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

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

namespace WeEngine.Components.Statements
{
    /// <summary>
    /// 多条记录循环执行事务
    /// </summary>
    [IocNamed(CompStmtType.LoopQuery)]
    public class LoopQueryStatement : IStatementRunner
    {

        public bool Run(ComponentRunner runner, IwbXmlNode poStatement)
        {
            {
                bool flag = true;
                string childValue = poStatement.GetChildValue("Condition");
                string pcDataSourceId = poStatement.GetChildValue("DataSourceId");
                IwbXmlNode childNode = poStatement.GetChildNode("Content");
                IwbDataSource dataSource = runner.GetDataSource(pcDataSourceId);
                if ((childNode != null) && (childNode.Nodes.Count > 0))
                {
                    if (((dataSource == null) || (dataSource.Data == null)) || !dataSource.Data.IsOpened)
                    {
                        return false;
                    }
                    var data = dataSource.Data;
                    DataRow currentRow = data.CurrentRow;
                    //data.IsToFireRecordMovedEvent = false;
                    data.MoveFirst();
                    childValue = Condition.ConditionMappingToConditionString(childValue);
                    childValue= childValue.Replace("[", "").Replace("]", "");
                    for (int i = 0; i < data.RecCount; i++)
                    {
                        data.Go(i);
                        //runner.ShowRecordInfo(recCount, i + 1, "");
                        if (runner.EvaluateBool(childValue))
                        {
                            runner.RunStatements(childNode.Nodes);
                        }
                        if (!runner.ProcessResult)
                        {
                            flag = false;
                            break;
                        }
                    }
                    data.GoTo(currentRow);
                    //data.IsToFireRecordMovedEvent = true;
                }
                return flag;
            }

        }

    }
}