AbstractResultList.subList throws UnsupportedOperationException
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Key: OPENJPA-1025
URL: https://issues.apache.org/jira/browse/OPENJPA-1025
Project: OpenJPA
Issue Type: Bug
Components: lib
Affects Versions: 1.2.1, 1.3.0, 2.0.0
Environment:
http://svn.apache.org/viewvc/openjpa/trunk/openjpa-lib/src/main/java/org/apache/openjpa/lib/rop/AbstractResultList.java?revision=757278&view=markup,
Seam 2.0, OpenJPA 1.2.1
Reporter: Julien Kronegg
AbstractResultList implements the basics for readonly result lists. When
calling the subList(int,int) method, the following exception is raised:
java.lang.UnsupportedOperationException
at
org.apache.openjpa.lib.rop.AbstractResultList.subList(AbstractResultList.java:84)
at
org.apache.openjpa.kernel.DelegatingResultList.subList(DelegatingResultList.java:308)
...
Since the subList() method contract is to create a new List from the
ResultList, this operation does not modify the original list.
Thus, the subList() method should not raise an exception but should return a
new list such as:
return new ArrayList(openjpaList).subList(from, to);
This problem is also found by other users:
http://n2.nabble.com/DelegatingResultList.subList-not-implemented--td210389.html
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