/// <summary>
/// Updates an existing animal data source. Animals in the passed animal list but
/// not in the datasource are added to the data source. Animal in the list and in
/// the data source are updated.
/// </summary>
/// <param name="Animals">
/// The animal list containing the animals to be added and updated.
/// </param>
/// <param name="BG">The background that the animals occupy.</param>
public void UpdateAnimalData(cAnimalList Animals, cBackground BG)
{
if (Animals == null)
{
ThrowAnimalsException();
}
if (BG == null)
{
ThrowBGException();
}
// throw an exception if data source is read only
if (this.ReadOnly)
{
ThrowReadOnlyException();
}
// create a cAnimalAttributes object
cAnimalAttributes Attributes = new cAnimalAttributes();
// write the time stamp
this.WriteTime(BG.Years.CurrentYearNum, BG.Years.CurrentYear.CurrentWeek,
BG.HaveRunWeeklyEvents);
// loop through all foxes, writing each one to the datasource
for (int i = 0; i < Animals.Count; i++)
{
Animals[i].GetAttributes(Attributes);
Attributes.ListIndex = i;
this.WriteAnimalRecord(Attributes, true);
// write markers if the version is correct
if (GetVersion() > 1)
{
this.WriteMarkers(Attributes, true);
}
}
}
/// <summary>
/// Writes the animals in the passed animal list into the data source. This
/// method overwrites any data that is already in the data source.
/// </summary>
/// <param name="Animals">
/// The list of animals to be written into the datasource.
/// </param>
/// <param name="BG">The background that the animals occupy.</param>
public void WriteAnimalData(cAnimalList Animals, cBackground BG)
{
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData()");
if (Animals == null)
{
ThrowAnimalsException();
}
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 01");
if (BG == null)
{
ThrowBGException();
}
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 02");
// throw an exception if data source is read only
if (this.ReadOnly)
{
ThrowReadOnlyException();
}
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 03");
// erase the existing contents of this datasource
this.Clear();
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 04");
// write the time stamp
this.WriteTime(BG.Years.CurrentYearNum, BG.Years.CurrentYear.CurrentWeek, BG.HaveRunWeeklyEvents);
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 05");
// create a cAnimalAttributes object
cAnimalAttributes Attributes = new cAnimalAttributes();
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 06");
// loop through all foxes, writing each one to the datasource
for (int i = 0; i < Animals.Count; i++)
{
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() i = " + i);
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 06 i = " + i);
Animals[i].GetAttributes(Attributes);
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 06 b");
Attributes.ListIndex = i;
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 06 c");
this.WriteAnimalRecord(Attributes, false);
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 06 d");
// write markers if the version is correct
if (GetVersion() > 1)
{
this.WriteMarkers(Attributes, false);
}
}
//System.Diagnostics.Debug.WriteLine("cAnimalDataSource.cs: WriteAnimalData() HERE 07");
// lastly, reset the datasource so that subsequent reads are correct
this.Reset();
}
/// <summary>
/// Read animal data from the data source and fill the passed animal list.
/// </summary>
/// <param name="Animals">
/// The animal list to fill. The animals are added to any that are already in
/// the list.
/// </param>
/// <param name="BG">The background that these animals will occupy.</param>
public void GetAnimalData(cAnimalList Animals, cBackground BG)
{
cAnimal AnimalObj;
if (Animals == null)
{
ThrowAnimalsException();
}
if (BG == null)
{
ThrowBackgroundException();
}
// go to the beginning of the list
this.Reset();
// get subtraction factor for year of birth
// this.ReadTimeRecord(ref DataYear, ref DataWeek);
cAnimalAttributes NewAnimal = new cAnimalAttributes();
// loop through all animals in the list
while (this.GetNextAnimalRecord(NewAnimal, BG))
{
// create the new animal
AnimalObj = GetNewAnimal(NewAnimal, BG);
AnimalObj.ListIndex = NewAnimal.ListIndex;
// read markers for this animal if datasource is of appropriate version
// number
if (GetVersion() > 1)
{
ReadMarkers(NewAnimal);
AnimalObj.AutoMarker = NewAnimal.AutoMarker;
AnimalObj.Marker = NewAnimal.Marker;
}
// add the animal to the list
Animals.Add(AnimalObj);
// create a new animal attributes object so that we don't load the
// same data into all animals
NewAnimal = new cAnimalAttributes();
// advance to the next record in the dataset
this.MoveToNextRecord();
}
// now reorder the list based on current list index
Animals.ReorderByListIndex();
}
/// <summary> /// Read markers for a single animal record from the database. /// </summary> /// <param name="Data"> /// The animal attributes object that will contain the marker data /// </param> protected abstract void ReadMarkers(cAnimalAttributes Data);
/// <summary> /// Write markers for a single animal record into the database. /// </summary> /// <param name="Data"> /// The animal attributes object containing the data to be written. /// </param> /// <param name="DeleteFirst"> /// A flag indicating whether or not an existing record with the same ID should /// be deleted before the current data is written. /// </param> protected abstract void WriteMarkers(cAnimalAttributes Data, bool DeleteFirst);
/// <summary> /// Write a single animal record into the database. /// </summary> /// <param name="Data"> /// The animal attributes object containing the data to be written. /// </param> /// <param name="DeleteFirst"> /// A flag indicating whether or not an existing record with the same ID should /// be deleted before the current data is written. /// </param> protected abstract void WriteAnimalRecord(cAnimalAttributes Data, bool DeleteFirst);
/// <summary>
/// Retrieves a single Animal record from the data source and places it in the
/// passed Animal data object.
/// </summary>
/// <param name="Data">
/// The Animal data object that will contain the Animal data.
/// </param>
/// <returns>
/// True if the retrieval was successful, False if there are no more records to
/// retrieve.
/// </returns>
protected abstract bool GetNextAnimalRecord(cAnimalAttributes Data,
cBackground Background);
/// <summary> /// Create a new specific animal type /// </summary> /// <param name="Animal">The animal attributes used to define the animal.</param> /// <param name="BG">The background in which the animal will live.</param> /// <returns>The new animal as a cAnimal type.</returns> protected abstract cAnimal GetNewAnimal(cAnimalAttributes NewAnimal, cBackground BG);
