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MAction.cs
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using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.Common;
using System.Data.SqlClient;
using System.ComponentModel;
using CYQ.Data.SQL;
using CYQ.Data.Cache;
using CYQ.Data.Table;
using CYQ.Data.Aop;
using CYQ.Data.Tool;
using CYQ.Data.UI;
namespace CYQ.Data
{
/// <summary>
/// Manipulate：table / view / custom statement
///<para>操作：表/视图/自定义语句</para>
/// </summary>
public partial class MAction : IDisposable
{
#region 全局变量
internal DbBase dalHelper;//数据操作
private SqlCreate _sqlCreate;
private InsertOp _option = InsertOp.ID;
private NoSqlAction _noSqlAction = null;
private MDataRow _Data;//表示一行
/// <summary>
/// Archive the rows of the data structure
/// <para>存档数据结构的行</para>
/// </summary>
public MDataRow Data
{
get
{
return _Data;
}
}
/// <summary>
/// 原始传进来的表名/视图名，未经过[多数据库转换处理]格式化。
/// </summary>
private string _sourceTableName;
private string _TableName; //表名
/// <summary>
/// Table name (if the view statement is the operation, the final view of the name)
///<para>当前操作的表名(若操作的是视图语句，则为最后的视图名字</para> ）
/// </summary>
public string TableName
{
get
{
return _TableName;
}
set
{
_TableName = value;
}
}
/// <summary>
/// The database connection string
///<para>数据库链接字符串</para>
/// </summary>
public string ConnectionString
{
get
{
if (dalHelper != null)
{
return dalHelper.conn;
}
return string.Empty;
}
}
private string _debugInfo = string.Empty;
/// <summary>
/// Get or set debugging information [need to set App Config.Debug.Open DebugInfo to ture]
///<para>获取或设置调试信息[需要设置AppConfig.Debug.OpenDebugInfo为ture]</para>
/// </summary>
public string DebugInfo
{
get
{
if (dalHelper != null)
{
return dalHelper.debugInfo.ToString();
}
return _debugInfo;
}
set
{
if (dalHelper != null)
{
dalHelper.debugInfo.Length = 0;
dalHelper.debugInfo.Append(value);
}
}
}
/// <summary>
/// The database type
/// <para>数据库类型</para>
/// </summary>
public DalType DalType
{
get
{
return dalHelper.dalType;
}
}
/// <summary>
/// The database name
/// <para>数据库名称</para>
/// </summary>
public string DataBase
{
get
{
return dalHelper.DataBase;
}
}
/// <summary>
/// The database version
/// 数据库的版本号
/// </summary>
public string DalVersion
{
get
{
return dalHelper.Version;
}
}
/// <summary>
/// The number of rows affected when executing a SQL command (-2 is an exception)
/// <para>执行SQL命令时受影响的行数（-2则为异常）。</para>
/// </summary>
public int RecordsAffected
{
get
{
return dalHelper.recordsAffected;
}
}
/// <summary>
/// Command Timeout[seconds]
///<para>命令超时设置[单位秒]</para>
/// </summary>
public int TimeOut
{
get
{
if (dalHelper.Com != null)
{
return dalHelper.Com.CommandTimeout;
}
return -1;
}
set
{
if (dalHelper.Com != null)
{
dalHelper.Com.CommandTimeout = value;
}
}
}
private bool _AllowInsertID = false;
/// <summary>
/// Whether to allow manual insertion of IDs for self-incrementing primary key identification
///<para>自增主键标识的，是否允许手动插入ID</para>
/// </summary>
public bool AllowInsertID
{
get
{
return _AllowInsertID;
}
set
{
_AllowInsertID = value;
}
}
private bool _isInsertCommand; //是否执行插入命令(区分于Update命令)
private bool _setIdentityResult = true;
/// <summary>
/// MSSQL插入标识ID时开启此选项[事务开启时有效]
/// </summary>
internal void SetIdentityInsertOn()
{
_setIdentityResult = true;
if (dalHelper != null && dalHelper.isOpenTrans)
{
switch (dalHelper.dalType)
{
case DalType.MsSql:
case DalType.Sybase:
if (_Data.Columns.FirstPrimary.IsAutoIncrement)//数字型
{
try
{
string lastTable = Convert.ToString(CacheManage.LocalInstance.Get("MAction_IdentityInsertForSql"));
if (!string.IsNullOrEmpty(lastTable))
{
lastTable = "set identity_insert " + SqlFormat.Keyword(lastTable, dalHelper.dalType) + " off";
