Struct Database 

pub struct Database<T, SecondaryKey = ()>
where
    T: CandidType + Serialize + for<'de> Deserialize<'de> + Clone,
    SecondaryKey: Clone + Ord + Storable,
{ /* private fields */ }

Database implementation with support for primary and secondary indexes

Implementations

impl<T, SecondaryKey> Database<T, SecondaryKey>

where T: CandidType + Serialize + for<'de> Deserialize<'de> + Clone, SecondaryKey: Storable + Ord + Clone,

pub fn new( map: RefCell<StableBTreeMap<CompositeKey, Document<T>, Memory>>, secondary_index: Option<RefCell<StableBTreeMap<SecondaryKey, CompositeKeys, Memory>>>, get_secondary_key: Option<Box<dyn Fn(&T) -> Option<SecondaryKey>>>, ) -> Self

Constructor to initialize the NoSQL database with an optional secondary index

pub fn insert( &self, partition_key: String, sort_key: Option<String>, data: T, ) -> Result<Document<T>, String>

Insert a document and update secondary index if applicable

pub fn get( &self, partition_key: &str, sort_key: Option<String>, ) -> Result<Document<T>, String>

Get a single document by partition key and optional sort key

pub fn query( &self, partition_key: Option<&str>, secondary_key: Option<SecondaryKey>, page_size: usize, page_number: usize, ) -> Result<QueryResponse<T>, String>

Query by either partition key or secondary index with pagination