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https://issues.apache.org/jira/browse/CONFIGURATION-799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17566817#comment-17566817
]
Gary D. Gregory commented on CONFIGURATION-799:
-----------------------------------------------
For example:
{noformat}
java.util.NoSuchElementException
at java.util.ArrayList$Itr.next(ArrayList.java:864)
at
org.apache.commons.configuration2.CombinedConfiguration$ConfigData.prependAtPath(CombinedConfiguration.java:879)
at
org.apache.commons.configuration2.CombinedConfiguration$ConfigData.getTransformedRoot(CombinedConfiguration.java:867)
at
org.apache.commons.configuration2.CombinedConfiguration.constructCombinedNode(CombinedConfiguration.java:710)
at
org.apache.commons.configuration2.CombinedConfiguration.beginWrite(CombinedConfiguration.java:659)
at
org.apache.commons.configuration2.CombinedConfiguration.beginRead(CombinedConfiguration.java:639)
at
org.apache.commons.configuration2.AbstractConfiguration.getKeys(AbstractConfiguration.java:750)
at
org.apache.commons.configuration2.TestCombinedConfiguration.testX(TestCombinedConfiguration.java:1109)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:54)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at
org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:93)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:40)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:529)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:756)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:452)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
{noformat}
> getKeys() can throw NoSuchElementException
> ------------------------------------------
>
> Key: CONFIGURATION-799
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-799
> Project: Commons Configuration
> Issue Type: Bug
> Affects Versions: 2.7
> Environment: Java 11
> Reporter: Jarek Sacha
> Priority: Major
>
> {{AbstractConfiguration#getKeys()}} can throw {{NoSuchElementException}} for
> certain configurations. Example is below, note {{addConfiguration(conf1,
> null, "")}} where {{at}} argument is blank.
> {code:java}
> BaseConfiguration conf1 = new BaseConfiguration();
> conf1.addProperty("x1", 1);
> CombinedConfiguration conf2 = new CombinedConfiguration();
> conf2.addConfiguration(conf1, null, "");
> // Following line throws NoSuchElementException
> conf2.getKeys();
> {code}
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