Package org.camunda.bpm.engine.impl.el

Class ExpressionManager

java.lang.Object

org.camunda.bpm.engine.impl.el.ExpressionManager

Direct Known Subclasses:

CdiExpressionManager, MockExpressionManager, SpringExpressionManager

public class ExpressionManager
extends Object

Central manager for all expressions.

Process parsers will use this to build expression objects that are stored in the process definitions.

Then also this class is used as an entry point for runtime evaluation of the expressions.

Author:

Tom Baeyens, Dave Syer, Frederik Heremans

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<Object,Object>	beans
protected ELResolver	elResolver
protected ExpressionFactory	expressionFactory
protected List<FunctionMapper>	functionMappers
protected ELContext	parsingElContext

Constructor Summary

Constructors

Constructor	Description
ExpressionManager()
ExpressionManager(Map<Object,Object> beans)

Method Summary

Modifier and Type	Method	Description
void	addFunctionMapper(FunctionMapper elFunctionMapper)
protected ProcessEngineElContext	createElContext(VariableScope variableScope)
ELContext	createElContext(VariableContext variableContext)
protected ELResolver	createElResolver()
Expression	createExpression(String expression)
ValueExpression	createValueExpression(String expression)
protected ELResolver	getCachedElResolver()
ELContext	getElContext(VariableScope variableScope)
void	setExpressionFactory(ExpressionFactory expressionFactory)

Methods inherited from class java.lang.Object

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

Field Detail

functionMappers

protected List<FunctionMapper> functionMappers

expressionFactory

protected ExpressionFactory expressionFactory

parsingElContext

protected ELContext parsingElContext

beans

protected Map<Object,Object> beans

elResolver

protected volatile ELResolver elResolver

Constructor Detail

ExpressionManager

public ExpressionManager()

ExpressionManager

public ExpressionManager(Map<Object,Object> beans)

Method Detail

createExpression

public Expression createExpression(String expression)

createValueExpression

public ValueExpression createValueExpression(String expression)

setExpressionFactory

public void setExpressionFactory(ExpressionFactory expressionFactory)

getElContext

public ELContext getElContext(VariableScope variableScope)

createElContext

public ELContext createElContext(VariableContext variableContext)

createElContext

protected ProcessEngineElContext createElContext(VariableScope variableScope)

getCachedElResolver

protected ELResolver getCachedElResolver()

createElResolver

protected ELResolver createElResolver()

addFunctionMapper

public void addFunctionMapper(FunctionMapper elFunctionMapper)

Parameters:

elFunctionMapper -