基于微软EnterpriseLib的框架(一)

1、框架模型无ORM,重点在数据库建模设计与UI框架设计上

2、多数据库支持（Enterprise Lib 默认仅支持SqlServer和Oracle,需自己扩展才能支持其他数据库,本文已扩展SQLite为例说明）

Client—>DataProxy     通过WebService访问服务端数据服务

Client—>UI    客户端UI

Lib —> ZF.Data.SQLite 扩展Enterprise Lib支持SQLite

DAL 各种数据库的数据访问层(Data Acess Layer)

WebService 针对各个数据库的WebService

重点看下ZF.Data.SQLite的写法及Web.Config 的配置

SQLiteDatabase.cs

using Microsoft.Practices.EnterpriseLibrary.Data;
using Microsoft.Practices.EnterpriseLibrary.Data.Configuration;
using System;
using System.Data.Common;
using System.Data.SQLite;

namespace ZF.Data.SQLite
{
    [DatabaseAssembler(typeof(SQLiteDatabaseAssembler))]
    public class SQLiteDatabase : Database
    {
        private string connectionString;
        public SQLiteDatabase(string connectionString)
            : base(connectionString, SQLiteFactory.Instance)
        {
            this.connectionString = connectionString;
        }
        protected override void DeriveParameters(DbCommand discoveryCommand)
        {
            throw new Exception("The method or operation is not implemented.");
        }
    }
}

SQLiteDatabaseAssembler.cs

using Microsoft.Practices.EnterpriseLibrary.Common.Configuration;
using Microsoft.Practices.EnterpriseLibrary.Data;
using Microsoft.Practices.EnterpriseLibrary.Data.Configuration;
using System;
using System.Configuration;
namespace ZF.Data.SQLite
{
    public class SQLiteDatabaseAssembler : IDatabaseAssembler
    {
        public Database Assemble(string name, ConnectionStringSettings connectionStringSettings, IConfigurationSource configurationSource)
        {
            return new SQLiteDatabase(connectionStringSettings.ConnectionString);
        }
    }
}

web.config

<?xml version="1.0"?>
<configuration>
    <configSections>
        <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data"/>
    </configSections>
    <appSettings/>
    <dataConfiguration defaultDatabase="sqlite">
        <providerMappings>
            <add databaseType="ZF.Data.SQLite.SQLiteDatabase, ZF.Data.SQLite" name="System.Data.SQLite"/>
        </providerMappings>
    </dataConfiguration>
    <connectionStrings>
        <add name="sqlServer" providerName="System.Data.SqlClient" connectionString="Database=test_sql;Server=.;User ID=sa;Password=123456;"/>
        <add name="oracle" providerName="System.Data.OracleClient" connectionString="Data Source=test_orc;User ID=zf;Password=Zf123456"/>
        <add name="sqlite" providerName="System.Data.SQLite" connectionString="Data Source=C:\test_JM.db;Version=3;Password=123456"/>
    </connectionStrings>
    <system.web>
        <compilation debug="true"/>
        <authentication mode="Windows"/>
    </system.web>
</configuration>

例子下载