WEP_V2.1.3/SourceCode/We.Engine/WeEngine.Core/Components/Statements/DataSourceOperationStatement.cs

using System.Collections;
using System.Data;
using IwbZero.IocNamed;
using IwbZero.IwbBase;
using IwbZero.IwbDataQuery;
using IwbZero.ToolCommon.StringModel;
using WeEngine.ComponentInfo;
using WeEngine.Components.InterfaceFactory;

namespace WeEngine.Components.Statements
{
    /// <summary>
    /// 设置数据源记录条数
    /// </summary>
    [IocNamed(CompStmtType.DataSourceOperation)]
    public class DataSourceOperationStatement : IStatementRunner
    {
        public bool Run(ComponentRunner runner, IwbXmlNode poStatement)
        {
            string str = poStatement.GetChildValue("Operation").UAndT();
            string childValue = poStatement.GetChildValue("Condition");
            string pcDataSourceId = poStatement.GetChildValue("DataSourceId");
            string str4 = poStatement.GetChildValue("OriginalId");
            IwbDataSource dataSource = runner.GetDataSource(pcDataSourceId);
            IwbDataSource source2 = null;
            if (str4 != "")
            {
                source2 = runner.GetDataSource(str4);
            }
            if (dataSource == null)
            {
                return false;
            }
            switch (str)
            {
                case "OPEN":
                {
                    ArrayList list = Condition.ConditionMappingToArrayList(childValue);
                    string pcSource = "";
                    foreach (Condition condition in list)
                    {
                        string str6;
                        string source = condition.Source;
                        string key = condition.Target.UAndT();
                        if (runner.FilterFields.ContainsKey(key))
                        {
                            str6 = runner.FilterFields[key].ToString();
                            if (str6 == "")
                            {
                                source = "";
                            }
                        }
                        else
                        {
                            str6 = runner.Evaluate(condition.Target);
                        }
                        if (source != "")
                        {
                            pcSource = pcSource.AddStr( $"[{source}]=[{str6}]");
                        }
                    }
                    IwbQuery query = dataSource.GetData(pcSource);
                    if ((query != null) && query.IsOpened)
                    {
                        dataSource.Data = query;
                        return true;
                    }
                    return false;
                }
                    
                case "NEWRECORD":
                    if ((dataSource.Data != null) && dataSource.Data.IsOpened)
                    {
                        dataSource.Data.NewRow();
                    }
                    return true;

                case "DELETERECORD":
                    if ((dataSource.Data != null) && (dataSource.Data.CurrentRow != null))
                    {
                        dataSource.Data.DeleteCurrentRow();
                    }
                    return true;

                case "CLEAR":
                    if ((dataSource.Data != null) && dataSource.Data.IsOpened)
                    {
                        dataSource.Data.CurrentTable.Rows.Clear();
                        dataSource.Data.CurrentTable.AcceptChanges();
                    }
                    return true;

                case "ACCEPT":
                    if ((dataSource.Data != null) && dataSource.Data.IsOpened)
                    {
                        dataSource.Data.CurrentTable.AcceptChanges();
                    }
                    return true;

                case "UNDO":
                    if ((dataSource.Data != null) && dataSource.Data.IsOpened)
                    {
                        dataSource.Data.CurrentTable.RejectChanges();
                    }
                    return true;

                case "COPYCURRENT":
                    if (((dataSource.Data != null) && dataSource.Data.IsOpened) && ((source2?.Data != null) && (source2.Data.CurrentRow != null)))
                    {
                        dataSource.Data.AddCurrentRowFrom(source2.Data);
                    }
                    return true;

                case "COPYRECORDS":
                    if (((dataSource.Data != null) && dataSource.Data.IsOpened) && ((source2?.Data != null) && (source2.Data.CurrentRow != null)))
                    {
                        DataRow currentRow = source2.Data.CurrentRow;
                        childValue = Condition.ConditionMappingToConditionString(childValue);
                        for (int i = 0; i < source2.Data.RecCount; i++)
                        {
                            source2.Data.Go(i);
                            if (runner.EvaluateBool(childValue))
                            {
                                dataSource.Data.AddCurrentRowFrom(source2.Data);
                            }
                        }
                        source2.Data.GoTo(currentRow);
                    }
                    return true;

                case "Sort":
                {
                    ArrayList list2 = poStatement.GetChildValue("Sorting").MappingToArrayList();
                    string pcSort = "";
                    foreach (IwbIdName name in list2)
                    {
                        string str12 = pcSort;
                        pcSort = str12 + name.Id + " " + name.Name + ",";
                    }
                    pcSort = pcSort.TrimEnd(new char[] { ',' });
                    if (pcSort != "")
                    {
                        dataSource.Data.SortBy(pcSort);
                    }
                    return true;
                }
            }
            return true;


        }

    }
}