PDF Document title - SearchUnit - Forum

using System;
using System.Collections.Generic;
using System.Text;
using Keyoti.SearchEngine.Events;
using Keyoti.SearchEngine.Documents;
using Keyoti.SearchEngine.DataAccess;
using Keyoti.SearchEngine.Index.IndexableSources;
using System.Collections;
using Keyoti.SearchEngine.DataAccess.IndexableSourceRecords;

namespace Keyoti.SearchEngine
{
    public class ExternalEventHandler
    {
        IEventDispatcher dispatcher;
        Configuration conf;

        /// <summary>
        /// New, attaches event handlers.
        /// </summary>
        /// <param name="dispatcher">The object which fires events that this plug-in handles.</param>
        /// <param name="conf">The engine configuration.</param>
        public ExternalEventHandler(IEventDispatcher dispatcher, Configuration conf)
        {
            Keyoti.SearchEngine.DataAccess.Log.WriteLogEntry("Plug-in Template Project", "Initialized", conf);
            dispatcher.Action += new ActionEventHandler(dispatcher_Action);
            dispatcher.NeedObject += new NeedObjectEventHandler(dispatcher_NeedObject);
            this.dispatcher = dispatcher;
            this.conf = conf;
           
        }

        /// <summary>
        /// Removes the handlers, so that the object can be disposed of. 
        /// </summary>
        /// <remarks>This is called when the DLL is unloaded.</remarks>
        public void DetachHandlers()
        {
            if (dispatcher != null)
            {
                dispatcher.Action -= new ActionEventHandler(dispatcher_Action);
                dispatcher.NeedObject -= new NeedObjectEventHandler(dispatcher_NeedObject);
            }


        }

        /// <summary>
        /// Handles ACTION events.  This method is called as the engine performs various actions.
        /// </summary>
        public void dispatcher_Action(object sender, ActionEventArgs e)
        {
            //Log everything - comment this line after debugging to optimize speed.
            Keyoti.SearchEngine.DataAccess.Log.WriteLogEntry("Plug-in Template Project", e.ActionData.Name.ToString(), conf);


            try
            {

                /* Some examples
                 * Also see Help for details on what data is available for different events */
                switch (e.ActionData.Name)
                {
                   
                 <b>   case ActionName.ReadingText:

                        DocumentText documentText = e.ActionData.Data as DocumentText;
                        string creationDate = documentText.MetaData["CreateDate"].ToString();// = "D:20130111170238-06'00'" ; (D:YYYYMMDDHHmmSSOHH'mm')
                        documentText.MetaCustomData = creationDate;                       
                        break;
</b>
                   

                }

            }
            catch (Exception ex)
            {
                Keyoti.SearchEngine.DataAccess.Log.WriteLogEntry("Plug-in Template Project", "Exception: "+ex.ToString(), conf);
            }
        }

        /// <summary>
        /// Handles need object events.  This method is called as the engine requires new instances of various classes.
        /// </summary>
        public void dispatcher_NeedObject(object sender, NeedObjectEventArgs e)
        {
            //leave blank unless needed, will use default objects.
        }

    }
}

documentText.MetaCustomData = creationDate;

documentText.AppendText("Created on: "+creationDate, conf);

using System;
using System.Collections.Generic;
using System.Text;
using Keyoti.SearchEngine.Events;
using Keyoti.SearchEngine.Documents;
using Keyoti.SearchEngine.DataAccess;
using Keyoti.SearchEngine.Index.IndexableSources;
using System.Collections;
using Keyoti.SearchEngine.DataAccess.IndexableSourceRecords;
using Keyoti.SearchEngine;
using System.Web.UI.WebControls;


public partial class ResultPage : System.Web.UI.Page
{
    bool sortByDate = false;

    SortDirection sortDirection = SortDirection.Descending;
   
    protected void Page_Load(object sender, EventArgs e)
    {
        SearchResult1.FilterLoadLevel = Keyoti.SearchEngine.Search.FilterLoadLevel.Everything;
        SearchResult1.ItemCreated += Sr1_ItemCreated;

