class LevelDB::DB

• LevelDB::DB
• Reference
• Object

Defined in:

leveldb/db.cr

Constructors

• .new(path : String, options : Options = Options.new)

Class Method Summary

• .open(path : String, options : Options = Options.new, &)

  RAII-friendly block helper

Instance Method Summary

• #[](key : Bytes | String) : String | Nil

  [] operator for convenient string access

• #close
• #closed? : Bool
• #compact

  Compact the entire database

• #compact_range(start_key : Bytes | String, limit_key : Bytes | String)

  Compact the underlying storage for the key range [start_key, limit_key]

• #create_snapshot : LibLevelDB::Snapshot

  Create a snapshot of the current DB state

• #delete(key : Bytes | String, write_options : WriteOptions = WriteOptions.new)
• #each(&block : Bytes, Bytes -> )

  Iterate over all key-value pairs

• #each_string(&block : String, String -> )

  Iterate over all key-value pairs as strings

• #finalize

  Finalizer is only a safety net; prefer explicit close or block-style open.

• #get(key : Bytes | String, read_options : ReadOptions = ReadOptions.new) : Bytes | Nil
• #get_string(key : Bytes | String, read_options : ReadOptions = ReadOptions.new) : String | Nil
• #iterator(read_options : ReadOptions = ReadOptions.new) : Iterator

  Create an iterator

• #iterator(read_options : ReadOptions = ReadOptions.new, &)

  Block-style iterator usage with ensure close

• #property(name : String) : String | Nil

  Get database property value

• #ptr : LibLevelDB::DB
• #put(key : Bytes | String, value : Bytes | String, write_options : WriteOptions = WriteOptions.new)
• #release_snapshot(snapshot : LibLevelDB::Snapshot)

  Release a snapshot

• #write(batch : WriteBatch, write_options : WriteOptions = WriteOptions.new)

Constructor Detail

Class Method Detail

Instance Method Detail