internal StreamInfoCore CoreForChildStream( string streamName )
{
CheckDisposedStatus();
object childElement = core.elementInfoCores[ streamName ];
if( null != childElement &&
null == childElement as StreamInfoCore )
{
// Name is already in use, but not as a StreamInfo
throw new InvalidOperationException(
SR.Get(SRID.NameAlreadyInUse, streamName ));
}
else if( null == childElement )
{
// No such element with the name exist - create one.
//
// Check to see if there is a data space mapping on this guy
DataSpaceManager manager = Root.GetDataSpaceManager();
if( null != manager )
{
// Have data space manager - retrieve data space label for
// the child stream. The data space manager will return
// null if there isn't a data space associated with this
// stream.
childElement = new StreamInfoCore(
streamName,
manager.DataSpaceOf(
new CompoundFileStreamReference( FullNameInternal, streamName ) ) );
}
else
{
// Data space manager not yet initialized - correct behavior
// is that nothing transformed should be required at this
// point but in case of incorrect behavior we can not possibly
// recover. User gets un-transformed data instead.
childElement = new StreamInfoCore( streamName, null, null );
}
core.elementInfoCores[ streamName ] = childElement;
}
Debug.Assert( null != childElement as StreamInfoCore,
"We should have already checked to make sure childElement is either StreamInfoCore, created as one, or thrown an exception if neither is possible");
return childElement as StreamInfoCore;
}
/***********************************************************************/
// Constructors
private void BuildStreamInfoRelativeToStorage(StorageInfo parent, string path)
{
parentStorage = parent;
core = parentStorage.CoreForChildStream(path);
}
/***********************************************************************/
// Constructors
private void BuildStreamInfoRelativeToStorage( StorageInfo parent, string path )
{
parentStorage = parent;
core = parentStorage.CoreForChildStream( path );
}