NoSuchMethodError: org.apache.solr.search.DocList.matches()I on ListRecords

[mobleyt]

Hi, I'm getting oai4solr set up on a Solr 7 instance (which might be the problem), and I'm having an issue with ListRecords requests failing. All the basic verb requests seems to be working fine, including GetIdentifier for single record responses. However, ListRecords requests with the packaged oai_dc and solr metadataPrefix formats provide the following. I'm not sure why that 'I' is coming after matches() in the stacktrace, but I'm also not a Java guy necessarily. Thanks.

org.apache.solr.search.DocList.matches()I,trace=java.lang.NoSuchMethodError: org.apache.solr.search.DocList.matches()I at org.socialhistoryservices.api.oai.OAIRequestHandler.buildQuery(OAIRequestHandler.java:216) at org.socialhistoryservices.api.oai.OAIRequestHandler.handleRequestBody(OAIRequestHandler.java:130) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:177) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2503) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:710) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:516) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:382) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:326) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1751) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) at org.eclipse.jetty.server.Server.handle(Server.java:534) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108) at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) at java.lang.Thread.run(Thread.java:748

[lwo]

Thanks for the report. It may be an API change, so I think I better try it out in the compiler for Solr 7.x...

[lwo]

Yes, a small change it seems:

Wrong 5th argument type. Found: 'long', required: 'int' less...

And the getSource and getVersion methods no longer exist.... there may be more API changes. To make the plugin agreeable for Solr 7.x I will make a corresponding branch with the required upgrades.

[kazooo]

Hello, I'm interested in how soon there will be a version of plugin for Solr 7.x and if it will be at all, thanks.

[lwo]

Hello Xermak00. Nothing is planned as yet. Hence I would not say no to a pull request.

[mobleyt]

Just as a FYI, dropping the @Override from getSource and getVersion and casting docList.matches() as int allowed me to recompile and get things going again on Solr 7.

At org.socialhistoryservices.api.oai.OAIRequestHandler.buildQuery(OAIRequestHandler.java:216):
(int) docList.matches()

I'm sure there's a more correct way to do that of course.

[lwo]

Thanks, I'll find some time to try this out and if it passes testing I'll put it in for 7.