using System;
using System.Collections;
using System.Data;
using System.Data.Common;
using System.Collections.Generic;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions; using WHC.Pager.Entity;
using WHC.Framework.Commons;
using Microsoft.Practices.EnterpriseLibrary.Data; namespace WHC.Framework.ControlUtil
{
/// <summary>
/// 定义一个记录操作日志的事件处理
/// </summary>
/// <param name="userId">操作的用户ID</param>
/// <param name="tableName">操作表名称</param>
/// <param name="operationType">操作类型：增加、修改、删除</param>
/// <param name="note">操作的详细记录信息</param>
/// <returns></returns>
public delegate bool OperationLogEventHandler(string userId, string tableName, string operationType, string note, DbTransaction trans = null); /// <summary>
/// 数据访问层的超级基类，所有数据库的数据访问基类都继承自这个超级基类，包括Oracle、SqlServer、Sqlite、MySql、Access等
/// </summary>
public abstract class AbstractBaseDAL<T> where T : BaseEntity, new()
{
#region 构造函数 protected string dbConfigName = ""; //数据库配置名称
protected string parameterPrefix = "@";//数据库参数化访问的占位符
protected string safeFieldFormat = "[{0}]";//防止和保留字、关键字同名的字段格式，如[value]
protected string tableName;//需要初始化的对象表名
protected string primaryKey;//数据库的主键字段名
protected string sortField;//排序字段
protected bool isDescending = true;//是否为降序
protected string selectedFields = " * ";//选择的字段，默认为所有(*)
public event OperationLogEventHandler OnOperationLog;//定义一个操作记录的事件处理 /// <summary>
/// 数据库配置名称，默认为空。
/// 可在子类指定不同的配置名称，用于访问不同的数据库
/// </summary>
public string DbConfigName
{
get { return dbConfigName; }
set { dbConfigName = value; }
} /// <summary>
/// 数据库参数化访问的占位符
/// </summary>
public string ParameterPrefix
{
get { return parameterPrefix; }
set { parameterPrefix = value; }
} /// <summary>
/// 防止和保留字、关键字同名的字段格式，如[value]。
/// 不同数据库类型的BaseDAL需要进行修改
/// </summary>
public string SafeFieldFormat
{
get { return safeFieldFormat; }
set { safeFieldFormat = value; }
} /// <summary>
/// 排序字段
/// </summary>
public string SortField
{
get
{
return sortField;
}
set
{
sortField = value;
}
} /// <summary>
/// 是否为降序
/// </summary>
public bool IsDescending
{
get { return isDescending; }
set { isDescending = value; }
} /// <summary>
/// 选择的字段，默认为所有(*)
/// </summary>
public string SelectedFields
{
get { return selectedFields; }
set { selectedFields = value; }
} /// <summary>
/// 数据库访问对象的表名
/// </summary>
public string TableName
{
get
{
return tableName;
}
} /// <summary>
/// 数据库访问对象的外键约束
/// </summary>
public string PrimaryKey
{
get
{
return primaryKey;
}
} /// <summary>
/// 默认构造函数
/// </summary>
public AbstractBaseDAL()
{
} /// <summary>
/// 指定表名以及主键,对基类进构造
/// </summary>
/// <param name="tableName">表名</param>
/// <param name="primaryKey">表主键</param>
public AbstractBaseDAL(string tableName, string primaryKey) : this()
{
this.tableName = tableName;
this.primaryKey = primaryKey;
this.sortField = primaryKey;//默认为主键排序
} /// <summary>
/// 设置数据库配置项名称
/// </summary>
/// <param name="dbConfigName">数据库配置项名称</param>
public virtual void SetDbConfigName(string dbConfigName)
{
this.dbConfigName = dbConfigName;
} /// <summary>
/// 根据配置数据库配置名称生成Database对象
/// </summary>
/// <returns></returns>
protected virtual Database CreateDatabase()
{
Database db = null;
if (string.IsNullOrEmpty(dbConfigName))
{
db = DatabaseFactory.CreateDatabase();
}
else
{
db = DatabaseFactory.CreateDatabase(dbConfigName);
}
return db;
} /// <summary>
/// 获取指定字符串中的子项的值
/// </summary>
/// <param name="connectionString">字符串值</param>
/// <param name="subKeyName">以分号(;)为分隔符的子项名称</param>
/// <returns>对应子项名称的值（即是=号后面的值）</returns>
protected string GetSubValue(string connectionString, string subKeyName)
{
string[] item = connectionString.Split(new char[] { ';' });
for (int i = ; i < item.Length; i++)
{
string itemValue = item[i].ToLower();
if (itemValue.IndexOf(subKeyName, StringComparison.OrdinalIgnoreCase) >= ) //如果含有指定的关键字
{
int startIndex = item[i].IndexOf("="); //等号开始的位置
return item[i].Substring(startIndex + ).Trim(); //获取等号后面的值即为Value
}
}
return string.Empty;
} /// <summary>
/// 生成防止和保留字、关键字同名的字段格式，如[value]。
/// </summary>
/// <param name="fieldName">字段名，如value</param>
protected string GetSafeFileName(string fieldName)
{
return string.Format(safeFieldFormat, fieldName);
} #endregion #region 通用操作方法 /// <summary>
/// 添加记录
/// </summary>
/// <param name="recordField">Hashtable:键[key]为字段名;值[value]为字段对应的值</param>
/// <param name="trans">事务对象,如果使用事务,传入事务对象,否则为Null不使用事务</param>
public virtual bool Insert(Hashtable recordField, DbTransaction trans)
{
return this.Insert(recordField, tableName, trans);
} /// <summary>
/// 添加记录
/// </summary>
/// <param name="recordField">Hashtable:键[key]为字段名;值[value]为字段对应的值</param>
/// <param name="targetTable">需要操作的目标表名称</param>
/// <param name="trans">事务对象,如果使用事务,传入事务对象,否则为Null不使用事务</param>
public virtual bool Insert(Hashtable recordField, string targetTable, DbTransaction trans)
{
bool result = false;
if (recordField == null || recordField.Count < )
{
return result;
} string fields = ""; // 字段名
string vals = ""; // 字段值
foreach (string field in recordField.Keys)
{
fields += string.Format("{0},", GetSafeFileName(field));
vals += string.Format("{0}{1},", parameterPrefix, field);
}
fields = fields.Trim(',');//除去前后的逗号
vals = vals.Trim(',');//除去前后的逗号
string sql = string.Format("INSERT INTO {0} ({1}) VALUES ({2})", targetTable, fields, vals); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
foreach (string field in recordField.Keys)
{
object val = recordField[field];
val = val ?? DBNull.Value;
if (val is DateTime)
{
if (Convert.ToDateTime(val) <= Convert.ToDateTime("1753-1-1"))
{
val = DBNull.Value;
}
} db.AddInParameter(command, field, TypeToDbType(val.GetType()), val);
} if (trans != null)
{
result = db.ExecuteNonQuery(command, trans) > ;
}
else
{
result = db.ExecuteNonQuery(command) > ;
} return result;
} /// <summary>
/// 添加记录
/// </summary>
/// <param name="recordField">Hashtable:键[key]为字段名;值[value]为字段对应的值</param>
/// <param name="trans">事务对象,如果使用事务,传入事务对象,否则为Null不使用事务</param>
public virtual int Insert2(Hashtable recordField, DbTransaction trans)
{
return this.Insert2(recordField, tableName, trans);
} /// <summary>
/// 添加记录
/// </summary>
/// <param name="recordField">Hashtable:键[key]为字段名;值[value]为字段对应的值</param>
/// <param name="targetTable">需要操作的目标表名称</param>
/// <param name="trans">事务对象,如果使用事务,传入事务对象,否则为Null不使用事务</param>
public virtual int Insert2(Hashtable recordField, string targetTable, DbTransaction trans)
{
throw new NotSupportedException();
} /// <summary>
/// 更新某个表一条记录(只适用于用单键,用int类型作键值的表)
/// </summary>
/// <param name="id">ID值</param>
/// <param name="recordField">Hashtable:键[key]为字段名;值[value]为字段对应的值</param>
