agdb 0.12.10

Agnesoft Graph Database
Documentation 
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use crate::DbError;
use crate::DbImpl;
use crate::DbValue;
use crate::QueryMut;
use crate::QueryResult;
use crate::StorageData;

/// Query to create a new index on
/// a given key.
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "openapi", derive(utoipa::ToSchema))]
#[cfg_attr(feature = "derive", derive(agdb::DbSerialize))]
#[cfg_attr(feature = "api", derive(agdb::TypeDefImpl))]
#[derive(Clone, Debug, PartialEq)]
pub struct RemoveIndexQuery(pub DbValue);

impl QueryMut for RemoveIndexQuery {
    fn process<Store: StorageData>(&self, db: &mut DbImpl<Store>) -> Result<QueryResult, DbError> {
        let value_count = db.remove_index(&self.0)?;

        Ok(QueryResult {
            result: -(value_count as i64),
            elements: vec![],
        })
    }
}

impl QueryMut for &RemoveIndexQuery {
    fn process<Store: StorageData>(&self, db: &mut DbImpl<Store>) -> Result<QueryResult, DbError> {
        (*self).process(db)
    }
}