        SearchResult1.Configuration.CentralEventDispatcher.Action += new Keyoti.SearchEngine.Events.ActionEventHandler(CentralEventDispatcher_Action);
    }
    protected void sortDownBT_Click(object sender, EventArgs e)
    {

        sortByDate = true;

        sortDirection = SortDirection.Descending;

        SearchResult1.InvalidateChildControlHierarchy();

    }

    protected void sortUpBT_Click(object sender, EventArgs e)
    {

        sortByDate = true;

        sortDirection = SortDirection.Ascending;

        SearchResult1.InvalidateChildControlHierarchy();

    }
    protected void Sr1_ItemCreated(object sender, Keyoti.SearchEngine.Web.SearchResultItemEventArgs e)
    {

        if (e.Item is Keyoti.SearchEngine.Web.ResultItem)
        {

            Label dateLabel = e.Item.FindControl("dateLabel") as Label;

            if (dateLabel != null)
            {

                try
                {
                    DateTime docDate = ParsePDFMetaDate((e.Data as Keyoti.SearchEngine.Search.ResultItem).DocumentRecord.CustomData);

                    dateLabel.Text = docDate.ToLongDateString();

                }

                catch (FormatException)
                {

                    //wasn't a date

                }

            }

        }

    }

    private static DateTime ParsePDFMetaDate(string rawString)
    {
        //"D:20130114062009-06'00
        string metaDate = rawString.Substring(2, 8);
        DateTime docDate = DateTime.ParseExact(metaDate, "yyyyMMdd", System.Globalization.CultureInfo.InvariantCulture);

        return docDate;
    }
    void CentralEventDispatcher_Action(object sender, Keyoti.SearchEngine.Events.ActionEventArgs e)
    {

        if (sortByDate && e.ActionData.Name == Keyoti.SearchEngine.Events.ActionName.ResultItemsFinalized)
        {

            Keyoti.SearchEngine.Utils.ResultItemList resultItems = e.ActionData.Data as Keyoti.SearchEngine.Utils.ResultItemList;

            resultItems.Sort(new DocumentDateComparer(sortDirection));

        }

    }

    class DocumentDateComparer : IComparer<Keyoti.SearchEngine.Search.ResultItem>
    //NOTE: .NET1 users, the above line should be "class DocumentDateComparer : IComparer"
    {

        SortDirection sortDirection;

        public DocumentDateComparer(SortDirection sortDirection)
        {

            this.sortDirection = sortDirection;

        }


        public int Compare(Keyoti.SearchEngine.Search.ResultItem x, Keyoti.SearchEngine.Search.ResultItem y)
        //NOTE: .NET1 users, the above line should be "public int Compare(object x, object y)"
        {

            string xData = (x as Keyoti.SearchEngine.Search.ResultItem).DocumentRecord.CustomData;

            string yData = (y as Keyoti.SearchEngine.Search.ResultItem).DocumentRecord.CustomData;

            if (xData.Length == 0 && yData.Length > 0) return 1;

            if (yData.Length == 0 && xData.Length > 0) return -1;

            if (xData.Length == 0 && yData.Length == 0) return 0;

            DateTime xDate, yDate;

            try
            {

                xDate = ParsePDFMetaDate(xData); //DateTime.Parse(xData);

            }

            catch (FormatException)
            {

                //not a date, so make it historic so that it ends up lower in the sort order

                xDate = DateTime.MinValue;

            }

            try
            {

                yDate = ParsePDFMetaDate(yData); //DateTime.Parse(yData);

            }

            catch (FormatException)
            {

                //not a date, so make it historic so that it ends up lower in the sort order

                yDate = DateTime.MinValue;

            }

            if (sortDirection == SortDirection.Descending)

                return yDate.CompareTo(xDate);

            else

                return xDate.CompareTo(yDate);

        }

    }

}

<ResultItemTemplate>
                <div class="SEResultItem">
                    <table border="0">
                        <tr>
                            <td class="SEResultItemLink"
                                style="font-family:sans-serif, Verdana, Arial, Helvetica; font-size:10pt; ">
                                <a href="<%# Container.Uri %>"><%# Container.Title %></a>
            <b>                    <asp:Label runat=server ID="dateLabel" /></b>
                            </td>