/**
* <summary>
* Builds a list of all data streams hold by the data logger (legacy method).
* <para>
* The caller must pass by reference an empty array to hold YDataStream
* objects, and the function fills it with objects describing available
* data sequences.
* </para>
* <para>
* This is the old way to retrieve data from the DataLogger.
* For new applications, you should rather use <c>get_dataSets()</c>
* method, or call directly <c>get_recordedData()</c> on the
* sensor object.
* </para>
* <para>
* </para>
* </summary>
* <param name="v">
* an array of YDataStream objects to be filled in
* </param>
* <returns>
* <c>YAPI.SUCCESS</c> if the call succeeds.
* </returns>
* <para>
* On failure, throws an exception or returns a negative error code.
* </para>
*/
public int get_dataStreams(List <YDataStream> v)
{
YAPI.TJsonParser j = null;
int i = 0;
int res = 0;
YAPI.TJSONRECORD root = default(YAPI.TJSONRECORD);
YAPI.TJSONRECORD el = default(YAPI.TJSONRECORD);
v.Clear();
res = getData(0, 0, ref j);
if (res != YAPI.SUCCESS)
{
return(res);
}
root = j.GetRootNode();
if (root.itemcount == 0)
{
return(YAPI.SUCCESS);
}
if (root.items[0].recordtype == YAPI.TJSONRECORDTYPE.JSON_ARRAY)
{
// old datalogger format: [runIdx, timerel, utc, interval]
for (i = 0; i <= root.itemcount - 1; i++)
{
el = root.items[i];
v.Add(new YOldDataStream(this, (int)el.items[0].ivalue, (int)el.items[1].ivalue, (UInt32)el.items[2].ivalue, (int)el.items[3].ivalue));
}
}
else
{
// new datalogger format: {"id":"...","unit":"...","streams":["...",...]}
string json_buffer = j.convertToString(root, false);
List <YDataSet> sets = this.parse_dataSets(YAPI.DefaultEncoding.GetBytes(json_buffer));
for (int sj = 0; sj < sets.Count; sj++)
{
List <YDataStream> ds = sets[sj].get_privateDataStreams();
for (int si = 0; si < ds.Count; si++)
{
v.Add(ds[si]);
}
}
}
j = null;
return(YAPI.SUCCESS);
}