/// <param name="trans">事务对象,如果使用事务,传入事务对象,否则为Null不使用事务</param>
public virtual bool Update(object id, Hashtable recordField, DbTransaction trans)
{
return this.PrivateUpdate(id, recordField, tableName, trans);
} /// <summary>
/// 更新某个表一条记录(只适用于用单键,用int类型作键值的表)
/// </summary>
/// <param name="id">ID值</param>
/// <param name="recordField">Hashtable:键[key]为字段名;值[value]为字段对应的值</param>
/// <param name="targetTable">需要操作的目标表名称</param>
/// <param name="trans">事务对象,如果使用事务,传入事务对象,否则为Null不使用事务</param>
public virtual bool Update(object id, Hashtable recordField, string targetTable, DbTransaction trans)
{
return PrivateUpdate(id, recordField, targetTable, trans);
} /// <summary>
/// 更新某个表一条记录
/// </summary>
/// <param name="id">ID值</param>
/// <param name="recordField">Hashtable:键[key]为字段名;值[value]为字段对应的值</param>
/// <param name="targetTable">需要操作的目标表名称</param>
/// <param name="trans">事务对象,如果使用事务,传入事务对象,否则为Null不使用事务</param>
public virtual bool PrivateUpdate(object id, Hashtable recordField, string targetTable, DbTransaction trans)
{
try
{
if (recordField == null || recordField.Count < )
{
return false;
} string setValue = "";
foreach (string field in recordField.Keys)
{
setValue += string.Format("{0} = {1}{2},", GetSafeFileName(field), parameterPrefix, field);
}
string sql = string.Format("UPDATE {0} SET {1} WHERE {2} = {3}{2} ",
targetTable, setValue.Substring(, setValue.Length - ), primaryKey, parameterPrefix);
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql); bool foundID = false;
foreach (string field in recordField.Keys)
{
object val = recordField[field];
val = val ?? DBNull.Value;
if (val is DateTime)
{
if (Convert.ToDateTime(val) <= Convert.ToDateTime("1753-1-1"))
{
val = DBNull.Value;
}
db.AddInParameter(command, field, DbType.DateTime, val);
}
else
{
db.AddInParameter(command, field, TypeToDbType(val.GetType()), val);
} if (field.Equals(primaryKey, StringComparison.OrdinalIgnoreCase))
{
foundID = true;
}
} if (!foundID)
{
db.AddInParameter(command, primaryKey, TypeToDbType(id.GetType()), id);
} bool result = false;
if (trans != null)
{
result = db.ExecuteNonQuery(command, trans) > ;
}
else
{
result = db.ExecuteNonQuery(command) > ;
} return result;
}
catch (Exception ex)
{
LogTextHelper.WriteLine(ex.ToString());
throw;
}
} /// <summary>
/// 执行SQL查询语句，返回查询结果的所有记录的第一个字段,用逗号分隔。
/// </summary>
/// <param name="sql">SQL语句</param>
/// <param name="trans">事务对象</param>
/// <returns>
/// 返回查询结果的所有记录的第一个字段,用逗号分隔。
/// </returns>
public virtual string SqlValueList(string sql, DbTransaction trans = null)
{
StringBuilder result = new StringBuilder();
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql); if (trans != null)
{
using (IDataReader dr = db.ExecuteReader(command, trans))
{
while (dr.Read())
{
result.AppendFormat("{0},", dr[].ToString());
}
}
}
else
{
using (IDataReader dr = db.ExecuteReader(command))
{
while (dr.Read())
{
result.AppendFormat("{0},", dr[].ToString());
}
}
}
string strResult = result.ToString().Trim(',');
return strResult;
} /// <summary>
/// 执行一些特殊的语句
/// </summary>
/// <param name="sql">SQL语句</param>
/// <param name="trans">事务对象</param>
public virtual int SqlExecute(string sql, DbTransaction trans = null)
{
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
if (trans != null)
{
return db.ExecuteNonQuery(command, trans);
}
else
{
return db.ExecuteNonQuery(command);
}
} /// <summary>
/// 执行存储过程函数。
/// </summary>
/// <param name="storeProcName">存储过程函数</param>
/// <param name="parameters">参数集合</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual int StoreProcExecute(string storeProcName, DbParameter[] parameters, DbTransaction trans = null)
{
Database db = CreateDatabase();
DbCommand command = db.GetStoredProcCommand(storeProcName);
foreach (DbParameter param in parameters)
{
db.AddInParameter(command, param.ParameterName, param.DbType, param.Value);
} int result = -;
if (trans != null)
{
result = db.ExecuteNonQuery(command, trans);
}
else
{
result = db.ExecuteNonQuery(command);
}
return result;
} /// <summary>
/// 执行SQL查询语句，返回所有记录的DataTable集合。
/// </summary>
/// <param name="sql">SQL查询语句</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual DataTable SqlTable(string sql, DbTransaction trans = null)
{
return SqlTable(sql, null, trans);
} /// <summary>
/// 执行SQL查询语句，返回所有记录的DataTable集合。
/// </summary>
/// <param name="sql">SQL查询语句</param>
/// <param name="parameters">参数集合</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual DataTable SqlTable(string sql, DbParameter[] parameters, DbTransaction trans = null)
{
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
if (parameters != null)
{
foreach (DbParameter param in parameters)
{
db.AddInParameter(command, param.ParameterName, param.DbType, param.Value);
}
}
DataTable dt = null;
if (trans != null)
{
dt = db.ExecuteDataSet(command, trans).Tables[];
}
else
{
dt = db.ExecuteDataSet(command).Tables[];
} if (dt != null)
{
dt.TableName = "tableName";//增加一个表名称，防止WCF方式因为TableName为空出错
} return dt;
} /// <summary>
/// 打开数据库连接，并创建事务对象
/// </summary>
public virtual DbTransaction CreateTransaction()
{
Database db = CreateDatabase();
DbConnection connection = db.CreateConnection();
if (connection.State == System.Data.ConnectionState.Closed)
{
connection.Open();
} return connection.BeginTransaction();
} /// <summary>
/// 打开数据库连接，并创建事务对象
/// </summary>
/// <param name="level">事务级别</param>
public virtual DbTransaction CreateTransaction(IsolationLevel level)
{
Database db = CreateDatabase();
DbConnection connection = db.CreateConnection();
if (connection.State == System.Data.ConnectionState.Closed)
{
connection.Open();
} return connection.BeginTransaction(level);
} /// <summary>
/// 测试数据库是否正常连接
/// </summary>
public virtual bool TestConnection(string connectionString)
{
throw new NotSupportedException();
} #endregion #region 对象添加、修改 /// <summary>
/// 插入指定对象到数据库中
/// </summary>
/// <param name="obj">指定的对象</param>
/// <param name="trans">事务对象</param>
/// <returns>执行成功返回true或false</returns>
public virtual bool Insert(T obj, DbTransaction trans = null)
{
ArgumentValidation.CheckForNullReference(obj, "传入的对象obj为空"); OperationLogOfInsert(obj, trans);//根据设置记录操作日志 Hashtable hash = GetHashByEntity(obj);
return Insert(hash, trans);
} /// <summary>
/// 插入指定对象到数据库中,并返回自增长的键值
/// </summary>
/// <param name="obj">指定的对象</param>
/// <param name="trans">事务对象</param>
/// <returns>执行成功返回True</returns>
public virtual int Insert2(T obj, DbTransaction trans = null)
{
ArgumentValidation.CheckForNullReference(obj, "传入的对象obj为空"); OperationLogOfInsert(obj, trans);//根据设置记录操作日志 Hashtable hash = GetHashByEntity(obj);
return Insert2(hash, trans);
} /// <summary>
