The squeeze happens in
org.apache.tapestry.components.ForBean#getStringRepFromValue() which is
called from
org.apache.tapestry.components.ForBean.StoreSourceDataIterator#next()
which is called from the ForBean renderComponent() method.
Ciao
JPB
Jean-Philippe Bouchard wrote:
Hi Howard,
I don't need to squeeze it. I just happen to iterate a list ContextAsset
in a "For" component rendered in a form. Tapestry tries to squeeze it by
adding it to a form hidden component. When the component is not used in
a form, it works perfectly.
This is the HTML page for the component:
<span jwcid="@Any" title="ognl:model.rating">
<span jwcid="@For" source="ognl:model.stars" value="ognl:star"
><img border="0" jwcid="@Image" image="ognl:star"
alt="star"/></span>
</span>
mode.stars is an array of IAsset objects which are taken from the jwc.
This is the jwc:
<component-specification allow-body="no" allow-informal-parameters="no">
<asset name="star" path="images/pink-star.gif"/>
<asset name="stardimmed" path="images/pink-star-dim.gif"/>
<asset name="starhalf" path="images/pink-star-half.gif"/>
<property name="star"/>
</component-specification>
Howard Lewis Ship wrote:
This is not a bug per-se, it could be an enhancement. There's nothing
in the description of ContextAsset to indicate that it is supposed to
be serializable and, generally, only serializable objects can be
"squeezed" into a URL.
It's possible to extend the DataSqueezer, via HiveMind contributions,
to inform it about how to squeeze additonal types of objects, so you
could get it to squeeze assets (with just a bit of work).
I do wonder why you needed to squeeze it? At most, you should be
squeezing the asset's id.
On 2/22/07, Jean-Philippe Bouchard
<[EMAIL PROTECTED]> wrote:
Hi,
I have a component which iterates over an array of context assets
(images) using the "For" component. This component works fine, except
when put it in a form.
In a form, it fails with "java.lang.IllegalArgumentException: Could not
find a strategy instance for class
org.apache.tapestry.asset.ContextAsset". The problem seems to be that
when The ForBean renders, its StoreSourceDataIterator.next() is trying
to insert a hidden value in the form. The method called is
ForBean.getStringRepFromValue() which fails on DataSqueezer.squeeze()
method with the exception previously mentioned. The reason for the
failure is that no squeeze strategy can be found for the ContextAsset
object.
Here is the relevant part of the stackstrace:
Caused by: java.lang.IllegalArgumentException: Could not find a strategy
instance for class org.apache.tapestry.asset.ContextAsset.
at
org.apache.hivemind.lib.util.StrategyRegistryImpl.searchForAdaptor(StrategyRegistryImpl.java:176)
at
org.apache.hivemind.lib.util.StrategyRegistryImpl.getStrategy(StrategyRegistryImpl.java:74)
at
org.apache.tapestry.util.io.DataSqueezerImpl.squeeze(DataSqueezerImpl.java:125)
at
$DataSqueezer_110eadc1cb3.squeeze($DataSqueezer_110eadc1cb3.java)
at
org.apache.tapestry.components.ForBean.getStringRepFromValue(ForBean.java:397)
at
org.apache.tapestry.components.ForBean$StoreSourceDataIterator.next(ForBean.java:365)
at
org.apache.tapestry.components.ForBean.renderComponent(ForBean.java:125)
I'm not sure where the problem lies but I "fixed" it by unrolling my for
loop (there are only and always 5 elements in it).
Ciao
JPB
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