[源代码]

在前文 [源代码] - C#代码搜索器 中我开发了一个代码搜索器. 我对其做的最后改动是将索引保存到磁盘中, 以备今后使用.

如今, 我在工作中又接到一项新任务: 有一个大项目, 其中10个负责数据访问的service即将被淘汰, 将会替换成entity framework的方式. 这10个service一共有近130个operation. 项目中所有调用这些operation的地方都必须被替换成新的EF方式. 整个项目有47902个cs文件. 现在要做个分析, 找到所有需要修改的地方.

稍作思考, 开工! 

先创建一个console project, 引入WEBUS2.0 SDK. 将10个service和130个operation的信息放到字符串数组中:

static string[] DS_OP_List = new string[] {
    "xxxxDS.CalculatePilotCloseOut",
    "xxxxDS.CreatexxFirstAcont",
    "xxxxDS.CreatexxUnallocatedULD",
    "xxxxDS.xxCargoGetTare",
    "xxxxDS.xxCargoCreateAbulk",
    "xxxxDS.xxCargoDeleteAbulk",
    "xxxxDS.xxCargoMoveAbulk"
    ...
}; //共130个, 公司有规定, 所以用xxx替代真实值 :)

然后打开Index (关于如何创建Index请参见前文:  [源代码] - C#代码搜索器), 再循环对operation进行搜索:

static void Main(string[] args)
{
    IIndexer index = new IndexManager(); //构造索引对象
    index.Open(@"C:xxxCodeSearch.Index", IndexOpenMode.Read); //以只读方式打开索引
    ISearcher se = new IndexSearcher(index); //构造搜索对象
    using (CSVFile csv = new CSVFile(@"c:	empxx_DS_Analysis.csv")) //将结果保存在csv文件中
    {
        foreach (var ds_op in DS_OP_List)
        {
            var key = ds_op.Split('.')[1].ToLower(); //从Service.Operation中提取Operation, 比如从xxxxDS.CalculatePilotCloseOut中提取CalculatePilotCloseOut中提取
            var hits = se.Search(string.Format("Code="{0}"", key)); //搜索表达式: Code="CalculatePilotCloseOut"
            Console.WriteLine("{0}/{1}", key, hits.Count);
            foreach (HitDoc hit in hits)
            {
                csv.Write(ds_op, hit.GetDoc().GetField("FileName").Value.ToString()); //依次输出"服务名", "方法名", "文件名"到csv中
            }
        }
    }
    Console.ReadLine();
}

最后上一个生成CSV文件的工具类:

public class CSVFile : IDisposable
{
    public string FileName { get; private set; }
    private StreamWriter sw = null;
    private StreamReader sr = null;
    private FileStream fsWrite = null;
    private FileStream fsRead = null;

    public CSVFile(string filename)
        : this(filename, Encoding.UTF8, FileMode.OpenOrCreate)
    {
    }

    public CSVFile(string filename, FileMode mode)
        : this(filename, Encoding.UTF8, mode)
    {
    }

    public CSVFile(string filename, Encoding encoding, FileMode mode)
    {
        this.FileName = filename;
        fsWrite = new FileStream(filename, mode, FileAccess.Write, FileShare.Read);
        fsWrite.Seek(0, SeekOrigin.End);
        fsRead = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
        sw = new StreamWriter(fsWrite, encoding);
        sr = new StreamReader(fsRead, encoding);
    }

    public void Close()
    {
        sw.Close();
        sr.Close();
    }

    public string[] Read()
    {
        string text = sr.ReadLine();
        if (string.IsNullOrEmpty(text))
        {
            return null;
        }
        return text.Split(',');
    }

    public string[] FindNext(string startKeyword, StringComparison comparisonType = StringComparison.InvariantCultureIgnoreCase)
    {
        string[] result = null;
        while ((result = this.Read()) != null)
        {
            if (result[0].StartsWith(startKeyword, comparisonType))
            {
                return result;
            }
            else
            {
                continue;
            }
        }
        return null;
    }

    public void Write(params string[] values)
    {
        StringBuilder sb = new StringBuilder();
        foreach (var v in values)
        {
            sb.Append(v + ",");
        }
        sw.WriteLine(sb.ToString().Substring(0, sb.Length - 1));
    }

    public void Dispose()
    {
        this.Close();
    }
}

ok, 大功告成! 运行: