Module holochain_state::query

Re-exports

• pub use error::*;

Modules

• chain_head
• entry_details
• error
• link
• link_count
• link_details
• live_entry
• live_record
• prelude
• record_details

Structs

• DbScratch
• DbScratchIter
• Maps
  A common accumulator type used by folds to collapse queries down to a simpler structure, i.e. to let deletions annihilate creations.
• QueryStmt
  A collection of prepared SQL statements used to perform a cascade query on a particular database.
• QueryStmts
• Txn
  Wrapper around a transaction reference, to which trait impls are attached
• Txns
  Wrapper around a collection of Txns, to which trait impls are attached

Traits

• PrivateDataQuery
  Queries that can have access to private data will implement this trait.
• Query
  You should keep your query type cheap to clone. If there is any large data put it in an Arc.
• Store
• Stores
  Represents the data sources which are needed to perform a Query. From these sources, we need:
• StoresIter
  Each Stores implementation has its own custom way of iterating over itself, which this trait represents.

Functions

• from_blob
  Deserialize a BLOB from a database into a value
• get_entry_from_db
  Fetch an Entry from a DB by its hash. Requires no joins.
• get_public_entry_from_db
  Fetch a public Entry from a DB by its hash.
• get_public_op_from_db
  Get a DhtOp from the database filtering out private entries and DhtOp::StoreEntry where the entry is private. The ops are suitable for publishing / gossiping.
• map_sql_dht_op_common
• row_blob_and_hash_to_action
• row_blob_to_action
• to_blob
  Serialize a value to be stored in a database as a BLOB type

Type Aliases

• Params
  Alias for the params required by rusqlite query execution
• QueryData
  Helper for getting to the inner Data type of the Item of a Query
• Transactions
  Alias for an array of Transaction references