public bool CreateLink(TagData tagData, ArticleData articleData)
{
Logger.GetInstance().Log("TDB: Initialising Link creation");
bool returnValue = false;
// Check if a conenction is open
if (!_hasOpenedConnection)
{
return(false);
}
// Create query
string query =
"INSERT INTO links (tag_id, tag_timestamp, tag_data, article_id, article_name, article_note, article_cost) VALUES ('"
+ tagData.Id + "','" + tagData.TimeStamp.ToString("dd.MM.yyyy HH:mm:ss") + "','" + tagData.Data + "','"
+ articleData.Id + "','" + articleData.Name + "','" + articleData.Note + "','" + articleData.Cost + "');";
Logger.GetInstance().Log("DB: Creating link query: " + query);
Logger.GetInstance().Log("DB: Creating link");
try
{
// Executing the command
returnValue = CreateAndExecuteCommand(query);
}
catch (Exception e)
{
Logger.GetInstance().Log("--Exception caught in TDB: " + e.Message);
}
Logger.GetInstance().Log("DB: Link created");
return(returnValue);
}
private void OnNewTagScanned(TagData scannedTag)
{
// Trigger event if the handler isnt null (if there are subscribers)
NewTagScanned?.Invoke(scannedTag);
}
/* tasked method which searches for new tasks in the field of the reader
* adds only distinct chips the the list of scanned tags */
private void Scanner()
{
while (Scanning)
{
try
{
var tagList = _reader.TagInventory(true, 0x00, 1);
if (tagList.Count > 0)
{
Logger.GetInstance().Log($"tagList.Count = {tagList.Count}");
var listTagHandler = tagList.Values;
foreach (FedmIscTagHandler th in listTagHandler)
{
if (th == null)
{
continue;
}
FedmIscTagHandler tagHandler;
try
{
tagHandler = _reader.TagSelect(th, 0);
}
catch (Exception e)
{
Logger.GetInstance().Log("--Exception caught in SC: " + e.Message);
continue;
}
Logger.GetInstance().Log("SC: Called TagSelect");
// Check if the scanned tag is of the correct type
if (!(tagHandler is FedmIscTagHandler_ISO15693))
{
continue;
}
try
{
// Create TagData from tag
TagData scannedTag = FormatTagHandlerToTagData((FedmIscTagHandler_ISO15693)tagHandler);
lock (_scannedTags
) // lock object because same list is used as return value in asynchronous main thread
{
if (!_scannedTags.Contains(scannedTag))
{
_scannedTags
.Add(
scannedTag); // info about tag gets saved into list if its not already inside
OnNewTagScanned(scannedTag);
}
}
}
catch (Exception e)
{
Logger.GetInstance().Log("--Exception caught in SC: " + e.Message);
}
}
System.Threading.Thread.Sleep(100); // if tags could have been found, wait for 100 ms
}
else
{
System.Threading.Thread.Sleep(200); // if no tags could have been found, wait for 200 ms
}
}
catch (Exception e)
{
Logger.GetInstance().Log("SC: --EXCEPTION caught while scanning: " + e.Message + e.GetType());
}
}
}
public ArticleData GetArticleDataByTagData(TagData tagData)
{
return(GetArticleDataByTagData(tagData.Id));
}