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From "Rani Y. (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-9852) Solr JDBC doesn't implement columns' metadata
Date Tue, 13 Dec 2016 07:20:58 GMT

    [ https://issues.apache.org/jira/browse/SOLR-9852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15744424#comment-15744424
] 

Rani Y. commented on SOLR-9852:
-------------------------------

I am quite sure this is something which should be implemented by JDBC.
Unless you assume that the users of the JDBC know all the columns of a given collection/table,
there should be an implementation to getting the columns data and types.
If I understand correctly is was implemented just not in the write places, because after a
query returns, there is an ability to see the columns types.
Receiving the meta-data of all objects is the "entry level" for JDBC implementations.
Though, it does seem quite weird, that also the Spark's JDBC implementors are having similar
problems.

> Solr JDBC doesn't implement columns' metadata
> ---------------------------------------------
>
>                 Key: SOLR-9852
>                 URL: https://issues.apache.org/jira/browse/SOLR-9852
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Parallel SQL
>    Affects Versions: 6.3
>         Environment: N/A
>            Reporter: Rani Y.
>              Labels: solrJ
>
> This is the error I get (from Squirrel SQL) while trying to get the objects -meaning
both tables and columns metadata
> 2016-12-12 13:47:48,241 [Thread-2] ERROR net.sourceforge.squirrel_sql.client.session.schemainfo.SchemaInfo
 - Error occurred creating data types collection
> java.lang.UnsupportedOperationException
> 	at org.apache.solr.client.solrj.io.sql.DatabaseMetaDataImpl.getTypeInfo(DatabaseMetaDataImpl.java:773)
> 	at net.sourceforge.squirrel_sql.fw.sql.SQLDatabaseMetaData.getDataTypesSimpleNames(SQLDatabaseMetaData.java:1978)
> 	at net.sourceforge.squirrel_sql.client.session.schemainfo.SchemaInfo.loadDataTypes(SchemaInfo.java:900)
> 	at net.sourceforge.squirrel_sql.client.session.schemainfo.SchemaInfo.privateLoadAll(SchemaInfo.java:315)
> 	at net.sourceforge.squirrel_sql.client.session.schemainfo.SchemaInfo.reloadAll(SchemaInfo.java:208)
> 	at net.sourceforge.squirrel_sql.client.session.schemainfo.SchemaInfo.reloadAll(SchemaInfo.java:198)
> 	at net.sourceforge.squirrel_sql.client.session.mainpanel.objecttree.ObjectTree$3.run(ObjectTree.java:315)
> 	at net.sourceforge.squirrel_sql.fw.util.TaskExecuter.run(TaskExecuter.java:82)
> 	at java.lang.Thread.run(Thread.java:745)



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