help formulating an ?

[stephan beal <st...@einsurance.de>]

Good morning!

i have a set of files with a dependency list which i just can't seem to 
formulate in ant. It goes a little something like this...

Single dir contains:

foo.txt
foo.xml - generated from foo.txt
[many files].java - generated from foo.txt
generator.pl - processes foo.txt to make foo.xml & *.java.
*.tmpl - template code which goes into *.java.

In addition, the directory contains many non-auto-generated classes, but they 
are only important in that the pattern *.java cannot be reliably used in that 
directory to check dependencies between the auto-gen'd files.

The dependency chain goes something like this:

- if foo.txt is newer than foo.xml, rebuild.
- if *.tmpl are newer than foo.txt, rebuild.
- if generator.pl is newer than foo.txt, rebuild.

(Note that when i say "rebuild", i mean "sets a flag which will eventually 
kick off the build.")

My instinct is to use several <uptodate> blocks to set a single flag, but i'm 
really not sure how ant's "property immutability" applies there, so i 
hesitate to do so. i've tried using a <condition> but was not successful in 
correctly handling all cases.

Any suggestions?

----- stephan
stephan@einsurance.de - http://www.einsurance.de
Office: +49 (89)  552 92 862 Handy:  +49 (179) 211 97 67
"I didn't give in to the Nazis and I won't give in to the bladder." 
- The Queen Mum


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Re: help formulating an ?

[Stefan Bodewig <bo...@apache.org>]

On Wed, 24 Apr 2002, stephan beal <st...@einsurance.de> wrote:

> The dependency chain goes something like this:
> 
> - if foo.txt is newer than foo.xml, rebuild.
> - if *.tmpl are newer than foo.txt, rebuild.
> - if generator.pl is newer than foo.txt, rebuild.
> 
> (Note that when i say "rebuild", i mean "sets a flag which will
> eventually kick off the build.")
> 
> My instinct is to use several <uptodate> blocks to set a single
> flag,

Would work, you could also use dependset to delete foo.xml if either
foo.txt or *.tml or generator.pl is newer than it and then use
available to see if it still is there.

> but i'm really not sure how ant's "property immutability" applies
> there,

What you really want is to check for the opposite of uptodate, right?

<condition>
  <not>
    <and>
      <uptodate ...>  <!-- foo.xml is newer than foo.txt -->
      <uptodate ...>  <!-- foo.txt is newer than *.tmpl -->
      <uptodate ...>  <!-- foo.txt is newer than generator.pl -->
    </and>
  </not>
</condition>

may be better.

Stefan

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