public BPlusTree()
{
var indexFile = "index.dat";
var metadataFile = "metadata.dat";
var dataFile = "data.dat";
//if (File.Exists(indexFile))
// File.Delete(indexFile);
//if (File.Exists(metadataFile))
// File.Delete(metadataFile);
//if (File.Exists(dataFile))
// File.Delete(dataFile);
//indexStream = new MemoryStream();
//var dataStream = new MemoryStream();
var metadataStream = new FileStream(metadataFile, FileMode.OpenOrCreate);
indexStream = new FileStream(indexFile, FileMode.OpenOrCreate);
//indexStream = new FileStream(indexFile, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None, 4096,
// FileOptions.WriteThrough | FileOptions.RandomAccess);
//var mmf = MemoryMappedFile.CreateFromFile(indexFile, FileMode.Open, "index", 0, MemoryMappedFileAccess.ReadWrite);
//indexStream = mmf.CreateViewStream();
var dataStream = new FileStream(dataFile, FileMode.OpenOrCreate);
var appendBpTree = new BPlusTree<int>(metadataStream, indexStream,
dataStream, 128, 0, 0, serializer);
tree = new String_BPlusTree<int>(appendBpTree);
}
public BPlusTree_WriteOnly()
{
var indexFile = "index.dat";
var metadataFile = "metadata.dat";
var dataFile = "data.dat";
if (File.Exists(indexFile))
{
File.Delete(indexFile);
}
if (File.Exists(metadataFile))
{
File.Delete(metadataFile);
}
if (File.Exists(dataFile))
{
File.Delete(dataFile);
}
//indexStream = new MemoryStream();
//var dataStream = new MemoryStream();
metadataStream = new FileStream(metadataFile, FileMode.OpenOrCreate);
indexStream = new FileStream(indexFile, FileMode.OpenOrCreate);
//indexStream = new FileStream(indexFile, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None, 4096,
// FileOptions.WriteThrough | FileOptions.RandomAccess);
//var mmf = MemoryMappedFile.CreateFromFile(indexFile, FileMode.Open, "index", 0, MemoryMappedFileAccess.ReadWrite);
//indexStream = mmf.CreateViewStream();
dataStream = new FileStream(dataFile, FileMode.OpenOrCreate);
var appendBpTree = new BPlusTree <int>(metadataStream, indexStream,
dataStream, 128, 0, 0, serializer);
tree = new String_BPlusTree <int>(appendBpTree);
}
public BPlusTree_Azure()
{
var container_Name = "bplustree";
var indexFile = "index.dat";
var metadataFile = "metadata.dat";
var dataFile = "data.dat";
//if (File.Exists(indexFile))
// File.Delete(indexFile);
//if (File.Exists(metadataFile))
// File.Delete(metadataFile);
//if (File.Exists(dataFile))
// File.Delete(dataFile);
long maxValue = uint.MaxValue - uint.MaxValue % 512;
var account = CloudStorageAccount.DevelopmentStorageAccount;
account = new CloudStorageAccount(new StorageCredentialsAccountAndKey("valeriob", "2SzgTAaG11U0M1gQ19SNus/vv1f0efwYOwZHL1w9YhTKEYsU1ul+s/ke92DOE1wIeCKYz5CuaowtDceUvZW2Rw=="),true);
var blobClient = account.CreateCloudBlobClient();
var container = blobClient.GetContainerReference(container_Name);
container.CreateIfNotExist();
var indexBlob = container.GetPageBlobReference(indexFile);
indexBlob.DeleteIfExists();
indexBlob.Create(maxValue);
var indexStream = new Aligned_PageBlobStream(indexBlob);
var metadataBlob = container.GetPageBlobReference(metadataFile);
metadataBlob.DeleteIfExists();
metadataBlob.Create(maxValue);
var metadataStream = new Aligned_PageBlobStream(metadataBlob);
var dataBlob = container.GetPageBlobReference(dataFile);
dataBlob.DeleteIfExists();
dataBlob.Create(maxValue);
var dataStream = new Aligned_PageBlobStream(dataBlob);
var appendBpTree = new BPlusTree<int>(metadataStream, indexStream, dataStream, 128, 512, 0 , serializer);
tree = new String_BPlusTree<int>(appendBpTree);
}