/// 更新对象属性到数据库中
/// </summary>
/// <param name="obj">指定的对象</param>
/// <param name="primaryKeyValue">主键的值</param>
/// <param name="trans">事务对象</param>
/// <returns>执行成功返回<c>true</c>，否则为<c>false</c>。</returns>
public virtual bool Update(T obj, object primaryKeyValue, DbTransaction trans = null)
{
ArgumentValidation.CheckForNullReference(obj, "传入的对象obj为空"); OperationLogOfUpdate(obj, primaryKeyValue, trans);//根据设置记录操作日志 Hashtable hash = GetHashByEntity(obj);
return Update(primaryKeyValue, hash, trans);
} /// <summary>
/// 更新数据
/// </summary>
/// <param name="commandType">数据类型</param>
/// <param name="sql">sql</param>
/// <param name="trans">事务对象</param>
/// <returns>bool</returns>
public virtual bool Update(CommandType commandType, string sql, DbTransaction trans = null)
{
Database db = CreateDatabase();
if (trans != null)
{
return db.ExecuteNonQuery(trans, CommandType.Text, sql) > ;
}
else
{
return db.ExecuteNonQuery(CommandType.Text, sql) > ;
}
} /// <summary>
/// 插入或更新对象属性到数据库中
/// </summary>
/// <param name="obj">指定的对象</param>
/// <param name="primaryKeyValue">主键的值</param>
/// <param name="trans">事务对象</param>
/// <returns>执行成功返回<c>true</c>，否则为<c>false</c>。</returns>
public virtual bool InsertUpdate(T obj, object primaryKeyValue, DbTransaction trans = null)
{
bool result = Update(obj, primaryKey, trans);
if (!result)
{
result = Insert(obj, trans);
} return result;
} /// <summary>
/// 如果不存在记录，则插入对象属性到数据库中
/// </summary>
/// <param name="obj">指定的对象</param>
/// <param name="primaryKeyValue">主键的值</param>
/// <param name="trans">事务对象</param>
/// <returns>执行插入成功返回<c>true</c>，否则为<c>false</c>。</returns>
public virtual bool InsertIfNew(T obj, object primaryKeyValue, DbTransaction trans = null)
{
bool result = false;
string sql = string.Format("Update {0} set {1}={2}ID Where {1} = {2}ID", tableName, primaryKey, parameterPrefix);
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
db.AddInParameter(command, "ID", TypeToDbType(primaryKeyValue.GetType()), primaryKeyValue); int count = db.ExecuteNonQuery(command, trans);
if (count <= )
{
result = Insert(obj, trans);
}
return result;
} #endregion #region 返回实体类操作 /// <summary>
/// 查询数据库,检查是否存在指定ID的对象
/// </summary>
/// <param name="key">对象的ID值</param>
/// <param name="trans">事务对象</param>
/// <returns>存在则返回指定的对象,否则返回Null</returns>
public virtual T FindByID(object key, DbTransaction trans = null)
{
return PrivateFindByID(key, trans);
} /// <summary>
/// 提供对FindByID的私有方法实现
/// </summary>
/// <param name="key">主键的值</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
private T PrivateFindByID(object key, DbTransaction trans = null)
{
string sql = string.Format("Select {0} From {1} Where ({2} = {3}ID)", selectedFields, tableName, primaryKey, parameterPrefix); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
db.AddInParameter(command, "ID", TypeToDbType(key.GetType()), key); T entity = GetEntity(db, command, trans);
return entity;
} /// <summary>
/// 封装通用获取实体对象的私有方法
/// </summary>
/// <param name="db">Database对象</param>
/// <param name="command">DbCommand对象</param>
/// <param name="trans">事务对象，可为空</param>
/// <returns></returns>
protected T GetEntity(Database db, DbCommand command, DbTransaction trans = null)
{
T entity = null;
if (trans != null)
{
using (IDataReader dr = db.ExecuteReader(command, trans))
{
if (dr.Read())
{
entity = DataReaderToEntity(dr);
}
}
}
else
{
using (IDataReader dr = db.ExecuteReader(command))
{
if (dr.Read())
{
entity = DataReaderToEntity(dr);
}
}
}
return entity;
} /// <summary>
/// 根据条件查询数据库,如果存在返回第一个对象
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="trans">事务对象</param>
/// <returns>指定的对象</returns>
public virtual T FindSingle(string condition, DbTransaction trans = null)
{
return FindSingle(condition, null, null, trans);
} /// <summary>
/// 根据条件查询数据库,如果存在返回第一个对象
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="orderBy">自定义排序语句，如Order By Name Desc；如不指定，则使用默认排序</param>
/// <param name="trans">事务对象</param>
/// <returns>指定的对象</returns>
public virtual T FindSingle(string condition, string orderBy, DbTransaction trans = null)
{
return FindSingle(condition, orderBy, null, trans);
} /// <summary>
/// 根据条件查询数据库,如果存在返回第一个对象
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="orderBy">自定义排序语句，如Order By Name Desc；如不指定，则使用默认排序</param>
/// <param name="paramList">参数列表</param>
/// <param name="trans">事务对象</param>
/// <returns>指定的对象</returns>
public virtual T FindSingle(string condition, string orderBy, IDbDataParameter[] paramList, DbTransaction trans = null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
}
if (HasInjectionData(orderBy))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", orderBy));
throw new Exception("检测出SQL注入的恶意数据");
} string sql = string.Format("Select {0} From {1} ", selectedFields, tableName);
if (!string.IsNullOrEmpty(condition))
{
sql += string.Format("Where {0} ", condition);
}
if (!string.IsNullOrEmpty(orderBy))
{
sql += " " + orderBy;
}
else
{
sql += string.Format(" Order by {0} {1}", GetSafeFileName(sortField), isDescending ? "DESC" : "ASC");
} #region 获取单条记录
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
if (paramList != null)
{
command.Parameters.AddRange(paramList);
} T entity = GetEntity(db, command, trans);
return entity; #endregion
} /// <summary>
/// 查找记录表中最旧的一条记录
/// </summary>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual T FindFirst(DbTransaction trans = null)
{
throw new NotSupportedException();
} /// <summary>
/// 查找记录表中最新的一条记录
/// </summary>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual T FindLast(DbTransaction trans = null)
{
throw new NotSupportedException();
} #endregion #region 返回集合的接口 /// <summary>
/// 根据ID字符串(逗号分隔)获取对象列表
/// </summary>
/// <param name="idString">ID字符串(逗号分隔)</param>
/// <param name="trans">事务对象</param>
/// <returns>符合条件的对象列表</returns>
public virtual List<T> FindByIDs(string idString, DbTransaction trans = null)
{
string condition = string.Format("{0} in({1})", primaryKey, idString);
return this.Find(condition, trans);
} /// <summary>
/// 根据条件查询数据库,并返回对象集合
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> Find(string condition, DbTransaction trans = null)
{
return Find(condition, null, null, trans );
} /// <summary>
/// 根据条件查询数据库,并返回对象集合
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="orderBy">排序条件</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> Find(string condition, string orderBy, DbTransaction trans = null)
{
return Find(condition, orderBy, null, trans);
} /// <summary>
/// 根据条件查询数据库,并返回对象集合
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="orderBy">自定义排序语句，如Order By Name Desc；如不指定，则使用默认排序</param>
