博客园_叶子的家

Suspicions about the new platform

2011-06-09T01:31:00Z

1. 为什么要用mongodb？

- mongodb擅长处理关系类型数据吗？

- 用mongodb但舍弃linq（不能用第三方的linq支持），浪费！

- 怎么用mongo搞复杂的查询？噩梦啊。。。。

2. 为什么要用Redis做cache？

- 对我来说Redis是个庞然大物，项目刚启动就把Redis建起来，然后整个cache都依赖于Redis，不但增加了时间和金钱的成本，还有使用Redis的一些不稳定的因素，是否这些都要考虑呢？

- Cache是需要的，cache最重要的一个目标就是提高响应性能，初期阶段最好就是放个cache接口在那好了，等到实际需要的时候再考虑用什么实现。

3. 为什么要Postsharp？

- 竟然要AOP，选个IL level的好吗？

- 每个程序员都要装个PostSharp才能开发，麻烦！

- 每次编译你都给我增加那么点时间，+++++那就是很多时间。

- code level多好啊，dynamic proxy要怎么用就怎么用

本文链接

dynamic sorting expression builder

2010-10-11T00:09:00Z

public static class Paging
    {
        public interface ISortbyBuilder<TSource>
        {
            IQueryable<TSource> SortBy(IQueryable<TSource> obj, LambdaExpression keySelector, bool asc);
        }

        public class SortbyBuilder<TSource, TKey> : ISortbyBuilder<TSource>
        {
            public IQueryable<TSource> SortBy(IQueryable<TSource> obj, LambdaExpression keySelector, bool asc)
            {
                var castedKeySelector = (Expression<Func<TSource, TKey>>) keySelector;
                return asc ? obj.OrderBy(castedKeySelector) : obj.OrderByDescending(castedKeySelector);
            }
        }

        public class SortbyBuilderCache<TSource>
        {
            private static readonly IDictionary<Type, ISortbyBuilder<TSource>> Cache = new Dictionary<Type, ISortbyBuilder<TSource>>();

            public static IQueryable<TSource> SortBy(IQueryable<TSource> obj, LambdaExpression keySelector, bool asc)
            {
                // TODO: I told you this is magic!
                var selectorReturnType = keySelector.Body.Type;
                ISortbyBuilder<TSource> sortbyBuilder;
                if (!Cache.TryGetValue(selectorReturnType, out sortbyBuilder))
                {
                    var typeArguments = new[] { typeof(TSource), selectorReturnType };
                    var builderType = typeof(SortbyBuilder<,>).MakeGenericType(typeArguments);
                    sortbyBuilder = (ISortbyBuilder<TSource>)Activator.CreateInstance(builderType);
                }
                return sortbyBuilder.SortBy(obj, keySelector, asc);
            }
        }

        public static IPagination<T> AsPagination<T>(this IQueryable<T> obj, int pageNumber, int pageSize, string sortExpression)
        {
            sortExpression = sortExpression ?? string.Empty;
            var asc = !sortExpression.Contains("DESC");

            var sortKey = sortExpression.Split(' ')[0];

            if (string.IsNullOrEmpty(sortKey) || TypeDescriptor.GetProperties(typeof (T)).Find(sortKey, false) == null)
            {
                return obj.AsPagination(pageNumber, pageSize);
            }

            // TODO: magic
            var parameterExpression = Expression.Parameter(typeof (T));
            var propertyExpression = Expression.Property(parameterExpression, sortKey);
            LambdaExpression lambdaExpression;
            if (typeof (IEnumerationWrapper).IsAssignableFrom(propertyExpression.Type))
            {
                var valueExpression = Expression.Property(propertyExpression, "Value");
                lambdaExpression = Expression.Lambda(valueExpression, new[] {parameterExpression});
            }
            else
            {
                lambdaExpression = Expression.Lambda(propertyExpression, new[] {parameterExpression});
            }

            return SortbyBuilderCache<T>.SortBy(obj, lambdaExpression, asc).AsPagination(pageNumber, pageSize);

        }

        public static IPagination<T> AsPagination<T, TKey>(this IQueryable<T> obj, int pageNumber, int pageSize, Expression<Func<T, TKey>> keySelector, bool asc)
        {
            return asc ? obj.OrderBy(keySelector).AsPagination(pageNumber, pageSize) : obj.OrderByDescending(keySelector).AsPagination(pageNumber, pageSize);
        }
    }

本文链接

How to create your own api with ACL in Magento

2010-03-12T03:18:00Z

Finally, I got my customize api works with Magento today. I was confusing by the complex configuration xml files in magento, here I post my example which might be helpful though.

This example passed testing under Magento ver 1.3.2.4 using XML-RPC in .net platform.

