private Boolean closed = false; // true when we are closed
/// <summary>
/// This opens a large object.
/// If the object does not exist, then an NpgsqlException is thrown.
/// </summary>
/// <param name="fp">FastPath API for the connection to use.</param>
/// <param name="oid">OID of the Large Object to open.</param>
/// <param name="mode">Mode of opening the large object</param>
public LargeObject(Fastpath fp, Int32 oid, Int32 mode)
{
this.fp = fp;
this.oid = oid;
FastpathArg[] args = new FastpathArg[2];
args[0] = new FastpathArg(oid);
args[1] = new FastpathArg(mode);
this.fd = fp.GetInteger("lo_open", args);
}
/// <summary>
/// This creates a large object, returning its OID.
/// </summary>
/// <returns>OID of new object.</returns>
public Int32 Create()
{
FastpathArg[] args = new FastpathArg[1];
args[0] = new FastpathArg(READWRITE);
return(fp.GetInteger("lo_creat", args));
}
/// <summary>
/// Report the current position within the object.
/// </summary>
/// <returns>The current position within the object.</returns>
public Int32 Tell()
{
FastpathArg[] args = new FastpathArg[1];
args[0] = new FastpathArg(fd);
return(fp.GetInteger("lo_tell", args));
}
