[jira] Created: (TAP5-1329) Tapestry allows a template to define the same extension-point id twice, which causes difficult to understand duplicate component id exceptions

Wed, 27 Oct 2010 16:16:45 -0700 

Tapestry allows a template to define the same extension-point id twice, which 
causes difficult to understand duplicate component id exceptions
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                 Key: TAP5-1329
                 URL: https://issues.apache.org/jira/browse/TAP5-1329
             Project: Tapestry 5
          Issue Type: Bug
          Components: tapestry-core
    Affects Versions: 5.2.2
            Reporter: Howard M. Lewis Ship


Probably dates back to 5.1.

If the parent template looks like:

<t:extension-point id="foo"/> ... <t:extension-point id="foo"/> ...

and the child template extends:

<t:replace id="foo"> <t:form t:id="myForm"> ... </t:replace>

then the exception is that myForm is a duplicate embedded component id.

Effectively, Tapestry has "pasted" the <t:form ...> into two places of the 
parent template.

Tapestry should have thrown an exception when parsing the parent template.

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