Package org.springframework.integration.endpoint

Class ExpressionEvaluatingMessageSource<T>

java.lang.Object

org.springframework.integration.util.AbstractExpressionEvaluator

org.springframework.integration.endpoint.AbstractMessageSource<T>

org.springframework.integration.endpoint.ExpressionEvaluatingMessageSource<T>

Type Parameters:

T - the expected payload type.

All Implemented Interfaces:

Aware, BeanFactoryAware, BeanNameAware, DisposableBean, InitializingBean, ExpressionCapable, MessageSource<T>, IntegrationPattern, NamedComponent, IntegrationInboundManagement, IntegrationManagement

public class ExpressionEvaluatingMessageSource<T>
extends AbstractMessageSource<T>
implements ExpressionCapable

Since:

2.0

Author:

Mark Fisher, Gary Russell

Nested Class Summary

Nested classes/interfaces inherited from interface org.springframework.integration.support.management.IntegrationManagement

IntegrationManagement.ManagementOverrides

Field Summary

Fields inherited from class org.springframework.integration.util.AbstractExpressionEvaluator

EXPRESSION_PARSER, logger

Fields inherited from interface org.springframework.integration.support.management.IntegrationManagement

METER_PREFIX, RECEIVE_COUNTER_NAME, SEND_TIMER_NAME

Constructor Summary

Constructors

Constructor	Description
ExpressionEvaluatingMessageSource(Expression expression, Class<T> expectedType)

Method Summary

Modifier and Type	Method	Description
T	doReceive()	Subclasses must implement this method.
String	getComponentType()
Expression	getExpression()	Return the primary SpEL expression if this component is expression-based.

Methods inherited from class org.springframework.integration.endpoint.AbstractMessageSource

buildMessage, destroy, getBeanName, getComponentName, getManagedName, getManagedType, getOverrides, isLoggingEnabled, receive, registerMetricsCaptor, setBeanName, setHeaderExpressions, setLoggingEnabled, setManagedName, setManagedType

Methods inherited from class org.springframework.integration.util.AbstractExpressionEvaluator

afterPropertiesSet, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, getBeanFactory, getEvaluationContext, getEvaluationContext, getMessageBuilderFactory, onInit, setBeanFactory, setConversionService

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.integration.support.management.IntegrationManagement

getThisAs, isObserved, registerObservationRegistry

Methods inherited from interface org.springframework.integration.core.MessageSource

getIntegrationPatternType

Constructor Details

ExpressionEvaluatingMessageSource

public ExpressionEvaluatingMessageSource(Expression expression,
 Class<T> expectedType)

Method Details

getComponentType

public String getComponentType()

Specified by:

getComponentType in interface NamedComponent

doReceive

public T doReceive()

Description copied from class: AbstractMessageSource

Subclasses must implement this method. Typically the returned value will be the payload of type T, but the returned value may also be a Message instance whose payload is of type T; also can be AbstractIntegrationMessageBuilder which is used for additional headers population.

Specified by:

doReceive in class AbstractMessageSource<T>

Returns:

The value returned.

getExpression

public Expression getExpression()

Description copied from interface: ExpressionCapable

Return the primary SpEL expression if this component is expression-based.

Specified by:

getExpression in interface ExpressionCapable

Returns:

the expression as a String.