When I reboot my database while my application is running, JPA components cannot reconnect automatically.
2017-02-09 17:45:08,400 ERROR o.h.e.j.spi.SqlExceptionHelper(131) - Connection closed. - [Camel (camel-1) thread #99 - jpa://com.toto.Toto ]
But still I am able to execute SQL request with spring-data in my CXF routes.
My datasource definition in context.xml :
<!-- JDBC connection -->
<Resource name="jdbc/oracle"
auth="Container"
type="javax.sql.DataSource"
username="toto"
password="toto"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@toto:1568:SID"
maxTotal="100"
maxIdle="10"
testOnBorrow="true"
validationQuery="select 1 from dual"/>
And here is what my JPA component looks like :
@Component
public class TotoPollerRoute extends RouteBuilder {
private final String uri;
private static final String POLLING_REQUEST = "select tt from Toto tt where tt.key = 1";
public TotoPollerRoute() {
super();
final StringBuilder uriBuilder = new StringBuilder();
uriBuilder.append("jpa://");
uriBuilder.append(TotoPollerRoute.class.getName());
uriBuilder.append("?");
uriBuilder.append("consumeDelete=false");
uriBuilder.append("&consumeLockEntity=true");
uriBuilder.append("&consumer.SkipLockedEntity=true");
uriBuilder.append("&maximumResults=10");
uriBuilder.append("&consumer.query=");
uriBuilder.append(POLLING_REQUEST);
this.uri = uriBuilder.toString();
}
@Override
public void configure() {
// @formatter:off
from(uri)
.to("TotoMainRoute");
// @formatter:on
}
}
Any idea ?
After some deep debugging I finally figured out my JPA components weren't using the EntityManagerFactory declared in the Spring context.
Two ways to solve that :
Modify the JPA uri on each JPA component and add the sharedEntityManager option :
private final String uri = "jpa://TotoPollerRoute?consumeDelete=false" + "&consumeLockEntity=true" + "&consumer.SkipLockedEntity=true" + "&maximumResults=10" + "&sharedEntityManager=true" + "&joinTransaction=false" + "&consumer.query=select tt from Toto tt where tt.key = 1";
Instanciate JPA component in Spring :
@Bean public JpaComponent jpa() { final JpaComponent jpa = new JpaComponent(); jpa.setSharedEntityManager(true); jpa.setJoinTransaction(false); return jpa; }
Try specifying the following attributes
validationInternal="30000"
testWhileIdle="true"
testOnReturn="false"
In addition to the following which you have declared:
testOnBorrow="true"
validationQuery="select 1 from dual"
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