Brian Doherty wrote:
Hi,
Yes, I understand what you are saying here. I do not understand the
following. If I use instance variables to pass the storeLocation into my
component it works fine. storeLocation is passed through to the
component and getLocationOfStore() contains the location I passed in
from the page. If however I use an abstract property to pass the
storeLocation into my component, storeLocation is not passed into the
component ie. getStoreLocation() is null
where do you set your storeLocation property ( or, why shouldn't it be
null ) ?
Cheers,
Ron
Thanks
Brian
Ron Piterman wrote:
:)
Tapestry uses a pool to store page instances. While rendering it is
safe to use instance variables but you have to make sure they are
reset, preferrably in either pageDetached or pageAttached events.
If you don't reset them, information can be shared between many users
of your site, but not by all, since they might get another instance
from the pool.
When using abstract properties, tapestry does the initialization work
for you.
Hope that helps,
Ron
Brian Doherty wrote:
Sorry. What I mean by does not work is that getLocationOfStore() in
my component is null after the component renders.
When I use the updated code below the storeLocation is passed through
to the component and getLocationOfStore() contains the location I
passed in from the page.
It does not like it when I use abstract getters and setters but I
dont understand why.
Thanks
Brian
Ron Piterman wrote:
Brian Doherty wrote:
Hi,
I am having problems binding a property on my page to a parameter
in my component. The following does not work
can you be more specific. "Does not work" is somehow general...
I have a CategoryListComponent as follows
<component id="categoryListComponent" type="CategoryListComponent">
<binding name="locationOfStore" value="storeLocation"/>
</component>
On my CategoryList.java I have
public abstract void setStoreLocation(Location storeLocation);
public abstract Location getStoreLocation();
If however I change it as follows, it works fine. The storeLocation
is passed into the component.
<component id="categoryListComponent" type="CategoryListComponent">
<binding name="locationOfStore" value="locationOfStore"/>
</component>
On my CategoryList.java this time I have
private Location locationOfStore;
public void setLocationOfStore(Location locationOfStore) {
this.locationOfStore = locationOfStore;
}
public Location getLocationOfStore() {
return locationOfStore;
}
I dont understand why the Location wont be passed through if it
declared as abstract. Any help would be great
Regards
Brian
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