nodedb-sql 0.3.0

SQL parser, planner, and optimizer for NodeDB
Documentation 
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// SPDX-License-Identifier: Apache-2.0

//! Parse maintenance: ANALYZE, COMPACT, SHOW COMPACTION STATUS, SHOW STORAGE.

use crate::ddl_ast::statement::{ClusterStmt, NodedbStatement};
use crate::error::SqlError;

pub(super) fn try_parse(
    upper: &str,
    parts: &[&str],
    _trimmed: &str,
) -> Option<Result<NodedbStatement, SqlError>> {
    (|| -> Option<NodedbStatement> {
        if upper.starts_with("ANALYZE") {
            let collection = parts.get(1).map(|s| s.to_string());
            return Some(NodedbStatement::Cluster(ClusterStmt::Analyze {
                collection,
            }));
        }
        if upper.starts_with("COMPACT ") {
            let collection = parts.get(1)?.to_string();
            return Some(NodedbStatement::Cluster(ClusterStmt::Compact {
                collection,
            }));
        }
        if upper.starts_with("SHOW COMPACTION ST") {
            return Some(NodedbStatement::Cluster(ClusterStmt::ShowCompactionStatus));
        }
        if upper.starts_with("SHOW STORAGE") {
            let collection = parts.get(2).map(|s| s.to_string());
            return Some(NodedbStatement::Cluster(ClusterStmt::ShowStorage {
                collection,
            }));
        }
        None
    })()
    .map(Ok)
}