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https://issues.apache.org/jira/browse/TAPESTRY-1924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12572083#action_12572083
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Kalin Krustev commented on TAPESTRY-1924:
-----------------------------------------

Yes, throwing an exception also seems good and removing toURL from 
org.apache.tapestry.ioc.Resource is also going to make interface simpler. But 
when I looked the source it seemed simpler to keep toURL. Howard, it's your 
decision if it will be kept, my issue was for supporting resources coming from 
stream.

> Allow for templates coming from stream
> --------------------------------------
>
>                 Key: TAPESTRY-1924
>                 URL: https://issues.apache.org/jira/browse/TAPESTRY-1924
>             Project: Tapestry
>          Issue Type: Improvement
>          Components: tapestry-core, tapestry-ioc
>    Affects Versions: 5.0.6
>            Reporter: Kalin Krustev
>
> In the current version Tapestry parses templates coming from java.net.URL. If 
> the template is not in the filesystem (for example coming from database), it 
> is more easier to implement this if Tapestry can parse the template coming 
> from stream.
> My suggestion is to extend the org.apache.tapestry.ioc.Resource interface 
> with one more method: 
> InputStream toStream();
> which will be called insted of calling toURL().openStream() when parsing the 
> template.
> If this interface is extended in this way, Tapestry should expect 
> org.apache.tapestry.ioc.Resource.toURL() to return null even when the 
> resource exists(but does not have an URL).

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