/// <param name="paramList">参数列表</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> Find(string condition, string orderBy, IDbDataParameter[] paramList, DbTransaction trans = null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
} //串连条件语句为一个完整的Sql语句
string sql = string.Format("Select {0} From {1} ", selectedFields, tableName);
if (!string.IsNullOrEmpty(condition))
{
sql += string.Format("Where {0}", condition);
}
if (!string.IsNullOrEmpty(orderBy))
{
sql += " " + orderBy;
}
else
{
sql += string.Format(" Order by {0} {1}", GetSafeFileName(sortField), isDescending ? "DESC" : "ASC");
} List<T> list = GetList(sql, paramList, trans);
return list;
} /// <summary>
/// 通用获取集合对象方法
/// </summary>
/// <param name="sql">查询的Sql语句</param>
/// <param name="paramList">参数列表，如果没有则为null</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual List<T> GetList(string sql, IDbDataParameter[] paramList = null, DbTransaction trans = null)
{
T entity = null;
List<T> list = new List<T>(); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
if (paramList != null)
{
command.Parameters.AddRange(paramList);
} if (trans != null)
{
using (IDataReader dr = db.ExecuteReader(command, trans))
{
while (dr.Read())
{
entity = DataReaderToEntity(dr); list.Add(entity);
}
}
}
else
{
using (IDataReader dr = db.ExecuteReader(command))
{
while (dr.Read())
{
entity = DataReaderToEntity(dr); list.Add(entity);
}
}
}
return list;
} /// <summary>
/// 以分页方式通用获取集合对象方法
/// </summary>
/// <param name="sql">查询的Sql语句</param>
/// <param name="info">分页实体</param>
/// <param name="paramList">参数列表，如果没有则为null</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual List<T> GetListWithPager(string sql, PagerInfo info, IDbDataParameter[] paramList = null, DbTransaction trans = null)
{
PagerHelper helper = new PagerHelper(sql, this.selectedFields, this.sortField,
info.PageSize, info.CurrenetPageIndex, this.isDescending, ""); string countSql = helper.GetPagingSql(true);
string strCount = SqlValueList(countSql);
info.RecordCount = Convert.ToInt32(strCount); string dataSql = helper.GetPagingSql(false);
List<T> list = GetList(dataSql, paramList, trans);
return list;
} /// <summary>
/// 根据条件查询数据库,并返回对象集合(用于分页数据显示)
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="info">分页实体</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> FindWithPager(string condition, PagerInfo info, DbTransaction trans = null)
{
return FindWithPager(condition, info, this.sortField, this.isDescending, trans);
} /// <summary>
/// 根据条件查询数据库,并返回对象集合(用于分页数据显示)
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="info">分页实体</param>
/// <param name="fieldToSort">排序字段</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> FindWithPager(string condition, PagerInfo info, string fieldToSort, DbTransaction trans = null)
{
return FindWithPager(condition, info, fieldToSort, this.isDescending, trans);
} /// <summary>
/// 根据条件查询数据库,并返回对象集合(用于分页数据显示)
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="info">分页实体</param>
/// <param name="fieldToSort">排序字段</param>
/// <param name="desc">是否降序</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> FindWithPager(string condition, PagerInfo info, string fieldToSort, bool desc, DbTransaction trans = null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
} PagerHelper helper = new PagerHelper(tableName, this.selectedFields, fieldToSort,
info.PageSize, info.CurrenetPageIndex, desc, condition); string countSql = helper.GetPagingSql(true);
string strCount = SqlValueList(countSql);
info.RecordCount = Convert.ToInt32(strCount); string dataSql = helper.GetPagingSql(false);
List<T> list = GetList(dataSql, null, trans);
return list;
} /// <summary>
/// 返回数据库所有的对象集合
/// </summary>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> GetAll(DbTransaction trans = null)
{
return GetAll("", trans);
} /// <summary>
/// 返回数据库所有的对象集合
/// </summary>
/// <param name="orderBy">自定义排序语句，如Order By Name Desc；如不指定，则使用默认排序</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> GetAll(string orderBy, DbTransaction trans = null)
{
if (HasInjectionData(orderBy))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", orderBy));
throw new Exception("检测出SQL注入的恶意数据");
} string sql = string.Format("Select {0} From {1} ", selectedFields, tableName);
if (!string.IsNullOrEmpty(orderBy))
{
sql += orderBy;
}
else
{
sql += string.Format(" Order by {0} {1}", GetSafeFileName(sortField), isDescending ? "DESC" : "ASC");
} List<T> list = GetList(sql, null);
return list;
} /// <summary>
/// 返回数据库所有的对象集合(用于分页数据显示)
/// </summary>
/// <param name="info">分页实体信息</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> GetAll(PagerInfo info, DbTransaction trans = null)
{
return FindWithPager("", info, this.sortField, this.isDescending, trans);
} /// <summary>
/// 返回数据库所有的对象集合(用于分页数据显示)
/// </summary>
/// <param name="info">分页实体信息</param>
/// <param name="fieldToSort">排序字段</param>
/// <param name="desc">是否降序</param>
/// <param name="trans">事务对象</param>
/// <returns>指定对象的集合</returns>
public virtual List<T> GetAll(PagerInfo info, string fieldToSort, bool desc, DbTransaction trans = null)
{
return FindWithPager("", info, fieldToSort, desc, trans);
} /// <summary>
/// 返回所有记录到DataTable集合中
/// </summary>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual DataTable GetAllToDataTable(DbTransaction trans = null)
{
return GetAllToDataTable("", trans);
} /// <summary>
/// 返回所有记录到DataTable集合中
/// </summary>
/// <param name="orderBy">自定义排序语句，如Order By Name Desc；如不指定，则使用默认排序</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual DataTable GetAllToDataTable(string orderBy, DbTransaction trans = null)
{
if (HasInjectionData(orderBy))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", orderBy));
throw new Exception("检测出SQL注入的恶意数据");
} string sql = string.Format("Select {0} From {1} ", selectedFields, tableName);
if (!string.IsNullOrEmpty(orderBy))
{
sql += orderBy;
}
else
{
sql += string.Format(" Order by {0} {1}", GetSafeFileName(sortField), isDescending ? "DESC" : "ASC");
} return GetDataTableBySql(sql, trans);
} /// <summary>
/// 根据分页条件，返回DataTable对象
/// </summary>
/// <param name="info">分页条件</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual DataTable GetAllToDataTable(PagerInfo info, DbTransaction trans = null)
{
return FindToDataTable("", info, this.sortField, this.isDescending, trans);
} /// <summary>
/// 根据分页条件，返回DataTable对象
/// </summary>
/// <param name="info">分页条件</param>
/// <param name="fieldToSort">排序字段</param>
/// <param name="desc">是否降序</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual DataTable GetAllToDataTable(PagerInfo info, string fieldToSort, bool desc, DbTransaction trans = null)
