org.springframework.integration.jdbc

Class StoredProcPollingChannelAdapter

java.lang.Object

org.springframework.integration.util.AbstractExpressionEvaluator

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

org.springframework.integration.jdbc.StoredProcPollingChannelAdapter

All Implemented Interfaces:

Aware, BeanFactoryAware, BeanNameAware, DisposableBean, InitializingBean, MessageSource<Object>, NamedComponent, IntegrationManagement, MessageSourceMetrics

public class StoredProcPollingChannelAdapter
extends AbstractMessageSource<Object>

A polling channel adapter that creates messages from the payload returned by executing a stored procedure or Sql function. Optionally an update can be executed after the execution of the Stored Procedure or Function in order to update processed rows.

Since:

2.1

Author:

Gunnar Hillert, Artem Bilan, 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 and Description
StoredProcPollingChannelAdapter(StoredProcExecutor storedProcExecutor) Constructor taking StoredProcExecutor.

Method Summary

Modifier and Type	Method and Description
protected Object	doReceive() Execute the select query and the update query if provided.
String	getComponentType()
void	setExpectSingleResult(boolean expectSingleResult) This parameter indicates that only one result object shall be returned from the Stored Procedure/Function Call.

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

buildMessage, destroy, getBeanName, getComponentName, getManagedName, getManagedType, getMessageCount, getMessageCountLong, getOverrides, isCountsEnabled, isLoggingEnabled, receive, registerMetricsCaptor, reset, setBeanName, setCountsEnabled, 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

Constructor Detail

StoredProcPollingChannelAdapter

public StoredProcPollingChannelAdapter(StoredProcExecutor storedProcExecutor)

Constructor taking StoredProcExecutor.

Parameters:

storedProcExecutor - Must not be null.

Method Detail

setExpectSingleResult

public void setExpectSingleResult(boolean expectSingleResult)

This parameter indicates that only one result object shall be returned from the Stored Procedure/Function Call. If set to true, a resultMap that contains only 1 element, will have that 1 element extracted and returned as payload. If the resultMap contains more than 1 element and expectSingleResult is true, then a MessagingException is thrown. Otherwise the complete resultMap is returned as the Message payload. Important Note: Several databases such as H2 are not fully supported. The H2 database, for example, does not fully support the CallableStatement semantics and when executing function calls against H2, a result list is returned rather than a single value. Therefore, even if you set expectSingleResult = true, you may end up with a collection being returned.

Parameters:

expectSingleResult - true if a single result is expected.

doReceive

protected Object doReceive()

Execute the select query and the update query if provided. Returns the rows returned by the select query. If a RowMapper has been provided, the mapped results are returned.

Specified by:

doReceive in class AbstractMessageSource<Object>

Returns:

The value returned.

getComponentType

public String getComponentType()