Package org.elasticsearch.rest

Class RestUtils

  • public class RestUtils
extends java.lang.Object

    • Constructor Summary

      Constructors 
      Constructor Description
      RestUtils()  

    • Method Summary

      Modifier and Type Method Description
      static java.util.regex.Pattern checkCorsSettingForRegex​(java.lang.String corsSetting)
      Determine if CORS setting is a regex
      static java.lang.String[] corsSettingAsArray​(java.lang.String corsSetting)
      Return the CORS setting as an array of origins.
      static java.lang.String decodeComponent​(java.lang.String s)
      Decodes a bit of an URL encoded by a browser.
      static java.lang.String decodeComponent​(java.lang.String s, java.nio.charset.Charset charset)
      Decodes a bit of an URL encoded by a browser.
      static void decodeQueryString​(java.lang.String s, int fromIndex, java.util.Map<java.lang.String,​java.lang.String> params)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • RestUtils

        public RestUtils()

    • Method Detail

      • decodeQueryString

        public static void decodeQueryString​(java.lang.String s,
                                     int fromIndex,
                                     java.util.Map<java.lang.String,​java.lang.String> params)

      • decodeComponent

        public static java.lang.String decodeComponent​(java.lang.String s)
        Decodes a bit of an URL encoded by a browser.

        This is equivalent to calling decodeComponent(String, Charset) with the UTF-8 charset (recommended to comply with RFC 3986, Section 2).

        Parameters:
        s - The string to decode (can be empty).
        Returns:
        The decoded string, or s if there's nothing to decode. If the string to decode is null, returns an empty string.
        Throws:
        java.lang.IllegalArgumentException - if the string contains a malformed escape sequence.

      • decodeComponent

        public static java.lang.String decodeComponent​(java.lang.String s,
                                               java.nio.charset.Charset charset)
        Decodes a bit of an URL encoded by a browser.

        The string is expected to be encoded as per RFC 3986, Section 2. This is the encoding used by JavaScript functions encodeURI and encodeURIComponent, but not escape. For example in this encoding, é (in Unicode U+00E9 or in UTF-8 0xC3 0xA9) is encoded as %C3%A9 or %c3%a9.

        This is essentially equivalent to calling URLDecoder.URLDecoder.decode(String, String) except that it's over 2x faster and generates less garbage for the GC. Actually this function doesn't allocate any memory if there's nothing to decode, the argument itself is returned.

        Parameters:
        s - The string to decode (can be empty).
        charset - The charset to use to decode the string (should really be StandardCharsets.UTF_8.
        Returns:
        The decoded string, or s if there's nothing to decode. If the string to decode is null, returns an empty string.
        Throws:
        java.lang.IllegalArgumentException - if the string contains a malformed escape sequence.

      • checkCorsSettingForRegex

        public static java.util.regex.Pattern checkCorsSettingForRegex​(java.lang.String corsSetting)
        Determine if CORS setting is a regex
        Returns:
        a corresponding Pattern if so and o.w. null.

      • corsSettingAsArray

        public static java.lang.String[] corsSettingAsArray​(java.lang.String corsSetting)
        Return the CORS setting as an array of origins.
        Parameters:
        corsSetting - the CORS allow origin setting as configured by the user; should never pass null, but we check for it anyway.
        Returns:
        an array of origins if set, otherwise null.