Markus KARG created MRESOURCES-168:
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Summary: Don't overwrite unchanged resource to prevent unnecessary
subsequent processing
Key: MRESOURCES-168
URL: https://jira.codehaus.org/browse/MRESOURCES-168
Project: Maven 2.x Resources Plugin
Issue Type: Improvement
Components: filtering
Environment: MVN3.0.4 Win7 Pro SP1 64 Bit JDK 1.6.0_07
Reporter: Markus KARG
Priority: Minor
When filtering resources, the resulting files' last-modified date is updated.
This is correct, as the file just got produced. But, there might be lots of
files that passed the filter unchanged -- but now have changed last-modified
date, too.
This induces unneccesary subsequent processing and should be prevented.
Example: Filtering of Java sources, then compiling those. The Java compiler
typically will only compile modified files, but not thinks ALL files are
modified.
A solution could be to check whether at least one property was actually found
in the filtered file and to reset the last-modified date in all other cases.
Another solution could be to rename the previous output file and compare both
files after filtering. If they are identical, the new fill can be discarded and
the previous file can be renamed back.
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