{
return FindToDataTable("", info, fieldToSort, desc, trans);
} /// <summary>
/// 根据查询条件，返回记录到DataTable集合中
/// </summary>
/// <param name="condition">查询条件</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual DataTable FindToDataTable(string condition, DbTransaction trans = null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
} //串连条件语句为一个完整的Sql语句
string sql = string.Format("Select {0} From {1} ", selectedFields, tableName);
if (!string.IsNullOrEmpty(condition))
{
sql += string.Format("Where {0}", condition);
}
sql += string.Format(" Order by {0} {1}", GetSafeFileName(sortField), isDescending ? "DESC" : "ASC"); return GetDataTableBySql(sql, trans);
} /// <summary>
/// 根据查询条件，返回记录到DataTable集合中
/// </summary>
/// <param name="condition">查询条件</param>
/// <param name="info">分页条件</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual DataTable FindToDataTable(string condition, PagerInfo info, DbTransaction trans = null)
{
return FindToDataTable(condition, info, this.sortField, this.isDescending, trans);
} /// <summary>
/// 根据条件查询数据库,并返回DataTable集合(用于分页数据显示)
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="info">分页实体</param>
/// <param name="fieldToSort">排序字段</param>
/// <param name="desc">是否降序</param>
/// <param name="trans">事务对象</param>
/// <returns>指定DataTable的集合</returns>
public virtual DataTable FindToDataTable(string condition, PagerInfo info, string fieldToSort, bool desc, DbTransaction trans = null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
} PagerHelper helper = new PagerHelper(tableName, this.selectedFields, fieldToSort,
info.PageSize, info.CurrenetPageIndex, desc, condition); string countSql = helper.GetPagingSql(true);
string strCount = SqlValueList(countSql, trans);
info.RecordCount = Convert.ToInt32(strCount); string dataSql = helper.GetPagingSql(false);
return GetDataTableBySql(dataSql, trans);
} /// <summary>
/// 操根据条件返回DataTable记录辅助类
/// </summary>
/// <param name="sql"></param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
protected DataTable GetDataTableBySql(string sql, DbTransaction trans = null)
{
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql); DataTable dt = null;
if (trans != null)
{
dt = db.ExecuteDataSet(command, trans).Tables[];
}
else
{
dt = db.ExecuteDataSet(command).Tables[];
} if (dt != null)
{
dt.TableName = "tableName";//增加一个表名称，防止WCF方式因为TableName为空出错
}
return dt;
} /// <summary>
/// 获取某字段数据字典列表
/// </summary>
/// <param name="fieldName">字段名称</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual List<string> GetFieldList(string fieldName, DbTransaction trans = null)
{
return GetFieldListByCondition(fieldName, null, trans);
} /// <summary>
/// 根据条件，获取某字段数据字典列表
/// </summary>
/// <param name="fieldName">字段名称</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public List<string> GetFieldListByCondition(string fieldName, string condition, DbTransaction trans = null)
{
string safeFieldName = GetSafeFileName(fieldName);
string sql = string.Format("Select distinct {0} From {1} ", safeFieldName, tableName);
if(!string.IsNullOrEmpty(condition))
{
sql += string.Format(" Where {0} ", condition);
}
sql += string.Format(" order by {0}", safeFieldName); List<string> list = new List<string>();
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql); string number = string.Empty;
if (trans != null)
{
using (IDataReader dr = db.ExecuteReader(command, trans))
{
while (dr.Read())
{
number = dr[fieldName].ToString();
if (!string.IsNullOrEmpty(number))
{
list.Add(number);
}
}
}
}
else
{
using (IDataReader dr = db.ExecuteReader(command))
{
while (dr.Read())
{
number = dr[fieldName].ToString();
if (!string.IsNullOrEmpty(number))
{
list.Add(number);
}
}
}
}
return list;
} /// <summary>
/// 根据条件，从视图里面获取记录
/// </summary>
/// <param name="viewName">视图名称</param>
/// <param name="condition">查询条件</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public DataTable FindByView(string viewName, string condition, DbTransaction trans = null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
} //串连条件语句为一个完整的Sql语句
string sql = string.Format("Select * From {0} Where ", viewName);
sql += condition;
//sql += string.Format(" Order by {0} {1}", SortField, IsDescending ? "DESC" : "ASC"); return GetDataTableBySql(sql, trans);
} /// <summary>
/// 根据条件，从视图里面获取记录
/// </summary>
/// <param name="viewName">视图名称</param>
/// <param name="condition">查询条件</param>
/// <param name="sortField">排序字段</param>
/// <param name="isDescending">是否为降序</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public DataTable FindByView(string viewName, string condition, string sortField, bool isDescending, DbTransaction trans = null)
{
//串连条件语句为一个完整的Sql语句
string sql = string.Format("Select * From {0} Where ", viewName);
sql += condition;
sql += string.Format(" Order by {0} {1}", sortField, isDescending ? "DESC" : "ASC"); return GetDataTableBySql(sql, trans);
} /// <summary>
/// 获取前面记录指定数量的记录
/// </summary>
/// <param name="sql">查询语句</param>
/// <param name="count">指定数量</param>
/// <param name="orderBy">排序条件，例如order by id</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public abstract DataTable GetTopResult(string sql, int count, string orderBy, DbTransaction trans = null); /// <summary>
/// 根据条件，从视图里面获取记录
/// </summary>
/// <param name="viewName">视图名称</param>
/// <param name="condition">查询条件</param>
/// <param name="sortField">排序字段</param>
/// <param name="isDescending">是否为降序</param>
/// <param name="info">分页条件</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public DataTable FindByViewWithPager(string viewName, string condition, string sortField, bool isDescending, PagerInfo info, DbTransaction trans = null)
{
//从视图中获取数据
PagerHelper helper = new PagerHelper(viewName, "*", sortField,
info.PageSize, info.CurrenetPageIndex, isDescending, condition);
string countSql = helper.GetPagingSql(true);
string strCount = SqlValueList(countSql, trans);
info.RecordCount = Convert.ToInt32(strCount); string dataSql = helper.GetPagingSql(false);
return GetDataTableBySql(dataSql, trans);
} #endregion #region 子类必须实现的函数(用于更新或者插入) /// <summary>
/// 将DataReader的属性值转化为实体类的属性值，返回实体类
/// (提供了默认的反射机制获取信息，为了提高性能，建议重写该函数)
/// </summary>
/// <param name="dr">有效的DataReader对象</param>
/// <returns>实体类对象</returns>
protected virtual T DataReaderToEntity(IDataReader dr)
{
T obj = new T();
PropertyInfo[] pis = obj.GetType().GetProperties(); foreach (PropertyInfo pi in pis)
{
try
{
if (dr[pi.Name].ToString() != "")
{
pi.SetValue(obj, dr[pi.Name] ?? "", null);
}
}
catch { }
}
return obj;
} /// <summary>
