[jira] Commented: (TAP5-592) An error occurs when parsing a template with a Block component as root component.

["Howard M. Lewis Ship (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TAP5-592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12700359#action_12700359 ] 

Howard M. Lewis Ship commented on TAP5-592:
-------------------------------------------

Workaround: use a <t:content> or <t:container> element, place the <t:block> inside.

> An error occurs when parsing a template with a Block component as root component.
> ---------------------------------------------------------------------------------
>
>                 Key: TAP5-592
>                 URL: https://issues.apache.org/jira/browse/TAP5-592
>             Project: Tapestry 5
>          Issue Type: Bug
>          Components: tapestry-core
>    Affects Versions: 5.0.18
>            Reporter: Briac Pilpré
>            Priority: Minor
>
> When trying to parse a component description containing a single Block declaration, Tapestry throws an exception: 
> org.apache.tapestry5.ioc.internal.util.TapestryException
> Failure parsing template classpath:my/app/components/HelloBlock.tml: Element <block> does not support an attribute named ''. The only allowed attribute name is 'id'.
> <?xml version="1.0"?>
> <t:block xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd" t:id="helloBlock">
>     Hello.
> </t:block>
> The TemplateParserImpl.findSingleParameter allows only a single attribute but the xmlns:t attribute is taken into account. I guess we could patch this correct by skipping xmlns attributes (like the xml:space attribute is skipped).
> Partial Stack trace
>         * org.apache.tapestry5.internal.services.TemplateParserImpl.findSingleParameter(TemplateParserImpl.java:500)
>         * org.apache.tapestry5.internal.services.TemplateParserImpl.startBlock(TemplateParserImpl.java:445)
>         * org.apache.tapestry5.internal.services.TemplateParserImpl.startTapestryElement(TemplateParserImpl.java:396)
>         * org.apache.tapestry5.internal.services.TemplateParserImpl.startElement(TemplateParserImpl.java:352)
>         * org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)

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