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From "Claus Ibsen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAMEL-4077) XML DSL - Validate <route> has a <from> on startup
Date Thu, 09 Jun 2011 08:53:59 GMT
XML DSL - Validate <route> has a <from> on startup
--------------------------------------------------

                 Key: CAMEL-4077
                 URL: https://issues.apache.org/jira/browse/CAMEL-4077
             Project: Camel
          Issue Type: Improvement
          Components: camel-core
    Affects Versions: 2.7.2
            Reporter: Claus Ibsen
            Priority: Minor
             Fix For: 2.8.0


We should add validation that a <route> has a <from> as input source. If there
is no such, you may get a stacktrace about no such element.

{code:xml}
    <route>
      <to uri="log:line"/>
      <process ref="myProcessor"/>
      <to uri="mock:line"/>
    </route>
{code}

{code}
Caused by: java.util.NoSuchElementException
	at java.util.AbstractList$Itr.next(AbstractList.java:350)
	at org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRoutes(DefaultCamelContext.java:1524)
	at org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:1436)
	at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:1326)
	at org.apache.camel.spring.SpringCamelContext.doStart(SpringCamelContext.java:164)
	at org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:67)
	at org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:54)
	at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:1304)
	at org.apache.camel.spring.SpringCamelContext.maybeStart(SpringCamelContext.java:208)
	at org.apache.camel.spring.SpringCamelContext.onApplicationEvent(SpringCamelContext.java:101)
	... 29 more
{code}

The validation should be in camel-core so we ensure this is checked regardless how the route
definition has been created.

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