private Item1 Obtain(string name, int structureType, DataType keyDataType, DataType recordDataType, Type keyType, Type recordType)
{
Debug.Assert(keyDataType != null);
Debug.Assert(recordDataType != null);
Item1 item;
if (!map.TryGetValue(name, out item))
{
if (keyType == null)
{
keyType = DataTypeUtils.BuildType(keyDataType);
}
if (recordType == null)
{
recordType = DataTypeUtils.BuildType(recordDataType);
}
var locator = CreateLocator(name, structureType, keyDataType, recordDataType, keyType, recordType);
XTable table = new XTable(this, locator);
map[name] = item = new Item1(locator, table);
}
else
{
var locator = item.Locator;
if (locator.StructureType != structureType)
{
throw new ArgumentException(String.Format("Invalid structure type for '{0}'", name));
}
if (keyDataType != locator.KeyDataType)
{
throw new ArgumentException("keyDataType");
}
if (recordDataType != locator.RecordDataType)
{
throw new ArgumentException("recordDataType");
}
if (locator.KeyType == null)
{
locator.KeyType = DataTypeUtils.BuildType(keyDataType);
}
else
{
if (keyType != null && keyType != locator.KeyType)
{
throw new ArgumentException(String.Format("Invalid keyType for table '{0}'", name));
}
}
if (locator.RecordType == null)
{
locator.RecordType = DataTypeUtils.BuildType(recordDataType);
}
else
{
if (recordType != null && recordType != locator.RecordType)
{
throw new ArgumentException(String.Format("Invalid recordType for table '{0}'", name));
}
}
locator.AccessTime = DateTime.Now;
}
if (!item.Locator.IsReady)
{
item.Locator.Prepare();
}
if (item.Table == null)
{
item.Table = new XTable(this, item.Locator);
}
return(item);
}
public Item1(Locator locator, XTable table)
{
Locator = locator;
Table = table;
}