Dear List,
in an Applications Session, a NSMutableDictionary object is used for
"caching" pages. Everytime the "pageWithName" method is called, the
dictionary is queried in order to determine if the requested page
does
already exist, if true the existing page is returned, else a new
one is
generated and stored in the dictionary. This is made in
Application.java
by overriding the "pageWithName" method:
public WOComponent pageWithName(String aName, WOContext aContext) {
Object result = null;
if ( aContext.hasSession() ) result =
((NSMutableDictionary)((Session)aContext.session()).cachedPages
()).objectForKey(aName);
if ( result == null ) {
result = super.pageWithName(aName, aContext);
if ( aContext.hasSession() ) if ( aName != null )
((NSMutableDictionary)((Session)aContext.session()).cachedPages
()).setObjectForKey(result,
aName);
}
return (WOComponent)result;
}
This works with one exception. Making changes on Enterprise
Objects is
not possible in every case. Saving changes works, if always the same
object is changed but not if two different objects are changed
(changing
the first, saving the changes, then changing the second and saving
the
changes). But if making changes on a object, saving it, and then
revert
the changes (to the same state as before changing it the first
time),
making changes on other objects is possible.
As mentioned in the WO API Reference, for pages being stored in a
variable the "ensureAwakeInContext" method has to be called, but
this
has no effect. Same if refreshing the objects in the default editing
context ("refreshAllObjects", "refaultAllObjects") which is used on
all
pages.
Any suggestions or other hints would be appreciated.
Regards
Andri
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