[SOLR-10894] Streaming expressions handling of escaped special characters bug

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: streaming expressions
• Assignee: Unassigned
• Reporter: Houston Putman
• Created: 15/Jun/17 17:20
• Updated: 15/Feb/24 12:20

Description

Streaming expressions expect all special characters in named parameter values to be singly escaped. Since queries can contain strings surrounded by double quotes, double-escaping is necessary.

Given the following query:
summary:"\"This is a summary\"+"
A streaming expression would require surrounding the query with double quotes, therefore every special character in the query should be escaped:
select(collection,q="\"\\\"This is a summary\\\"\\\+\"",....)

Streaming expressions should unescape the strings contained within double quotes, however currently they are only unescaping \" -> ". Therefore it is impossible to query for text fields containing double quotes. Also other special characters are not unescaped; this inconsistency causes confusion.

Issue Links

• relates to: SOLR-14139 Support backtick phrase queries in Streaming Expressions
• links to: GitHub Pull Request #1781