protected byte[] getBlobOrNull(Cursor c, int col) {
		return c.isNull(col) ? null : c.getBlob(col);
	}
protected byte[] getBlobOrNull(Cursor c, int col) {
		return c.isNull(col) ? null : c.getBlob(col);
	}
protected byte [ ] getBlobOrNull ( Cursor c , int col ) { return c . isNull ( col ) ? null : c . getBlob ( col ) ; }
/*
Cursor wrapper methods which bind to primitive type columns
and return the corresponding wrapper type which may be null
/ * Cursor wrapper methods which bind to primitive type columns and return the corresponding wrapper type which may be null