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https://issues.apache.org/jira/browse/CAMEL-4077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen resolved CAMEL-4077.
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Resolution: Fixed
> 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
> Assignee: 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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