.NET 常用ORM之iBatis
ibatis 一词来源于“internet”和“abatis”的组合,是一个由Clinton Begin在2001年发起的开放源代码项目,到后面发展的版本叫MyBatis但都是指的同一个东西。最初侧重于密码软件的开发,现在是一个基于Java的持久层框架,渐渐的也把这种模式转移到了net。相对NHibernate等“一站式”ORM解决方案而言,ibatis 是一种“半自动化”的ORM实现。性能不错。
下载地址:http://code.google.com/p/mybatisnet/downloads/list?can=3
一、新建一个项目工程,导入iBatis所需的动态库,IBatisNet.Common.dll和IBatisNet.DataMapper.dll(当然你也可以直接导入下载的iBatis文件包的dll文件)
二、添加iBatis配置文件(三种)
1.providers.config[文件名不能修改]此文件为数据库开发商提供的驱动配置集合,是固定不变的,无需修改与配置,复制文件到网站的根目录,代码如下:
<?xml version="1.0" encoding="utf-8"?>
<providers
xmlns="http://ibatis.apache.org/providers"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <clear/>
<provider
name="sqlServer1.0"
description="Microsoft SQL Server, provider V1.0.3300.0 in framework .NET V1.0"
enabled="false"
assemblyName="System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" connectionClass="System.Data.SqlClient.SqlConnection"
commandClass="System.Data.SqlClient.SqlCommand"
parameterClass="System.Data.SqlClient.SqlParameter"
parameterDbTypeClass="System.Data.SqlDbType"
parameterDbTypeProperty="SqlDbType"
dataAdapterClass="System.Data.SqlClient.SqlDataAdapter"
commandBuilderClass="System.Data.SqlClient.SqlCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix="@"
allowMARS="false"
/>
<provider
name="sqlServer1.1"
description="Microsoft SQL Server, provider V1.0.5000.0 in framework .NET V1.1"
enabled="false"
assemblyName="System.Data, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
connectionClass="System.Data.SqlClient.SqlConnection"
commandClass="System.Data.SqlClient.SqlCommand"
parameterClass="System.Data.SqlClient.SqlParameter"
parameterDbTypeClass="System.Data.SqlDbType"
parameterDbTypeProperty="SqlDbType"
dataAdapterClass="System.Data.SqlClient.SqlDataAdapter"
commandBuilderClass="System.Data.SqlClient.SqlCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix="@"
allowMARS="false"
/>
<provider
name="sqlServer2.0"
enabled="true"
description="Microsoft SQL Server, provider V2.0.0.0 in framework .NET V2.0"
assemblyName="System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
connectionClass="System.Data.SqlClient.SqlConnection"
commandClass="System.Data.SqlClient.SqlCommand"
parameterClass="System.Data.SqlClient.SqlParameter"
parameterDbTypeClass="System.Data.SqlDbType"
parameterDbTypeProperty="SqlDbType"
dataAdapterClass="System.Data.SqlClient.SqlDataAdapter"
commandBuilderClass=" System.Data.SqlClient.SqlCommandBuilder"
usePositionalParameters = "false"
useParameterPrefixInSql = "true"
useParameterPrefixInParameter = "true"
parameterPrefix="@"
allowMARS="false"
/>
<provider
name="sqlServer2005"
enabled="false"
description="Microsoft SQL Server, provider V2.0.0.0 in framework .NET V2.0"
assemblyName="System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
connectionClass="System.Data.SqlClient.SqlConnection"
commandClass="System.Data.SqlClient.SqlCommand"
parameterClass="System.Data.SqlClient.SqlParameter"
parameterDbTypeClass="System.Data.SqlDbType"
parameterDbTypeProperty="SqlDbType"
dataAdapterClass="System.Data.SqlClient.SqlDataAdapter"
commandBuilderClass=" System.Data.SqlClient.SqlCommandBuilder"
usePositionalParameters = "false"
useParameterPrefixInSql = "true"
useParameterPrefixInParameter = "true"
parameterPrefix="@"
allowMARS="true"
/>
