| public GetData ( String name, NpgsqlTypes.FastpathArg args ) : Byte[] | ||
| name | String | Function name. |
| args | NpgsqlTypes.FastpathArg | Function arguments. |
| Résultat | Byte[] | |
/// <summary>
/// Reads some data from the object, and return as a byte[] array.
/// </summary>
/// <param name="len">Number of bytes to read.</param>
/// <returns>Array containing data read.</returns>
public Byte[] Read(Int32 len)
{
// This is the original method, where the entire block (len bytes)
// is retrieved in one go.
FastpathArg[] args = new FastpathArg[2];
args[0] = new FastpathArg(fd);
args[1] = new FastpathArg(len);
return(fp.GetData("loread", args));
// This version allows us to break this down Int32o 4k blocks
//if (len<=4048) {
//// handle as before, return the whole block in one go
//FastpathArg args[] = new FastpathArg[2];
//args[0] = new FastpathArg(fd);
//args[1] = new FastpathArg(len);
//return fp.getData("loread",args);
//} else {
//// return in 4k blocks
//byte[] buf=new byte[len];
//int off=0;
//while (len>0) {
//int bs=4048;
//len-=bs;
//if (len<0) {
//bs+=len;
//len=0;
//}
//read(buf,off,bs);
//off+=bs;
//}
//return buf;
//}
}
/*
* Reads some data from the object, and return as a byte[] array
*
* @param len number of bytes to read
* @return byte[] array containing data read
* @exception NpgsqlException if a database-access error occurs.
*/
public Byte[] Read(Int32 len)
{
// This is the original method, where the entire block (len bytes)
// is retrieved in one go.
FastpathArg[] args = new FastpathArg[2];
args[0] = new FastpathArg(fd);
args[1] = new FastpathArg(len);
return(fp.GetData("loread", args));
}