/// <summary>
/// Tries to get the first available entity ID.
/// </summary>
/// <returns>a non-zero ID if one was available; 0 otheriwse</returns>
/// <remarks>If an available ID is found, it will be removed from the database.</remarks>
public static uint GetLowEntityId(ObjectTypeId type)
{
// Lock so someone else doesn't grab the same row
s_idLock.Enter();
try
{
EntityIdStorage eid = GetFirstRecycledId(type);
if (eid == null)
{
return(0);
}
else
{
RemoveRecycledId(eid);
return((uint)eid.EntityId);
}
}
finally
{
s_idLock.Exit();
}
}
/// <summary>
/// Recycles an entity ID of the given type.
/// </summary>
/// <param name="lowerEntityId">the lower entity id</param>
public static bool RecycleLowerEntityId(uint lowerEntityId, ObjectTypeId idType)
{
if (DoesIdExist(lowerEntityId, idType))
{
// TODO: What should we do if it already exists? This is are a serious bug.
s_log.Debug(Resources.AlreadyRecycledEntityId, lowerEntityId.ToString(), idType.ToString());
return(false);
}
EntityIdStorage eid = new EntityIdStorage();
eid.EntityId = lowerEntityId;
eid.EntityType = idType;
AddRecycledId(eid);
return(true);
}
/// <summary>
/// Tries to get the first available player entity ID.
/// </summary>
/// <returns>a non-zero ID if one was available; 0 otheriwse</returns>
/// <remarks>If an available ID is found, it will be removed from the database.</remarks>
public static uint GetPlayerEntityId()
{
// Lock so someone else doesn't grab the same row
s_idLock.Enter();
try
{
EntityIdStorage eid = GetFirstRecycledId(ObjectTypeId.Player);
if (eid == null)
{
if (CharacterRecord.Exists())
{
if (s_highestPlayerId == 0)
{
CharacterRecord highestChr =
CharacterRecord.FindFirst(new Order("_entityLowId", false));
s_highestPlayerId = highestChr.EntityLowId;
}
}
return(++s_highestPlayerId);
}
else
{
RemoveRecycledId(eid);
return((uint)eid.EntityId);
}
}
catch (Exception ex)
{
s_log.ErrorException("couldn't get an entity id", ex);
}
finally
{
s_idLock.Exit();
}
return(0);
}
/// <summary>
/// Tries to get the first available player entity ID.
/// </summary>
/// <returns>a non-zero ID if one was available; 0 otheriwse</returns>
/// <remarks>If an available ID is found, it will be removed from the database.</remarks>
public static uint GetItemEntityId()
{
// Lock so someone else doesn't grab the same row
s_idLock.Enter();
try
{
EntityIdStorage eid = GetFirstRecycledId(ObjectTypeId.Item);
if (eid == null)
{
//if (ItemRecord.Exists())
if (s_highestItemId == 0)
{
//ItemRecord highestItem =
// ItemRecord.FindFirst(new Order("_entityId", false));
//s_highestItemId = highestItem.EntityId;
s_highestItemId = 1;
}
return(++s_highestItemId);
}
else
{
RemoveRecycledId(eid);
return((uint)eid.EntityId);
}
}
catch (Exception ex)
{
s_log.ErrorException("Could not fetch EntityId", ex);
}
finally
{
s_idLock.Exit();
}
return(0);
}
/// <summary>
/// Removes a recycled ID from the database.
/// </summary>
/// <param name="id">the ID to remove</param>
public static void RemoveRecycledId(EntityIdStorage id)
{
id.DeleteAndFlush();
}
/// <summary>
/// Adds a new recycled ID to the database.
/// </summary>
/// <param name="id">the ID to add</param>
public static void AddRecycledId(EntityIdStorage id)
{
id.SaveCopyAndFlush();
}
/// <summary>
/// Recycles an entity ID of the given type.
/// </summary>
/// <param name="lowerEntityId">the lower entity id</param>
public static bool RecycleLowerEntityId(uint lowerEntityId, ObjectTypeId idType)
{
if (DoesIdExist(lowerEntityId, idType))
{
// TODO: What should we do if it already exists? This is are a serious bug.
s_log.Debug(Resources.AlreadyRecycledEntityId, lowerEntityId.ToString(), idType.ToString());
return false;
}
EntityIdStorage eid = new EntityIdStorage();
eid.EntityId = lowerEntityId;
eid.EntityType = idType;
AddRecycledId(eid);
return true;
}
/// <summary>
/// Removes a recycled ID from the database.
/// </summary>
/// <param name="id">the ID to remove</param>
public static void RemoveRecycledId(EntityIdStorage id)
{
id.DeleteAndFlush();
}
/// <summary>
/// Adds a new recycled ID to the database.
/// </summary>
/// <param name="id">the ID to add</param>
public static void AddRecycledId(EntityIdStorage id)
{
id.SaveCopyAndFlush();
}