/// 将实体对象的属性值转化为Hashtable对应的键值(用于插入或者更新操作)
/// (提供了默认的反射机制获取信息，为了提高性能，建议重写该函数)
/// </summary>
/// <param name="obj">有效的实体对象</param>
/// <returns>包含键值映射的Hashtable</returns>
protected virtual Hashtable GetHashByEntity(T obj)
{
Hashtable ht = new Hashtable();
PropertyInfo[] pis = obj.GetType().GetProperties();
for (int i = ; i < pis.Length; i++)
{
//if (pis[i].Name != PrimaryKey)
{
object objValue = pis[i].GetValue(obj, null);
objValue = (objValue == null) ? DBNull.Value : objValue; if (!ht.ContainsKey(pis[i].Name))
{
ht.Add(pis[i].Name, objValue); EntityTypeHash.Add(pis[i].Name, pis[i].GetType());
}
}
}
return ht;
} private Hashtable EntityTypeHash = new Hashtable(); #endregion #region IBaseDAL接口 /// <summary>
/// 获取表的所有记录数量
/// </summary>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual int GetRecordCount(DbTransaction trans = null)
{
string sql = string.Format("Select Count(*) from {0} ", tableName); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql); return GetExecuteScalarValue(db, command, trans);
} /// <summary>
/// 获取表的所有记录数量
/// </summary>
/// <param name="condition">查询条件</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual int GetRecordCount(string condition, DbTransaction trans = null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
} string sql = string.Format("Select Count(*) from {0} WHERE {1} ", tableName, condition); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql); return GetExecuteScalarValue(db, command, trans);
} /// <summary>
/// 获取单一的记录值
/// </summary>
/// <param name="db">Database对象</param>
/// <param name="command">DbCommand对象</param>
/// <param name="trans">DbTransaction对象，可为空</param>
/// <returns></returns>
protected int GetExecuteScalarValue(Database db, DbCommand command, DbTransaction trans = null)
{
int result = ;
object objResult = null;
if (trans != null)
{
objResult = db.ExecuteScalar(command, trans);
}
else
{
objResult = db.ExecuteScalar(command);
} if (objResult != null && objResult != DBNull.Value)
{
result = Convert.ToInt32(objResult);
}
return result;
} /// <summary>
/// 根据condition条件，判断是否存在记录
/// </summary>
/// <param name="condition">查询的条件</param>
/// <param name="trans">事务对象</param>
/// <returns>如果存在返回True，否则False</returns>
public virtual bool IsExistRecord(string condition, DbTransaction trans = null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
} string sql = string.Format("Select Count(*) from {0} WHERE {1} ", tableName, condition); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql); int result = GetExecuteScalarValue(db, command, trans);
return result > ;
} /// <summary>
/// 查询数据库,检查是否存在指定键值的对象
/// </summary>
/// <param name="recordTable">Hashtable:键[key]为字段名;值[value]为字段对应的值</param>
/// <param name="trans">事务对象</param>
/// <returns>存在则返回<c>true</c>，否则为<c>false</c>。</returns>
public virtual bool IsExistKey(Hashtable recordTable, DbTransaction trans = null)
{
string fields = "";// 字段名
foreach (string field in recordTable.Keys)
{
fields += string.Format(" {0} = {1}{2} AND", GetSafeFileName(field), parameterPrefix, field);
}
fields = fields.Substring(, fields.Length - );//除去最后的AND string sql = string.Format("SELECT COUNT(*) FROM {0} WHERE {1}", tableName, fields);
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
foreach (string field in recordTable.Keys)
{
object objValue = recordTable[field];
db.AddInParameter(command, field, TypeToDbType(objValue.GetType()), objValue);
} return GetExecuteScalarValue(db, command, trans) > ;
} /// <summary>
/// 查询数据库,检查是否存在指定键值的对象
/// </summary>
/// <param name="fieldName">指定的属性名</param>
/// <param name="key">指定的值</param>
/// <param name="trans">事务对象</param>
/// <returns>存在则返回<c>true</c>，否则为<c>false</c>。</returns>
public virtual bool IsExistKey(string fieldName, object key, DbTransaction trans = null)
{
Hashtable table = new Hashtable();
table.Add(fieldName, key); return IsExistKey(table, trans);
} /// <summary>
/// 获取数据库中该对象的最大ID值
/// </summary>
/// <param name="trans">事务对象</param>
/// <returns>最大ID值</returns>
public virtual int GetMaxID(DbTransaction trans = null)
{
string sql = string.Format("SELECT MAX({0}) AS MaxID FROM {1}", primaryKey, tableName); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql); object obj = null;
if (trans != null)
{
obj = db.ExecuteScalar(command, trans);
}
else
{
obj = db.ExecuteScalar(command);
}
if(Convert.IsDBNull(obj))
{
return ;//没有记录的时候为0
}
return Convert.ToInt32(obj);
} /// <summary>
/// 根据主键和字段名称，获取对应字段的内容
/// </summary>
/// <param name="key">指定对象的ID</param>
/// <param name="fieldName">字段名称</param>
/// <param name="trans">事务对象</param>
/// <returns></returns>
public virtual string GetFieldValue(object key, string fieldName, DbTransaction trans = null)
{
string condition = string.Format("{0} = {1}{0}", primaryKey, parameterPrefix);
string sql = string.Format("Select {0} FROM {1} WHERE {2} ", fieldName, tableName, condition); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
db.AddInParameter(command, primaryKey, TypeToDbType(key.GetType()), key); object obj;
if (trans != null)
{
obj = db.ExecuteScalar(command, trans);
}
else
{
obj = db.ExecuteScalar(command);
} string result = "";
if (obj != null && obj != DBNull.Value)
{
result = obj.ToString();
} return result;
} /// <summary>
/// 根据指定对象的ID,从数据库中删除指定对象
/// </summary>
/// <param name="key">指定对象的ID</param>
/// <param name="trans">事务对象</param>
/// <returns>执行成功返回<c>true</c>，否则为<c>false</c>。</returns>
public virtual bool Delete(object key, DbTransaction trans = null)
{
OperationLogOfDelete(key, null, trans); //根据设置记录操作日志 string condition = string.Format("{0} = {1}{0}", primaryKey, parameterPrefix);
string sql = string.Format("DELETE FROM {0} WHERE {1} ", tableName, condition); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
db.AddInParameter(command, primaryKey, TypeToDbType(key.GetType()), key); bool result = false;
if (trans != null)
{
result = db.ExecuteNonQuery(command, trans) > ;
}
else
{
result = db.ExecuteNonQuery(command) > ;
}
return result;
} /// <summary>
/// 根据指定对象的ID和用户ID,从数据库中删除指定对象(用于记录人员的操作日志）
/// </summary>
/// <param name="key">指定对象的ID</param>
/// <param name="userId">用户ID</param>
/// <param name="trans">事务对象</param>
/// <returns>执行成功返回<c>true</c>，否则为<c>false</c>。</returns>
public virtual bool DeleteByUser(object key, string userId, DbTransaction trans = null)
{
OperationLogOfDelete(key, userId, trans); //根据设置记录操作日志 string condition = string.Format("{0} = {1}{0}", primaryKey, parameterPrefix);
string sql = string.Format("DELETE FROM {0} WHERE {1} ", tableName, condition); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