<provider name="OleDb1.1"
description="OleDb, provider V1.0.5000.0 in framework .NET V1.1"
enabled="false"
assemblyName="System.Data, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
connectionClass="System.Data.OleDb.OleDbConnection"
commandClass="System.Data.OleDb.OleDbCommand"
parameterClass="System.Data.OleDb.OleDbParameter"
parameterDbTypeClass="System.Data.OleDb.OleDbType"
parameterDbTypeProperty="OleDbType"
dataAdapterClass="System.Data.OleDb.OleDbDataAdapter"
commandBuilderClass="System.Data.OleDb.OleDbCommandBuilder"
usePositionalParameters="true"
useParameterPrefixInSql="false"
useParameterPrefixInParameter="false"
parameterPrefix=""
allowMARS="false"
/>
<provider name="OleDb2.0"
description="OleDb, provider V2.0.0.0 in framework .NET V2"
enabled="false"
assemblyName="System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
connectionClass="System.Data.OleDb.OleDbConnection"
commandClass="System.Data.OleDb.OleDbCommand"
parameterClass="System.Data.OleDb.OleDbParameter"
parameterDbTypeClass="System.Data.OleDb.OleDbType"
parameterDbTypeProperty="OleDbType"
dataAdapterClass="System.Data.OleDb.OleDbDataAdapter"
commandBuilderClass="System.Data.OleDb.OleDbCommandBuilder"
usePositionalParameters="true"
useParameterPrefixInSql="false"
useParameterPrefixInParameter="false"
parameterPrefix=""
allowMARS="false"
/>
<provider
name="Odbc1.1"
description="Odbc, provider V1.0.5000.0 in framework .NET V1.1"
enabled="false"
assemblyName="System.Data, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
connectionClass="System.Data.Odbc.OdbcConnection"
commandClass="System.Data.Odbc.OdbcCommand"
parameterClass="System.Data.Odbc.OdbcParameter"
parameterDbTypeClass="System.Data.Odbc.OdbcType"
parameterDbTypeProperty="OdbcType"
dataAdapterClass="System.Data.Odbc.OdbcDataAdapter"
commandBuilderClass="System.Data.Odbc.OdbcCommandBuilder"
usePositionalParameters="true"
useParameterPrefixInSql="false"
useParameterPrefixInParameter="false"
parameterPrefix="@"
allowMARS="false"
/>
<provider
name="Odbc2.0"
description="Odbc, provider V2.0.0.0 in framework .NET V2"
enabled="false"
assemblyName="System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
connectionClass="System.Data.Odbc.OdbcConnection"
commandClass="System.Data.Odbc.OdbcCommand"
parameterClass="System.Data.Odbc.OdbcParameter"
parameterDbTypeClass="System.Data.Odbc.OdbcType"
parameterDbTypeProperty="OdbcType"
dataAdapterClass="System.Data.Odbc.OdbcDataAdapter"
commandBuilderClass="System.Data.Odbc.OdbcCommandBuilder"
usePositionalParameters="true"
useParameterPrefixInSql="false"
useParameterPrefixInParameter="false"
parameterPrefix="@"
allowMARS="false"
/>
<provider
name="oracle9.2"
description="Oracle, Oracle provider V9.2.0.401"
enabled="false"
assemblyName="Oracle.DataAccess, Version=9.2.0.401, Culture=neutral, PublicKeyToken=89b483f429c47342" connectionClass="Oracle.DataAccess.Client.OracleConnection"
commandClass="Oracle.DataAccess.Client.OracleCommand"
parameterClass="Oracle.DataAccess.Client.OracleParameter"
parameterDbTypeClass="Oracle.DataAccess.Client.OracleDbType"
parameterDbTypeProperty="OracleDbType"
dataAdapterClass="Oracle.DataAccess.Client.OracleDataAdapter"
commandBuilderClass="Oracle.DataAccess.Client.OracleCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="false"
