DO NOT REPLY [Bug 19224] New: - The task should accept the 'dependcache' and 'dependcacheref' attributes

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=19224

The <javac> task should accept the 'dependcache' and 'dependcacheref' attributes

           Summary: The <javac> task should accept the 'dependcache' and
                    'dependcacheref' attributes
           Product: Ant
           Version: 2.0 spec
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Other
         Component: Core tasks
        AssignedTo: [EMAIL PROTECTED]
        ReportedBy: [EMAIL PROTECTED]


We use 'WorkAreas' pointing to 'Baselines' (see bug 19006).


Currently, the <depend> task works by deleting all outdated 'class' files from 
'srcdir'.

But the 'Baselines' are read-only (once published, their content must never be 
modified), so the <depend> task can NOT handle Java dependencies for 
'WorkAreas' 
pointing to 'Baselines'.


My enhancement request is that the <javac> task accepts the 'dependcache' and 
'dependcacheref' attributes (similar respectively to the 'sourcepath' and 
'sourcepathref' attributes) :

If 'dependcache' or 'dependcacheref' is specified :

-  If <javac> does NOT find the dependencies cache in the first directory of 
'dependcache', then it should copy it from the next directory of 'dependcache'.

-  Whenever a first 'java' file in 'srcdir' has an absent or outdated 
corresponding 'class' file in 'classpath', then <javac> should also recompile 
all 'java' files in 'sourcepath' impacted by this first 'java' file.


Then the following statements should work :

    <path  id="myPath">
      <pathelement  location="${basedir}"/>
      <pathelement  location="${sp1}"/>
      <pathelement  location="${sp2}"/>
    </path>       

    <javac      srcdir="${basedir}"
               destdir="${basedir}"
         sourcepathref="myPath"
          classpathref="myPath"
        dependcacheref="myPath"/>


I know very well that the implementation of this feature is a lot of work for 
you (I have implemented it in the PERL script that we use everyday), but this 
feature is mandatory for us to replace our proprietary PERL script by 
'build.xml' files.