public BSONIterator FinOne(string cname = null, int qflags = 0)
{
using (EJDBQCursor cur = Find(cname, qflags | JBQRYFINDONE_FLAG)) {
return(cur.Next());
}
}
public int Update(string cname = null, int qflags = 0)
{
using (EJDBQCursor cur = Find(cname, qflags | JBQRYCOUNT_FLAG)) {
return(cur.Length);
}
}
public EJDBQCursor Find(string cname = null, int qflags = 0)
{
CheckDisposed();
if (cname == null)
{
cname = _defaultcollection;
}
if (cname == null)
{
throw new ArgumentException("Collection name must be provided");
}
IntPtr cptr = EJDB._ejdbgetcoll(_jb.DBPtr, cname);
if (cptr == IntPtr.Zero)
{
return(new EJDBQCursor(IntPtr.Zero, 0));
}
if (_dutyhints)
{
SetHints(_hints);
_dutyhints = false;
}
int count;
IntPtr logsptr = IntPtr.Zero;
if ((qflags & EXPLAIN_FLAG) != 0)
{
//static extern IntPtr _tcxstrnew();
logsptr = _tcxstrnew(); //Create dynamic query execution log buffer
}
EJDBQCursor cur = null;
try {
//static extern IntPtr _ejdbqryexecute([In] IntPtr jcoll, [In] IntPtr q, out int count, [In] int qflags, [In] IntPtr logxstr);
IntPtr qresptr = _ejdbqryexecute(cptr, _qptr, out count, qflags, logsptr);
cur = new EJDBQCursor(qresptr, count);
} finally {
if (logsptr != IntPtr.Zero)
{
try {
if (cur != null)
{
//static extern IntPtr _tcxstrptr([In] IntPtr strptr);
IntPtr sbptr = _tcxstrptr(logsptr);
cur.Log = Native.StringFromNativeUtf8(sbptr); //UnixMarshal.PtrToString(sbptr, Encoding.UTF8);
}
} finally {
//static extern IntPtr _tcxstrdel([In] IntPtr strptr);
_tcxstrdel(logsptr);
}
}
}
int ecode = _jb.LastDBErrorCode ?? 0;
if (ecode != 0)
{
cur.Dispose();
throw new EJDBException(_jb);
}
return(cur);
}