parameterPrefix=":"
useDeriveParameters="false"
allowMARS="false"
/>
<provider
name="oracle10.1"
description="Oracle, oracle provider V10.1.0.301"
enabled="false"
assemblyName="Oracle.DataAccess, Version=10.1.0.301, Culture=neutral, PublicKeyToken=89b483f429c47342" connectionClass="Oracle.DataAccess.Client.OracleConnection"
commandClass="Oracle.DataAccess.Client.OracleCommand"
parameterClass="Oracle.DataAccess.Client.OracleParameter"
parameterDbTypeClass="Oracle.DataAccess.Client.OracleDbType"
parameterDbTypeProperty="OracleDbType"
dataAdapterClass="Oracle.DataAccess.Client.OracleDataAdapter"
commandBuilderClass="Oracle.DataAccess.Client.OracleCommandBuilder"
usePositionalParameters="true"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix=":"
useDeriveParameters="false"
allowMARS="false"
/>
<provider
name="oracleClient1.0"
description="Oracle, Microsoft provider V1.0.5000.0"
enabled="false"
assemblyName="System.Data.OracleClient, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" connectionClass="System.Data.OracleClient.OracleConnection"
commandClass="System.Data.OracleClient.OracleCommand"
parameterClass="System.Data.OracleClient.OracleParameter"
parameterDbTypeClass="System.Data.OracleClient.OracleType"
parameterDbTypeProperty="OracleType"
dataAdapterClass="System.Data.OracleClient.OracleDataAdapter"
commandBuilderClass="System.Data.OracleClient.OracleCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="false"
parameterPrefix=":"
allowMARS="false"
/>
<provider
name="ByteFx"
description="MySQL, ByteFx provider V0.7.6.15073"
enabled="false"
assemblyName="ByteFX.MySqlClient, Version=0.7.6.15073, Culture=neutral, PublicKeyToken=f2fef6fed1732fc1" connectionClass="ByteFX.Data.MySqlClient.MySqlConnection"
commandClass="ByteFX.Data.MySqlClient.MySqlCommand"
parameterClass="ByteFX.Data.MySqlClient.MySqlParameter"
parameterDbTypeClass="ByteFX.Data.MySqlClient.MySqlDbType"
parameterDbTypeProperty="MySqlDbType"
dataAdapterClass="ByteFX.Data.MySqlClient.MySqlDataAdapter"
commandBuilderClass="ByteFX.Data.MySqlClient.MySqlCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix="@"
allowMARS="false"
/>
<provider
name="MySql"
description="MySQL, MySQL provider 1.0.7.30072"
enabled="false"
assemblyName="MySql.Data, Version=1.0.7.30072, Culture=neutral, PublicKeyToken=c5687fc88969c44d" connectionClass="MySql.Data.MySqlClient.MySqlConnection"
commandClass="MySql.Data.MySqlClient.MySqlCommand"
parameterClass="MySql.Data.MySqlClient.MySqlParameter"
parameterDbTypeClass="MySql.Data.MySqlClient.MySqlDbType"
parameterDbTypeProperty="MySqlDbType"
dataAdapterClass="MySql.Data.MySqlClient.MySqlDataAdapter"
commandBuilderClass="MySql.Data.MySqlClient.MySqlCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix="?"
allowMARS="false"
/>
<provider name="SQLite3 Finisar"
description="SQLite, SQLite.NET provider V0.21.1869.3794"
enabled="false"
assemblyName="SQLite.NET, Version=0.21.1869.3794, Culture=neutral, PublicKeyToken=c273bd375e695f9c"
connectionClass="Finisar.SQLite.SQLiteConnection"
commandClass="Finisar.SQLite.SQLiteCommand"
parameterClass="Finisar.SQLite.SQLiteParameter"
parameterDbTypeClass="System.Data.DbType, System.Data"
parameterDbTypeProperty="DbType"
dataAdapterClass="Finisar.SQLite.SQLiteDataAdapter"
