Package org.springframework.statemachine.support

Class AbstractExpressionEvaluator

java.lang.Object

org.springframework.statemachine.support.AbstractExpressionEvaluator

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.InitializingBean

Direct Known Subclasses:

StateMachineMethodInvokerHelper

public abstract class AbstractExpressionEvaluator
extends Object
implements org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.InitializingBean

Base class providing common functionality for using Spring expression language.

Author:

Mark Fisher, Dave Syer, Oleg Zhurakousky, Artem Bilan, Gary Russell, Janne Valkealahti

Constructor Summary

Constructors

Constructor	Description
AbstractExpressionEvaluator()

Method Summary

Modifier and Type	Method	Description
void	afterPropertiesSet()
protected Object	evaluateExpression(String expression, Object input)
protected <T> T	evaluateExpression(String expression, Object input, Class<T> expectedType)
protected Object	evaluateExpression(org.springframework.expression.Expression expression)
protected <T> T	evaluateExpression(org.springframework.expression.Expression expression, Class<T> expectedType)
protected Object	evaluateExpression(org.springframework.expression.Expression expression, Object input)
protected <T> T	evaluateExpression(org.springframework.expression.Expression expression, Object input, Class<T> expectedType)
protected org.springframework.expression.spel.support.StandardEvaluationContext	getEvaluationContext()	Gets the evaluation context.
protected final org.springframework.expression.spel.support.StandardEvaluationContext	getEvaluationContext(boolean beanFactoryRequired)	Emits a WARN log if the beanFactory field is null, unless the argument is false.
void	setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
void	setConversionService(org.springframework.core.convert.ConversionService conversionService)	Sets the conversion service.

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractExpressionEvaluator

public AbstractExpressionEvaluator()

Method Details

setBeanFactory

public void setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)

Specified by:

setBeanFactory in interface org.springframework.beans.factory.BeanFactoryAware

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Specified by:

afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean

Throws:

Exception

setConversionService

public void setConversionService(org.springframework.core.convert.ConversionService conversionService)

Sets the conversion service.

Parameters:

conversionService - the new conversion service

getEvaluationContext

protected org.springframework.expression.spel.support.StandardEvaluationContext getEvaluationContext()

Gets the evaluation context.

Returns:

the evaluation context

getEvaluationContext

protected final org.springframework.expression.spel.support.StandardEvaluationContext getEvaluationContext(boolean beanFactoryRequired)

Emits a WARN log if the beanFactory field is null, unless the argument is false.

Parameters:

beanFactoryRequired - set to false to suppress the warning.

Returns:

The evaluation context.

evaluateExpression

protected Object evaluateExpression(String expression,
 Object input)

evaluateExpression

protected <T> T evaluateExpression(String expression,
 Object input,
 Class<T> expectedType)

evaluateExpression

protected Object evaluateExpression(org.springframework.expression.Expression expression,
 Object input)

evaluateExpression

protected <T> T evaluateExpression(org.springframework.expression.Expression expression,
 Class<T> expectedType)

evaluateExpression

protected Object evaluateExpression(org.springframework.expression.Expression expression)

evaluateExpression

protected <T> T evaluateExpression(org.springframework.expression.Expression expression,
 Object input,
 Class<T> expectedType)