runtime.FunctionSerializer, Runtime.TypeMap

Field Summary

Fields inherited from class pnuts.lang.PnutsImpl

properties

Fields inherited from class pnuts.lang.Runtime

BOOLEAN_SYMBOL, BYTE_SYMBOL, CHAR_SYMBOL, CLONE, DOUBLE_SYMBOL, EXCEPTOIN_FIELD_SYMBOL, FLOAT_SYMBOL, INT_SYMBOL, LONG_SYMBOL, SHORT_SYMBOL, VOID_SYMBOL

Constructor Summary

Constructors

Constructor and Description
CachedPnutsImpl()
CachedPnutsImpl(boolean useCompiler)
CachedPnutsImpl(boolean useCompiler, boolean useDynamicProxy, boolean includeLineNo)
CachedPnutsImpl(boolean useCompiler, boolean useDynamicProxy, boolean includeLineNo, org.pnuts.util.Cache cache)

Method Summary

Methods

Modifier and Type	Method and Description
protected static org.pnuts.util.Cache	createCache()
java.lang.Object	eval(java.lang.String script, Context context) Evaluate an expreesion
protected CachedPnutsImpl.ScriptCacheEntry	getCachedCode(java.lang.Object key)
void	includeLineNo(boolean flag)
java.lang.Object	load(java.net.URL scriptURL, Context context) Load a script file from a URL
protected void	putCachedCode(java.lang.Object key, CachedPnutsImpl.ScriptCacheEntry entry)
void	reset() Reset the cache entries

Methods inherited from class pnuts.lang.PnutsImpl

accept, getDefault, load, loadFile, popFile, provide, pushFile, queryProperty, revoke, setProperties, setProperty

Methods inherited from class pnuts.lang.Runtime

_callConstructor, _callMethod, add, add, add1, add1, addImport, addStaticMembers, and, and, applyGenerator, arraydim, arrayType, call, call, callConstructor, callFunction, callMethod, cast, catchException, checkException, checkException, compareObjects, compareTo, compareTo, createList, createMap, defineTopLevelFunction, defineUnboundFunction, divide, divide, eq, eq, escape, exec, execute, fileToURL, findCallableMethod, format, format, ge, ge, getArrayLength, getBeanProperty, getBeanProperty, getBeanProperty, getBeanPropertyType, getBeginColumn, getBeginLine, getBottomType, getCompiledScript, getConstructors, getElement, getElementAt, getEndLine, getField, getField, getFunction, getFunction, getFunctions, getMessage, getMethods, getProperty, getRange, getRuntime, getScriptReader, getScriptSource, getScriptURL, getStaticField, getThreadContext, gt, gt, isArray, isGenerator, jump, le, le, loadNode, lt, lt, makeArray, matchType, mod, mod, multiply, multiply, ne, ne, negate, negate, newInstance, not, not, or, or, parseChar, parseFloat, parseInt, parseString, primitive, printError, putField, putStaticField, quantity, replaceChar, run, saveNode, setBeanProperty, setBeanProperty, setBeanProperty, setElement, setExitHook, setLine, setLine, setPackage, setRange, setThreadContext, shiftArithmetic, shiftArithmetic, shiftLeft, shiftLeft, shiftRight, shiftRight, subtract, subtract, subtract1, subtract1, throwException, toBoolean, toEnumeration, transform, transform, unparse, xor, xor

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedPnutsImpl

public CachedPnutsImpl()

CachedPnutsImpl

public CachedPnutsImpl(boolean useCompiler)

Parameters:

useCompiler - true if compiler is used (default)

CachedPnutsImpl

public CachedPnutsImpl(boolean useCompiler,
               boolean useDynamicProxy,
               boolean includeLineNo)

Parameters:

useCompiler - true if the compiler is used (default)

useDynamicProxy - true if the compiler generates dynamic proxy.

includeLineNo - true if the compiler generates line number information.

CachedPnutsImpl

public CachedPnutsImpl(boolean useCompiler,
               boolean useDynamicProxy,
               boolean includeLineNo,
               org.pnuts.util.Cache cache)

Parameters:

useCompiler - true if the compiler is used (default)

useDynamicProxy - true if the compiler generates dynamic proxy.

includeLineNo - true if the compiler generates line number information.

cache - a cache object to reuse compiled code

Method Detail

includeLineNo

public void includeLineNo(boolean flag)

createCache

protected static org.pnuts.util.Cache createCache()

reset

public void reset()

Reset the cache entries

getCachedCode

protected CachedPnutsImpl.ScriptCacheEntry getCachedCode(java.lang.Object key)

putCachedCode

protected void putCachedCode(java.lang.Object key,
                 CachedPnutsImpl.ScriptCacheEntry entry)

load

public java.lang.Object load(java.net.URL scriptURL,
                    Context context)

Load a script file from a URL

Specified by:

load in interface Implementation

Overrides:

load in class PnutsImpl

Parameters:

scriptURL - the URL of the script

context - the context in which the script is executed

Returns:

the result of the evaluation

eval

public java.lang.Object eval(java.lang.String script,
                    Context context)

Description copied from class: PnutsImpl

Evaluate an expreesion

Specified by:

eval in interface Implementation

Overrides:

eval in class PnutsImpl

Parameters:

script - the expression to be evaluated

context - the context in which the expression is evaluated

Returns:

the result of the evaluation