commandBuilderClass="Finisar.SQLite.SQLiteCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix="@"
setDbParameterPrecision="false"
setDbParameterScale="false"
allowMARS="false"
/>
<provider name="SQLite3"
description="SQLite, SQLite.NET provider V1.0.43.0"
enabled="false"
assemblyName="System.Data.SQLite, Version=1.0.43.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139"
connectionClass="System.Data.SQLite.SQLiteConnection"
commandClass="System.Data.SQLite.SQLiteCommand"
parameterClass="System.Data.SQLite.SQLiteParameter"
parameterDbTypeClass="System.Data.SQLite.SQLiteType"
parameterDbTypeProperty="DbType"
dataAdapterClass="System.Data.SQLite.SQLiteDataAdapter"
commandBuilderClass="System.Data.SQLite.SQLiteCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix="@"
setDbParameterPrecision="false"
setDbParameterScale="false"
allowMARS="false"
/>
<provider
name="Firebird1.7"
description="Firebird, Firebird SQL .NET provider V1.7.0.33200"
enabled="false"
assemblyName="FirebirdSql.Data.Firebird, Version=1.7.0.33200, Culture=neutral, PublicKeyToken=fa843d180294369d" connectionClass="FirebirdSql.Data.Firebird.FbConnection"
commandClass="FirebirdSql.Data.Firebird.FbCommand"
parameterClass="FirebirdSql.Data.Firebird.FbParameter"
parameterDbTypeClass="FirebirdSql.Data.Firebird.FbDbType"
parameterDbTypeProperty="FbDbType"
dataAdapterClass="FirebirdSql.Data.Firebird.FbDataAdapter"
commandBuilderClass="FirebirdSql.Data.Firebird.FbCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix="@"
allowMARS="false"
/>
<provider
name="PostgreSql0.99.1.0"
description="PostgreSql, Npgsql provider V0.99.1.0"
enabled="false"
assemblyName="Npgsql, Version=0.99.1.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7"
connectionClass="Npgsql.NpgsqlConnection"
commandClass="Npgsql.NpgsqlCommand"
parameterClass="Npgsql.NpgsqlParameter"
parameterDbTypeClass="NpgsqlTypes.NpgsqlDbType"
parameterDbTypeProperty="NpgsqlDbType"
dataAdapterClass="Npgsql.NpgsqlDataAdapter"
commandBuilderClass="Npgsql.NpgsqlCommandBuilder"
usePositionalParameters="false"
useParameterPrefixInSql="true"
useParameterPrefixInParameter="true"
parameterPrefix=":"
allowMARS="true"
/>
<provider
name="iDb2.10"
description="IBM DB2 Provider, V 10.0"
enabled="false"
assemblyName="IBM.Data.DB2.iSeries, Version=10.0.0.0,Culture=neutral, PublicKeyToken=9cdb2ebfb1f93a26, Custom=null" connectionClass="IBM.Data.DB2.iSeries.iDB2Connection"
commandClass="IBM.Data.DB2.iSeries.iDB2Command"
parameterClass="IBM.Data.DB2.iSeries.iDB2Parameter"
parameterDbTypeClass="IBM.Data.DB2.iSeries.iDB2DbType"
parameterDbTypeProperty="iDB2DbType"
dataAdapterClass="IBM.Data.DB2.iSeries.iDB2DataAdapter"
commandBuilderClass="IBM.Data.DB2.iSeries.iDB2CommandBuilder"
usePositionalParameters="true"
useParameterPrefixInSql="false"
useParameterPrefixInParameter="false"
parameterPrefix=""
allowMARS="false"
/>
<provider
name="Informix"
description="Informix NET Provider, 2.81.0.0"
enabled="false"
assemblyName="IBM.Data.Informix, Version=2.81.0.0, Culture=neutral, PublicKeyToken=7c307b91aa13d208"
connectionClass="IBM.Data.Informix.IfxConnection"
commandClass="IBM.Data.Informix.IfxCommand"
parameterClass="IBM.Data.Informix.IfxParameter"
parameterDbTypeClass="IBM.Data.Informix.IfxType"
parameterDbTypeProperty="IfxType"
