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

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Details

Type: Bug
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: None
Fix Version/s: None
Component/s: streaming expressions
Labels:
None

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.