public void ContainerIndex_EndToEnd()
{
string jsonFilePath = @"Content\Medium.json";
string bionFilePath = Path.ChangeExtension(jsonFilePath, ".bion");
string dictionaryPath = Path.ChangeExtension(bionFilePath, "dict.bion");
string comparePath = Path.ChangeExtension(jsonFilePath, "compare.json");
JsonBionConverter.JsonToBion(jsonFilePath, bionFilePath, dictionaryPath);
using (WordCompressor compressor = WordCompressor.OpenRead(dictionaryPath))
using (ContainerIndex cIndex = ContainerIndex.OpenRead(Path.ChangeExtension(bionFilePath, ".cdx")))
using (BionReader reader = new BionReader(File.OpenRead(bionFilePath), cIndex, compressor))
{
for (int i = 0; i < cIndex.Count; ++i)
{
ContainerEntry container = cIndex[i];
// Seek to container start
reader.Seek(container.StartByteOffset);
// Verify a container start is there
int depth = reader.Depth;
reader.Read();
bool isObject = (reader.TokenType == BionToken.StartObject);
Assert.AreEqual((isObject ? BionToken.StartObject : BionToken.StartArray), reader.TokenType);
// Read until the depth is back to the same value
while (reader.Depth != depth)
{
reader.Read();
}
// Verify this is the end container position
Assert.AreEqual((isObject ? BionToken.EndObject : BionToken.EndArray), reader.TokenType);
Assert.AreEqual(container.EndByteOffset, reader.BytesRead);
}
}
}
public int Write(JsonTextWriter writer, ISearchResult wordMatches, int skip = 0, int take = -1)
{
int matchCount = 0;
ContainerEntry lastRun = ContainerEntry.Empty;
ContainerEntry lastResult = ContainerEntry.Empty;
while (!wordMatches.Done)
{
int count = wordMatches.Page(ref _termPositions);
for (int i = 0; i < count; ++i)
{
long position = _termPositions[i];
// If this position isn't in the last run's results array, find the run which contains it
if (!lastRun.Contains(position))
{
// Close previous run, if any
if (!lastRun.IsEmpty())
{
WriteRunSubsetEnd(writer);
}
// Find containing run
lastRun = FindContainerAtDepth(position, _runDepth);
// Write run subset
_bionReader.Seek(lastRun.StartByteOffset);
WriteRunSubsetStart(writer);
}
// Find and write result
ContainerEntry result = FindContainerAtDepth(position, _runDepth + 2);
if (!result.IsEmpty() && !lastResult.Equals(result))
{
matchCount++;
if (matchCount <= skip)
{
continue;
}
_bionReader.Seek(result.StartByteOffset);
JsonBionConverter.BionToJson(_bionReader, writer);
if (take >= 0 && matchCount >= skip + take)
{
break;
}
}
}
if (take >= 0 && matchCount >= skip + take)
{
break;
}
}
// Close last run, if any
if (!lastRun.IsEmpty())
{
WriteRunSubsetEnd(writer);
}
return(matchCount);
}