public override Term Copy()
        {
            DateTerm dateTerm = new DateTerm(SystemTerm, _template, IsFilter);
            CopyBase(dateTerm, _template);

            dateTerm._value = _value;
            dateTerm._format = _format;

            return dateTerm;
        }
		//Generate the Terms collection (of Term) based on an xml document
        //Called by BasicTerms.Create, once from ITATSystem.LoadFromDatabase
 		public static List<Term> Create(XmlNode termsNode, ManagedItem managedItem, Template template)
		{
			List<Term> rtn = new List<Term>(termsNode.ChildNodes.Count);
            int order = 0;
			foreach (XmlNode termNode in termsNode)
			{
				Term t = null;
				switch (termNode.Name.ToString())
				{
					case XMLNames._E_Text:
                        t = new TextTerm(termNode, template, false);
						break;
					case XMLNames._E_Date:
                        t = new DateTerm(termNode, template, false);
						break;
					case XMLNames._E_MSO:
                        t = new MSOTerm(termNode, template, false);
						break;
					case XMLNames._E_Link:
                        t = new LinkTerm(termNode, template, false);
						break;
					case XMLNames._E_Facility:
                        t = new FacilityTerm(termNode, template, false);
						break;
					case XMLNames._E_Renewal:
                        t = new RenewalTerm(termNode, managedItem != null, template, false);
						break;
					case XMLNames._E_PickList:
                        t = new PickListTerm(termNode, template, false);
						break;
					case XMLNames._E_External:
                        t = new ExternalTerm(termNode, managedItem, template, false);
						break;
                    case XMLNames._E_PlaceHolderAttachments:
                        t = new PlaceHolderAttachments(termNode, template, false);
                        break;
                    case XMLNames._E_PlaceHolderComments:
                        t = new PlaceHolderComments(termNode, template, false);
                        break;
                    default:
						throw new XmlException(string.Format("Tried to create undefined term type {0}", termNode.Name.ToString()));
				}
                t.Order = order++;
                rtn.Add(t);
			}
            //If this is not a load of the ITATSystem terms, then ensure that the collection includes the Attachments and Comments terms.
            if (template != null)
            {
                List<Term> placeholderTerms = FindTermsOfType(rtn, (TermType.PlaceHolderAttachments | TermType.PlaceHolderComments));
                if (placeholderTerms == null || (placeholderTerms != null && placeholderTerms.Count == 0))
                {
                    //If this is the first time these are being added, then this should be under Basic Security.
                    Term t = new PlaceHolderAttachments(false, template, false);
                    t.TermGroupID = template.BasicSecurityTermGroupID;
                    t.Order = order++;
                    rtn.Add(t);

                    t = new PlaceHolderComments(false, template, false);
                    t.TermGroupID = template.BasicSecurityTermGroupID;
                    t.Order = order++;
                    rtn.Add(t);
                }
                else if (placeholderTerms.Count != 2)
                {
                    throw new Exception(string.Format("Encountered a PlaceHolder term count of {0:D} when 2 were expected", placeholderTerms.Count));
                }
            }
			return rtn;
		}
		private static Panel CreateDateSearchControl(DateTerm dateTerm, bool canEditProfile, SecurityHelper securityHelper)
		{
			Panel pnl = new Panel();

			//if current page is the Profile page, then display the MSO Control.  Otherwise (e.g. Search), show a text box.
			BaseManagedItemPage p = HttpContext.Current.CurrentHandler as BaseManagedItemPage;
			if (p == null)
			{
				pnl.Controls.Add(DateRangeControl(dateTerm.Name));
			}
			else
			{
				//Profile page
				pnl.Controls.Add(CreateDateControl(dateTerm.Name));
			}
			return pnl;
		}