[OT] RE: How to get the tag name from within a taglib class ?

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[OT] RE: How to get the tag name from within a taglib class ?

Berneburg, Cris J. - US-2
Hey Chris

CS> IMO, the JSP effort was a stepping-stone on a path to better
CS> technologies like Velocity, FreeMarker, and others. If I were
CS> king, JSP would just go away. Just my POV of course, you are
CS> welcome to fall in love with JSP. :)

Seeing as I am ever on the trailing edge of learning new or even dated technologies, what do you like better about Velocity, FreeMarker, etc. more than JSP?

--
Cris "NOT Trying to Start a Flame War" Berneburg
CACI Senior Software Engineer


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Re: [OT] RE: How to get the tag name from within a taglib class ?

Christopher Schultz-2
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Cris,

On 9/14/20 15:04, Berneburg, Cris J. - US wrote:

> Hey Chris
>
> CS> IMO, the JSP effort was a stepping-stone on a path to better
> CS> technologies like Velocity, FreeMarker, and others. If I were
> CS> king, JSP would just go away. Just my POV of course, you are
> CS> welcome to fall in love with JSP. :)
>
> Seeing as I am ever on the trailing edge of learning new or even
> dated technologies, what do you like better about Velocity,
> FreeMarker, etc. more than JSP?

I started using Velocity years ago because it was bundled with Turbine
which was being used by a project I got pulled-into. We eventually
ripped everything else out, but Velocity survived.

I looked at FreeMarker when doing a book review for Apache Struts 2
and it looked very interesting, but I discovered that the guy running
the project was ... difficult to work with. SO I've stuck with
Velocity for a long time.

It definitely has its warts but it's relatively actively maintained,
and anything I need I can get in and do myself, submit patches, etc.

Advantages over JSP (IMHO):

- - Can't execute direct Java code, ever
- - Non-verbose syntax
- - No limit on template length (JSP eventually hits the "Method too
long" problem which is very inconvenient)
- - Easy to install POJO "tools" which just expose Java objects to the
runtime so you can $tool.doSomething() and it'll do whatever that is,
converting the result to a String and dropping it into the output
- - Can load templates from anywhere (disk, DB, URL, etc.)

- -chris
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RE: [OT] RE: How to get the tag name from within a taglib class ?

Berneburg, Cris J. - US-2
Thanks Chris!

CS> IMO, the JSP effort was a stepping-stone on a path to better
CS> technologies like Velocity, FreeMarker, and others. If I were
CS> king, JSP would just go away. Just my POV of course [...]

cjb> what do you like better about Velocity, FreeMarker, etc.
cjb> more than JSP?

CS> I started using Velocity years ago [...] It definitely has its
CS> warts but it's relatively actively maintained, and anything I
CS> need I can get in and do myself, submit patches, etc.
CS>
CS> Advantages over JSP (IMHO):
CS>
CS> - Can't execute direct Java code, ever
CS> - Non-verbose syntax
CS> - No limit on template length [...]
CS> - Easy to install POJO "tools" which just expose Java objects
CS>   to the runtime so you can $tool.doSomething() [...]
CS> - Can load templates from anywhere (disk, DB, URL, etc.)

Good to know!  I also see that it is an ASF project.

Is Velocity interpreted or compiled like JSP?  I'm thinking of performance impacts, like during loops.

Answering my own question, the Velocity FAQ says, "Velocity doesn't compile your templates. They are parsed into an AST (abstract syntax tree) and that is what gets cached."

--
Cris Berneburg
CACI Senior Software Engineer


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Re: [OT] RE: How to get the tag name from within a taglib class ?

Christopher Schultz-2
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Cris,

On 9/15/20 13:18, Berneburg, Cris J. - US wrote:

> CS> IMO, the JSP effort was a stepping-stone on a path to better
> CS> technologies like Velocity, FreeMarker, and others. If I were
> CS> king, JSP would just go away. Just my POV of course [...]
>
> cjb> what do you like better about Velocity, FreeMarker, etc. cjb>
> more than JSP?
>
> CS> I started using Velocity years ago [...] It definitely has its
> CS> warts but it's relatively actively maintained, and anything I
> CS> need I can get in and do myself, submit patches, etc. CS> CS>
> Advantages over JSP (IMHO): CS> CS> - Can't execute direct Java
> code, ever CS> - Non-verbose syntax CS> - No limit on template
> length [...] CS> - Easy to install POJO "tools" which just expose
> Java objects CS>   to the runtime so you can $tool.doSomething()
> [...] CS> - Can load templates from anywhere (disk, DB, URL, etc.)
>
> Good to know!  I also see that it is an ASF project.
>
> Is Velocity interpreted or compiled like JSP?  I'm thinking of
> performance impacts, like during loops.
>
> Answering my own question, the Velocity FAQ says, "Velocity
> doesn't compile your templates. They are parsed into an AST
> (abstract syntax tree) and that is what gets cached."
Right. It's not really interpreted OR compiled. But it's not re-parsed
on every request unless you configure it to do that. I've never had
any performance complaints myself.

- -chris
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