private void InitObjectStore()
{
// Does the file already exist?
bool blobStoreExists = StoreSystem.StoreExists(ObjectStoreName);
// If the blob store doesn't exist and we are read_only, we can't do
// anything further so simply return.
if (!blobStoreExists && IsReadOnly)
{
return;
}
// The blob store,
// TODO: Support store-level configuration?
if (blobStoreExists)
{
lobStore = StoreSystem.OpenStore(ObjectStoreName, new Configuration());
}
else
{
lobStore = StoreSystem.CreateStore(ObjectStoreName, new Configuration());
}
try {
lobStore.Lock();
// TODO: have multiple BLOB stores
LargeObjectStore = new LargeObjectStore(0, lobStore);
// Get the 64 byte fixed area
var fixedArea = lobStore.GetArea(-1, false);
// If the blob store didn't exist then we need to create it here,
if (!blobStoreExists)
{
long headerP = LargeObjectStore.Create();
fixedArea.Write(headerP);
fixedArea.Flush();
}
else
{
// Otherwise we need to initialize the blob store
long headerP = fixedArea.ReadInt64();
LargeObjectStore.Open(headerP);
}
} finally {
lobStore.Unlock();
}
}
private void CreateTable()
{
// Initially set the table sequence_id to 1
sequenceId = 1;
// Create and open the store.
// TODO: have a table-level configuration?
Store = StoreSystem.CreateStore(StoreName, new Configuration());
try {
Store.Lock();
// Setup the list structure
recordList = new FixedRecordList(Store, 12);
} finally {
Store.Unlock();
}
// Initialize the store to an empty state,
SetupInitialStore();
indexSetStore.PrepareIndexes(TableInfo.Columns.Count + 1, 1, 1024);
}
private void MinimalCreate(IEnumerable <ISystemFeature> features)
{
if (Exists())
{
throw new IOException("Composite already exists");
}
// Lock the store system (generates an IOException if exclusive Lock
// can not be made).
if (!IsReadOnly)
{
StoreSystem.Lock(StateStoreName);
}
// Create/Open the state store
// TODO: Support store-level configuration?
stateStore = StoreSystem.CreateStore(StateStoreName, new Configuration());
try {
stateStore.Lock();
StateStore = new TableStateStore(stateStore);
long headP = StateStore.Create();
// Get the fixed area
var fixedArea = stateStore.GetArea(-1);
fixedArea.Write(headP);
fixedArea.Flush();
} finally {
stateStore.Unlock();
}
Setup();
// Init the conglomerate blob store
InitObjectStore();
// Create the system table (but don't initialize)
CreateSystem(features);
}
internal void MinimalCreate()
{
if (Exists())
{
throw new IOException("Composite already exists");
}
// Lock the store system (generates an IOException if exclusive Lock
// can not be made).
if (!IsReadOnly)
{
StoreSystem.Lock(StateStoreName);
}
// Create/Open the state store
stateStore = StoreSystem.CreateStore(StateStoreName);
try {
stateStore.Lock();
StateStore = new TableStateStore(stateStore);
long headP = StateStore.Create();
// Get the fixed area
var fixedArea = stateStore.GetArea(-1);
fixedArea.WriteInt8(headP);
fixedArea.Flush();
} finally {
stateStore.Unlock();
}
Setup();
// Init the conglomerate blob store
InitObjectStore();
// Create the system table (but don't initialize)
CreateSystemSchema();
}
