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https://issues.apache.org/jira/browse/CAMEL-6807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen updated CAMEL-6807:
-------------------------------
Fix Version/s: (was: 2.11.3)
2.11.4
> Message headers with uppercase letters not matched by jxpath
> ------------------------------------------------------------
>
> Key: CAMEL-6807
> URL: https://issues.apache.org/jira/browse/CAMEL-6807
> Project: Camel
> Issue Type: Bug
> Affects Versions: 2.10.4
> Environment: JXPath used as Expression language
> Reporter: Petr Janata
> Assignee: Hadrian Zbarcea
> Priority: Minor
> Fix For: 2.11.4, 2.12.3, 2.13.0
>
> Attachments: CaseInsensitiveMapPropertyHandler.java
>
>
> {{DefaultMessage}} uses {{CaseInsensitiveMap}} for storing headers. If header
> name contains uppercase characters, then jxpath expression with correct case
> will not match.
> E.g. header named _fooBarBaz_ on "in" message will not be matched by
> following jxpath expression:
> {code:xml}
> <jxpath>/in/headers/fooBarBaz = something</jxpath>
> {code}
> JXPath evaluates nodes that match the fooBarBaz name and uses the keySet() to
> obtain candidates. The problem is that CaseInsensitiveMap.keySet() returns
> the converted internal keys, instead of the original keys.
> *Is it possible to override the keySet() method of CaseInsensitiveMap to
> return the original keys?* Then a user will not be unpleasantly surprised
> that his key is not in the key set.
> {code:title=CaseInsensitiveMap.java|borderStyle=solid}
> @Override
> public Set<String> keySet()
> {
> return originalKeys.values();
> }
> {code}
> There are two workarounds possible but neither of them is nice in my eyes.
> # use only lowercase header names
> # register custom DynamicPropertyHandler in JXPath
> Ad 1. this probably wasn't the intention. User must rely on implementation of
> private method {{CaseInsensitiveMap.assembleKey()}}. This then defeats the
> purpose of case insensitiveness.
> Ad 2. custom property handler must be registered via
> {{JXPathIntrospector.registerDynamicClass()}} "in the start", e.g. before
> anybody calls {{JXPathIntrospector.getBeanInfo()}}. In our projects it was
> enough to declare an extra eagerly-instantiated singleton Spring bean.
> {code:xml}
> <bean class="CaseInsensitiveMapPropertyHandler"
> init-method="init"
> autowire-candidate="false"
> lazy-init="false" />
> {code}
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