Castle Windsor Part 2 - Array configuration, dictionary configuration

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Part 2 – Array Configuration
Part 3 – Dictionary configuration

Xem lại Part 1 - Configuration parameters.

Array configuration

Đầu tiên là config array.

Ví dụ holiday service có code như sau:

using Castle.Windsor;
using Castle.Windsor.Configuration.Interpreters;
using System;

namespace ConsoleApp
{
    public class HolidayService
    {
        private DateTime[] holidays;

        public DateTime[] Holidays
        {
            get { return holidays; }
            set { holidays = value; }
        }

        public bool IsHoliday(DateTime date)
        {
            if (holidays != null)
            {
                DateTime matchDate = date.Date;
                foreach (DateTime dt in Holidays)
                {
                    if (dt.Date.Equals(matchDate))
                    {
                        return true;
                    }
                }
            }

            return false;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            WindsorContainer container = new WindsorContainer(new XmlInterpreter());

            HolidayService holidayService = container.Resolve<HolidayService>();

            DateTime xmas = new DateTime(2016, 12, 25);
            DateTime newYears = new DateTime(2017, 1, 1);

            if (holidayService.IsHoliday(xmas))
            {
                Console.WriteLine("Merry X'mas!");
            }
            else
            {
                Console.WriteLine("X'mas is only for management!");
            }

            if (holidayService.IsHoliday(newYears))
            {
                Console.WriteLine("Happy new year!");
            }
            else
            {
                Console.WriteLine("New year, you haven't done all the work for last year!");
            }

            Console.ReadLine();
        }
    }
}

Config trong App.config như sau:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="castle" type="Castle.Windsor.Configuration.AppDomain.CastleSectionHandler, Castle.Windsor"/>
  </configSections>
  <castle>
    <components>
      <component type="ConsoleApp.HolidayService, ConsoleApp">
        <parameters>
          <holidays>
            <array>
              <item>2016-12-24</item>
              <item>2016-12-25</item>
              <item>2017-1-1</item>
            </array>
          </holidays>
        </parameters>
      </component>
    </components>
  </castle>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" />
  </startup>
</configuration>

Có thể dùng <Holidays> hoặc <holidays> đều được vì Windsor đủ smart để inject. Nếu muốn resolve trực tiếp ra IList (hoặc IList, IEnumerable ... nói chung là generic collection)

static void Main(string[] args)
{
    WindsorContainer container = new WindsorContainer(new XmlInterpreter());
    var holidays = container.Resolve<IList<DateTime>>("holidays");
    Console.WriteLine(string.Join("\r\n", holidays));
    Console.ReadLine();
}

File config tương ứng như sau:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="castle" type="Castle.Windsor.Configuration.AppDomain.CastleSectionHandler, Castle.Windsor"/>
  </configSections>
  <castle>
    <components>
      <component id="holidays" type="System.Collections.Generic.List`1[System.DateTime]">
        <parameters>
          <collection>
            <array>
              <item>2016-12-24</item>
              <item>2016-12-25</item>
              <item>2017-1-1</item>
            </array>
          </collection>
        </parameters>
      </component>
    </components>
  </castle>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" />
  </startup>
</configuration>

Cần nhớ ở dạng config này là thực hiện theo <parameters><collection><array><item>. Nếu đầy đủ hơn thì type chỉ định có cả assembly là <component id="holidays" type="System.Collections.Generic.List`1[[System.DateTime, mscorlib]], mscorlib">.

Dictionary configuration

Tương tự như array, dictionary configuration thực hiện với <parameters><dictionary><dictionary><entry>. Ví dụ AliasService như sau:

using Castle.Windsor;
using Castle.Windsor.Configuration.Interpreters;
using System;
using System.Collections.Generic;

namespace ConsoleApp
{
    public class AliasService
    {
        private Dictionary<string, string> dict;

        public Dictionary<string, string> Aliases
        {
            get { return dict; }
            set { dict = value; }
        }

        public string Evaluate(string term)
        {
            if (dict == null)
            {
                return term;
            }

            while (dict.ContainsKey(term))
            {
                term = dict[term];
            }

            return term;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            WindsorContainer container = new WindsorContainer(new XmlInterpreter());

            AliasService aliasService = container.Resolve<AliasService>();
            string sentence = "A dog ate my homework";

            foreach (string word in sentence.Split(new char[] { ' ' }, 
                StringSplitOptions.RemoveEmptyEntries))
            {
                Console.Write("{0} ", aliasService.Evaluate(word));
            }

            Console.ReadLine();
        }
    }
}

App.config cấu hình dictionary:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="castle" type="Castle.Windsor.Configuration.AppDomain.CastleSectionHandler, Castle.Windsor"/>
  </configSections>
  <castle>
    <components>
      <component type="ConsoleApp.AliasService, ConsoleApp">
        <parameters>
          <Aliases>
            <dictionary>
              <entry key="dog">duck</entry>
              <entry key="ate">broke</entry>
              <entry key="homework">code</entry>
            </dictionary>
          </Aliases>
        </parameters>
      </component>
    </components>
  </castle>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" />
  </startup>
</configuration>

Để resolve trực tiếp ra IDictionary

static void Main(string[] args)
{
    WindsorContainer container = new WindsorContainer(new XmlInterpreter());
    var states = container.Resolve<IDictionary<string, string>>("states");
    Console.WriteLine(string.Join("\r\n", states.Keys));
    Console.ReadLine();
}

File config tương ứng như sau:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="castle" type="Castle.Windsor.Configuration.AppDomain.CastleSectionHandler, Castle.Windsor"/>
  </configSections>
  <castle>
    <components>
      <component id="states" type="System.Collections.Generic.Dictionary`2[System.String, System.String]">
        <parameters>
          <dictionary>
            <dictionary>
              <entry key="VN-CT">Cần Thơ</entry>
              <entry key="VN-DN">Đà Nẵng</entry>
              <entry key="VN-HN">Hà Nội</entry>
              <entry key="VN-HP">Hải Phòng</entry>
              <entry key="VN-SG">Hồ Chí Minh</entry>
            </dictionary>
          </dictionary>
        </parameters>
      </component>
    </components>
  </castle>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" />
  </startup>
</configuration>

Tới đây là xong part 2. Về type convertor có thể tham khảo thêm phần Configuration with type converters trong series của Mike Hadlow '10 Advanced Windsor tricks'.