IRecordSequence.ReserveAndAppend Method
Definition
Important
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When overridden in a derived class, automatically makes a single reservation and appends a record to the sequence.
Overloads
| ReserveAndAppend(ArraySegment<Byte>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, Int64[]) |
When overridden in a derived class, automatically makes a single reservation and appends a record to the sequence. |
| ReserveAndAppend(IList<ArraySegment<Byte>>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, Int64[]) |
When overridden in a derived class, automatically makes a single reservation and appends a record to the sequence. |
ReserveAndAppend(ArraySegment<Byte>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, Int64[])
When overridden in a derived class, automatically makes a single reservation and appends a record to the sequence.
public:
System::IO::Log::SequenceNumber ReserveAndAppend(ArraySegment<System::Byte> data, System::IO::Log::SequenceNumber nextUndoRecord, System::IO::Log::SequenceNumber previousRecord, System::IO::Log::RecordAppendOptions recordAppendOptions, System::IO::Log::ReservationCollection ^ reservationCollection, ... cli::array <long> ^ reservations);public System.IO.Log.SequenceNumber ReserveAndAppend (ArraySegment<byte> data, System.IO.Log.SequenceNumber nextUndoRecord, System.IO.Log.SequenceNumber previousRecord, System.IO.Log.RecordAppendOptions recordAppendOptions, System.IO.Log.ReservationCollection reservationCollection, params long[] reservations);abstract member ReserveAndAppend : ArraySegment<byte> * System.IO.Log.SequenceNumber * System.IO.Log.SequenceNumber * System.IO.Log.RecordAppendOptions * System.IO.Log.ReservationCollection * int64[] -> System.IO.Log.SequenceNumberPublic Function ReserveAndAppend (data As ArraySegment(Of Byte), nextUndoRecord As SequenceNumber, previousRecord As SequenceNumber, recordAppendOptions As RecordAppendOptions, reservationCollection As ReservationCollection, ParamArray reservations As Long()) As SequenceNumberParameters
- data
- ArraySegment<Byte>
A list of byte array segments that will be concatenated and appended as the record.
- nextUndoRecord
- SequenceNumber
The sequence number of the next record in the user-specified order.
- previousRecord
- SequenceNumber
The sequence number of the next record in Previous order.
- recordAppendOptions
- RecordAppendOptions
A valid value of RecordAppendOptions that specifies how the data should be written.
- reservationCollection
- ReservationCollection
A ReservationCollection that contains the collection to make reservations in.
- reservations
- Int64[]
The reservations to make, in bytes.
Returns
The sequence number of the appended log record.
Exceptions
One or more of the arguments is invalid.
An I/O error occurred while appending the record.
The record sequence could not make enough free space to contain the new record, or to make the reservation.
The method was called after the sequence has been disposed of.
Remarks
Data contained in the data parameter will be concatenated into a single byte array for appending as the record. However, no provision is made for splitting data back into array segments when the record is read.
The specified reservations are added to the provided reservation collection in an atomic operation with a record append operation. If the append fails, no space is reserved.
Normally, this method may complete before the record has been written. To ensure that a record has been written, either specify the ForceFlush flag using the recordAppendOptions parameter, or call the Flush method.
Applies to
ReserveAndAppend(IList<ArraySegment<Byte>>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, Int64[])
When overridden in a derived class, automatically makes a single reservation and appends a record to the sequence.
public:
System::IO::Log::SequenceNumber ReserveAndAppend(System::Collections::Generic::IList<ArraySegment<System::Byte>> ^ data, System::IO::Log::SequenceNumber nextUndoRecord, System::IO::Log::SequenceNumber previousRecord, System::IO::Log::RecordAppendOptions recordAppendOptions, System::IO::Log::ReservationCollection ^ reservationCollection, ... cli::array <long> ^ reservations);public System.IO.Log.SequenceNumber ReserveAndAppend (System.Collections.Generic.IList<ArraySegment<byte>> data, System.IO.Log.SequenceNumber nextUndoRecord, System.IO.Log.SequenceNumber previousRecord, System.IO.Log.RecordAppendOptions recordAppendOptions, System.IO.Log.ReservationCollection reservationCollection, params long[] reservations);abstract member ReserveAndAppend : System.Collections.Generic.IList<ArraySegment<byte>> * System.IO.Log.SequenceNumber * System.IO.Log.SequenceNumber * System.IO.Log.RecordAppendOptions * System.IO.Log.ReservationCollection * int64[] -> System.IO.Log.SequenceNumberPublic Function ReserveAndAppend (data As IList(Of ArraySegment(Of Byte)), nextUndoRecord As SequenceNumber, previousRecord As SequenceNumber, recordAppendOptions As RecordAppendOptions, reservationCollection As ReservationCollection, ParamArray reservations As Long()) As SequenceNumberParameters
- data
- IList<ArraySegment<Byte>>
A list of byte array segments that will be concatenated and appended as the record.
- nextUndoRecord
- SequenceNumber
The sequence number of the next record in the user-specified order.
- previousRecord
- SequenceNumber
The sequence number of the next record in Previous order.
- recordAppendOptions
- RecordAppendOptions
A valid value of RecordAppendOptions that specifies how the data should be written.
- reservationCollection
- ReservationCollection
The reservation collection to make reservations in.
- reservations
- Int64[]
The reservations to make, in bytes.
Returns
The sequence number of the appended log record.
Exceptions
One or more of the arguments is invalid.
An I/O error occurred while appending the record.
The record sequence could not make enough free space to contain the new record, or to make the reservation.
The method was called after the sequence has been disposed of.
Remarks
Data contained in the data parameter will be concatenated into a single byte array for appending as the record. However, no provision is made for splitting data back into array segments when the record is read.
The specified reservations are added to the provided reservation collection in an atomic operation with a record append operation. If the append fails, no space is reserved.
Normally, this method may complete before the record has been written. To ensure that a record has been written, either specify the ForceFlush flag using the recordAppendOptions parameter, or call the Flush method.