db.AddInParameter(command, primaryKey, TypeToDbType(key.GetType()), key); bool result = false;
if (trans != null)
{
result = db.ExecuteNonQuery(command, trans) > ;
}
else
{
result = db.ExecuteNonQuery(command) > ;
} return result;
} /// <summary>
/// 根据指定条件,从数据库中删除指定对象
/// </summary>
/// <param name="condition">删除记录的条件语句</param>
/// <param name="trans">事务对象</param>
/// <param name="paramList">Sql参数列表</param>
/// <param name="trans">事务对象</param>
/// <returns>执行成功返回<c>true</c>，否则为<c>false</c>。</returns>
public virtual bool DeleteByCondition(string condition, DbTransaction trans=null, IDbDataParameter[] paramList=null)
{
if (HasInjectionData(condition))
{
LogTextHelper.Error(string.Format("检测出SQL注入的恶意数据, {0}", condition));
throw new Exception("检测出SQL注入的恶意数据");
} string sql = string.Format("DELETE FROM {0} WHERE {1} ", tableName, condition); Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
if(paramList != null)
{
command.Parameters.AddRange(paramList);
} bool result = false;
if (trans != null)
{
result = db.ExecuteNonQuery(command, trans) > ;
}
else
{
result = db.ExecuteNonQuery(command) > ;
} return result;
} #endregion #region 用户操作记录的实现
/// <summary>
/// 插入操作的日志记录
/// </summary>
/// <param name="obj">数据对象</param>
/// <param name="trans">事务对象</param>
protected virtual void OperationLogOfInsert(T obj, DbTransaction trans = null)
{
if (OnOperationLog != null)
{
string operationType = "增加";
string userId = obj.CurrentLoginUserId; Hashtable recordField = GetHashByEntity(obj);
Dictionary<string, string> dictColumnNameAlias = GetColumnNameAlias(); StringBuilder sb = new StringBuilder();
foreach (string field in recordField.Keys)
{
string columnAlias = field;
bool result = dictColumnNameAlias.TryGetValue(field, out columnAlias);
if (result && !string.IsNullOrEmpty(columnAlias))
{
columnAlias = string.Format("({0})", columnAlias);//增加一个括号显示
} sb.AppendLine(string.Format("{0}{1}:{2}", field, columnAlias, recordField[field]));
sb.AppendLine();
}
sb.AppendLine();
string note = sb.ToString(); OnOperationLog(userId, this.tableName, operationType, note, trans);
}
} /// <summary>
/// 修改操作的日志记录
/// </summary>
/// <param name="id">记录ID</param>
/// <param name="obj">数据对象</param>
/// <param name="trans">事务对象</param>
protected virtual void OperationLogOfUpdate(T obj, object id, DbTransaction trans = null)
{
if (OnOperationLog != null)
{
string operationType = "修改";
string userId = obj.CurrentLoginUserId; Hashtable recordField = GetHashByEntity(obj);
Dictionary<string, string> dictColumnNameAlias = GetColumnNameAlias(); T objInDb = FindByID(id, trans);
if (objInDb != null)
{
Hashtable dbrecordField = GetHashByEntity(objInDb);//把数据库里的实体对象数据转换为哈希表 StringBuilder sb = new StringBuilder();
foreach (string field in recordField.Keys)
{
string newValue = recordField[field].ToString();
string oldValue = dbrecordField[field].ToString();
if (newValue != oldValue)//只记录变化的内容
{
string columnAlias = "";
bool result = dictColumnNameAlias.TryGetValue(field, out columnAlias);
if (result && !string.IsNullOrEmpty(columnAlias))
{
columnAlias = string.Format("({0})", columnAlias);//增加一个括号显示
} sb.AppendLine(string.Format("{0}{1}:", field, columnAlias));
sb.AppendLine(string.Format("\t {0} -> {1}", dbrecordField[field], recordField[field]));
sb.AppendLine();
}
}
sb.AppendLine();
string note = sb.ToString(); OnOperationLog(userId, this.tableName, operationType, note, trans);
}
}
} /// <summary>
/// 删除操作的日志记录
/// </summary>
/// <param name="id">记录ID</param>
/// <param name="userId">用户ID</param>
/// <param name="trans">事务对象</param>
protected virtual void OperationLogOfDelete(object id, string userId, DbTransaction trans = null)
{
if (OnOperationLog != null)
{
string operationType = "删除"; Dictionary<string, string> dictColumnNameAlias = GetColumnNameAlias(); T objInDb = FindByID(id, trans);
if (objInDb != null)
{
Hashtable dbrecordField = GetHashByEntity(objInDb);//把数据库里的实体对象数据转换为哈希表 StringBuilder sb = new StringBuilder();
foreach (string field in dbrecordField.Keys)
{
string columnAlias = "";
bool result = dictColumnNameAlias.TryGetValue(field, out columnAlias);
if (result && !string.IsNullOrEmpty(columnAlias))
{
columnAlias = string.Format("({0})", columnAlias);//增加一个括号显示
} sb.AppendLine(string.Format("{0}{1}:", field, columnAlias));
sb.AppendLine(string.Format("\t {0}", dbrecordField[field]));
sb.AppendLine();
}
sb.AppendLine();
string note = sb.ToString(); OnOperationLog(userId, this.tableName, operationType, note, trans);
}
}
}
#endregion #region 辅助类方法 /// <summary>
/// 转换.NET的对象类型到数据库类型
/// </summary>
/// <param name="t">.NET的对象类型</param>
/// <returns></returns>
public virtual DbType TypeToDbType(Type t)
{
DbType dbt;
try
{
if (t.Name.ToLower() == "byte[]")
{
dbt = DbType.Binary;
}
else
{
dbt = (DbType)Enum.Parse(typeof(DbType), t.Name);
}
}
catch
{
dbt = DbType.String;
}
return dbt;
} /// <summary>
/// 初始化数据库表名
/// </summary>
/// <param name="tableName">数据库表名</param>
public virtual void InitTableName(string tableName)
{
this.tableName = tableName;
} /// <summary>
/// 验证是否存在注入代码(条件语句）
/// </summary>
/// <param name="inputData"></param>
public virtual bool HasInjectionData(string inputData)
{
if (string.IsNullOrEmpty(inputData))
return false; //里面定义恶意字符集合
//验证inputData是否包含恶意集合
if (Regex.IsMatch(inputData.ToLower(), GetRegexString()))
{
return true;
}
else
{
return false;
}
} /// <summary>
/// 获取正则表达式
/// </summary>
/// <returns></returns>
private string GetRegexString()
{
//构造SQL的注入关键字符
string[] strBadChar =
{
//"select\\s",
//"from\\s",
"insert\\s",
"delete\\s",
"update\\s",
"drop\\s",
"truncate\\s",
"exec\\s",
"count\\(",
"declare\\s",
"asc\\(",
"mid\\(",
"char\\(",
"net user",
"xp_cmdshell",
"/add\\s",
"exec master.dbo.xp_cmdshell",
"net localgroup administrators"
}; //构造正则表达式
string str_Regex = ".*(";
for (int i = ; i < strBadChar.Length - ; i++)
{
str_Regex += strBadChar[i] + "|";
}
str_Regex += strBadChar[strBadChar.Length - ] + ").*"; return str_Regex;
} /// <summary>
/// 获取数据库的全部表名称
/// </summary>
/// <returns></returns>
public virtual List<string> GetTableNames()
{
return new List<string>();
} /// <summary>
/// 获取表的字段名称和数据类型列表。
/// </summary>
/// <returns></returns>
public virtual DataTable GetFieldTypeList()
{
DataTable dt = DataTableHelper.CreateTable("ColumnName,DataType");
DataTable schemaTable = GetReaderSchema(tableName);
if (schemaTable != null)
{
foreach (DataRow dr in schemaTable.Rows)
{
string columnName = dr["ColumnName"].ToString().ToUpper();
string netType = dr["DataType"].ToString().ToLower(); DataRow row = dt.NewRow();
row["ColumnName"] = columnName;
row["DataType"] = netType; dt.Rows.Add(row);
}
} if (dt != null)
{
