Examples of de.desy.tine.client.TLink

de.desy.tine.client.TLink
TLink.java User interface calls to access tine data links. The methods presented here deal with linking local application data with remote data sources. Primarily you will need to create a TLink object, passing the necessary identifying parameters of the remote server to which the link is to be established. When the TLink object is instantiated, you will then need to retrieve the data using one of the retrieval methods, e.g. execute() for synchronous acquisition, or attach() for asynchronous acquisition, or receive() for the acquisition of network globals.

    else
    {
      isActive = null;
      dout = new TDataType(data);
    }
    TLink tl = new TLink(dname,"RECORD.CMTS",dout,din,TAccess.CA_READ);
    int cc = tl.executeAndClose(timeout);
    if (cc != 0) return -cc;
    int n = dout.getCompletionLength();
    if (isActive != null)
    {
      for (int i=0; i<n; i++)

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    char[] cmt = new char[1024];
    dout = new TDataType(cmt);


    String dname = new String("/"+context+"/HISTORY/"+property+"@"+(int)target);


    TLink tl = new TLink(dname,"RECORD.CMT",dout,null,TAccess.CA_READ);
    int cc = tl.executeAndClose(timeout);
    if (cc != 0) return cc;
    int len = dout.getCompletionLength();
    data[0] = new String(cmt,0,len);
    return 0;
  }

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      din = new TDataType(text.toCharArray());
    }
    String keepString = keepAlive ? "[KEEPALIVE]" : "";
    String dname = new String("/"+context+"/HISTORY/"+property+"@"+(int)targetTime+keepString);


    TLink tl = new TLink(dname,"RECORD.CMT",null,din,TAccess.CA_WRITE);
    return tl.executeAndClose(timeout);
  }

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    { // not a call to a central archive server
      tryAlternateProperty = true;
      if (!isArchiveQueryProperty(property))
        pname = pname + ".HIST"; // meta extension not given, try this ...
    }
    TLink tl = new TLink(dname,pname,dout,din,TAccess.CA_READ);
    cc = tl.executeAndClose(timeout);
    if (cc == TErrorList.un_allocated && tryAlternateProperty)
    {
      String[] hists = getArchivedProperties(context,server);
      if (hists != null)
      { // there are histories available ....
        if (isScheduledProperty(rname))
        { // look for unscheduled alternative
          for (String h : hists)
          {
            if (rname.startsWith(h))
            {
              pname = h+".HIST";
              tl = new TLink(dname,pname,dout,din,TAccess.CA_READ);
              cc = tl.executeAndClose(timeout);
              break;
            }
          }
        }
        else
        { // look for scheduled alternative
          for (String h : hists)
          {
            if (isScheduledProperty(h))
            {
              if (h.startsWith(rname))
              {
                pname = h+".HIST";
                tl = new TLink(dname,pname,dout,din,TAccess.CA_READ);
                cc = tl.executeAndClose(timeout);
                break;             
              }
            }
          }        
        }
      }
    }
    if (cc != 0 && isCentralArchiver(server))
    { // special 2nd chance !
      if (isArchiveQueryProperty(property))
      {
        pname = rname + ".ARCH";
      }
      else
      {
        pname = new String(property) + ".ARCH";
      }
      tl = new TLink(dname,pname,dout,din,TAccess.CA_READ);
      cc = tl.executeAndClose(timeout);
    }
    return cc == 0 ? dout.getCompletionLength() : -cc;
  }

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        ntries = 2;
      }
    }
    for (int i=0; i<ntries; i++)
    {
      TLink tl = new TLink(dname,pname[i],dout,din,TAccess.CA_READ);
      cc = tl.execute(2000, true);
      targetTime[0] = tl.getLastDataTimeStamp();
      tl.close();
      if (cc == 0 && dout.getCompletionLength() > 0) break;
    }
    return cc;
  }

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        ntries = 2;
      }
    }
    for (int i=0; i<ntries; i++)
    {
      TLink tl = new TLink(dname,pname[i],dout,din,TAccess.CA_READ);
      cc = tl.execute(2000, true);
      targetTime[0] = tl.getLastDataTimeStamp();
      tl.close();
      if (cc == 0 && dout.getCompletionLength() > 0) break;
    }
    return cc;
  }

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  {
    THistoryRecordStruct[] hrs = new THistoryRecordStruct[1];
    THistorySpecification hsp = new THistorySpecification(pollInterval, archInterval, depthShort, depthLong, heartBeat, pTolerance, aTolerance, null);
    hrs[0] = new THistoryRecordStruct(device, property, datasiz, datafmt, hsp);
    String dev = "/"+context+"/"+server;
    TLink lnk = new TLink(dev,"ADDHISTORY",null,new TDataType(hrs),TAccess.CA_WRITE);
    return lnk.executeAndClose();
  }

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  }
  public static String[] getLocalHistoryProperties(String context,String server,String device)
  {
    int[] n = new int[1];
    String dev = "/"+context+"/"+server;
    TLink lnk = new TLink(dev,"NHISTORIES",new TDataType(n),null,TAccess.CA_READ);
    if (lnk.executeAndClose() != 0) return null;
    if (n[0] == 0)
    { // could be a doocs server
      String eqm = TSrvEntry.getSrvEntryEqmName(context, server);
      if (eqm == null || eqm.compareTo(TSrvEntry.DOOCSEQM) != 0) return null;
      String[] prps = TQuery.getDeviceProperties(context, server, device);
      if (prps == null) return null;
      ArrayList<String>al = new ArrayList<String>();
      for (String p : prps)
      {
        if (p.endsWith(".HIST")) al.add(p.substring(0, p.lastIndexOf('.')));  
      }
      if (al.isEmpty()) return null;
      return al.toArray(new String[0]);
    }
    NAME64[] nlst = new NAME64[n[0]];
    lnk = new TLink(dev,"HISTORIES",new TDataType(nlst),null,TAccess.CA_READ);
    if (lnk.executeAndClose() != 0) return null;
    return NameToString.nameArrayToString(nlst);
  }

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    THistoryRecordStruct[] hrs = new THistoryRecordStruct[1];
    hrs[0] = new THistoryRecordStruct();
    String dev = "/"+context+"/"+server;
    TDataType dout = new TDataType(hrs);
    TDataType din = new TDataType(property.toCharArray());
    TLink lnk = new TLink(dev,"HISTORIES",dout,din,TAccess.CA_READ);
    int cc = lnk.executeAndClose();
    if (cc != 0) return null;
    if (dout.getCompletionLength() < 1) return null;
    return hrs[0];
  }

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    TDataType dtprps;
    tagsString = isCentral ? "TAGS" : "HISTORIES";
    ntagsString = "N" + tagsString;
    
    String dname = "/" + context + "/" + server;
    TLink tl = new TLink(dname,ntagsString,dtnprps,dtsubs,TAccess.CA_READ);
    int cc = tl.execute(800, true);
    tl.close();
    if (cc != 0)
    { // TODO: throw an exception here
      return null;
    }
    if (nprps[0] > 0)
    {
      nlist = new NAME32[nprps[0]];
      dtprps = new TDataType(nlist);
      tl = new TLink(dname,tagsString,dtprps,dtsubs,TAccess.CA_READ);
      cc = tl.execute(800, true);
      tl.close();
      if (cc != 0)
      { // TODO: throw an exception here
        return null;
      }
    }

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