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dotmayswind.data's Introduction

DotMaysWind.Data

非常轻量级的数据库访问工具库,链式代码编写,封装了SQL语句以及各个数据库中常用的函数,支持Access、SQLite、SQL Server CE、SQL Server、MySQL以及Oracle数据库。

自己和小伙伴们的项目常使用该框架实现数据库操作,目前处于并将长期处于alpha或beta版。

在Web.config或App.config中配置好连接字符串:

<connectionStrings>
<add name="MainDatabase" connectionString="Data Source=SERVER_ADDRESS;Initial Catalog=DATABASE_NAME;Pooling=true;User ID='USERNAME';Password='PASSWORD';" providerName="System.Data.SqlClient"/>
</connectionStrings>

DotMaysWind.Data支持以下两种方式:

1、伪·Orm风格:

using System;
using System.Collections.Generic;

using DotMaysWind.Data;
using DotMaysWind.Data.Orm;

public class User
{
    public Int32 UserID { get; set; }
    public String UserName { get; set; }
}

public class UserDataRepository : AbstractDatabaseTable<User>
{
    private const String UserIDColumn = "UserID";
    private const String UserNameColumn = "UserName";

    public UserDataRepository()
        : base(MainDatabase.Instance) { }

    public override String TableName
    {
        get { return "tbl_Users"; }
    }

    protected override User CreateEntity(Object sender, EntityCreatingArgs args)
    {
        User entity = new User();

        entity.UserID = this.LoadInt32(args, UserIDColumn);
        entity.UserName = this.LoadString(args, UserNameColumn);

        return entity;
    }

    public Boolean InsertEntity(User user)
    {
        return this.Insert()
            .Set(UserIDColumn, user.UserID)
            .Set(UserNameColumn, user.UserName)
            .Result() > 0;
    }

    public Boolean UpdateEntity(User user)
    {
        return this.Update()
            .Set(UserNameColumn, user.UserName)
            .Where(c => c.Equal(UserIDColumn, user.UserID))
            .Result() > 0;
    }

    public Boolean DeleteEntity(Int32 userID)
    {
        return this.Delete()
            .Where(c => c.Equal(UserIDColumn, userID))
            .Result() > 0;
    }

    public List<User> GetEntities(Int32 pageSize, Int32 pageIndex)
    {
        return this.Select()
            .Querys(UserIDColumn, UserNameColumn)
            .OrderByAsc(UserNameColumn)
            .Paged(pageSize, pageIndex)
            .ToEntityList<User>(this);
    }
    
    public Int32 CountAllEntities()
    {
        return this.Select().Count();
    }
}

internal static class MainDatabase
{
    private static IDatabase _database;

    internal static IDatabase Instance
    {
        get { return _database; }
    }

    static MainDatabase()
    {
        _database = DatabaseFactory.CreateDatabase("MainDatabase");
    }
}

2、真·Orm风格:

using System;
using System.Collections.Generic;

using DotMaysWind.Data;
using DotMaysWind.Data.Linq;
using DotMaysWind.Data.Orm;

[DatabaseTable("tbl_Users")]
public class User
{
    [DatabaseColumn("UserID")]
    public Int32 UserID { get; set; }

    [DatabaseColumn("UserName")]
    public String UserName { get; set; }
}

public class UserDataRepository : DatabaseTable<User>
{
    public UserDataRepository()
        : base(MainDatabase.Instance) { }

    public Boolean InsertEntity(User user)
    {
        return this.Insert()
            .Set(user)
            .Result() > 0;
    }

    public Boolean UpdateEntity(User user)
    {
        return this.Update()
            .Set<User>(c => user.UserName, user.UserName)
            .Where<User>(c => c.UserID == user.UserID)
            .Result() > 0;
    }

    public Boolean DeleteEntity(Int32 userID)
    {
        return this.Delete()
            .Where<User>(c => c.UserID == userID)
            .Result() > 0;
    }

    public List<User> GetEntities(Int32 pageSize, Int32 pageIndex)
    {
        return this.Select()
            .Querys<User>(c => new { c.UserID, c.UserName })
            .OrderByAsc(c => c.UserName)
            .Paged(pageSize, pageIndex)
            .ToEntityList<User>(this);
    }
    
    public Int32 CountAllEntities()
    {
        return this.Select().Count();
    }
}

internal static class MainDatabase
{
    private static IDatabase _database;

    internal static IDatabase Instance
    {
        get { return _database; }
    }

    static MainDatabase()
    {
        _database = DatabaseFactory.CreateDatabase("MainDatabase");
    }
}

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dotmayswind.data's Issues

Can't insert large string to SQL Server!

Hi,

When trying to insert large text (with length about 90000 or above) the field contain an empty string, the field type is ntext. Anyone know the problem please help me. Thanks a lot.

BUG : "SqlConditionBuilder.In()"

System.InvalidCastException: 对象必须实现 IConvertible。

在 System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)

在 System.Data.SqlClient.SqlParameter.CoerceValue(Object value, MetaType destinationType);将参数值从 List`1 转换到 String 失败。;System.Object CoerceValue(System.Object, System.Data.SqlClient.MetaType); 在 System.Data.SqlClient.SqlParameter.CoerceValue(Object value, MetaType destinationType)

在 System.Data.SqlClient.SqlParameter.GetCoercedValue()

在 System.Data.SqlClient.SqlParameter.Validate(Int32 index, Boolean isCommandProc)

在 System.Data.SqlClient.SqlCommand.BuildParamList(TdsParser parser, SqlParameterCollection parameters)

在 System.Data.SqlClient.SqlCommand.BuildExecuteSql(CommandBehavior behavior, String commandText, SqlParameterCollection parameters, _SqlRPC& rpc)

在 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)

在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)

在 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)

在 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)

在 System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)

在 System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)

在 System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)

在 System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)

在 System.Data.Common.DbDataAdapter.Fill(DataSet dataSet)

在 DotMaysWind.Data.Helper.DataSetHelper.InternalCreateDataSet(DbProviderFactory dbProvider, DbCommand dbCommand, String[] tableNames)

在 DotMaysWind.Data.Helper.DataSetHelper.InternalCreateDataSet(DbProviderFactory dbProvider, DbCommand dbCommand)

在 DotMaysWind.Data.AbstractDatabase.ExecuteDataSet(DbCommand dbCommand, DbConnection connection, DbTransaction transaction)

在 DotMaysWind.Data.AbstractDatabase.ExecuteDataTable(DbCommand dbCommand, DbConnection connection, DbTransaction transaction)

在 DotMaysWind.Data.AbstractDatabase.ExecuteDataTable(ISqlCommand command)

在 DotMaysWind.Data.Orm.SelectCommandExtension.ToEntityList[T](SelectCommand cmd, AbstractDatabaseTable`1 table)

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