/// <summary> Find the static html file to display for an item view request, when requested by a search engine robot for indexing </summary>
/// <param name="Current_Mode"> Mode / navigation information for the current request</param>
/// <param name="All_Items_Lookup"> Lookup object used to pull basic information about any item loaded into this library </param>
/// <param name="Tracer"> Trace object keeps a list of each method executed and important milestones in rendering </param>
/// <returns> Location for the static html file to display for this item view request </returns>
public string Get_Item_Static_HTML(Navigation_Object Current_Mode, Item_Lookup_Object All_Items_Lookup, Custom_Tracer Tracer)
{
// Must at least have a bib id of the proper length
if (Current_Mode.BibID.Length < 10)
{
Current_Mode.Invalid_Item = true;
return String.Empty;
}
// Get the title object for this
Multiple_Volume_Item dbTitle = All_Items_Lookup.Title_By_Bib(Current_Mode.BibID);
if (dbTitle == null)
{
Current_Mode.Invalid_Item = true;
return String.Empty;
}
// Try to get the very basic information about this item, to determine if the
// bib / vid combination is valid
Single_Item selected_item = null;
if (Current_Mode.VID.Length > 0)
{
selected_item = All_Items_Lookup.Item_By_Bib_VID(Current_Mode.BibID, Current_Mode.VID, Tracer);
}
else
{
if (dbTitle.Item_Count == 1)
{
selected_item = All_Items_Lookup.Item_By_Bib_Only(Current_Mode.BibID);
}
}
// If no valid item and not a valid item group display either, return
if (selected_item == null)
{
Current_Mode.Invalid_Item = true;
return String.Empty;
}
// Set the title to the info browse, just to store it somewhere
Current_Mode.Info_Browse_Mode = selected_item.Title;
// Get the text for this item
string bibid = Current_Mode.BibID;
string vid = selected_item.VID.PadLeft(5, '0');
Current_Mode.VID = vid;
string base_image_url = UI_ApplicationCache_Gateway.Settings.Servers.Base_Data_Directory + bibid.Substring(0, 2) + "\\" + bibid.Substring(2, 2) + "\\" + bibid.Substring(4, 2) + "\\" + bibid.Substring(6, 2) + "\\" + bibid.Substring(8, 2) + "\\" + bibid + "_" + vid + ".html";
return base_image_url;
}
/// <summary> Get a digital resource for display or for editing </summary>
/// <param name="Collection_Code"> Collection code to which this item must belong </param>
/// <param name="Current_Mode"> Mode / navigation information for the current request</param>
/// <param name="All_Items_Lookup"> Lookup object used to pull basic information about any item loaded into this library </param>
/// <param name="Base_URL"> Base URL for all the digital resource files for items to display </param>
/// <param name="Icon_Table"> Dictionary of all the wordmark/icons which can be tagged to the items </param>
/// <param name="Current_User"> Currently logged on user information (used when editing an item)</param>
/// <param name="Item_Viewer_Priority"> List of the globally defined item viewer priorities </param>
/// <param name="Tracer"> Trace object keeps a list of each method executed and important milestones in rendering </param>
/// <param name="Current_Item"> [OUT] Built single digital resource ready for displaying or editing </param>
/// <param name="Current_Page"> [OUT] Build current page for display </param>
/// <param name="Items_In_Title"> [OUT] List of all the items in this title </param>
/// <returns> TRUE if successful, otherwise FALSE </returns>
/// <remarks> This attempts to pull the objects from the cache. If unsuccessful, it builds the objects from the
/// database and hands off to the <see cref="CachedDataManager" /> to store in the cache. If the item must be
/// built from scratch, the <see cref="SobekCM_Item_Factory"/> class is utilized. </remarks>
public bool Get_Item(string Collection_Code,
Navigation_Object Current_Mode,
Item_Lookup_Object All_Items_Lookup,
string Base_URL,
Dictionary<string, Wordmark_Icon> Icon_Table,
List<string> Item_Viewer_Priority,
Custom_Tracer Tracer,
User_Object Current_User,
out SobekCM_Item Current_Item,
out Page_TreeNode Current_Page,
out SobekCM_Items_In_Title Items_In_Title)
{
if (Tracer != null)
{
Tracer.Add_Trace("SobekCM_Assistant.Get_Item", String.Empty);
}
// Initially assign nulls
Current_Item = null;
Current_Page = null;
Items_In_Title = null;
// Check for legacy reference by itemid
if ((Current_Mode.BibID.Length == 0) && (Current_Mode.ItemID_DEPRECATED.HasValue))
{
DataRow thisRowInfo = SobekCM_Database.Lookup_Item_By_ItemID(Current_Mode.ItemID_DEPRECATED.Value, Tracer);
if (thisRowInfo == null)
{
Current_Mode.Invalid_Item = true;
return false;
}
Current_Mode.Mode = Display_Mode_Enum.Legacy_URL;
Current_Mode.Error_Message = Current_Mode.Base_URL + thisRowInfo["BibID"] + "/" + thisRowInfo["VID"];
return false;
}
// Must at least have a bib id of the proper length
if (Current_Mode.BibID.Length < 10)
{
Current_Mode.Invalid_Item = true;
return false;
}
// Get the title object for this
