Package org.flowable.common.engine.impl.el

Interface ExpressionManager

All Known Implementing Classes:

CmmnExpressionManager, DefaultExpressionManager, ProcessExpressionManager, VariableScopeExpressionManager

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	Description
Expression	createExpression(String expression)	Creates an Expression instance from the given String.
List<FlowableAstFunctionCreator>	getAstFunctionCreators()	Returns the FlowableAstFunctionCreator which potentially can alter the expression functions during the creation of an Expression instance.
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<FlowableFunctionDelegate>	getFunctionDelegates()	Returns the custom functions registered and usable in expressions.
FlowableFunctionResolverFactory	getFunctionResolverFactory()
void	setAstFunctionCreators(List<FlowableAstFunctionCreator> astFunctionCreators)	Sets the FlowableAstFunctionCreator instances which can alter the expression functions during the creation of an Expression instance.
void	setBeans(Map<Object,Object> beans)	Sets the beans which can be used in expressions.
void	setFunctionDelegates(List<FlowableFunctionDelegate> functionDelegates)	Set the custom functions usable in expressions.
void	setFunctionResolverFactory(FlowableFunctionResolverFactory functionResolverFactory)

Method Details

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.

getAstFunctionCreators

List<FlowableAstFunctionCreator> getAstFunctionCreators()

Returns the FlowableAstFunctionCreator which potentially can alter the expression functions during the creation of an Expression instance.

setAstFunctionCreators

void setAstFunctionCreators(List<FlowableAstFunctionCreator> astFunctionCreators)

Sets the FlowableAstFunctionCreator instances which can alter the expression functions during the creation of an Expression instance.

getFunctionResolverFactory

FlowableFunctionResolverFactory getFunctionResolverFactory()

setFunctionResolverFactory

void setFunctionResolverFactory(FlowableFunctionResolverFactory functionResolverFactory)