DO NOT REPLY [Bug 30180] New: - Exception for assets without an extension

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http://issues.apache.org/bugzilla/show_bug.cgi?id=30180

Exception for assets without an extension

           Summary: Exception for assets without an extension
           Product: Tapestry
           Version: 3.0
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Framework
        AssignedTo: tapestry-dev@jakarta.apache.org
        ReportedBy: nwrk@nwrk.dyndns.org


Tapestry's resource finder throws a StringIndexOutOfBoundsException when
an asset doesn't contains a "." (the search result of 'lastIndexOf' is -1).

The problem is in LocalizedContextResourceFinder.resolve(), and can be fixed by
adding the following avec «int dotx = context.path.lastIndexOf('.')» :
if (dotx < 0) {
    return new LocalizedResource(contextPath, Locale.getDefault());
}

OR (at least) :
if (dotx < 0) {
    throws new ApplicationRuntimeException("Asset has no extension: " +
contextPath);
}

it may also return null, tought. The main problem is that the error report
doesn't link the error with the component specification, but with the first
component who needs the problematic component.

Here the exact Tapestry's error page:

An exception has occurred.

You may continue by restarting the session.

org.apache.tapestry.ApplicationRuntimeException
Unable to instantiate component Home/$ShowError.$RoundedBorder: String index out
of range: -1
component: 
com.alloa.tapestry.jwcs.RoundedBorder$Enhance_225@ba175f[Home/$ShowError.$RoundedBorder]
location: 	context:/WEB-INF/ShowError.html, line 3
 
java.lang.StringIndexOutOfBoundsException
String index out of range: -1
Stack Trace:

    * java.lang.String.substring(String.java:1444)
    *
org.apache.tapestry.util.LocalizedContextResourceFinder.resolve(LocalizedContextResourceFinder.java:57)
    *
org.apache.tapestry.resource.ContextResourceLocation.getLocalization(ContextResourceLocation.java:71)
    * org.apache.tapestry.pageload.PageLoader.findAsset(PageLoader.java:935)
    * org.apache.tapestry.pageload.PageLoader.convert(PageLoader.java:918)
    * org.apache.tapestry.pageload.PageLoader.addAssets(PageLoader.java:838)
    *
org.apache.tapestry.pageload.PageLoader.constructComponent(PageLoader.java:512)
    *
org.apache.tapestry.pageload.PageLoader.createImplicitComponent(PageLoader.java:577)
    *
org.apache.tapestry.BaseComponentTemplateLoader.createImplicitComponent(BaseComponentTemplateLoader.java:295)
    *
org.apache.tapestry.BaseComponentTemplateLoader.process(BaseComponentTemplateLoader.java:237)
    *
org.apache.tapestry.BaseComponentTemplateLoader.process(BaseComponentTemplateLoader.java:172)
    * org.apache.tapestry.BaseComponent.readTemplate(BaseComponent.java:100)
    * org.apache.tapestry.BaseComponent.finishLoad(BaseComponent.java:135)
    *
org.apache.tapestry.pageload.PageLoader.constructComponent(PageLoader.java:520)
    *
org.apache.tapestry.pageload.PageLoader.createImplicitComponent(PageLoader.java:577)
    *
org.apache.tapestry.BaseComponentTemplateLoader.createImplicitComponent(BaseComponentTemplateLoader.java:295)
    *
org.apache.tapestry.BaseComponentTemplateLoader.process(BaseComponentTemplateLoader.java:237)
    *
org.apache.tapestry.BaseComponentTemplateLoader.process(BaseComponentTemplateLoader.java:172)
    * org.apache.tapestry.BaseComponent.readTemplate(BaseComponent.java:100)
    * org.apache.tapestry.BaseComponent.finishLoad(BaseComponent.java:135)
    *
org.apache.tapestry.pageload.PageLoader.constructComponent(PageLoader.java:520)
    * org.apache.tapestry.pageload.PageLoader.loadPage(PageLoader.java:760)
    * org.apache.tapestry.pageload.PageSource.getPage(PageSource.java:153)
    * org.apache.tapestry.engine.RequestCycle.getPage(RequestCycle.java:196)
    * org.apache.tapestry.engine.HomeService.service(HomeService.java:59)
    * org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:872)
    * org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:197)
    * org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:158)
    * javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
...

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