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rewrite_query

uni_query::query::rewrite

Function rewrite_query 

Source 
pub fn rewrite_query(query: Query) -> Result<Query, RewriteError>
Expand description

Rewrite a complete query

This is the main entry point for applying query rewrites. It walks the entire query tree and applies registered rewrite rules to all function calls.

§Arguments

  • query - The query to rewrite

§Returns

The rewritten query with function calls transformed into predicates.

§Example

ⓘ
let query = parse_cypher("MATCH (p)-[e:EMPLOYED_BY]->(c) WHERE uni.temporal.validAt(e, 'start', 'end', datetime('2021-06-15')) RETURN c")?;
let rewritten = rewrite_query(query)?;
// The validAt function will be transformed into: e.start <= ... AND (e.end IS NULL OR e.end >= ...)