[jira] Commented: (TAP5-134) Recursive Components cause heap space overflow

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

    [ https://issues.apache.org/jira/browse/TAP5-134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12640215#action_12640215 ] 

Howard M. Lewis Ship commented on TAP5-134:
-------------------------------------------

WebObjects is also slow and chews memory like candy!  Tapestry initializes the entire component tree when a page if first loaded.  The page structure is fixed at that point, so that pages can be pooled and shared between requests.

> Recursive Components cause heap space overflow
> ----------------------------------------------
>
>                 Key: TAP5-134
>                 URL: https://issues.apache.org/jira/browse/TAP5-134
>             Project: Tapestry 5
>          Issue Type: Bug
>         Environment: MacOSX 10.4.8, Eclipse 3.2.1
>            Reporter: Randy Leonard
>
> Embedding a recursive reference to a component within an html template causes a stack overflow.  Example menu component is as follows:
> <tr xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
> 	<td>
> 		<t:comp type="Iff" test="prop:menuItem.isSelected">
> 			<b>${menuItem.name}</b>
> 			<t:comp type="Iff" test="prop:menuItem.containsSubMenu">
> 				<t:comp t:type="menu" menuHierarchy="menuItem.subMenu"></t:comp>
> 			</t:comp>
> 		</t:comp>
> 		<t:comp type="Iff" test="prop:menuItem.isSelected" negate="true">
> 			<a t:type="PageLink" page="prop:menuItem.pageName">${menuItem.name}</a>
> 		</t:comp>
> 	</td>
> </tr>
> The menu component works fine if the recursive if the recursive reference is removed.  The error seems to take place at startup, not at render time.
> Error message displayed in browser is as follows:
> A runtime exception has occurred.
> org.apache.tapestry.ioc.internal.util.TapestryException
> Could not convert 'menuItem.name' into a component parameter binding: Java heap space
> location
> classpath:org/example/hilo/components/MenuCell.html, line 4, column 23
> org.apache.tapestry.ioc.internal.util.TapestryException
> Java heap space
> location
> classpath:org/example/hilo/components/MenuCell.html, line 4, column 23
> java.lang.OutOfMemoryError
> Java heap space

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