dataAdapterClass="IBM.Data.Informix.IfxDataAdapter"
commandBuilderClass="IBM.Data.Informix.IfxCommandBuilder"
usePositionalParameters = "true"
useParameterPrefixInSql = "false"
useParameterPrefixInParameter = "false"
useDeriveParameters="false"
allowMARS="false"
/>
</providers>
2.SQLMap.config[文件名不可修改],配置连接数据库字符串与每个实体类(表)的映射文件配置,复制文件到网站的根目录,代码如下:
<?xml version="1.0" encoding="utf-8"?>
<sqlMapConfig
xmlns="http://ibatis.apache.org/dataMapper"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<settings>
<!--/是否使用Satement命名空间,这里的命名空间指的是映射文件中sqlMap节点的namespace属性,默认是false-->
<setting useStatementNamespaces="false"/>
<!--是否启用DataMapper的缓存机制,针对全部的SqlMap,默认是true-->
<setting cacheModelsEnabled="true"/>
<!--是否启用SqlMapConfig.xsd schema验证映射文件,默认是false-->
<setting validateSqlMap="false"/>
</settings>
<!--配置数据驱动提供类配置文件的路径和文件名-->
<providers resource="providers.config"/>
<!--如果在providers.config文件中指定了默认的数据库驱动,那么provider节点就不需要设置了,它的作用是在换数据库驱动时不需要修改providers.config文件。datasource节点用于指定ADO.NET Connection String.-->
<database>
<provider name="sqlServer2.0"/>
<dataSource name="mydb" connectionString="data source=127.0.0.1;database=Test;user id=sa;password=xxxxxx;"/>
</database>
<!--指定映射的文件的位置-->
<sqlMaps>
<sqlMap resource="Maps/RoleMap.xml"/>
<sqlMap resource="Maps/UserInfoMap.xml"/>
</sqlMaps>
</sqlMapConfig>
3.每个实体类(表)都有一个单独的配置文件类,类型为xml。实体类的配置文件格式如下,在网站的根目录创建一个Map的文件夹,新建xxxMap.xml格式的配置类,比如:UserInfoMap.xml、RoleMap.xml文件,示例代码如下:
<?xml version="1.0" encoding="utf-8" ?>
<!--namespace必须用否则会报错(读取配置文件报:未将对象引用设置到对象的实例)-->
<sqlMap namespace="" xmlns="http://ibatis.apache.org/mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<statements>
<select id="GetUserInfoById" parameterClass="string" resultClass="HashTable">
SELECT * FROM UserInfo WHERE ID=#ID#
</select>
<insert id="AddUserInfo" parameterClass="hashtable">
insert into UserInfo values(#Name#,#Age#,#Sex#,#Men#,#Remark#)
<selectKey resultClass="int" type="post" keyProperty="ID">
select @@IDENTITY as value
</selectKey>
</insert>
<delete id="DeleteUserInfo" parameterClass="int" restultClass="int">
DELETE FROM dbo.UserInfo WHERE ID=#ID#
</delete>
<update id="UpdateUserInfo" parameterClass="hashtable" restltClass="int">
update UserInfo set Name=#Name#,Age=#Age#,Sex=#Sex#,Men=#Men#,Remark=#Remark# where ID=#ID#
</update>
<select id="GetAllUserInfo" resultClass="HashTable">
SELECT * FROM UserInfo
</select>
</statements>
</sqlMap>
<?xml version="1.0" encoding="utf-8" ?>
<!--namespace必须用否则会报错(读取配置文件报:未将对象引用设置到对象的实例)-->
<sqlMap namespace="" xmlns="http://ibatis.apache.org/mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<statements>
<select id="GetRoleById" parameterClass="string" resultClass="HashTable">
SELECT * FROM Role WHERE ID=#ID#
</select>
<insert id="AddRole" parameterClass="hashtable">
insert into Role values(#Uid#,#RoleName#,#Remark#)
<selectKey resultClass="int" type="post" keyProperty="ID">
select @@IDENTITY as value
</selectKey>
</insert>
<delete id="DeleteRole" parameterClass="int" restultClass="int">
DELETE FROM dbo.Role WHERE ID=#ID#
</delete>
<update id="UpdateRole" parameterClass="hashtable" restltClass="int">
update Role set Uid=#Uid#,RoleName=#RoleName#,Remark=#Remark# where ID=#ID#
</update>
<select id="GetAllRole" resultClass="HashTable">
SELECT * FROM Role