Steps:

1. /app/etc/modules/Hanix_All.xml

1 <?xml version="1.0"?>
2 <config>
3   <modules>
4     <Hanix_Customize>
5       <active>true</active>
6       <codePool>local</codePool>
7     </Hanix_Customize>
8   </modules>
9 </config>

2. /app/code/local/Hanix/

3. /app/code/local/Hanix/Customize/etc/config.xml

1 <?xml version="1.0"?>
2 <config>
3
4   <modules>
5     <Hanix_Customize>
6       <version>0.1.0</version>
7     </Hanix_Customize>
8   </modules>
9
10   <global>
11
12     <models>
13       <customize>
14         <class>Hanix_Customize_Model</class>
15       </customize>
16     </models>
17
18   </global>
19
20 </config>

4. /app/code/local/Hanix/Customize/etc/api.xml

1 <?xml version="1.0"?>
2 <config>
3   <api>
4
5     <resources>
6       <customize_api translate="title" module="customize">
7
8         <title>Customize Resource</title>
9         <model>customize/api</model>
10         <acl>customize</acl>
11
12         <methods>
13           <test translate="title" module="customize">
14             <title>Test Method</title>
15             <acl>customize/test</acl>
16           </test>
17         </methods>
18
19       </customize_api>
20     </resources>
21
22     <acl>
23       <resources>
24         <customize translate="title" module="customize">
25           <title>Customize APIs</title>
26           <sort_order>1</sort_order>
27           <test translate="title" module="customize">
28             <title>Test api</title>
29           </test>
30         </customize>
31       </resources>
32     </acl>
33
34   </api>
35 </config>

5. /app/code/local/Hanix/Customize/Model/Api.php

1 <?php
2
3 class Hanix_Customize_Model_Api extends Mage_Api_Model_Resource_Abstract
4 {
5     public function test()
6     {
7         return "hello test...";
8     }
9 }

OK! that are the five steps what you need to be done. And don't forget to refresh the magento cache or just simply disable it. Now go to Magento backend: System/Web Service/Roles. Your api will be there.

Now, you can create an web service account to perform test. I used my own xml-rpc api showed below:

As can be seen, string "hello test..." returns correctly.

本文链接

台服信长之野望全后台辅助外挂

2009-07-22T01:49:00Z

最近有平时有玩信长之野望，在台服。此游戏战斗模式比较特殊，而且内容相当的丰富，很是吸引我。玩了一段时间后，这辅助外挂在我手下就诞生了，发图纪念：简介：外挂主要处理战斗中的技能、战斗结束窗口的自动点击，是半自动的外挂。多适合攻手使用，对非攻手职业也可，可能作用不大。特点：1. 带有命令队列，可以自定义一系列战斗命令，命令按顺序发送。比如可以定义一个3条命令的列表，开始战斗后，就按照次列表依次发送 1...

SEO Elite ver 4.0 R93 Patcher

2009-02-12T00:09:00Z

This is myyesterday's cracking work for the last version of SEO Elite(v4 r93). original download:http://www.seoelite.com/SEOE_setup4093.exepatcher download:http://files.cnblogs.com/wj/seo.elite-patch....

Remove 5 seconds constraint in Garena(GGC)

2008-09-09T10:34:00Z

Using UE tomodify the red line command to "JMP" is ok.If you don't know how to modify, just leave me a message.A modified version download (decompress and copy it to your Garena folder):06.03.2009: ht...

Robot development framework in Mush Client (Lua)

2008-07-12T11:40:00Z

Play mud games? Using Mush Client to write robot? Let's see what I show you~This isa framework I wrote for writing robot with Lua Script in Mush Client.The framework enables you dealing with every act...

巧用Marshal.GetDelegateForFunctionPointer--C#如何调用按键精灵插件dll

2008-02-10T07:20:00Z

原来是为了在游戏外挂中发送键盘鼠标消息，自己写个sendmessage或者是postmessage又比较麻烦。于是google了一下，发现现在很多脚本工具都有这个功能，其中按键精灵的一个叫361度的插件已经有这个的实现，还验证过了。为什么不拿来己用呢？首先分析一下按键精灵插件的接口，发现：插件的功能函数没有直接暴露出来，而是通过一个GetCommand的函数返回一个函数描述结构。接下来看看这个结构...

Using .Net, Flex, and Red5 to create a flash web application

2008-01-17T17:15:00Z

This project i developed recently is a web conference application.i used .net with C# to write the web service providing the data access layer(dal) to the flash application for authentication and acco...

做了个C#的Hotkey简单封装，希望对大家有帮助

2007-10-18T06:27:00Z

本来听说winapi里面的RegisterHotKey有时候不好使，于是打算用hook键盘消息来做hook key，结果发现hook那里处理消息那里还挺麻烦，也想会不会造成系统的额外开销比较大，所以最后用RegisterHotKey来封装了一下，测试没有问题，还是可以的。（winform）下面的代码包括一个Textbox的处理，和一个封装了api的类。Textbox那里就是处理用户定义的热键的界面...