public static IMappedBlock NewMappedBlock(IndexSetStore indexSetStore, long firstEntry, long lastEntry,
long blockPointer,
int size, byte compactType, int blockSize)
{
return(new MappedBlock(indexSetStore, firstEntry, lastEntry, blockPointer, size, compactType,
blockSize));
}
public SnapshotIndexSet(IndexSetStore indexSetStore, IndexBlock[] blocks)
{
this.indexSetStore = indexSetStore;
indexBlocks = blocks;
// Not disposed.
disposed = false;
}
public Index(IndexSetStore indexSetStore, int indexNumber, int maxBlockSize,
IEnumerable <ICollectionBlock <SqlObject, long> > blocks)
: base(blocks)
{
IndexSetStore = indexSetStore;
IndexNumber = indexNumber;
MaxBlockSize = maxBlockSize;
deletedBlocks = new List <IMappedBlock>();
}
public void CreateAndOpenStore()
{
var indexSetStore = new IndexSetStore(store);
var pointer = indexSetStore.Create();
Assert.True(pointer >= 0);
indexSetStore.Open(pointer);
indexSetStore.Dispose();
}
public MappedBlock(IndexSetStore indexSetStore, long firstEntry, long lastEntry, long blockPointer,
int size, byte compactType, int maxBlockSize)
{
IndexSetStore = indexSetStore;
FirstEntry = firstEntry;
LastEntry = lastEntry;
BlockPointer = blockPointer;
CompactType = compactType;
this.maxBlockSize = maxBlockSize;
Count = size;
BaseArray = null;
}
internal IndexBlock(IndexSetStore indexSetStore, int indexNum, int blockSize, long startOffset)
{
this.indexSetStore = indexSetStore;
this.indexNum = indexNum;
BlockSize = blockSize;
StartOffset = startOffset;
// Read the index count
var indexBlockArea = indexSetStore.Store.GetArea(startOffset);
indexBlockArea.Position = 8;
blockEntries = indexBlockArea.ReadInt64();
refCount = 0;
}
private void Dispose(bool disposing)
{
if (!disposed)
{
if (disposing)
{
if (deletedBlocks != null)
{
deletedBlocks.Clear();
}
}
IndexSetStore = null;
deletedBlocks = null;
disposed = true;
}
}
public void GetSnapshotIndex()
{
var indexSetStore = new IndexSetStore(store);
var pointer = indexSetStore.Create();
indexSetStore.Open(pointer);
var indexSet = indexSetStore.GetSnapshotIndex();
Assert.NotNull(indexSet);
Assert.Empty(indexSet);
indexSet.Dispose();
indexSetStore.Dispose();
}
public void Dispose()
{
if (FieldCache != null)
{
FieldCache.Clear();
}
if (headerArea != null)
{
headerArea.Dispose();
}
if (recordList != null)
{
recordList.Dispose();
}
if (Registries != null)
{
Registries.Dispose();
}
if (indexSetStore != null)
{
indexSetStore.Dispose();
}
if (Store != null)
{
if (StoreSystem.CloseStore(Store))
{
Store.Dispose();
}
}
headerArea = null;
recordList = null;
Registries = null;
indexSetStore = null;
}
private void SetupInitialStore()
{
byte[] tableInfoBuf;
using (var stream = new MemoryStream()) {
var writer = new BinaryWriter(stream, Encoding.Unicode);
writer.Write(1);
TableInfoSerializer.Serialize(TableInfo, writer);
tableInfoBuf = stream.ToArray();
}
byte[] indexSetInfoBuf;
using (var stream = new MemoryStream()) {
var writer = new BinaryWriter(stream, Encoding.Unicode);
writer.Write(1);
IndexSetInfoSerializer.Serialize(IndexSetInfo, writer);
indexSetInfoBuf = stream.ToArray();
}
try {
Store.Lock();
// Allocate an 80 byte header
using (var headerWriter = Store.CreateArea(80)) {
long headerPointer = headerWriter.Id;
// Allocate space to store the DataTableInfo serialization
using (var dataTableDefWriter = Store.CreateArea(tableInfoBuf.Length)) {
long tableInfoOffset = dataTableDefWriter.Id;
// Allocate space to store the DataIndexSetInfo serialization
using (var indexSetWriter = Store.CreateArea(indexSetInfoBuf.Length)) {
long indexSetInfoPointer = indexSetWriter.Id;
// Allocate space for the list header
listHeaderOffset = recordList.Create();
recordList.WriteDeleteHead(-1);
firstDeleteChainRecord = -1;
// Create the index store
indexSetStore = new IndexSetStore(Store);
indexHeaderOffset = indexSetStore.Create();
// Write the main header
headerWriter.Write((int)1); // Version
headerWriter.Write(TableId); // table id
headerWriter.Write(sequenceId); // initial sequence id
headerWriter.Write(tableInfoOffset); // pointer to DataTableInfo
headerWriter.Write(indexSetInfoPointer); // pointer to DataIndexSetInfo
headerWriter.Write(indexHeaderOffset); // index header pointer
headerWriter.Write(listHeaderOffset); // list header pointer
headerWriter.Flush();
// Write the table info
dataTableDefWriter.Write(tableInfoBuf, 0, tableInfoBuf.Length);
dataTableDefWriter.Flush();
// Write the index set info
indexSetWriter.Write(indexSetInfoBuf, 0, indexSetInfoBuf.Length);
indexSetWriter.Flush();
// Set the pointer to the header input the reserved area.
using (var fixedArea = Store.GetArea(-1)) {
fixedArea.Write(headerPointer);
fixedArea.Flush();
}
// Set the header area
headerArea = Store.GetArea(headerPointer);
}
}
}
} finally {
Store.Unlock();
}
}