</select>
</statements>
</sqlMap>
4.加入一个DB辅助类IBatisHepler.cs,代码如下:
public class IBatisHepler
{
private static ISqlMapper mapper = null;
static IBatisHepler()
{
DomSqlMapBuilder builder = new DomSqlMapBuilder();//其作用是根据配置文件创建SqlMap实例。
mapper = builder.Configure("SQLMap.config") as SqlMapper;//SqlMapper是iBatisNet的核心组件,提供数据库操作的基础平台。SqlMapper可通过DomSqlMapBuilder创建。
}
/// <summary>
/// 执行添加操作
/// </summary>
/// <param name="tag">语句ID</param>
/// <param name="paramObject">语句所需要的参数</param>
/// <returns>添加的主键</returns>
public static object ExcuteInsert(string tag, Hashtable paramObject)
{
return mapper.Insert(tag, paramObject);
}
/// <summary>
/// 执行删除操作
/// </summary>
/// <param name="tag">语句ID</param>
/// <param name="paramObject">语句所需要的参数</param>
/// <returns>影响行数</returns>
public static int ExcuteDelete(string tag, object paramObject)
{
return mapper.Delete(tag, paramObject);
}
/// <summary>
/// 执行修改操作
/// </summary>
/// <param name="tag">语句ID</param>
/// <param name="paramObject">语句所需要的参数</param>
/// <returns>影响行数</returns>
public static int ExcuteUpdate(string tag, Hashtable paramObject)
{
return mapper.Update(tag, paramObject);
}
/// <summary>
/// 查询单个实体对象
/// </summary>
/// <param name="tag">语句ID</param>
/// <param name="paramObject">语句所需要的参数</param>
/// <returns>得到的Object</returns>
public static object ExcuteSelectObj(string tag, object paramObject)
{
object obj = mapper.QueryForObject(tag, paramObject);
return obj;
}
/// <summary>
/// 分页查询
/// </summary>
/// <param name="tag">语句ID</param>
/// <param name="paramObject">语句所需要的参数</param>
/// <param name="pageIndex">页索引</param>
/// <param name="pageSize">每页显示的记录数</param>
/// <returns>得到的List集合</returns>
public static IList ExcuteSelect(string tag, object paramObject, int pageIndex, int pageSize)
{
return mapper.QueryForList(tag, paramObject, pageIndex, pageSize);
}
/// <summary>
/// 通用的以DataTable的方式得到Select的结果(xml文件中参数要使用$标记的占位参数)
/// </summary>
/// <param name="tag">语句ID</param>
/// <param name="paramObject">语句所需要的参数</param>
/// <returns>得到的DataTable</returns>
public static DataTable ExcuteSelect(string tag, object paramObject)
{
DataSet ds = new DataSet();
bool isSessionLocal = false;
ISqlMapSession session = mapper.LocalSession;
if (session == null)
{
session = mapper.CreateSqlMapSession();
session.OpenConnection();
isSessionLocal = true;
}
try
{
IDbCommand cmd = session.CreateCommand(CommandType.Text);
cmd.Connection = session.Connection;
cmd.CommandText = GetSql(tag, paramObject);
IDbDataAdapter adapter = session.CreateDataAdapter(cmd);
adapter.Fill(ds);
}
finally
{
if (isSessionLocal)
{
session.CloseConnection();
}
}
return ds.Tables[];
}
/// <summary>
/// 得到参数化后的SQL
/// </summary>
/// <param name="tag">语句ID</param>
/// <param name="paramObject">语句所需要的参数</param>
/// <returns>sql语句</returns>
protected static string GetSql(string tag, object paramObject)
{
IStatement statement = mapper.GetMappedStatement(tag).Statement;
IMappedStatement mapStatement = mapper.GetMappedStatement(tag);
ISqlMapSession session = mapper.CreateSqlMapSession();
RequestScope request = statement.Sql.GetRequestScope(mapStatement, paramObject, session);
return request.PreparedStatement.PreparedSql;
}
/// <summary>
/// 用于分页控件使用
/// </summary>
/// <param name="tag">语句ID</param>
/// <param name="paramObject">语句所需要的参数</param>
