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

    https://github.com/apache/spark/pull/15398#discussion_r83552457
  
    --- Diff: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/StringUtils.scala
 ---
    @@ -25,26 +25,25 @@ object StringUtils {
     
       // replace the _ with .{1} exactly match 1 time of any character
       // replace the % with .*, match 0 or more times with any character
    -  def escapeLikeRegex(v: String): String = {
    -    if (!v.isEmpty) {
    -      "(?s)" + (' ' +: v.init).zip(v).flatMap {
    -        case (prev, '\\') => ""
    -        case ('\\', c) =>
    -          c match {
    -            case '_' => "_"
    -            case '%' => "%"
    -            case _ => Pattern.quote("\\" + c)
    -          }
    -        case (prev, c) =>
    -          c match {
    -            case '_' => "."
    -            case '%' => ".*"
    -            case _ => Pattern.quote(Character.toString(c))
    -          }
    -      }.mkString
    -    } else {
    -      v
    +  def escapeLikeRegex(str: String): String = {
    +    val builder = new StringBuilder()
    +    var escaping = false
    +    for (next <- str) {
    +      if (escaping) {
    +        builder ++= Pattern.quote(Character.toString(next))
    --- End diff --
    
    ok. @jodersky. Thanks for clarifying.


---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---

---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org

Reply via email to