Aurelien Pupier created CAMEL-10509:
---------------------------------------
Summary: ManagedCamelContextMBean - additional namespaces are
removed
Key: CAMEL-10509
URL: https://issues.apache.org/jira/browse/CAMEL-10509
Project: Camel
Issue Type: Bug
Components: camel-core
Affects Versions: 2.18.0
Reporter: Aurelien Pupier
- Use a specific namespace, declared at CamelContext level, in an Xpath
expression of a When
something like:
{noformat}
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="
http://www.osgi.org/xmlns/blueprint/v1.0.0
https://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
http://camel.apache.org/schema/blueprint
http://camel.apache.org/schema/blueprint/camel-blueprint.xsd";>
<!--
The namespace for the camelContext element in Blueprint is
'https://camel.apache.org/schema/blueprint'. Additionally,
we can also define namespace prefixes we want to use them in the XPath
expressions in our CBR.
While it is not required to assign id's to the <camelContext/> and
<route/> elements, it is a good idea
to set those for runtime management purposes (logging, JMX MBeans, ...)
-->
<camelContext id="cbr-example-context"
xmlns="http://camel.apache.org/schema/blueprint";
xmlns:order="http://fabric8.com/examples/order/v7";>
<!--
When this route is started, it will automatically create the
work/cbr/input directory where you can drop the
file that need to be processed.
The <log/> elements are used to add human-friendly business logging
statements. They make it easier to see what the
route is doing.
The <choice/> element contains the content based router. The two
<when/> clauses use XPath to define the criteria
for entering that part of the route. When the country in the XML
message is set to UK or US, the file will be
moved to a directory for that country. The <otherwise/> element
ensures that any file that does not meet the
requirements for either of the <when/> elements will be moved to the
work/cbr/output/others directory.
-->
<route id="cbr-route">
<from id="_from1" uri="file:work/cbr/input"/>
<log id="_log1" message="Receiving order ${file:name}"/>
<choice id="_choice1">
<when id="_when1">
<xpath
id="_xpath1">/order:order/order:customer/order:country = 'UK'</xpath>
<log id="_log2" message="Sending order ${file:name} to the
UK"/>
<to id="_to1" uri="file:work/cbr/output/uk"/>
</when>
<when id="_when2">
<xpath
id="_xpath2">/order:order/order:customer/order:country = 'US'</xpath>
<log id="_log3" message="Sending order ${file:name} to the
US"/>
<to id="_to2" uri="file:work/cbr/output/us"/>
</when>
<otherwise id="_otherwise1">
<log id="_log4" message="Sending order ${file:name} to
another country"/>
<to id="_to3" uri="file:work/cbr/output/others"/>
</otherwise>
</choice>
<log id="_log5" message="Done processing ${file:name}"/>
</route>
</camelContext>
</blueprint>
{noformat}
- Deploy the project
- Using MBean retrieve dumpRoutesAsXml is providing a route without the xml
namespace provided
{noformat}
<?xml version="1.0" encoding="UTF-8"?>
<routes id="cbr-example-context" xmlns="http://camel.apache.org/schema/spring";>
<route customId="true" id="cbr-route">
<from customId="true" id="_from1" uri="file:work/cbr/input"/>
<log customId="true" id="_log1" message="XXXYYY"/>
<choice customId="true" id="_choice1">
<when customId="true" id="_when1">
<xpath id="_xpath1">/order:order/order:customer/order:country =
'UK'</xpath>
<log customId="true" id="_log2" message="Sending order
${file:name} to the UK"/>
<to customId="true" id="_to1" uri="file:work/cbr/output/uk"/>
</when>
<when customId="true" id="_when2">
<xpath id="_xpath2">/order:order/order:customer/order:country =
'US'</xpath>
<log customId="true" id="_log3" message="Sending order
${file:name} to the US"/>
<to customId="true" id="_to2" uri="file:work/cbr/output/us"/>
</when>
<otherwise customId="true" id="_otherwise1">
<log customId="true" id="_log4" message="Sending order
${file:name} to another country"/>
<to customId="true" id="_to3"
uri="file:work/cbr/output/others"/>
</otherwise>
</choice>
<log customId="true" id="_log5" message="Done processing ${file:name}"/>
</route>
</routes>
{noformat}
- Then use addOrUpdateRoutesFromXml to upload the exact same xml, you will get
exceptions when the When code is invoked:
{noformat}
Message History
---------------------------------------------------------------------------------------------------------------------------------------
RouteId ProcessorId Processor
Elapsed (ms)
[cbr-route ] [cbr-route ] [file://work/cbr/input
] [ 1]
[cbr-route ] [_log1 ] [log
] [ 0]
[cbr-route ] [_choice1 ] [when[xpath{XPath:
/order:order/order:customer/order:country = 'UK'}]choice[whe] [ 1]
Stacktrace
---------------------------------------------------------------------------------------------------------------------------------------
org.apache.camel.builder.xml.InvalidXPathExpression: Invalid xpath:
/order:order/order:customer/order:country = 'UK'. Reason:
javax.xml.xpath.XPathExpressionException:
com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception: Prefix
must resolve to a namespace: order
at
org.apache.camel.builder.xml.XPathBuilder.evaluateAs(XPathBuilder.java:769)
at
org.apache.camel.builder.xml.XPathBuilder.matches(XPathBuilder.java:155)
at
org.apache.camel.processor.FilterProcessor.matches(FilterProcessor.java:65)
at
org.apache.camel.processor.ChoiceProcessor.process(ChoiceProcessor.java:93)
at
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:468)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:196)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:121)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:83)
at
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:196)
at
org.apache.camel.component.file.GenericFileConsumer.processExchange(GenericFileConsumer.java:454)
at
org.apache.camel.component.file.GenericFileConsumer.processBatch(GenericFileConsumer.java:226)
at
org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:190)
at
org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:175)
at
org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:102)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.xml.xpath.XPathExpressionException:
com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception: Prefix
must resolve to a namespace: order
at
com.sun.org.apache.xpath.internal.jaxp.XPathImpl.compile(XPathImpl.java:400)
at
org.apache.camel.builder.xml.XPathBuilder.createXPathExpression(XPathBuilder.java:958)
at
org.apache.camel.builder.xml.XPathBuilder.evaluateAs(XPathBuilder.java:767)
... 21 more
Caused by:
com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception: Prefix
must resolve to a namespace: order
at
com.sun.org.apache.xpath.internal.compiler.XPathParser.errorForDOM3(XPathParser.java:657)
at
com.sun.org.apache.xpath.internal.compiler.Lexer.mapNSTokens(Lexer.java:642)
at
com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:269)
at
com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:100)
at
com.sun.org.apache.xpath.internal.compiler.XPathParser.initXPath(XPathParser.java:114)
at com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:180)
at com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:268)
at
com.sun.org.apache.xpath.internal.jaxp.XPathImpl.compile(XPathImpl.java:392)
{noformat}
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