# Elasticsearch Play framework plugin **URL:** \ **Category:** Elasticsearch\ **Created:** [July 27, 2012, 3:50pm UTC](https://discuss.elastic.co/t/elasticsearch-play-framework-plugin/8542 "2012-07-27T15:50:53Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![David\_3](https://avatars.discourse-cdn.com/v4/letter/d/eada6e/32.png) [@David\_3](https://discuss.elastic.co/u/David_3)\ **Post date:** [July 27, 2012, 3:50pm UTC](https://discuss.elastic.co/t/elasticsearch-play-framework-plugin/8542/1 "2012-07-27T15:50:53Z")
I also posted this in the play framework group but maybe somebody here has also come across this while using elasticsearch with the Play framework. I ran into this issue when using the elasticsearch plugin for the Play framework. The elasticsearch index contains a _string_ value for the enum \*ClassName.type \* and the field mapper for the elasticsearch plugin cannot create a new enum type with the string returned from the index. I also embedded the enum but the enum could not be instantiated (see error below). It's a very specific area of Play but has anyone come across this before or know if enum types can be embedded or even a workaround to allow the mapper to map a string to an enum type. Error when trying to map a string as an enum value ERROR ~ java.lang.IllegalArgumentException: Can not set models.ClassName$EnumName field models.ClassName.type to java.lang.String at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source) at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source) at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source) at java.lang.reflect.Field.set(Unknown Source) at play.modules.elasticsearch.util.ReflectionUtil.setFieldValue(ReflectionUtil.java:419) at play.modules.elasticsearch.util.ReflectionUtil.setFieldValue(ReflectionUtil.java:397) at play.modules.elasticsearch.mapping.impl.SimpleFieldMapper.inflate(SimpleFieldMapper.java:50) at play.modules.elasticsearch.mapping.impl.EmbeddedFieldMapper.inflate(EmbeddedFieldMapper.java:161) at play.modules.elasticsearch.mapping.impl.PlayModelMapper.createModel(PlayModelMapper.java:156) at play.modules.elasticsearch.mapping.impl.PlayModelMapper.createModel(PlayModelMapper.java:29) at play.modules.elasticsearch.transformer.MapperTransformer.toSearchResults(MapperTransformer.java:75) at play.modules.elasticsearch.Query.fetch(Query.java:188) at controllers.Search$ObjectType.findPagewitFilter(Search.java:1545) at controllers.Search.getCountForFilterMenuItem(Search.java:449) at controllers.Search.search(Search.java:229) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at play.mvc.ActionInvoker.invokeWithContinuation(ActionInvoker.java:548) at play.mvc.ActionInvoker.invoke(ActionInvoker.java:502) at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:478) at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:473) at play.mvc.ActionInvoker.invoke(ActionInvoker.java:161) at play.server.PlayHandler$NettyInvocation.execute(PlayHandler.java:257) at play.Invoker$Invocation.run(Invoker.java:278) at play.server.PlayHandler$NettyInvocation.run(PlayHandler.java:235) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Error when embedding an enum and trying to retrieve the value as an enum type. @6b6jpgfp4 Internal Server Error (500) for request GET /productsearch/search Execution exception (In /app/controllers/Search.java around line 1545) RuntimeException occured : Cannot instantiate class models.CoreAsset$AssetType play.exceptions.JavaExecutionException: Cannot instantiate class models.CoreAsset$AssetType at play.mvc.ActionInvoker.invoke(ActionInvoker.java:231) at Invocation.HTTP Request(Play!) Caused by: java.lang.RuntimeException: Cannot instantiate class models.CoreAsset$AssetType at play.modules.elasticsearch.util.ReflectionUtil.newInstance(ReflectionUtil.java:270) at play.modules.elasticsearch.mapping.impl.EmbeddedFieldMapper.inflate(EmbeddedFieldMapper.java:153) at play.modules.elasticsearch.mapping.impl.EmbeddedFieldMapper.inflate(EmbeddedFieldMapper.java:161) at play.modules.elasticsearch.mapping.impl.PlayModelMapper.createModel(PlayModelMapper.java:156) at play.modules.elasticsearch.mapping.impl.PlayModelMapper.createModel(PlayModelMapper.java:29) at play.modules.elasticsearch.transformer.MapperTransformer.toSearchResults(MapperTransformer.java:75) at play.modules.elasticsearch.Query.fetch(Query.java:188) at controllers.Search$ObjectType.findPagewitFilter(Search.java:1545) at controllers.Search.getCountForFilterMenuItem(Search.java:410) at controllers.Search.search(Search.java:216) at play.mvc.ActionInvoker.invokeWithContinuation(ActionInvoker.java:548) at play.mvc.ActionInvoker.invoke(ActionInvoker.java:502) at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:478) at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:473) at play.mvc.ActionInvoker.invoke(ActionInvoker.java:161) ... 1 more Caused by: java.lang.IllegalArgumentException: Cannot reflectively create enum objects at play.modules.elasticsearch.util.ReflectionUtil.newInstance(ReflectionUtil.java:268) ---
**Author:** ![Roland\_Quast](https://avatars.discourse-cdn.com/v4/letter/r/f9ae1b/32.png) [@Roland\_Quast](https://discuss.elastic.co/u/Roland_Quast)\ **Post date:** [July 31, 2012, 9:05am UTC](https://discuss.elastic.co/t/elasticsearch-play-framework-plugin/8542/2 "2012-07-31T09:05:34Z")
Yes, I have found this odd problem just right now. I'm using the elasticsearch 0.4 module in play. Here's what I'm getting: java.lang.IllegalArgumentException: Can not set models.FAQCategory field models.FAQ.category to java.lang.String at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164) at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168) at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81) at java.lang.reflect.Field.set(Field.java:680) at play.modules.elasticsearch.util.ReflectionUtil.setFieldValue(ReflectionUtil.java:419) at play.modules.elasticsearch.util.ReflectionUtil.setFieldValue(ReflectionUtil.java:397) at play.modules.elasticsearch.transformer.SimpleTransformer.toSearchResults(SimpleTransformer.java:75) at play.modules.elasticsearch.Query.fetch(Query.java:190) at play.modules.elasticsearch.ElasticSearch.search(ElasticSearch.java:145) at play.modules.elasticsearch.ElasticSearch.search(ElasticSearch.java:96) at controllers.Search.index(Search.java:43) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at play.mvc.ActionInvoker.invokeWithContinuation(ActionInvoker.java:548) at play.mvc.ActionInvoker.invoke(ActionInvoker.java:502) at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:478) at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:473) at play.mvc.ActionInvoker.invoke(ActionInvoker.java:161) at play.server.PlayHandler$NettyInvocation.execute(PlayHandler.java:257) at play.Invoker$Invocation.run(Invoker.java:278) at play.server.PlayHandler$NettyInvocation.run(PlayHandler.java:235) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Any updates would be cool.. I don't know if I have to be concerned about it or not though? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 3:18am UTC](https://discuss.elastic.co/t/elasticsearch-play-framework-plugin/8542/3 "2017-07-06T03:18:21Z")