Where is camelContext? XSD

[jucaro]

Hello all,

activemq.apache.org vs. camel.apache.org

Everytime I generate a camel context, either from an eip or with maven, and in every example, I see that the <camelContext> is defined in the http://activemq.apache.org/camel/schema/spring/camel-spring.xsd XSD. However, eclipse doesn't seems to find it and in fact when I try to run it, it doesn't works. I get the following errors:

1.    cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'camelContext'.

2.    TargetNamespace.1: Expecting namespace 'http://activemq.apache.org/camel/schema/spring', but the target namespace of the schema document is 'http://camel.apache.org/schema/spring'.

If I switch the xsi:schemaLocation to http://camel.apache.org/schema/spring, eclipse stops worring. But it still doesn't work. I get the next errors:

1.    schema_reference.4: Failed to read schema document 'http://camel.apache.org/schema/spring/camel-spring.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.

2.    cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'camelContext'.

I am attaching the two files I am trying to run.

Question:

Am I missing a dependency?

Why do I find tutorials and documentation with both options?

Thanks to all,

Juan

Environment:

eclipse  3.4.1camel 1.5.4.0-fuse

activemq 5.2.0.2-fuse

fuse Integration designer 1.1.0

maven 2.0.8

java jdk1.6.0_10

Edited by: jucaro on Mar 20, 2009 2:20 PM

[davsclaus]

The namespace for Apache Camel has changed because Apache Camel graduated as a Apache Top Level Project a few months ago.

That is why there are two namespaces in examples, and in the Camel wiki documentation.

Camel 1.x still uses and will only use the old location name, eg: activemq.apache.org/camel

Camel 2.0 and onwards will use the new location name: camel.apache.org

As the Camel wiki documentation examples is often snippets from real unit tests from the SVN trunk, its thus based on Camel 2.0.

In your case the old location should be used for Camel 1.x.

I am not an Eclipse fanatic so I dont know how to configure XSD locations. In IDEA you just press ctrl + space like autocomplete for namespaces it does not understand yet. Maybe there is something like that in Eclipse.

[jucaro]

Hi!

Thanks for the explanation.

I found that the project will be "Camel 1.x" ready if I create the project using the camel-archetype-activemq (here is how) maven archetype, it it is helpful for someone else.

bye,

Juan

Edited by: jucaro on Mar 20, 2009 4:43 PM

[prossman]

... I just stumbled across the same thing.

It turns out that if you go to http://activemq.apache.org/camel/schema/spring/camel-spring.xsd, there is a re-direct to http://camel.apache.org/schema/spring/camel-spring.xsd.

However, the schema located at the latter doesn't have target namespace 'http://activemq.apache.org/camel/schema/spring', but uses target namespace 'http://camel.apache.org/schema/spring'.

So:

If you're using archetype servicemix-camel-service-unit with archetype version=2010.01.0-fuse-02-00, you're getting a camel-context.xml file that declares a namespace that is undefined in the schema it references.

[davsclaus]

The activemq namespace is for Camel 1.x

The camel namespace is for Camel 2.x.

So use the one that fits your version of Camel.

[prossman]

Yes, I understood that.

Nevertheless, Eclipse will give you a validation error for the camel-context.xml file if your xsi:schemaLocation attribute reads:

xsi:schemaLocation="

       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd

       http://activemq.apache.org/camel/schema/spring http://activemq.apache.org/camel/schema/spring/camel-spring.xsd"

This is because when retrieving the schema from this URL, it ends up at http://camel.apache.org/schema/spring/camel-spring.xsd - where you have a schema with targetNamespace="http://camel.apache.org/schema/spring".

[prossman]

Solution:

Change...

  xsi:schemaLocation="

       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd

       http://activemq.apache.org/camel/schema/spring http://activemq.apache.org/camel/schema/spring/camel-spring.xsd"

... to...

  xsi:schemaLocation="

       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd

       http://activemq.apache.org/camel/schema/spring http://camel.apache.org/schema/spring/camel-spring-1.6.3.xsd"