org.activiti.engine.impl.scripting

Class JuelScriptEngine

java.lang.Object

javax.script.AbstractScriptEngine

org.activiti.engine.impl.scripting.JuelScriptEngine

All Implemented Interfaces:

Compilable, ScriptEngine

public class JuelScriptEngine
extends AbstractScriptEngine
implements Compilable

ScriptEngine that used JUEL for script evaluation and compilation (JSR-223). Uses EL 1.1 if available, to resolve expressions. Otherwise it reverts to EL 1.0, using ExpressionFactoryResolver.

Author:

Frederik Heremans

Field Summary

Fields

Modifier and Type	Field and Description
protected ExpressionFactory	expressionFactory
protected ScriptEngineFactory	scriptEngineFactory

Fields inherited from class javax.script.AbstractScriptEngine

context

Fields inherited from interface javax.script.ScriptEngine

ARGV, ENGINE, ENGINE_VERSION, FILENAME, LANGUAGE, LANGUAGE_VERSION, NAME

Constructor Summary

Constructors

Constructor and Description
JuelScriptEngine()
JuelScriptEngine(ScriptEngineFactory scriptEngineFactory)

Method Summary

Modifier and Type	Method and Description
CompiledScript	compile(Reader reader)
CompiledScript	compile(String script)
Bindings	createBindings()
protected ELContext	createElContext(ScriptContext scriptCtx)
protected ELResolver	createElResolver()
Object	eval(Reader reader, ScriptContext scriptContext)
Object	eval(String script, ScriptContext scriptContext)
protected Object	evaluateExpression(ValueExpression expr, ScriptContext ctx)
ScriptEngineFactory	getFactory()
static void	importFunctions(ScriptContext ctx, String namespace, Object obj)
protected ValueExpression	parse(String script, ScriptContext scriptContext)
static void	print(Object object)

Methods inherited from class javax.script.AbstractScriptEngine

eval, eval, eval, eval, get, getBindings, getContext, getScriptContext, put, setBindings, setContext

Methods inherited from class java.lang.Object

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

Field Detail

scriptEngineFactory

protected ScriptEngineFactory scriptEngineFactory

expressionFactory

protected ExpressionFactory expressionFactory

Constructor Detail

JuelScriptEngine

public JuelScriptEngine(ScriptEngineFactory scriptEngineFactory)

JuelScriptEngine

public JuelScriptEngine()

Method Detail

compile

public CompiledScript compile(String script)
                       throws ScriptException

Specified by:

compile in interface Compilable

Throws:

ScriptException

compile

public CompiledScript compile(Reader reader)
                       throws ScriptException

Specified by:

compile in interface Compilable

Throws:

ScriptException

eval

public Object eval(String script,
                   ScriptContext scriptContext)
            throws ScriptException

Specified by:

eval in interface ScriptEngine

Throws:

ScriptException

eval

public Object eval(Reader reader,
                   ScriptContext scriptContext)
            throws ScriptException

Specified by:

eval in interface ScriptEngine

Throws:

ScriptException

getFactory

public ScriptEngineFactory getFactory()

Specified by:

getFactory in interface ScriptEngine

createBindings

public Bindings createBindings()

Specified by:

createBindings in interface ScriptEngine

evaluateExpression

protected Object evaluateExpression(ValueExpression expr,
                                    ScriptContext ctx)
                             throws ScriptException

Throws:

ScriptException

createElResolver

protected ELResolver createElResolver()

parse

protected ValueExpression parse(String script,
                                ScriptContext scriptContext)
                         throws ScriptException

Throws:

ScriptException

createElContext

protected ELContext createElContext(ScriptContext scriptCtx)

print

public static void print(Object object)

importFunctions

public static void importFunctions(ScriptContext ctx,
                                   String namespace,
                                   Object obj)