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Posted to users@tapestry.apache.org by Tobias Wehrum <Le...@dragonlab.de> on 2008/04/15 12:48:13 UTC
Calling functions at page template (in a grid) costs very much time
Hello,
in my template, I'm using a grid similar to this simplified model:
<t:grid source="gridObjects" row="currentGridObject" model="gridModel">
<t:parameter name="someCell">
${someFunctionGeneratingSomething}
</t:parameter>
</t:grid>
When i comment out the parameter block, it is significantly faster
compared to when getSomeFunctionGeneratingSomething() is called. (When
it costs 2 seconds to show 4 gridObjects without someCell, it will cost
4 seconds with it.)
At first I thought the database calls in
getSomeFunctionGeneratingSomething() are consuming the time, but then I
replaced it with a simple "return 0;" - and still it consumes almost 4
seconds, the difference was minimal.
I "solved" the problem by constructing a class dedicated to presentate
my gridObjects (simply wrapping them, so that all properties are copied
and a property does what getSomeFunctionGeneratingSomething would be
doing). That works, but it would be quite a bother to construct this for
all classes I want to output; it would nearly double my work with them,
not to mention the maintainability.
Why is this so time intensive? Is there any better way to solve this?
Thanks,
Tobias
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Re: Calling functions at page template (in a grid) costs very much time
Posted by Howard Lewis Ship <hl...@gmail.com>.
Yep, nothing takes that long in Tapestry :-)
Seriously, the ${...} stuff is turned into pure method calls, no
reflection. The only thing that can slow stuff down is database (or
equivalent out-of-process) access.
On Tue, Apr 15, 2008 at 5:30 AM, Filip S. Adamsen <fs...@fsadev.com> wrote:
> Hi Tobias,
>
> Something is definitely wrong here. Can you share some more code with us?
>
> -Filip
>
> Tobias Wehrum skrev:
>
>
>
> > Hello,
> >
> > in my template, I'm using a grid similar to this simplified model:
> >
> > <t:grid source="gridObjects" row="currentGridObject" model="gridModel">
> > <t:parameter name="someCell">
> > ${someFunctionGeneratingSomething}
> > </t:parameter> </t:grid>
> >
> > When i comment out the parameter block, it is significantly faster
> compared to when getSomeFunctionGeneratingSomething() is called. (When it
> costs 2 seconds to show 4 gridObjects without someCell, it will cost 4
> seconds with it.)
> > At first I thought the database calls in
> getSomeFunctionGeneratingSomething() are consuming the time, but then I
> replaced it with a simple "return 0;" - and still it consumes almost 4
> seconds, the difference was minimal.
> >
> > I "solved" the problem by constructing a class dedicated to presentate my
> gridObjects (simply wrapping them, so that all properties are copied and a
> property does what getSomeFunctionGeneratingSomething would be doing). That
> works, but it would be quite a bother to construct this for all classes I
> want to output; it would nearly double my work with them, not to mention the
> maintainability.
> >
> > Why is this so time intensive? Is there any better way to solve this?
> >
> > Thanks,
> > Tobias
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> > For additional commands, e-mail: users-help@tapestry.apache.org
> >
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
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>
>
--
Howard M. Lewis Ship
Creator Apache Tapestry and Apache HiveMind
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Re: Calling functions at page template (in a grid) costs very much
time
Posted by "Filip S. Adamsen" <fs...@fsadev.com>.
Hi Tobias,
Something is definitely wrong here. Can you share some more code with us?
-Filip
Tobias Wehrum skrev:
> Hello,
>
> in my template, I'm using a grid similar to this simplified model:
>
> <t:grid source="gridObjects" row="currentGridObject" model="gridModel">
> <t:parameter name="someCell">
> ${someFunctionGeneratingSomething}
> </t:parameter> </t:grid>
>
> When i comment out the parameter block, it is significantly faster
> compared to when getSomeFunctionGeneratingSomething() is called. (When
> it costs 2 seconds to show 4 gridObjects without someCell, it will cost
> 4 seconds with it.)
> At first I thought the database calls in
> getSomeFunctionGeneratingSomething() are consuming the time, but then I
> replaced it with a simple "return 0;" - and still it consumes almost 4
> seconds, the difference was minimal.
>
> I "solved" the problem by constructing a class dedicated to presentate
> my gridObjects (simply wrapping them, so that all properties are copied
> and a property does what getSomeFunctionGeneratingSomething would be
> doing). That works, but it would be quite a bother to construct this for
> all classes I want to output; it would nearly double my work with them,
> not to mention the maintainability.
>
> Why is this so time intensive? Is there any better way to solve this?
>
> Thanks,
> Tobias
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
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T5: Calling functions at page template (in a grid) costs very much
time
Posted by Tobias Wehrum <Le...@dragonlab.de>.
Sorry, I forgot: Tapestry 5.
Tobias Wehrum schrieb:
> Hello,
>
> in my template, I'm using a grid similar to this simplified model:
>
> <t:grid source="gridObjects" row="currentGridObject" model="gridModel">
> <t:parameter name="someCell">
> ${someFunctionGeneratingSomething}
> </t:parameter> </t:grid>
>
> When i comment out the parameter block, it is significantly faster
> compared to when getSomeFunctionGeneratingSomething() is called. (When
> it costs 2 seconds to show 4 gridObjects without someCell, it will
> cost 4 seconds with it.)
> At first I thought the database calls in
> getSomeFunctionGeneratingSomething() are consuming the time, but then
> I replaced it with a simple "return 0;" - and still it consumes almost
> 4 seconds, the difference was minimal.
>
> I "solved" the problem by constructing a class dedicated to presentate
> my gridObjects (simply wrapping them, so that all properties are
> copied and a property does what getSomeFunctionGeneratingSomething
> would be doing). That works, but it would be quite a bother to
> construct this for all classes I want to output; it would nearly
> double my work with them, not to mention the maintainability.
>
> Why is this so time intensive? Is there any better way to solve this?
>
> Thanks,
> Tobias
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
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