C# (CSharp) Org.Neo4j.causalclustering.core.consensus.log.segmented PositionCache.lookup Examples

Example #1

        /// <summary>
        /// Channels must be closed when no longer used, so that they are released back to the pool of readers.
        /// </summary>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: org.neo4j.cursor.IOCursor<org.neo4j.causalclustering.core.consensus.log.EntryRecord> getCursor(long logIndex) throws java.io.IOException, DisposedException
        internal virtual IOCursor <EntryRecord> GetCursor(long logIndex)
        {
            Debug.Assert(logIndex > _header.prevIndex());

            if (!_refCount.increase())
            {
                throw new DisposedException();
            }

            /* This is the relative index within the file, starting from zero. */
            long offsetIndex = logIndex - (_header.prevIndex() + 1);

            LogPosition position = _positionCache.lookup(offsetIndex);
            Reader      reader   = _readerPool.acquire(_version, position.ByteOffset);

            try
            {
                long currentIndex = position.LogIndex;
                return(new EntryRecordCursor(reader, _contentMarshal, currentIndex, offsetIndex, this));
            }
            catch (EndOfStreamException)
            {
                _readerPool.release(reader);
                _refCount.decrease();
                return(IOCursor.Empty);
            }
            catch (IOException e)
            {
                reader.Dispose();
                _refCount.decrease();
                throw e;
            }
        }

Example #2

//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldReturnSaneDefaultPosition()
        public virtual void ShouldReturnSaneDefaultPosition()
        {
            // when
            LogPosition position = _cache.lookup(5);

            // then
            assertEquals(_beginning, position);
        }