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

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.2.2
• Fix Version/s: 5.3
• Component/s: tapestry-core
• Assignee: Howard Lewis Ship
• Reporter: Howard Lewis Ship
• Created: 27/Oct/10 23:15
• Updated: 17/Oct/11 20:27
• Resolved: 17/Oct/11 20:01

Description

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.