/// <param name="PageSize">每页显示数目</param>
/// <param name="curPage">当前页</param>
/// <param name="recCount">记录总数</param>
/// <returns>得到的DataTable</returns>
public static DataTable ExcuteSelect(string tag, object paramObject, int PageSize, int curPage, out int recCount)
{
IDataReader dr = null;
bool isSessionLocal = false;
string sql = GetSql(tag, paramObject);
string strCount = "select count(*) " + sql.Substring(sql.ToLower().IndexOf("from"));
IDalSession session = mapper.LocalSession;
DataTable dt = new DataTable();
if (session == null)
{
session = mapper.CreateSqlMapSession();
session.OpenConnection();
isSessionLocal = true;
}
try
{
IDbCommand cmdCount = session.CreateCommand(CommandType.Text);
cmdCount.Connection = session.Connection;
cmdCount.CommandText = strCount;
object count = cmdCount.ExecuteScalar();
recCount = Convert.ToInt32(count);
IDbCommand cmd = session.CreateCommand(CommandType.Text);
cmd.Connection = session.Connection;
cmd.CommandText = sql;
dr = cmd.ExecuteReader();
dt = Paging(dr, PageSize, curPage);
}
finally
{
if (isSessionLocal)
{
session.CloseConnection();
}
}
return dt;
} /**/
/// <summary>
/// 取回合适数量的数据
/// </summary>
/// <param name="dataReader"></param>
/// <param name="PageSize"></param>
/// <param name="curPage"></param>
/// <returns></returns>
protected static DataTable Paging(IDataReader dataReader, int PageSize, int curPage)
{
DataTable dt;
dt = new DataTable();
int colCount = dataReader.FieldCount;
for (int i = ; i < colCount; i++)
{
dt.Columns.Add(new DataColumn(dataReader.GetName(i), dataReader.GetFieldType(i)));
}
// 读取数据。将DataReader中的数据读取到DataTable中
object[] vald = new object[colCount];
int iCount = ; // 临时记录变量
while (dataReader.Read())
{
// 当前记录在当前页记录范围内
if (iCount >= PageSize * (curPage - ) && iCount < PageSize * curPage)
{
for (int i = ; i < colCount; i++)
vald[i] = dataReader.GetValue(i);
dt.Rows.Add(vald);
}
else if (iCount > PageSize * curPage)
{
break;
}
iCount++; // 临时记录变量递增
}
if (!dataReader.IsClosed)
{
dataReader.Close();
dataReader.Dispose();
}
return dt;
}
}
三、代码中实际使用,代码如下:
public ActionResult Index()
{
//1.新增
Hashtable ht_add = new Hashtable();
ht_add["Uid"] = ; //Key一定要与配置文件中的名称一致
ht_add["RoleName"] = "操作员";
ht_add["Remark"] = "iBatis操作员"; object obj = IBatisHepler.ExcuteInsert("AddRole", ht_add);
bool bl = Common.Tools.IsNumber(obj.ToString()); ViewBag.Status = bl; //2.查询
object obj2 = IBatisHepler.ExcuteSelectObj("GetRoleById", "");
Hashtable hs = obj2 as Hashtable; //3.删除
int num = IBatisHepler.ExcuteDelete("DeleteRole", "");
ViewBag.Status = num > ? true : false; //4.修改
Hashtable ht_Up = new Hashtable();
ht_Up["ID"] = ;
ht_Up["Uid"] = ;
ht_Up["RoleName"] = "操作员(修改)";
//ht_add["Remark"] = "iBatis操作员(修改)";
int num2 = IBatisHepler.ExcuteUpdate("UpdateRole", ht_Up);
ViewBag.Status = num2 > ? true : false; //5.查询所有
DataTable dt= IBatisHepler.ExcuteSelect("GetAllRole",""); return View();
}
就此,搞定!
其实iBatis引用固定的几个东西就可以直接是使用了,配置也不会有太多的修改,就是要修改database节点下的数据源和sqlMaps节点的映射文件,还是比较方便。
.NET 常用ORM之iBatis的更多相关文章
- ORM概述及常用ORM框架
一.ORM ORM(Object-relational mapping),即对象关系映射,是一种为了解决面向对象与关系数据库存在的互不匹配的现象的技术.也就是说,ORM是通过使用描述对象和数据库之间映 ...
- .NET 常用ORM之SubSonic
一.SubSonic简单介绍 SubSonic是一个类似Rails的开源.NET项目.你可以把它看作是一把瑞士军刀,它可以用来构建Website和通过ORM方式来访问数据.Rob Conery和Eri ...
