/// <summary>
/// Adds a new object to the collection.
/// </summary>
/// <param name="key">The key of the object.</param>
/// <param name="obj">The object to add</param>
protected void Add(KeyBase key, PhotoObjectBase obj)
{
innerList.Add(key, obj);
// Keep a map of the keys to the IDs
keyMap.Add(obj.Id, key);
}
protected int GetIdentityValue(PhotoObjectBase obj)
{
IDbCommand command = this.GetCommand();
command.CommandText = "SELECT @@IDENTITY";
int id = (int)command.ExecuteScalar();
obj.SetId(id);
return(id);
}
internal override void Delete(PhotoObjectBase obj)
{
PhotoDirectory directory = (PhotoDirectory)obj;
IDbCommand command = base.GetCommand();
command.CommandText = "DELETE FROM tblDirectories WHERE ID = ?";
command.Parameters.Add(base.CreateIntParam("ID", directory.Id));
if (command.ExecuteNonQuery() != 1)
{
throw new Exception("Attempted to delete a PhotoDirectory record that did not exit");
}
}
private void InitPage(HttpRequest request)
{
DirectoryBrowser dirBrowser = (DirectoryBrowser)Session["photo_DirectoryBrowser"];
PhotoDirectory CurrentDirectory = (PhotoDirectory)Session["photo_CurrentDirectory"];
if (dirBrowser == null || request.Params["method"] == null)
{
// string photosPath = request.ApplicationPath + Path.DirectorySeparatorChar;
string mappedPhotosDbPath = request.MapPath("") + "\\photos";
if (Session["photo_rootpath"] == null)
{
Response.Write("错误的参数，通知管理员此异常现象");
Response.End();
}
string path = (string)Session["photo_rootpath"];
dirBrowser = new DirectoryBrowser(mappedPhotosDbPath, path);
}
Hashtable directoryLookup = (Hashtable)Session["photo_DirectoryLookup"];
if (directoryLookup == null)
{
directoryLookup = new Hashtable();
}
DisplayTreeview(dirBrowser, directoryLookup);
// expand out the current directory node
int directoryID = -1;
if (CurrentDirectory != null)
{
directoryID = CurrentDirectory.Id;
}
else if (request.Params["directoryID"] != null)
{
directoryID = Int32.Parse(request.Params["directoryID"]);
}
else
{
PhotoObjectBase pd1 = dirBrowser.rootDir.GetByIndex(0);
directoryID = pd1.Id;
}
squishyWARE.WebComponents.squishyTREE.TreeNode node = tvwMain.FindTreeNode(directoryID.ToString());
ExpandNode(node);
Session.Add("photo_DirectoryBrowser", dirBrowser);
Session.Add("photo_DirectoryLookup", directoryLookup);
// Must be called after DisplayTreeview
ProcessMethod(request, directoryLookup, directoryID);
}
/// <summary>
/// Deletes a photo from the database. Note that this does not delete any associated comments.
/// </summary>
/// <param name="obj">A Photo object representing the photo to be deleted.</param>
internal override void Delete(PhotoObjectBase obj)
{
Photo photo = (Photo)obj;
IDbCommand cmd = GetCommand();
cmd.CommandText = "DELETE FROM tblPhotos WHERE ID = " + photo.Id;
//cmd.Parameters.Add(CreateIntParam("ID", photo.Id));
int rowsAffected = cmd.ExecuteNonQuery();
if (rowsAffected != 1)
{
throw new Exception("Attempted to delete a Photo record that does not exist");
}
}
internal override void Delete(PhotoObjectBase obj)
{
throw new NotImplementedException("Cannot delete comment objects");
}
protected override KeyBase CreateKey(PhotoObjectBase obj)
{
Comment comment = (Comment)obj;
return(new CommentKey(comment.Id, comment.Name, comment.DateAdded));
}
protected override KeyBase CreateKey(PhotoObjectBase obj)
{
Photo photo = (Photo)obj;
return(new PhotoKey(photo.Id, photo.DateTaken, photo.Name));
}
/// <summary>
/// Creates the collection key based on a PhotoDirectory object.
/// </summary>
/// <param name="obj">The PhotoDirectory object who's collection key we want.</param>
/// <returns>A PhotoDirectoryKey object.</returns>
protected override KeyBase CreateKey(PhotoObjectBase obj)
{
PhotoDirectory photoDirectory = (PhotoDirectory)obj;
return(new PhotoDirectoryKey(photoDirectory.Id, photoDirectory.Name));
}
/// <summary> /// Creates a KeyBase object that is used to store PhotoObjectBase objects in /// the collection. /// </summary> /// <param name="obj">The object to create the key for.</param> /// <returns>A KeyBase object.</returns> protected abstract KeyBase CreateKey(PhotoObjectBase obj);
/// <summary>
/// Returns the zero-based index of the specified key in the PhotosCollectionBase.
/// </summary>
/// <param name="key">The key to locate in the PhotosCollectionBase. </param>
/// <returns>The zero-based index of key, if key is found in the PhotosCollectionBase; otherwise, -1.</returns>
public int IndexOf(PhotoObjectBase obj)
{
KeyBase key = CreateKey(obj);
return(innerList.IndexOfKey(key));
}
internal abstract void Delete(PhotoObjectBase obj);
protected void Add(KeyBase key, PhotoObjectBase obj)
{
this.innerList.Add(key, obj);
this.keyMap.Add(obj.Id, key);
}
