Class JpaPollingChannelAdapter

java.lang.Object
org.springframework.integration.util.AbstractExpressionEvaluator
org.springframework.integration.endpoint.AbstractMessageSource<java.lang.Object>
org.springframework.integration.jpa.inbound.JpaPollingChannelAdapter
All Implemented Interfaces:
org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean, org.springframework.integration.core.MessageSource<java.lang.Object>, org.springframework.integration.IntegrationPattern, org.springframework.integration.support.context.NamedComponent, org.springframework.integration.support.management.IntegrationInboundManagement, org.springframework.integration.support.management.IntegrationManagement

public class JpaPollingChannelAdapter
extends org.springframework.integration.endpoint.AbstractMessageSource<java.lang.Object>
Polling message source that produces messages from the result of the provided:
  • entityClass
  • JpQl Select Query
  • Sql Native Query
  • JpQl Named Query
  • Sql Native Named Query
After the objects have been polled, it also possibly to either: executes an update after the select possibly to updated the state of selected records
  • executes an update (per retrieved object or for the entire payload)
  • delete the retrieved object
Since:
2.2
  • Nested Class Summary

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

    org.springframework.integration.support.management.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
    JpaPollingChannelAdapter​(JpaExecutor jpaExecutor)
    Constructor taking a JpaExecutor that provide all required JPA functionality.
  • Method Summary

    Modifier and Type Method Description
    protected java.lang.Object doReceive()
    Use JpaExecutor.poll() to executes the JPA operation.
    java.lang.String getComponentType()  
    protected void onInit()
    Check for mandatory attributes

    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, 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

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

    getIntegrationPatternType
  • Constructor Details

  • Method Details

    • onInit

      protected void onInit()
      Check for mandatory attributes
      Overrides:
      onInit in class org.springframework.integration.util.AbstractExpressionEvaluator
    • doReceive

      protected java.lang.Object doReceive()
      Use JpaExecutor.poll() to executes the JPA operation. If JpaExecutor.poll() returns null, this method will return null. Otherwise, a new Message is constructed and returned.
      Specified by:
      doReceive in class org.springframework.integration.endpoint.AbstractMessageSource<java.lang.Object>
    • getComponentType

      public java.lang.String getComponentType()