public bool ReadLine([NotNullWhen(true)] out ChildrenList_ParentReadonlyRaw?childrenList_ParentReadonlyRaw)
{
if (csvReader.IsEndOfFileReached())
{
csvReader.Dispose();
childrenList_ParentReadonlyRaw = null;
return(false);
}
childrenList_ParentReadonlyRaw = new ChildrenList_ParentReadonlyRaw();
var firstLineChar = csvReader.ReadFirstLineChar();
if (firstLineChar == csvConfig.LineCharAdd)
{
childrenList_ParentReadonlyRaw.RawState = RawStateEnum.Read;
}
else if (firstLineChar == csvConfig.LineCharUpdate)
{
childrenList_ParentReadonlyRaw.RawState = RawStateEnum.Updated;
}
else if (firstLineChar == csvConfig.LineCharDelete)
{
childrenList_ParentReadonlyRaw.RawState = RawStateEnum.Deleted;
}
else
{
throw new NotSupportedException($"Illegal first line character '{firstLineChar}' found in '{csvReader.GetPresentContent()}'.");
}
childrenList_ParentReadonlyRaw.Key = csvReader.ReadInt();
childrenList_ParentReadonlyRaw.Text = csvReader.ReadString();
csvReader.ReadEndOfLine();
return(true);
}
public void Write(ChildrenList_ParentReadonlyRaw childrenList_ParentReadonlyRaw)
{
if (childrenList_ParentReadonlyRaw.Key < 0)
{
throw new Exception($"ChildrenList_ParentReadonlyRaw's key {childrenList_ParentReadonlyRaw.Key} needs to be greater equal 0.");
}
if (childrenList_ParentReadonlyRaw.Key <= lastKey)
{
throw new Exception($"ChildrenList_ParentReadonlyRaw's key {childrenList_ParentReadonlyRaw.Key} must be greater than the last written ChildrenList_ParentReadonly's key {lastKey}.");
}
lastKey = childrenList_ParentReadonlyRaw.Key;
csvWriter.WriteFirstLineChar(csvConfig.LineCharAdd);
csvWriter.Write(childrenList_ParentReadonlyRaw.Key);
csvWriter.Write(childrenList_ParentReadonlyRaw.Text);
csvWriter.WriteEndOfLine();
}