Hi everyone, I have been having an issue with literal matching for quite some time now. In the past, I just replaced all literal matching with word lists. In my current script, however, this would be rather cumbersome. The error looks like this:
java.lang.NullPointerException: null at org.apache.uima.ruta.rule.RutaLiteralMatcher.getAnnotation(RutaLiteralMatcher.java:72) at org.apache.uima.ruta.rule.RutaLiteralMatcher.getMatchingAnnotations(RutaLiteralMatcher.java:62) at org.apache.uima.ruta.rule.RutaLiteralMatcher.getMatchingAnnotations(RutaLiteralMatcher.java:37) at org.apache.uima.ruta.rule.RutaRuleElement.getAnchors(RutaRuleElement.java:52) at org.apache.uima.ruta.rule.RutaRuleElement.startMatch(RutaRuleElement.java:60) at org.apache.uima.ruta.rule.ComposedRuleElement.startMatch(ComposedRuleElement.java:87) at org.apache.uima.ruta.rule.ComposedRuleElement.startMatch(ComposedRuleElement.java:77) at org.apache.uima.ruta.rule.RutaRule.apply(RutaRule.java:65) at org.apache.uima.ruta.rule.RutaRule.apply(RutaRule.java:56) at org.apache.uima.ruta.rule.RutaRule.apply(RutaRule.java:38) at org.apache.uima.ruta.block.RutaScriptBlock.apply(RutaScriptBlock.java:72) at org.apache.uima.ruta.RutaModule.apply(RutaModule.java:56) at org.apache.uima.ruta.engine.RutaEngine.process(RutaEngine.java:612) ... 11 common frames omitted So all I know is that something is null. But I have no idea what it could be. I cannot even reproduce the issue in the Eclipse Workbench: The XMI files that cause the error work without issue in Eclipse. The error only occurs when running the CPE with the Ruta component that I created using the Maven plugin. Hence, I don’t even know what part of my script is causing the error. I have rules like this: (WS|"("|"/") (Greek|NUM|Roman) {->MARK(Specifier)} (WS|"("|"/“); which I think could be the cause. But this is based on the fact that I could fix the error with word lists until now. Hints and ideas on how to circumvent this issue are appreciated. Best, Erik