https://jira.opendaylight.org This file is an XML representation of an issue en-us 8.20.10 820010 22-06-2022 https://jira.opendaylight.org/browse/YANGTOOLS-411 yangtools <p>I want to generate JAVA classes from ietf-ospf, I hit StackOverflowError at the following definition, and the generation failed.</p> <p>list neighbor {<br/> description<br/> "List of neighbors.";<br/> leaf neighbor-id {<br/> type leafref </p> { path "../../neighbor/neighbor-id"; } <p> description "Neighbor.";<br/> }<br/> }</p> <p>If I replace path "../../neighbor/neighbor-id" with concrete path "/rt:routing-state/rt:routing-instance/"<br/> + "rt:routing-protocols/rt:routing-protocol/"<br/> + "ospf:ospf/ospf:instance/ospf:neighbor/ospf:neighbor-id";", the error is solved.</p> <p>How can we solve the StackOverflowError without modifying ietf-ospf file? Could we fix it in yang-tools? Thank you!</p> <p>ietf-ospf.yang file is attached. Error message is:<br/> java.lang.StackOverflowError<br/> at org.opendaylight.yangtools.yang.common.QName.create(QName.java:254)<br/> at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.stringPathPartToQName(SchemaContextUtil.java:513)<br/> at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil.access$000(SchemaContextUtil.java:50)<br/> at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil$1.apply(SchemaContextUtil.java:600)<br/> at org.opendaylight.yangtools.yang.model.util.SchemaContextUtil$1.apply(SchemaContextUtil.java:597)<br/> at com.google.common.collect.Iterators$8.transform(Iterators.java:860)<br/> at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:48)<br/> at com.google.common.collect.Iterators$5.next(Iterators.java:607)<br/> at com.google.common.collect.Iterables$10$1.next(Iterables.java:926)<br/> at com.google.common.collect.Iterators.advance(Iterators.java:979)<br/> at com.google.common.collect.Iterables$10.iterator(Iterables.java:904)<br/> at com.google.common.collect.Iterables$10.iterator(Iterables.java:902)</p> <p>Operating System: All<br/> Platform: All</p> YANGTOOLS-411

StackOverflowError for leafref

Bug Resolved Done Martin Ciglan Minna Hu Sat, 14 Feb 2015 01:00:50 +0000 Sun, 10 Apr 2022 18:35:29 +0000 Thu, 18 Jun 2015 11:03:10 +0000 0 4 <p>Attachment ietf-ospf@2014-09-17.yang has been added with description: ietf-ospf</p> <p>interface-operation {<br/> list neighbor {<br/> description<br/> "List of neighbors.";<br/> leaf neighbor-id {<br/> type leafref </p> { path "../../neighbor/neighbor-id"; } <p> }<br/> }</p> <p>This seems bit weird - this set of leafrefs references themselves (recursive definition), so there is not initial set of valid values, need to co </p> <p>Definitelly StackOverflowError is bug, but looking at original model - that one is not correct also. I believe that path should be ../../../<br/> path ../../ points to place where interface-operation is used, and then applying<br/> neighbor/neighbor-id will point back to that particular leafref.</p> <p>Thanks, Tony! The model is from IETF, I did not know why they defined the model in this way. </p> <p>You had good founding, the model will definitely causes StackOverflowError. Besides modifying the model, is there any way to handle the situation in yang-tools? Thanks!</p> <p>I propose checking schema node and leafref itself (going through schema path) to see if they match (leafref referencing itself) and in that case, throw exception. </p> <p>work in progress...</p> <p>Martin, thank you for your reply! Just to clarify, are you checking schema node and leafref? Or are you proposing for me to do that? Thanks!</p> <p>I am actually working on it, will come back to you with result</p> <p>Needs to be fixed before Lithium goes out.</p> <p>fix pushed:</p> <p><a href="https://git.opendaylight.org/gerrit/#/c/22698/" class="external-link" target="_blank" rel="nofollow noopener">https://git.opendaylight.org/gerrit/#/c/22698/</a></p> Development External issue ID 2721 External issue URL Issue Type ODL SR Target Milestone Rank 0|i02727: