using System;
using System.Collections;
using System.Data;
using System.Web;
using Zhaizj.Framework;
using Zhaizj.Framework.Data;
using Zhaizj.Framework.Web;

namespace Zhaizj.Framework.ORM.Operation {

    internal class FindPageOperation {

        private static readonly ILog logger = LogManager.GetLogger( typeof( FindPageOperation ) );
                
        public static IList FindPage( ObjectInfo state ) {
            return FindPage( state, "" );
        }

        public static IList FindPage( ObjectInfo state, String queryString ) {

            // see: Zhaizj.Framework/Zhaizj.Framework/Web/Mvc/Routes/RouteTool.cs, line 211

            if (state.Pager.getCurrent() <= 0) {
                int page = CurrentRequest.getCurrentPage();
                state.Pager.setCurrent( page );
            }

            if ( queryString != null && queryString.ToLower().StartsWith( "order " )) {
                queryString = " " + queryString;
            }

            PageCondition pc = new PageCondition();
            pc.ConditionStr = queryString;
            pc.Property = state.Includer.SelectedProperty;
            pc.CurrentPage = state.Pager.getCurrent();
            pc.Size = state.Pager.getSize();
            pc.OrderStr = state.Order;
            pc.Pager = state.Pager;

            String sql = new SqlBuilder( state.EntityInfo ).GetPageSql( pc );
            return EntityPropertyUtil.FindList( state, sql );
        }




    }
}