- .NET 常用ORM之Gentle.Net
.Net常用的就是微软的EF框架和Nhibernate,这两个框架用的都比较多就不做详细介绍了,今天我们来看看Gentle.Net,Gentle.Net是一个开源的优秀O/R Mapping的对象持久 ...
- .Net 常用ORM框架对比:EF Core、FreeSql、SqlSuger
前言: 最近由于工作需要,需要选用一种ORM框架,也因此对EF Core.FreeSql.SqlSuger作简单对比.个人认为各有有优势,存在即合理,不然早就被淘汰了是吧,所以如何选择因人而议.因项目 ...
- .NET 常用ORM之NHibernate
NHibernate做.Net应该都不陌生,今天我们就算是温故下这个技术,概念性的东西就不说了,这次主要说本人在实际使用的遇到的问题,比较费解现在就当是记录下,避免以后再犯.本次主要使用的情况是1对N ...
- .NET 常用ORM之Nbear
NBear是一个基于.Net 2.0.C#2.0开放全部源代码的的软件开发框架类库.NBear的设计目标是尽最大努力减少开发人员的工作量,最大程度提升开发效率,同时兼顾性能及可伸缩性. 一.新建项目并 ...
- yii 常用orm
yii2 orwhere andwhere的复杂写法:https://www.codercto.com/a/6513.html $files = XXXX::find() ->andWhere( ...
- IBatis 2.x 和 MyBatis 3.0.x 的区别(从 iBatis 到 MyBatis)
从 iBatis 到 MyBatis,你准备好了吗? 对于从事 Java EE 的开发人员来说,iBatis 是一个再熟悉不过的持久层框架了,在 Hibernate.JPA 这样的一站式对象 / 关系 ...
- iBatis 和MyBatis区别
从 iBatis 到 MyBatis ,你准备好了吗? 对于从事 Java EE 的开发人员来说,iBatis 是一个再熟悉不过的持久层框架了,在 Hibernate.JPA 这样的一站式对象 ...
随机推荐
- 转场动画UINavigationControllerDelegate
从iOS7开始,苹果更新了自定义ViewController转场的API,这些新增的类和接口让很多人困惑,望而却步.本文就从这些API入口,让读者理清这些API错综复杂的关系. 几个protocol ...
- wechat-注意事项
- js中实现IE的打印预览
HTML中添加:<object id="WebBrowser" classid=CLSID:8856F961-340A-11D0-A96B-00C04FD705A2 widt ...
- JFrame绝对布局
通过代码:setLayout(null);设置容器布局为绝对布局. 添加控件要注意:一定要设置控件具体的位置.可通过代码setLocation(20, 20)或者setBounds(0, 0, 30, ...
- Elasticsearch5.x创建索引(Java)
索引创建代码使用官方给的示例代码,我把它在java项目里实现了一遍. 官方示例 1.创建索引 /** * Java创建Index */ public void CreateIndex() { int ...
- svn加锁设置
SVN 的锁定与解锁 简单的说,如果压根没有锁lock,那么每个人都拥有一个本地copy,每个人都能自由地对本地copy编辑edit并提交commit,这样可能会导致冲突conflict,最后不得不合 ...
- centos7挂载新加4T硬盘到/home目录
以下操作均在root环境下运行. 1.查看硬盘 # fdisk -l 发现硬盘为/dev/sdb 大小4T 2.如果此硬盘以前有过分区,则先对磁盘格式化: # mkfs -t ext4 /dev/sd ...
- cocos2dx JS 游戏切到后台再进入游戏的处理
由于Cocos引擎中,游戏切入后台后定时器后停掉会让某个Animation动作停止. 导致当重新进入游戏时,看到的不是你想要的画面.或者定时器倒计时的时间对不上等问题. cc.game.EVENT_H ...
- FCN的理解
FCN特点 1.卷积化 即是将普通的分类网络丢弃全连接层,换上对应的卷积层即可 2.上采样 方法是双线性上采样差 此处的上采样即是反卷积3.因为如果将全卷积之后的结果直接上采样得到的结果是很粗糙的,所 ...
- php开启pdo扩展
在Windows环境下php 5.1以上版本中,pdo和主要数据库的驱动同php一起作为扩展发布,要激活它们只需要简单地编辑php.ini文件. 打开php.ini配置文件,找到extension=p ...