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From: jodersky <git@git.apache.org>
To: reviews@spark.apache.org
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References: <git-pr-15257-spark@git.apache.org>
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Subject: [GitHub] spark pull request #15257: [SPARK-17683][SQL] Support ArrayType in Literal.a...
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Message-Id: <20160930210434.5A800E0209@git1-us-west.apache.org>
Date: Fri, 30 Sep 2016 21:04:34 +0000 (UTC)
archived-at: Fri, 30 Sep 2016 21:04:36 -0000

Github user jodersky commented on a diff in the pull request:

    https://github.com/apache/spark/pull/15257#discussion_r81417809
  
    --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/literals.scala ---
    @@ -60,6 +76,45 @@ object Literal {
       }
     
       /**
    +   * Returns the Spark SQL DataType for a given class object. Since this type needs to be resolved
    +   * in runtime, we use match-case idioms for class objects here. However, there are similar
    +   * functions in other files (e.g., HiveInspectors), so these functions need to merged into one.
    +   */
    +  private[this] def componentTypeToDataType(clz: Class[_]): DataType = clz match {
    +    // primitive types
    +    case c: Class[_] if c == JavaShort.TYPE => ShortType
    --- End diff --
    
    hmm, I didn't think about my own advice: matching agains lowercase classOf[X] doesn't work. So either `case _ if clz==classOf[]` or case c if c == classOf[]` are good


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