using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;

namespace WmData {
    /// <summary>
    /// WmDataTransaction: designed to register mutation on the data backend for
    /// high availability syncing support.
    /// Created 2nd of August 2010
    /// </summary>
    public class WmDataTransaction : IComparable{
        protected int id;
        
        protected long localMomentUtcTicks;
        protected long remoteMomentUtcTicks;

        protected string tableName;
        protected int objectId;
        protected int dataRowActionId;

        protected string nameValueQueryString;

        protected long tableChecksumAfterThisTransaction;

        public int Id {
            get { return id; }
            set { id = value; }
        }
        public long LocalMomentUtcTicks {
            get { return localMomentUtcTicks; }
            set { localMomentUtcTicks = value; }
        }
        public long RemoteMomentUtcTicks {
            get { return remoteMomentUtcTicks; }
            set { remoteMomentUtcTicks = value; }
        }
        public string TableName {
            get { return tableName; }
            set { tableName = value; }
        }
        public int ObjectId {
            get { return objectId; }
            set { objectId = value; }
        }
        public int DataRowActionId {
            get { return dataRowActionId; }
            set { dataRowActionId = value; }
        }
        public WmDataRowAction DataRowAction {
            get { return (WmDataRowAction)Enum.ToObject(typeof(WmDataRowAction), DataRowActionId); }
            set { DataRowActionId = (int)value; }
        }
        public string NameValueQueryString {
            get { return nameValueQueryString; }
            set { nameValueQueryString = value; }
        }
        public long TableChecksumAfterThisTransaction {
            get { return tableChecksumAfterThisTransaction; }
            set { tableChecksumAfterThisTransaction = value; }
        }
        public NameValueCollection getNameValueCollection() {
            return WmDataTools.getNameValueCollectionFromQueryString(NameValueQueryString);
        }

        public int CompareTo(object obj) {
            if (!(obj is WmDataTransaction)) {
                throw new InvalidCastException("This object is not of type WmDataTransaction");
            }

            WmDataTransaction other = (WmDataTransaction)obj;
            return this.LocalMomentUtcTicks.CompareTo(other.LocalMomentUtcTicks) ;
        }
    }
}