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From "Dan Diodati (JIRA)" <>
Subject [jira] Created: (IVY-1157) buildnumber does not work when there is a dependency referenced by the same ivy file.
Date Thu, 07 Jan 2010 21:13:16 GMT
buildnumber does not work when there is a dependency referenced by the same ivy file.

                 Key: IVY-1157
             Project: Ivy
          Issue Type: Bug
          Components: Ant
    Affects Versions: 2.1.0
         Environment: MacOSX, IVY 2.1.0
            Reporter: Dan Diodati

I ran into a case where I resolve one ivy file that references a artifact called tools. Then
later I try to get a new build number of the tools artifact and it acts as if it does not
exist and starts at 1.
This seems to occur because in the IvyBuildNumber it uses a ModuleId object which does some
caching of the module information and then does object comparisions in the getMatcher method.
In my case the String object ends up changing and so it thinks there is not an existing artifact
giving me the 1.0 version instead of the correct one.

I have some test build to simulate the problem and would attach it if I could. You can ping
me and I can send it to you.

Note the second output will be: [echo] tool current revision is: working@sfdanmac.local; new
revision is: 1.0

Since there is a tools artifact with 1.1.0 it should return a result of 1.2 and not 1.0.

I found the fix was to modify the IvyBuildNumber to do String comparisons using the equals
operator instead of the ==. Here is the diff that fixes the issue:

Index: src/java/org/apache/ivy/ant/
--- src/java/org/apache/ivy/ant/	(revision 888715)
+++ src/java/org/apache/ivy/ant/	(working copy)
@@ -165,9 +165,9 @@
             private PatternMatcher regexp = new ExactOrRegexpPatternMatcher();
             public Matcher getMatcher(String expression) {
-                if ((expression == organisation)
-                        || (expression == module)
-                        || (expression == branch)) {
+                if ((expression.equals(organisation))
+                        || (expression.equals(module))
+                        || (expression.equals(branch))) {
                     return exact.getMatcher(expression);
                 return regexp.getMatcher(expression);

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