bool item_group_display = false;
Multiple_Volume_Item dbTitle = All_Items_Lookup.Title_By_Bib(Current_Mode.BibID);
if (dbTitle == null)
{
Current_Mode.Invalid_Item = true;
return false;
}
// Try to get the very basic information about this item, to determine if the
// bib / vid combination is valid
Single_Item selected_item = null;
// Certain mySobek modes only need the item group
if (( Current_Mode.Mode == Display_Mode_Enum.My_Sobek ) && (( Current_Mode.My_Sobek_Type == My_Sobek_Type_Enum.Edit_Group_Behaviors ) || ( Current_Mode.My_Sobek_Type == My_Sobek_Type_Enum.Edit_Group_Serial_Hierarchy ) || ( Current_Mode.My_Sobek_Type == My_Sobek_Type_Enum.Group_Add_Volume ) || ( Current_Mode.My_Sobek_Type == My_Sobek_Type_Enum.Group_AutoFill_Volumes ) || ( Current_Mode.My_Sobek_Type == My_Sobek_Type_Enum.Group_Mass_Update_Items )))
{
item_group_display = true;
}
// If this is not a mode that is only item group display, try to pull the item
if (!item_group_display)
{
if (( !String.IsNullOrEmpty(Current_Mode.VID)) && (Current_Mode.VID != "00000"))
{
selected_item = All_Items_Lookup.Item_By_Bib_VID(Current_Mode.BibID, Current_Mode.VID, Tracer);
}
else
{
if ((dbTitle.Item_Count == 1) && (( String.IsNullOrEmpty(Current_Mode.VID)) || ( Current_Mode.VID != "00000")))
{
selected_item = All_Items_Lookup.Item_By_Bib_Only(Current_Mode.BibID);
}
else
{
item_group_display = true;
}
}
}
// If no valid item and not a valid item group display either, return
if ((selected_item == null) && (!item_group_display))
{
Current_Mode.Invalid_Item = true;
return false;
}
// If this is for a single item, return that
if (selected_item != null)
{
// Make sure the VID is set
Current_Mode.VID = selected_item.VID;
// Try to get this from the cache
if ((Current_Mode.Mode == Display_Mode_Enum.My_Sobek) && ( Current_Mode.My_Sobek_Type == My_Sobek_Type_Enum.Edit_Item_Metadata ) && (Current_User != null))
Current_Item = CachedDataManager.Retrieve_Digital_Resource_Object(Current_User.UserID, Current_Mode.BibID, Current_Mode.VID, Tracer);
else
Current_Item = CachedDataManager.Retrieve_Digital_Resource_Object( Current_Mode.BibID, Current_Mode.VID, Tracer);
// If not pulled from the cache, then we will have to build the item
if (Current_Item == null)
{
if (Tracer != null)
{
Tracer.Add_Trace("SobekCM_Assistant.Get_Item", "Build the item");
}
Current_Item = SobekCM_Item_Factory.Get_Item(Current_Mode.BibID, Current_Mode.VID, Icon_Table, Item_Viewer_Priority, Tracer);
if (Current_Item != null)
{
if ((Current_Mode.Mode == Display_Mode_Enum.My_Sobek) && (Current_Mode.My_Sobek_Type == My_Sobek_Type_Enum.Edit_Item_Metadata) && (Current_User != null))
{
string note_to_add = "Online edit by " + Current_User.Full_Name + " ( " + DateTime.Now.ToShortDateString() + " )";
Current_Item.METS_Header.Add_Creator_Individual_Notes( note_to_add );
CachedDataManager.Store_Digital_Resource_Object(Current_User.UserID, Current_Mode.BibID, Current_Mode.VID, Current_Item, Tracer);
}
else
CachedDataManager.Store_Digital_Resource_Object(Current_Mode.BibID, Current_Mode.VID, Current_Item, Tracer);
}
}
else
{
if (Tracer != null)
{
Tracer.Add_Trace("SobekCM_Assistant.Get_Item", "Item found in the cache");
}
}
// If an item was requested and none was found, go to the current home
if ((Current_Item == null))
{
if (Tracer != null && !Tracer.Enabled)
{
Current_Mode.Mode = Display_Mode_Enum.Aggregation;
Current_Mode.Aggregation_Type = Aggregation_Type_Enum.Home;
return false;
}
return false;
}
// Get the page to display (printing has its own specification of page(s) to display)
if (Current_Mode.Mode != Display_Mode_Enum.Item_Print)
{
if (Tracer != null)
{
Tracer.Add_Trace("SobekCM_Assistant.Get_Item", "Get the current page");
}
// Get the page count in the results
int current_page_index = Current_Mode.Page.HasValue ? Math.Max(Current_Mode.Page.Value, ((ushort)1)) : 1;
Current_Page = SobekCM_Item_Factory.Get_Current_Page(Current_Item, current_page_index, Tracer);
}
}
else
{
// Try to get this from the cache
Current_Item = CachedDataManager.Retrieve_Digital_Resource_Object(Current_Mode.BibID, Tracer);
// Have to build this item group information then
if (Current_Item == null)
{
string bibID = Current_Mode.BibID;
SobekCM_Item_Factory.Get_Item_Group(bibID, Tracer, out Items_In_Title, out Current_Item );
if (Tracer != null)
{
Tracer.Add_Trace("SobekCM_Assistant.Get_Item", "TEST LOG ENTRY");
}
if (Current_Item == null)
{
Exception ee = SobekCM_Database.Last_Exception;
if (Tracer != null)
Tracer.Add_Trace("SobekCM_Assistant.Get_Item", ee != null ? ee.Message : "NO DATABASE EXCEPTION", Custom_Trace_Type_Enum.Error);
Current_Mode.Invalid_Item = true;
return false;
}
// Put this back on the cache
Current_Item.METS_Header.RecordStatus_Enum = METS_Record_Status.BIB_LEVEL;
CachedDataManager.Store_Digital_Resource_Object(bibID, Current_Item, Tracer);
CachedDataManager.Store_Items_In_Title(bibID, Items_In_Title, Tracer);
}
}
return true;
}
