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https://issues.apache.org/jira/browse/LIVY-654?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Oleksandr Shevchenko updated LIVY-654:
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Summary: Validate string state/kind of session/statement (was: Ability to
validate string state/kind of session/statement )
> Validate string state/kind of session/statement
> ------------------------------------------------
>
> Key: LIVY-654
> URL: https://issues.apache.org/jira/browse/LIVY-654
> Project: Livy
> Issue Type: Improvement
> Reporter: Oleksandr Shevchenko
> Priority: Minor
>
> Kind.scala, SessionState.scala and StatementState.java don't include a method
> for string validation. It might be very useful to verify if some string can
> be converted to an enum type.
>
> For example, to parse JSON string we need to write something like this (to
> prevent IllegalStateException):
>
> {code:java}
> Try {
> value match {
> case JsString(state) => SessionState(state)
> case _ => throw MyException
> }
> }
> match {
> case Success(state) => state
> case Failure(ex) => throw MyException
> }
> {code}
> it can be simplified to:
> {code:java}
> value match {
> case JsString(state) if SessionState.isValid(state) => SessionState(state)
> case _ => throw MyException
> }
> {code}
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