org.flowable.common.engine.impl.el

Interface ExpressionManager

All Known Implementing Classes:

DefaultExpressionManager

public interface ExpressionManager

Used as an entry point for runtime evaluation of the expressions.

Author:

Tijs Rademakers, Joram Barrez

Method Summary

Modifier and Type	Method and Description
Expression	createExpression(String expression) Creates an Expression instance from the given String.
Map<Object,Object>	getBeans() Returns the beans registered with this expression manager instance.
ELContext	getElContext(VariableContainer variableContainer) Creates an ELContext against which Expression instance can be resolved.
List<FlowableExpressionEnhancer>	getExpressionEnhancers() Returns the FlowableExpressionEnhancer which potentially can alter the expression text before being transformed into an Expression instance.
List<FlowableFunctionDelegate>	getFunctionDelegates() Returns the custom functions registered and usable in expressions.
void	setBeans(Map<Object,Object> beans) Sets the beans which can be used in expressions.
void	setExpressionEnhancers(List<FlowableExpressionEnhancer> expressionEnhancers) Sets the FlowableExpressionEnhancer instances which can enhance expression texts before being tranformed into an Expression instance.
void	setFunctionDelegates(List<FlowableFunctionDelegate> functionDelegates) Set the custom functions usable in expressions.

Method Detail

createExpression

Expression createExpression(String expression)

Creates an Expression instance from the given String. Expression are resolved against a VariableContainer (e.g. a process Execution, a case instance plan item, etc.)

getElContext

ELContext getElContext(VariableContainer variableContainer)

Creates an ELContext against which Expression instance can be resolved.

getBeans

Map<Object,Object> getBeans()

Returns the beans registered with this expression manager instance.

setBeans

void setBeans(Map<Object,Object> beans)

Sets the beans which can be used in expressions.

getFunctionDelegates

List<FlowableFunctionDelegate> getFunctionDelegates()

Returns the custom functions registered and usable in expressions.

setFunctionDelegates

void setFunctionDelegates(List<FlowableFunctionDelegate> functionDelegates)

Set the custom functions usable in expressions.

getExpressionEnhancers

List<FlowableExpressionEnhancer> getExpressionEnhancers()

Returns the FlowableExpressionEnhancer which potentially can alter the expression text before being transformed into an Expression instance.

setExpressionEnhancers

void setExpressionEnhancers(List<FlowableExpressionEnhancer> expressionEnhancers)

Sets the FlowableExpressionEnhancer instances which can enhance expression texts before being tranformed into an Expression instance.