how to check a property inside of a exchange property

[ch...@innogy.com]

Hi there,

I have an object of a class "Foo" in an exchange property named "the-foo". The "Foo" class has an int property "counter" with a getter. In my route, I have to check with a choice- and a when-clause if this counter is greater than zero, then proceed with next step #1, otherwise proceed with next step #2. I don't see how I could get the counter property.

simple("${exchangeProperty.the-foo.counter}")

did not work.

The only solution I found was to set the exchange property into the body and then check the counter there, but this is not an ideal solution.

Any help is appreciated.

Kind regards,
Christian Jacob

Innogy SE
Retail IT
Integration and Digital Solutions (AFS-IGI)
Rellinghauser Str. 37
45128 Essen
T intern: 70-20581
T extern: +49 (0)201 12 20582
T mobil: +49 (0)1622843981
Fax: +49 (0)201 12 24796
mailto: christian.jacob@innogy.com
----------------------------------------------------------------
innogy SE
Vorsitzender des Aufsichtsrates: Dr. Erhard Schipporeit
Vorstand: Uwe Tigges (Vorsitzender), Dr. Hans Buenting,
Dr. Bernhard Guenther, Martin Herrmann, Hildegard Mueller
Sitz der Gesellschaft: Essen, Eingetragen beim Amtsgericht Essen,
Handelsregister-Nr. HRB 27091, USt-IdNr. DE304171711

Re: how to check a property inside of a exchange property

[Quinn Stevenson <qu...@pronoia-solutions.com>]

I’m assuming the simple block you shared is for the when clause, but it doesn’t have a comparison - did you miss something? 

I put together a quick test that shows one way to do this
public class ScratchTest extends CamelTestSupport {
  static final String SOURCE_URI = "direct://source";
  static final String WHEN_TARGET = "mock://when-target";
  static final String OTHERWISE_TARGET = "mock://otherwise-target";

  static final String EXCHANGE_PROPERTY_KEY = "the-foo";

  Exchange exchange;

  @EndpointInject(uri = WHEN_TARGET)
  MockEndpoint whenTarget;

  @EndpointInject(uri = OTHERWISE_TARGET)
  MockEndpoint otherwiseTarget;

  @Override
  protected void doPostSetup() throws Exception {
    super.doPostSetup();

    template.setDefaultEndpointUri(SOURCE_URI);

    exchange = createExchangeWithBody("The Body");
  }

  @Override
  protected RoutesBuilder createRouteBuilder() throws Exception {
    return new RouteBuilder() {
      @Override
      public void configure() throws Exception {
        from(SOURCE_URI)
            .log("Property value is ${exchangeProperty." + EXCHANGE_PROPERTY_KEY + ".counter}")
            .choice()
              .when(simple("${exchangeProperty." + EXCHANGE_PROPERTY_KEY + ".counter} > 0"))
                .to(WHEN_TARGET)
              .otherwise()
                .to(OTHERWISE_TARGET)
            .end();
      }
    };
  }

  @Test
  public void testCounterGreaterThanZero() throws Exception {
    whenTarget.expectedMessageCount(1);
    otherwiseTarget.expectedMessageCount(0);

    exchange.setProperty(EXCHANGE_PROPERTY_KEY, new CounterBean(5));

    template.send(exchange);

    assertMockEndpointsSatisfied();
  }

  @Test
  public void testCounterLessThanZero() throws Exception {
    whenTarget.expectedMessageCount(0);
    otherwiseTarget.expectedMessageCount(1);

    exchange.setProperty(EXCHANGE_PROPERTY_KEY, new CounterBean(-5));

    template.send(exchange);

    assertMockEndpointsSatisfied();
  }

  @Test
  public void testCounterEqualToZero() throws Exception {
    whenTarget.expectedMessageCount(0);
    otherwiseTarget.expectedMessageCount(1);

    exchange.setProperty(EXCHANGE_PROPERTY_KEY, new CounterBean(0));

    template.send(exchange);

    assertMockEndpointsSatisfied();
  }
}

And here’s the source for the CounterBean
public class CounterBean {
  int counter;

  public CounterBean(int counter) {
    this.counter = counter;
  }

  public int getCounter() {
    return counter;
  }

  public void setCounter(int counter) {
    this.counter = counter;
  }
}

HTH

> On Feb 23, 2018, at 2:28 AM, christian.jacob@innogy.com wrote:
> 
> Hi there,
> 
> I have an object of a class "Foo" in an exchange property named "the-foo". The "Foo" class has an int property "counter" with a getter. In my route, I have to check with a choice- and a when-clause if this counter is greater than zero, then proceed with next step #1, otherwise proceed with next step #2. I don't see how I could get the counter property.
> 
> simple("${exchangeProperty.the-foo.counter}")
> 
> did not work.
> 
> The only solution I found was to set the exchange property into the body and then check the counter there, but this is not an ideal solution.
> 
> Any help is appreciated.
> 
> Kind regards,
> Christian Jacob
> 
> Innogy SE
> Retail IT
> Integration and Digital Solutions (AFS-IGI)
> Rellinghauser Str. 37
> 45128 Essen
> T intern: 70-20581
> T extern: +49 (0)201 12 20582
> T mobil: +49 (0)1622843981
> Fax: +49 (0)201 12 24796
> mailto: christian.jacob@innogy.com
> ----------------------------------------------------------------
> innogy SE
> Vorsitzender des Aufsichtsrates: Dr. Erhard Schipporeit
> Vorstand: Uwe Tigges (Vorsitzender), Dr. Hans Buenting,
> Dr. Bernhard Guenther, Martin Herrmann, Hildegard Mueller
> Sitz der Gesellschaft: Essen, Eingetragen beim Amtsgericht Essen,
> Handelsregister-Nr. HRB 27091, USt-IdNr. DE304171711