XmlElement GetItemXml(ItemInfo item)
{
return QueryItem(item.List, item.ListRelativePath);
}
protected abstract ItemInfo RenameItemDirectly(ItemInfo item, string newName);
protected override void RemoveItemDirectly(ItemInfo item)
{
// Item removal modifies the parent element and stores the deletion time to the parent
// list; the parent list last modification time will be touched too but because it is
// computed from the most recent modification time of any child item we don't set it.
var source = GetItemXml(item);
var date = DateForNow;
var parent = (XmlElement) source.ParentNode;
parent.SetAttribute("Modified", date);
var list = source.SelectElement("ancestor::List");
list.SetAttribute("Deleted", date);
source.Remove();
SaveSite(parent);
}
protected abstract void RemoveItemDirectly(ItemInfo item);
void AddCachedItem(ItemInfo item, ItemContainerInfo container = null)
{
if (container == null) {
var path = PathUtility.GetParentPath(item.Path);
Info parent;
if (!path.IsEmpty() && Cache.TryGetObject(path, out parent))
container = (ItemContainerInfo) parent;
}
if (container != null) {
var list = container as ListInfo;
var folder = container as FolderInfo;
var items = list != null ? list.ChildItems : folder.ChildItems;
if (items != null) {
items = items.Concat(new[] { item }).ToList();
if (list != null)
list.ChildItems = items;
else
folder.ChildItems = items;
}
}
}
public void RemoveItem(ItemInfo item)
{
if (item == null)
throw new ArgumentNullException("item");
RemoveCachedItem(item);
RemoveItemDirectly(item);
}
protected abstract ItemInfo CopyItemDirectly(ItemInfo item, ItemContainerInfo target,
bool recurse, string newName);
// Abstract methods modifying the actual SharePoint objects. Their implementation must // return the same raw XML information as the querying methods above. protected abstract XmlElement RawRenameItem(ItemInfo item, string newName);
// Implementation of the ModifyingConnector interface. The methods perform the operation
// and use its raw XML result to create a new item similarly to the item getting and
// listing methods.
protected override ItemInfo RenameItemDirectly(ItemInfo item, string newName)
{
return CreateItemInfo(item.List, RawRenameItem(item, newName));
}
protected abstract XmlElement RawCopyItem(ItemInfo item, ItemContainerInfo target,
bool recurse, string newName);
protected abstract XmlElement RawMoveItem(ItemInfo item, ItemContainerInfo target);
protected override ItemInfo MoveItemDirectly(ItemInfo item, ItemContainerInfo target)
{
return CreateItemInfo(item.List, RawMoveItem(item, target));
}
protected abstract ItemInfo MoveItemDirectly(ItemInfo item, ItemContainerInfo target);
protected abstract ItemInfo CopyItemDirectly(ItemInfo item, ItemContainerInfo target,
bool recurse, string newName);
public ItemInfo CopyItem(ItemInfo item, ItemContainerInfo target,
bool recurse, string newName)
{
if (target == null)
throw new ArgumentNullException("target");
var copy = CopyItemDirectly(item, target, recurse, newName);
AddCachedItem(copy, target);
return copy;
}
ItemInfo CreateItemInfo(ListInfo list, string path, XmlElement source)
{
ItemInfo item;
switch (GetItemType(source)) {
case ItemType.Common:
item = new ItemInfo(list, path); break;
case ItemType.File:
item = new FileInfo(list, path);
((FileInfo) item).Size = GetFileSize(source);
break;
default: // case ItemType.Folder:
item = new FolderInfo(list, path);
((FolderInfo) item).ChildCount = GetFolderChildCount(source);
break;
}
item.ID = GetItemID(source);
item.UniqueID = GetItemUniqueID(source);
item.Title = GetItemTitle(source);
item.Created = GetItemCreated(source);
item.LastModified = GetItemLastModified(source);
FinalizeInfo(item, source);
return item;
}
public ItemInfo MoveItem(ItemInfo item, ItemContainerInfo target)
{
if (target == null)
throw new ArgumentNullException("target");
var moved = MoveItemDirectly(item, target);
RemoveCachedItem(item);
AddCachedItem(moved, target);
return moved;
}
protected override ItemInfo CopyItemDirectly(ItemInfo item, ItemContainerInfo target,
bool recurse, string newName)
{
return CreateItemInfo(item.List, RawCopyItem(item, target, recurse, newName));
}
public ItemInfo RenameItem(ItemInfo item, string newName)
{
if (newName == null)
throw new ArgumentNullException("newName");
if (string.IsNullOrEmpty(newName))
throw new ArgumentException("The new item name must not be empty.");
Cache.RemoveObject(item);
var renamed = RenameItemDirectly(item, newName);
AddCachedItem(renamed);
return renamed;
}
protected override XmlElement RawCopyItem(ItemInfo item, ItemContainerInfo target,
bool recurse, string newName)
{
// Common items have no children and files can have versions as children; we should
// always enable deep cloning for those terminal objects not to corrupt them.
var deeply = recurse | !(item is FolderInfo);
var source = (XmlElement) GetItemXml(item).CloneNode(deeply);
var lastID = GetLastItemID(item.List);
InitializeItemClones(source, ref lastID);
PlaceItemXml(source, target, newName);
SaveSite(source);
return source;
}
protected abstract ItemInfo MoveItemDirectly(ItemInfo item, ItemContainerInfo target);
protected override XmlElement RawMoveItem(ItemInfo item, ItemContainerInfo container)
{
// Item move modifies both old and new parent elements but not the moved item itself.
// the parent is touched after the item is placed to the new container because that
// operation can fail if an item of the same name has been already there. If the item
// is moved to other list it needs a new ID unique in the new list.
var source = GetItemXml(item);
var parent = (XmlElement) source.ParentNode;
source.Remove();
var target = GetItemContainerXml(container);
PlaceItemXml(source, target);
if (!item.List.Path.EqualsCI(container.List.Path)) {
var lastID = GetLastItemID(container.List);
source.SetAttribute("ID", (++lastID).ToStringI());
}
TouchItemXml(parent);
TouchItemXml(target);
SaveSite(target);
return source;
}
protected abstract ItemInfo RenameItemDirectly(ItemInfo item, string newName);
protected override XmlElement RawRenameItem(ItemInfo item, string newName)
{
var source = GetItemXml(item);
RenameItemXml(source, newName);
TouchItemXml(source);
SaveSite(source);
return source;
}
void RemoveCachedItem(ItemInfo item)
{
Cache.RemoveObject(item);
var path = PathUtility.GetParentPath(item.Path);
Info container;
if (!path.IsEmpty() && Cache.TryGetObject(path, out container)) {
var list = container as ListInfo;
var folder = container as FolderInfo;
var items = list != null ? list.ChildItems : folder.ChildItems;
if (items != null) {
items = items.Where(current => current.ID != item.ID).ToList();
if (list != null)
list.ChildItems = items;
else
folder.ChildItems = items;
}
}
}
protected abstract void RemoveItemDirectly(ItemInfo item);