Am 18.11.2013 20:21, schrieb Lukasz Lenart:
2013/11/18 Volker Krebs <volker.kr...@abas.de>:
Maybe something for the Migration Guide.
Accessing a map has changed a bit.
With 2.3.15.3 the following did work:
<s:property value="#item.content[number]" />
With 2.3.16 you have to write:
<s:property value="#item.content['number']" />
You mean that the 'numer' is a static key not an expression (resolved
to getNumber())? Anyway, thus is strange.
Regards
Ok, got it.
<s:if test="#item.content[key] != null">
</s:if>
In 2.3.15.3 it returns true.
In 2.3.16 it returns false.
This is because I was accessing the map wrong (arghhh ... OGNL, after so
many years still unhandleable)
In 2.3.15.3 a new map entry with key null and value '' is created
somewhere in the struts2 stack. And #item.content[key] evaluates to
#item.content[null] which returns ''.
In 2.3.16 the new map entry is not created. And #item.content[key]
always returns null without creating a new map entry.
Regards.
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