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https://issues.apache.org/jira/browse/OLINGO-1571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17579219#comment-17579219
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mibo commented on OLINGO-1571:
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Thanks [~mschur] for addressing this issue and providing the fix.
> $search does not allow some special characters in search phrase
> ---------------------------------------------------------------
>
> Key: OLINGO-1571
> URL: https://issues.apache.org/jira/browse/OLINGO-1571
> Project: Olingo
> Issue Type: Bug
> Components: odata4-server
> Affects Versions: (Java) V4 4.9.0
> Reporter: Matthias Schur
> Assignee: mibo
> Priority: Major
> Attachments: OLINGO-1571.patch
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> OLINGO 4 $search requires double encoding of some chars in search phrases.
> The [OData
> ABNF|https://github.com/oasis-tcs/odata-abnf/blob/99d6836d59f51fdd75cc9484bea3f537a098015f/abnf/odata-abnf-construction-rules.txt#L350]
> requires certain special chars such as *&* to be percent-encoded in search
> phrases:
> {code:java}
> searchPhrase = quotation-mark 1*( qchar-no-AMP-DQUOTE / SP ) quotation-mark
> qchar-no-AMP-DQUOTE = unreserved / pct-encoded-no-DQUOTE / other-delims / ":"
> / "@" / "/" / "?" / "$" / "'" / "="{code}
> However, Olingo
> [decodes|https://github.com/apache/olingo-odata4/blob/4.9.0/lib/server-core/src/main/java/org/apache/olingo/server/core/uri/parser/Parser.java#L103]
> search options before parsing, e.g. the search phrase *"bike %26 car"* is
> encoded to *%22bike%20%26%20car%22* and decoded to *"bike & car"* before
> parsing the search phrase. This results in an exception *'Forbidden character
> in state PHRASE->&’.*
> Workaround: Double encode special characters in search phrases.
> {code:java}
> http://host/service/Products?$search="bike %2526 car" {code}
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