Class: FDB::Transaction

Inherits:
TransactionRead show all
Defined in:
lib/fdbimpl.rb

Instance Attribute Summary collapse

Attributes inherited from TransactionRead

#db, #tpointer

Instance Method Summary collapse

Methods inherited from TransactionRead

finalize, #get, #get_key, #get_range, #get_range_start_with, #get_read_version, #transact

Constructor Details

#initialize(tpointer, db) ⇒ Transaction

Returns a new instance of Transaction.



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# File 'lib/fdbimpl.rb', line 863

def initialize(tpointer, db)
  super(tpointer, db, 0)
  @snapshot = TransactionRead.new(tpointer, db, 1)

  @options = TransactionOptions.new lambda { |code, param|
    FDBC.check_error FDBC.fdb_transaction_set_option(@tpointer, code, param, param.nil? ? 0 : param.bytesize)
  }

  ObjectSpace.undefine_finalizer self
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/fdbimpl.rb', line 861

def options
  @options
end

#snapshot ⇒ Object (readonly)

Returns the value of attribute snapshot.



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# File 'lib/fdbimpl.rb', line 861

def snapshot
  @snapshot
end

Instance Method Details

#add_read_conflict_key(key) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 887

def add_read_conflict_key(key)
  key = FDB.key_to_bytes(key)
  add_read_conflict_range(key, key + "\x00")
end

#add_read_conflict_range(bkey, ekey) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 881

def add_read_conflict_range(bkey, ekey)
  bkey = FDB.key_to_bytes(bkey)
  ekey = FDB.key_to_bytes(ekey)
  FDBC.check_error FDBC.fdb_transaction_add_conflict_range(@tpointer, bkey, bkey.bytesize, ekey, ekey.bytesize, @@ConflictRangeType["READ"][0])
end

#add_write_conflict_key(key) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 898

def add_write_conflict_key(key)
  key = FDB.key_to_bytes(key)
  add_write_conflict_range(key, key + "\x00")
end

#add_write_conflict_range(bkey, ekey) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 892

def add_write_conflict_range(bkey, ekey)
  bkey = FDB.key_to_bytes(bkey)
  ekey = FDB.key_to_bytes(ekey)
  FDBC.check_error FDBC.fdb_transaction_add_conflict_range(@tpointer, bkey, bkey.bytesize, ekey, ekey.bytesize, @@ConflictRangeType["WRITE"][0])
end

#cancel ⇒ Object 



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# File 'lib/fdbimpl.rb', line 952

def cancel
  FDBC.fdb_transaction_cancel @tpointer
end

#clear(key) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 917

def clear(key)
  key = FDB.key_to_bytes(key)
  FDBC.fdb_transaction_clear(@tpointer, key, key.bytesize)
end

#clear_range(bkey, ekey) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 922

def clear_range(bkey, ekey)
  bkey = FDB.key_to_bytes(bkey)
  ekey = FDB.key_to_bytes(ekey)
  FDBC.fdb_transaction_clear_range(@tpointer, bkey || "", bkey && bkey.bytesize || 0, ekey || "", ekey && ekey.bytesize || 0)
end

#clear_range_start_with(prefix) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 928

def clear_range_start_with(prefix)
  prefix = FDB.key_to_bytes(prefix)
  prefix = prefix.dup.force_encoding "BINARY"
  clear_range(prefix, FDB.strinc(prefix))
end

#commit ⇒ Object 



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# File 'lib/fdbimpl.rb', line 903

def commit
  FutureNil.new(FDBC.fdb_transaction_commit(@tpointer))
end

#get_committed_version ⇒ Object 



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# File 'lib/fdbimpl.rb', line 938

def get_committed_version
  version = FFI::MemoryPointer.new :int64
  FDBC.check_error FDBC.fdb_transaction_get_committed_version(@tpointer, version)
  version.read_long_long
end

#get_versionstamp ⇒ Object 



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# File 'lib/fdbimpl.rb', line 944

def get_versionstamp
  Key.new(FDBC.fdb_transaction_get_versionstamp(@tpointer))
end

#on_error(e) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 912

def on_error(e)
  raise e if !e.kind_of? Error
  FutureNil.new(FDBC.fdb_transaction_on_error(@tpointer, e.code))
end

#reset ⇒ Object 



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# File 'lib/fdbimpl.rb', line 948

def reset
  FDBC.fdb_transaction_reset @tpointer
end

#set(key, value) ⇒ Object Also known as: []= 



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# File 'lib/fdbimpl.rb', line 874

def set(key, value)
  key = FDB.key_to_bytes(key)
  value = FDB.value_to_bytes(value)
  FDBC.fdb_transaction_set(@tpointer, key, key.bytesize, value, value.bytesize)
end

#set_read_version(version) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 934

def set_read_version(version)
  FDBC.fdb_transaction_set_read_version(@tpointer, version)
end

#watch(key) ⇒ Object 



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# File 'lib/fdbimpl.rb', line 907

def watch(key)
  key = FDB.key_to_bytes(key)
  FutureNil.new(FDBC.fdb_transaction_watch(@tpointer, key, key.bytesize))
end