public XbimReadWriteTransaction BeginTransaction(string operationName)
{
if (InverseCache != null)
{
throw new XbimException("Transaction can't be open when cache is in operation.");
}
if (_editTransactionEntityCursor != null)
{
throw new XbimException("Attempt to begin another transaction whilst one is already running");
}
try
{
//check if write permission upgrade is required
_editTransactionEntityCursor = InstanceCache.GetWriteableEntityTable();
InstanceCache.BeginCaching();
var txn = new XbimReadWriteTransaction(this, _editTransactionEntityCursor.BeginLazyTransaction(), operationName);
CurrentTransaction = txn;
return(txn);
}
catch (Exception e)
{
throw new XbimException("Failed to create ReadWrite transaction", e);
}
}
internal void EndTransaction()
{
//FreeTable(_editTransactionEntityCursor); //release the cursor back to the pool
InstanceCache.EndCaching();
_editTransactionEntityCursor.Dispose();
_editTransactionEntityCursor = null;
}
internal P21ToIndexParser(Stream inputP21, long streamSize, EsentEntityCursor table, PersistedEntityInstanceCache cache, int codePageOverride = -1)
: base(inputP21)
{
this._table = table;
// this.transaction = transaction;
_modelCache = cache;
_entityCount = 0;
_streamSize = streamSize;
_codePageOverride = codePageOverride;
}
public XbimInstancesEntityEnumerator(PersistedEntityInstanceCache cache)
{
this.cache = cache;
cursor = cache.GetEntityTable();
Reset();
}
/// <summary>
/// Returns the table to the cache for reuse
/// </summary>
/// <param name="table"></param>
public void FreeTable(EsentEntityCursor table)
{
InstanceCache.FreeTable(table);
}