[CXF-6567] Allow alternate wildcard in Camel CXF Transport for Blueprint

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.5
• Component/s: Core

Environment

ServiceMix 5.4.1

• Estimated Complexity: Unknown
• Flags: Patch
• Assignee: Akitoshi Yoshida
• Reporter: metatech
• Created: 27/Aug/15 15:15
• Updated: 12/Jan/17 06:39

Description

We are trying to use Camel CXF Transport within Blueprint.
We followed the intructions on this page :
http://camel.apache.org/camel-transport-for-cxf.html

However, when defining a camel destination with an ID containing an asterisk and dot :
<camel:destination id="*.camel-destination" camelContextId="camel1" />
Blueprint XSD validation fails with the exception below [1].

In Spring, the attribute "name" is defined as a "xs:string", whereas in Blueprint, the attribute "id" is defined as "NCName" (non-colonized name), which disallows "asterisk".

Here is a patch to support an alternate wildcard which uses only characters allowed ("_WILDCARD_") to replace the asterisk ("*").

<camel:destination id="_WILDCARD_.camel-destination" camelContextId="camel1" />

[EDIT] : another solution would be to add explicitly the attribute "name" (defined as xs:string) in the following XSD, to mimic Spring behaviour :
camel-cxf-transport/src/main/resources/schema/blueprint/camel.xsd

2015-08-11 17:10:16,014 [int Extender: 1] ERROR BlueprintContainerImpl         - Unable to start blueprint container for bundle CxfTransportBlueprintTest 
org.osgi.service.blueprint.container.ComponentDefinitionException: Unable to validate xml 
        at org.apache.aries.blueprint.parser.Parser.validate(Parser.java:288) 
        at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:313) 
        at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:261) 
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) 
        at java.util.concurrent.FutureTask.run(FutureTask.java:262) 
        at org.apache.aries.blueprint.container.ExecutorServiceWrapper.run(ExecutorServiceWrapper.java:106) 
        at org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run(DiscardableRunnable.java:48) 
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) 
        at java.util.concurrent.FutureTask.run(FutureTask.java:262) 
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) 
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) 
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
        at java.lang.Thread.run(Thread.java:744) 
Caused by: org.xml.sax.SAXParseException; cvc-datatype-valid.1.2.1: '*.camel-destination' is not a valid value for 'NCName'. 
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198) 
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134) 
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:437) 
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368) 
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:325) 
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:458) 
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3237) 
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processOneAttribute(XMLSchemaValidator.java:2832) 
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processAttributes(XMLSchemaValidator.java:2769) 
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:2056) 
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:746) 
        at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.beginNode(DOMValidatorHelper.java:277) 
        at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.validate(DOMValidatorHelper.java:244) 
        at com.sun.org.apache.xerces.internal.jaxp.validation.DOMValidatorHelper.validate(DOMValidatorHelper.java:190) 
        at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl.validate(ValidatorImpl.java:109) 
        at javax.xml.validation.Validator.validate(Validator.java:124) 
        at org.apache.aries.blueprint.parser.Parser.validate(Parser.java:285) 
        ... 13 more 

http://camel.465427.n5.nabble.com/Camel-CXF-Transport-works-within-Blueprint-only-when-XSD-validation-is-disabled-td5770593.html#a5771007