dt.TableName = "tableName";//增加一个表名称，防止WCF方式因为TableName为空出错
}
return dt;
} /// <summary>
/// 获取指定表的元数据，包括字段名称、类型等等
/// </summary>
/// <param name="tableName">数据库表名</param>
/// <returns></returns>
private DataTable GetReaderSchema(string tableName)
{
DataTable schemaTable = null; string sql = string.Format("Select * FROM {0}", tableName);
Database db = CreateDatabase();
DbCommand command = db.GetSqlStringCommand(sql);
try
{
using (IDataReader reader = db.ExecuteReader(command))
{
schemaTable = reader.GetSchemaTable();
}
}
catch (Exception ex)
{
LogTextHelper.Error(ex);
} return schemaTable;
} /// <summary>
/// 获取字段中文别名（用于界面显示）的字典集合
/// </summary>
/// <returns></returns>
public virtual Dictionary<string, string> GetColumnNameAlias()
{
return new Dictionary<string, string>();
} /// <summary>
/// 获取指定字段的报表数据
/// </summary>
/// <param name="fieldName">表字段</param>
/// <param name="condition">查询条件</param>
/// <returns></returns>
public virtual DataTable GetReportData(string fieldName, string condition)
{
string where = "";
if (!string.IsNullOrEmpty(condition))
{
where = string.Format("Where {0}", condition);
}
string sql = string.Format("select {0} as argument, count(*) as datavalue from {1} {2} group by {0} order by count(*) desc", fieldName, tableName, where); return SqlTable(sql);
} #endregion #region 存储过程执行通用方法 /// <summary>
/// 执行存储过程，如果影响记录数，返回True，否则为False，修改并输出外部参数outParameters（如果有）。
/// </summary>
/// <param name="storeProcName">存储过程名称</param>
/// <param name="inParameters">输入参数，可为空</param>
/// <param name="outParameters">输出参数，可为空</param>
/// <param name="trans">事务对象，可为空</param>
/// <returns>如果影响记录数，返回True，否则为False</returns>
public bool StorePorcExecute(string storeProcName, Hashtable inParameters = null, Hashtable outParameters = null, DbTransaction trans = null)
{
Database db = CreateDatabase();
DbCommand command = db.GetStoredProcCommand(storeProcName);
//参数传入
SetStoreParameters(db, command, inParameters, outParameters); //获取执行结果
bool result = false;
if (trans != null)
{
result = db.ExecuteNonQuery(command, trans) > ;
}
else
{
result = db.ExecuteNonQuery(command) > ;
} //获取输出参数的值
EditOutParameters(db, command, outParameters); return result;
} /// <summary>
/// 执行存储过程，返回实体列表集合，修改并输出外部参数outParameters（如果有）。
/// </summary>
/// <param name="storeProcName">存储过程名称</param>
/// <param name="inParameters">输入参数，可为空</param>
/// <param name="outParameters">输出参数，可为空</param>
/// <param name="trans">事务对象，可为空</param>
/// <returns>返回实体列表集合</returns>
public List<T> StorePorcToList(string storeProcName, Hashtable inParameters = null, Hashtable outParameters = null, DbTransaction trans = null)
{
Database db = CreateDatabase();
DbCommand command = db.GetStoredProcCommand(storeProcName);
//参数传入
SetStoreParameters(db, command, inParameters, outParameters); #region 获取执行结果 List<T> result = new List<T>();
T entity = null;
if (trans != null)
{
using (IDataReader dr = db.ExecuteReader(command, trans))
{
while (dr.Read())
{
entity = DataReaderToEntity(dr);
result.Add(entity);
}
}
}
else
{
using (IDataReader dr = db.ExecuteReader(command))
{
while (dr.Read())
{
entity = DataReaderToEntity(dr);
result.Add(entity);
}
}
}
#endregion //获取输出参数的值
EditOutParameters(db, command, outParameters); return result;
} /// <summary>
/// 执行存储过程，返回DataTable集合，修改并输出外部参数outParameters（如果有）。
/// </summary>
/// <param name="storeProcName">存储过程名称</param>
/// <param name="inParameters">输入参数，可为空</param>
/// <param name="outParameters">输出参数，可为空</param>
/// <param name="trans">事务对象，可为空</param>
/// <returns>返回DataTable集合</returns>
public DataTable StorePorcToDataTable(string storeProcName, Hashtable inParameters = null, Hashtable outParameters = null, DbTransaction trans = null)
{
Database db = CreateDatabase();
DbCommand command = db.GetStoredProcCommand(storeProcName);
//参数传入
SetStoreParameters(db, command, inParameters, outParameters); #region 获取执行结果 DataTable result = null;
if (trans != null)
{
result = db.ExecuteDataSet(command, trans).Tables[];
}
else
{
result = db.ExecuteDataSet(command).Tables[];
} if (result != null)
{
result.TableName = "tableName";//增加一个表名称，防止WCF方式因为TableName为空出错
}
#endregion //获取输出参数的值
EditOutParameters(db, command, outParameters); return result;
} /// <summary>
/// 执行存储过程，返回实体对象，修改并输出外部参数outParameters（如果有）。
/// </summary>
/// <param name="storeProcName">存储过程名称</param>
/// <param name="inParameters">输入参数，可为空</param>
/// <param name="outParameters">输出参数，可为空</param>
/// <param name="trans">事务对象，可为空</param>
/// <returns>返回实体对象</returns>
public T StorePorcToEntity(string storeProcName, Hashtable inParameters = null, Hashtable outParameters = null, DbTransaction trans = null)
{
Database db = CreateDatabase();
DbCommand command = db.GetStoredProcCommand(storeProcName); //参数传入
SetStoreParameters(db, command, inParameters, outParameters); #region 获取执行结果 T result = null;
if (trans != null)
{
using (IDataReader dr = db.ExecuteReader(command, trans))
{
if (dr.Read())
{
result = DataReaderToEntity(dr);
}
}
}
else
{
using (IDataReader dr = db.ExecuteReader(command))
{
if (dr.Read())
{
result = DataReaderToEntity(dr);
}
}
}
#endregion //获取输出参数的值
EditOutParameters(db, command, outParameters); return result;
} /// <summary>
/// 传入输入参数和输出参数到Database和DbCommand对象。
/// </summary>
/// <param name="db">Database对象</param>
/// <param name="command">DbCommand对象</param>
/// <param name="inParameters">输入参数的哈希表</param>
/// <param name="outParameters">输出参数的哈希表</param>
private void SetStoreParameters(Database db, DbCommand command, Hashtable inParameters = null, Hashtable outParameters = null)
{
#region 参数传入
//传入输入参数
if (inParameters != null)
{
foreach (string param in inParameters.Keys)
{
object value = inParameters[param];
db.AddInParameter(command, param, TypeToDbType(value.GetType()), value);
}
} //传入输出参数
if (outParameters != null)
{
foreach (string param in outParameters.Keys)
{
object value = outParameters[param];
db.AddOutParameter(command, param, TypeToDbType(value.GetType()), );//size统一设置为0
}
}
#endregion
}
/// <summary>
/// 执行存储过程后，获取需要输出的参数值，修改存储在哈希表里
/// </summary>
/// <param name="db">Database对象</param>
/// <param name="command">DbCommand对象</param>
/// <param name="outParameters">输出参数的哈希表</param>
private void EditOutParameters(Database db, DbCommand command, Hashtable outParameters = null)
{
#region 获取输出参数的值
if (outParameters != null)
{
ArrayList keys = new ArrayList(outParameters.Keys);//使用临时集合对象，避免迭代错误
foreach (string param in keys)
{
object retValue = db.GetParameterValue(command, param); object value = outParameters[param];
outParameters[param] = Convert.ChangeType(retValue, value.GetType());
}
}
#endregion
}
#endregion }
}