Package org.springframework.integration.util

Class AbstractExpressionEvaluator

java.lang.Object

org.springframework.integration.util.AbstractExpressionEvaluator

All Implemented Interfaces:

Aware, BeanFactoryAware, InitializingBean

Direct Known Subclasses:

AbstractMessageProcessor, AbstractMessageSource, CollectionArgumentResolver, DefaultFileNameGenerator, ExpressionEvaluatingMessageListProcessor, ExpressionEvaluatingReleaseStrategy, ExpressionEvaluatingSqlParameterSourceFactory, MapArgumentResolver, MessagingMethodInvokerHelper, MethodInvokingMessageListProcessor, PayloadExpressionArgumentResolver, PayloadsArgumentResolver

public abstract class AbstractExpressionEvaluator
extends Object
implements BeanFactoryAware, InitializingBean

Since:

2.0

Author:

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

Field Summary

Fields

Modifier and Type	Field	Description
protected static final ExpressionParser	EXPRESSION_PARSER
protected final LogAccessor	logger

Constructor Summary

Constructors

Constructor	Description
AbstractExpressionEvaluator()

Method Summary

Modifier and Type	Method	Description
final void	afterPropertiesSet()
protected @Nullable Object	evaluateExpression(String expression, Object input)
protected <T> @Nullable T	evaluateExpression(String expression, Object input, @Nullable Class<T> expectedType)
protected @Nullable Object	evaluateExpression(Expression expression)
protected <T> @Nullable T	evaluateExpression(Expression expression, @Nullable Class<T> expectedType)
protected @Nullable Object	evaluateExpression(Expression expression, Object input)
protected <T> @Nullable T	evaluateExpression(Expression expression, Object input, @Nullable Class<T> expectedType)
protected <T> @Nullable T	evaluateExpression(Expression expression, Message<?> message, @Nullable Class<T> expectedType)
protected BeanFactory	getBeanFactory()
protected EvaluationContext	getEvaluationContext()
protected final EvaluationContext	getEvaluationContext(boolean beanFactoryRequired)	Emits a WARN log if the beanFactory field is null, unless the argument is false.
protected MessageBuilderFactory	getMessageBuilderFactory()
protected void	onInit()
void	setBeanFactory(BeanFactory beanFactory)	Specify a BeanFactory in order to enable resolution via @beanName in the expression.
void	setConversionService(ConversionService conversionService)
void	setSimpleEvaluationContext(boolean simpleEvaluationContext)	The flag to indicate that a SimpleEvaluationContext must be used for expression evaluations.

Methods inherited from class java.lang.Object

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

Field Details

logger

protected final LogAccessor logger

EXPRESSION_PARSER

protected static final ExpressionParser EXPRESSION_PARSER

Constructor Details

AbstractExpressionEvaluator

public AbstractExpressionEvaluator()

Method Details

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory)

Specify a BeanFactory in order to enable resolution via @beanName in the expression.

Specified by:

setBeanFactory in interface BeanFactoryAware

getBeanFactory

protected BeanFactory getBeanFactory()

setConversionService

public void setConversionService(ConversionService conversionService)

getMessageBuilderFactory

protected MessageBuilderFactory getMessageBuilderFactory()

setSimpleEvaluationContext

public void setSimpleEvaluationContext(boolean simpleEvaluationContext)

The flag to indicate that a SimpleEvaluationContext must be used for expression evaluations.

Parameters:

simpleEvaluationContext - true to use the SimpleEvaluationContext

Since:

6.4

afterPropertiesSet

public final void afterPropertiesSet()

Specified by:

afterPropertiesSet in interface InitializingBean

getEvaluationContext

protected EvaluationContext getEvaluationContext()

getEvaluationContext

protected final EvaluationContext 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 <T> @Nullable T evaluateExpression(Expression expression,
 Message<?> message,
 @Nullable Class<T> expectedType)

evaluateExpression

protected @Nullable Object evaluateExpression(String expression,
 Object input)

evaluateExpression

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

evaluateExpression

protected @Nullable Object evaluateExpression(Expression expression,
 Object input)

evaluateExpression

protected <T> @Nullable T evaluateExpression(Expression expression,
 @Nullable Class<T> expectedType)

evaluateExpression

protected @Nullable Object evaluateExpression(Expression expression)

evaluateExpression

protected <T> @Nullable T evaluateExpression(Expression expression,
 Object input,
 @Nullable Class<T> expectedType)

onInit

protected void onInit()