[jira] [Commented] (METAMODEL-225) Metamodel throws a UnsupportedOperationException for documents containing nested JSON in ElasticSearch

["Kasper Sørensen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/METAMODEL-225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15076370#comment-15076370 ] 

Kasper Sørensen commented on METAMODEL-225:
-------------------------------------------

Good catch.
Just a clarification from my side: I guess this only happens in the (new) REST protocol elasticsearch module. The (old) native module is not affected I think.

> Metamodel throws a UnsupportedOperationException for documents containing nested JSON in ElasticSearch
> ------------------------------------------------------------------------------------------------------
>
>                 Key: METAMODEL-225
>                 URL: https://issues.apache.org/jira/browse/METAMODEL-225
>             Project: Apache MetaModel
>          Issue Type: Bug
>            Reporter: Akash Suryawanshi
>
> I am using metamodel to connect to elastic search. I created a document in an index
> {code}
> PUT /megacorp/employee/1
> {
>     "email":      "john@smith.com",
>     "first_name": "John",
>     "last_name":  "Smith",
>     "info": {
>         "bio":         "Eco-warrior and defender of the weak",
>         "age":         25,
>         "interests": [ "dolphins", "whales" ]
>     },
>     "join_date": "2014/05/01"
> }
> {code}
> I create a DataSet and call the getRow method on it. I get the following exception
> {code}
> java.lang.UnsupportedOperationException: JsonObject
> 	at com.google.gson.JsonElement.getAsString(JsonElement.java:191) ~[gson-2.2.4.jar:na]
> 	at org.apache.metamodel.elasticsearch.rest.JestElasticSearchUtils.getDataFromColumnType(JestElasticSearchUtils.java:72) ~[MetaModel-elasticsearch-rest-4.5.0.jar:4.5.0]
> 	at org.apache.metamodel.elasticsearch.rest.JestElasticSearchUtils.createRow(JestElasticSearchUtils.java:50) ~[MetaModel-elasticsearch-rest-4.5.0.jar:4.5.0]
> 	at org.apache.metamodel.elasticsearch.rest.JestElasticSearchDataSet.getRow(JestElasticSearchDataSet.java:126) ~[MetaModel-elasticsearch-rest-4.5.0.jar:4.5.0]
> {code}
> However this exception does not occur when the document is a simple JSON i.e.. no nested JSON with any of the fields.



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