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From "Leigh L. Klotz, Jr (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IVY-1296) dual resolver without @name gives NPE
Date Thu, 26 May 2011 21:12:53 GMT
dual resolver without @name gives NPE
-------------------------------------

                 Key: IVY-1296
                 URL: https://issues.apache.org/jira/browse/IVY-1296
             Project: Ivy
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.2.0
            Reporter: Leigh L. Klotz, Jr
            Priority: Minor


A <dual> with no name attribute gets an NPE in resolve because the
http://ant.apache.org/ivy/history/trunk/settings/resolvers.html#common says that name is required
on resolvers, but it's neither checked nor enforced, and some places later blows up with an
NPE.

<dual> says it uses common attributes.  If so, it really should check and complain instead
of blowing up cryptically.

Alternatively, a schema for ivy-settings would help as well.  (I know it says it's free-form,
but if it crashes with NPE with malformed input, it's not exactly free-form.)

Here's a test-caseish description:

<ivysettings>
 <settings defaultResolver="x" />
 <resolvers>
    <chain name="vendor-1">
      <dual >
        <filesystem name="vendor1-ivy" checkmodified="true" changingPattern=".*">
          <ivy pattern="${vendor.dir}/vendor1-ivy/[organization]-ivy.xml" />
        </filesystem>
        <filesystem name="vendor1-jars" checkmodified="true" changingPattern=".*">
          <artifact pattern="${vendor.dir}/vendor1/[artifact].[ext]" />
        </filesystem>
      </dual>
    </chain>
    <chain name="x"> ... </chain>
  </resolvers>
  <modules>
    <module organisation="com.vendor1" module="*" resolver="vendor1" />
  </modules>
</ivysettings>



 vendor1's module object has a resolver with no name, and it gets an NPE trying to cache that
name inside DefaultRepositoryCacheManager.saveResolvers.

main[1] where
  [1] java.util.Hashtable.put (Hashtable.java:394)
  [2] java.util.Properties.setProperty (Properties.java:143)
  [3] org.apache.ivy.core.cache.DefaultRepositoryCacheManager.saveResolvers (DefaultRepositoryCacheManager.java:423)
  [4] org.apache.ivy.core.resolve.IvyNode.loadData (IvyNode.java:176)
  [5] org.apache.ivy.core.resolve.VisitNode.loadData (VisitNode.java:287)
  [6] org.apache.ivy.core.resolve.ResolveEngine.fetchDependencies (ResolveEngine.java:696)
  [7] org.apache.ivy.core.resolve.ResolveEngine.doFetchDependencies (ResolveEngine.java:781)
  [8] org.apache.ivy.core.resolve.ResolveEngine.fetchDependencies (ResolveEngine.java:704)
  [9] org.apache.ivy.core.resolve.ResolveEngine.doFetchDependencies (ResolveEngine.java:781)
  [10] org.apache.ivy.core.resolve.ResolveEngine.fetchDependencies (ResolveEngine.java:704)
  [11] org.apache.ivy.core.resolve.ResolveEngine.getDependencies (ResolveEngine.java:576)
  [12] org.apache.ivy.core.resolve.ResolveEngine.resolve (ResolveEngine.java:237)
  [13] org.apache.ivy.core.resolve.ResolveEngine.resolve (ResolveEngine.java:195)
  [14] org.apache.ivy.Ivy.resolve (Ivy.java:502)
  [15] org.apache.ivy.ant.IvyResolve.doExecute (IvyResolve.java:244)
  [16] org.apache.ivy.ant.IvyTask.execute (IvyTask.java:277)
  [17] org.apache.tools.ant.UnknownElement.execute (UnknownElement.java:291)
  [18] sun.reflect.GeneratedMethodAccessor5.invoke (null)
  [19] sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25)
  [20] java.lang.reflect.Method.invoke (Method.java:597)
  [21] org.apache.tools.ant.dispatch.DispatchUtils.execute (DispatchUtils.java:106)
  [22] org.apache.tools.ant.Task.perform (Task.java:348)
  [23] org.apache.tools.ant.Target.execute (Target.java:390)
  [24] org.apache.tools.ant.Target.performTasks (Target.java:411)
  [25] org.apache.tools.ant.Project.executeSortedTargets (Project.java:1,360)
  [26] org.apache.tools.ant.Project.executeTarget (Project.java:1,329)
  [27] org.apache.tools.ant.helper.DefaultExecutor.executeTargets (DefaultExecutor.java:41)
  [28] org.apache.tools.ant.Project.executeTargets (Project.java:1,212)
  [29] org.apache.tools.ant.Main.runBuild (Main.java:801)
  [30] org.apache.tools.ant.Main.startAnt (Main.java:218)
  [31] org.apache.tools.ant.launch.Launcher.run (Launcher.java:280)
  [32] org.apache.tools.ant.launch.Launcher.main (Launcher.java:109)
main[1] 

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