org.jbpm.pvm.internal.el
Class Expression

java.lang.Object
  org.jbpm.pvm.internal.el.Expression

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

ScriptExpression, StaticTextExpression, UelMethodExpression, UelValueExpression

public abstract class Expression
extends java.lang.Object
implements java.io.Serializable

handles all expression resolving

Author:

Tom Baeyens, Huisheng Xu

See Also:

Serialized Form

Field Summary

static java.lang.String	LANGUAGE_UEL_METHOD
static java.lang.String	LANGUAGE_UEL_VALUE

Constructor Summary

Expression()

Method Summary

static Expression	create(java.lang.String expressionText)
static Expression	create(java.lang.String expressionText, java.lang.String language)
java.lang.Object	evaluate()
java.lang.Object	evaluate(Execution execution)
java.lang.Object	evaluate(Task task)
abstract java.lang.Object	evaluateInScope(ScopeInstanceImpl scopeInstance)
protected javax.el.ELContext	getElContext(ScopeInstanceImpl scopeInstance)
abstract java.lang.String	getExpressionString()
protected static void	initExpressionObjects()
abstract boolean	isLiteralText()

Methods inherited from class java.lang.Object

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

Field Detail

LANGUAGE_UEL_METHOD

public static final java.lang.String LANGUAGE_UEL_METHOD

See Also:

Constant Field Values

LANGUAGE_UEL_VALUE

public static final java.lang.String LANGUAGE_UEL_VALUE

See Also:

Constant Field Values

Constructor Detail

Expression

public Expression()

Method Detail

create

public static Expression create(java.lang.String expressionText)

create

public static Expression create(java.lang.String expressionText,
                                java.lang.String language)

initExpressionObjects

protected static void initExpressionObjects()

evaluate

public java.lang.Object evaluate()

evaluate

public java.lang.Object evaluate(Execution execution)

evaluate

public java.lang.Object evaluate(Task task)

evaluateInScope

public abstract java.lang.Object evaluateInScope(ScopeInstanceImpl scopeInstance)

getElContext

protected javax.el.ELContext getElContext(ScopeInstanceImpl scopeInstance)

getExpressionString

public abstract java.lang.String getExpressionString()

isLiteralText

public abstract boolean isLiteralText()