public void TestReadWrite()
{
MemoryStream stream = new MemoryStream();
BinaryWriter writer = new BinaryWriter(stream);
BinaryReader reader = new BinaryReader(stream);
PostingListEncoder encoder = new PostingListEncoder();
List<Posting> postings = new List<Posting>();
postings.Add(new Posting(DocA, 23));
postings.Add(new Posting(DocB, 23));
encoder.write(writer, postings);
stream.Seek(0, SeekOrigin.Begin);
IList<Posting> readPostings = encoder.read(reader);
Assert.AreEqual(postings.Count, readPostings.Count);
for (int postingIndex = 0; postingIndex < postings.Count; postingIndex++)
{
Assert.AreEqual(postings[postingIndex].Frequency, readPostings[postingIndex].Frequency);
Assert.AreEqual(postings[postingIndex].DocumentId, readPostings[postingIndex].DocumentId);
}
}
public string FlushToFile()
{
string filename = Path.GetTempFileName();
SortedList<string, SortedList<long, Posting>> orderedEntries = index.Entries;
using (FileStream fs = File.Open(filename, FileMode.Append))
{
PostingListEncoder encoder = new PostingListEncoder();
BinaryWriter writer = new BinaryWriter(fs);
writer.Write((Int32)orderedEntries.Count);
foreach (KeyValuePair<string, SortedList<long, Posting>> termPostingsPair in orderedEntries)
{
writer.Write((string)termPostingsPair.Key);
encoder.write(writer, termPostingsPair.Value.Values);
}
}
this.index = new MemoryIndex();
return filename;
}