storm-apt/api/src/main/java/com/turbomanage/storm/TableHelper.java
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