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https://issues.apache.org/jira/browse/OLINGO-1239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16378665#comment-16378665
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Ralf Handl edited comment on OLINGO-1239 at 2/27/18 2:37 PM:
-------------------------------------------------------------
Note: the original V4 ABNF for $search was overly restrictive and only stated
in a comment that it was overly restrictive:
{{searchWord = 1*ALPHA ; Actually: any character from the Unicode categories L
or Nl,}}
{{ ; but not the words AND, OR, and NOT}}
This mislead some implementation teams, so this was changed to
{{; A searchWord is a sequence of one or more letters, digits, commas, or
dots.}}
{{ ; This includes Unicode characters of categories L or N using UTF-8 and
percent-encoding.}}
{{ ; The words AND, OR, and NOT are not a valid searchWord.}}
{{ ; Expressing this in ABNF is somewhat clumsy, so the following rule is
overly generous.}}
{{ searchWord = 1*( ALPHA / DIGIT / COMMA / "." / pct-encoded )}}
See
[http://docs.oasis-open.org/odata/odata/v4.01/cs01/abnf/odata-abnf-construction-rules.txt]
was (Author: ralfhandl):
Note: the original V4 ABNF for $search was overly restrictive and only stated
in a comment that it was overly restrictive:
{{searchWord = 1*ALPHA ; Actually: any character from the Unicode categories L
or Nl,}}
{{ ; but not the words AND, OR, and NOT}}
This mislead some implementation teams, so this was changed to
{quote}{\{; A searchWord is a sequence of one or more letters, digits, commas,
or dots. }}
{\{; This includes Unicode characters of categories L or N using UTF-8 and
percent-encoding. }}
{\{; The words AND, OR, and NOT are not a valid searchWord. }}
{\{; Expressing this in ABNF is somewhat clumsy, so the following rule is
overly generous. }}
{{searchWord = 1*( ALPHA / DIGIT / COMMA / "." / pct-encoded )}}
{quote}
See
[http://docs.oasis-open.org/odata/odata/v4.01/cs01/abnf/odata-abnf-construction-rules.txt]
> $search does not allow special characters
> -----------------------------------------
>
> Key: OLINGO-1239
> URL: https://issues.apache.org/jira/browse/OLINGO-1239
> Project: Olingo
> Issue Type: Bug
> Affects Versions: (Java) V4 4.3.0, (Java) V4 4.4.0
> Reporter: Claudia
> Priority: Major
>
> $search does not allow to search for special chars, eg. umlauts (german
> ä,ö,ü), but also other chars like $, ? should be allowed.
> Root cause: SearchTokenizer checks only if a character is alphanumeric!
> Workaround:
> Implementing a custom query option and encode the given value with
> encodeURIComponent() on client side.
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