dalHelper.ExeNonQuery(lastTable, false);
}
_setIdentityResult = dalHelper.ExeNonQuery("set identity_insert " + SqlFormat.Keyword(_TableName, dalHelper.dalType) + " on", false) > -2;
if (_setIdentityResult)
{
CacheManage.LocalInstance.Set("MAction_IdentityInsertForSql", _TableName, 30);
}
}
catch
{
}
}
break;
}
}
_AllowInsertID = true;
}
/// <summary>
/// MSSQL插入标识ID后关闭此选项[事务开启时有效]
/// </summary>;
internal void SetIdentityInsertOff()
{
if (_setIdentityResult && dalHelper != null && dalHelper.isOpenTrans)
{
switch (dalHelper.dalType)
{
case DalType.MsSql:
case DalType.Sybase:
if (_Data.Columns.FirstPrimary.IsAutoIncrement)//数字型
{
try
{
if (dalHelper.ExeNonQuery("set identity_insert " + SqlFormat.Keyword(_TableName, DalType.MsSql) + " off", false) > -2)
{
_setIdentityResult = false;
CacheManage.LocalInstance.Remove("MAction_IdentityInsertForSql");
}
}
catch
{
}
}
break;
}
}
_AllowInsertID = false;
}
/// <summary>
/// 当DeleteField被设置后（删除转更新操作），如果仍想删除操作（可将此属性置为true）
/// </summary>
internal bool IsIgnoreDeleteField = false;
#endregion
#region 构造函数
/// <summary>
/// Instantiation
/// <para>实例化</para>
/// </summary>
/// <param name="tableNamesEnum">Parameters: table name, view, custom statement, DataRow
/// <para>参数：表名、视图、自定义语句、MDataRow</para></param>
public MAction(object tableNamesEnum)
{
Init(tableNamesEnum, AppConfig.DB.DefaultConn);
}
/// <param name="conn">Database connection statement or configuration key
/// <para>数据库链接语句或配置Key</para></param>
public MAction(object tableNamesEnum, string conn)
{
Init(tableNamesEnum, conn);
}
#endregion
#region 初始化
private void Init(object tableObj, string conn)
{
tableObj = SqlCreate.SqlToViewSql(tableObj);
string dbName = StaticTool.GetDbName(ref tableObj);
if (conn == AppConfig.DB.DefaultConn && !string.IsNullOrEmpty(dbName))
{
conn = dbName + "Conn";
}
MDataRow newRow;
InitConn(tableObj, conn, out newRow);//尝试从MDataRow提取新的Conn链接
InitSqlHelper(newRow, dbName);
InitRowSchema(newRow, true);
InitGlobalObject(true);
//Aop.IAop myAop = Aop.InterAop.Instance.GetFromConfig();//试图从配置文件加载自定义Aop
//if (myAop != null)
//{
// SetAop(myAop);
//}
}
private void InitConn(object tableObj, string conn, out MDataRow newRow)
{
if (tableObj is MDataRow)
{
newRow = tableObj as MDataRow;
}
else
{
newRow = new MDataRow();
newRow.TableName = SqlFormat.NotKeyword(tableObj.ToString());
}
if (!string.IsNullOrEmpty(conn))
{
newRow.Conn = conn;
}
_sourceTableName = newRow.TableName;
}
private void InitSqlHelper(MDataRow newRow, string newDbName)
{
if (dalHelper == null)// || newCreate
{
dalHelper = DalCreate.CreateDal(newRow.Conn);
//创建错误事件。
if (dalHelper.IsOnExceptionEventNull)
{
dalHelper.OnExceptionEvent += new DbBase.OnException(_DataSqlHelper_OnExceptionEvent);
}
}
else
{
dalHelper.ClearParameters();//oracle 11g(某用户的电脑上会出问题，切换表操作，参数未清）
}
if (!string.IsNullOrEmpty(newDbName))//需要切换数据库。
{
if (string.Compare(dalHelper.DataBase, newDbName, StringComparison.OrdinalIgnoreCase) != 0)//数据库名称不相同。
{
if (newRow.TableName.Contains(" "))//视图语句，则直接切换数据库链接。
{
dalHelper.ChangeDatabase(newDbName);
}
else
{
bool isWithDbName = newRow.TableName.Contains(".");//是否DBName.TableName
string fullTableName = isWithDbName ? newRow.TableName : newDbName + "." + newRow.TableName;
string sourceDbName = dalHelper.DataBase;
DbResetResult result = dalHelper.ChangeDatabaseWithCheck(fullTableName);
switch (result)
{
case DbResetResult.Yes://数据库切换了 (不需要前缀）
case DbResetResult.No_SaveDbName:
case DbResetResult.No_DBNoExists:
if (isWithDbName) //带有前缀的，取消前缀
{
_sourceTableName = newRow.TableName = SqlFormat.NotKeyword(fullTableName);
}
break;
case DbResetResult.No_Transationing:
if (!isWithDbName)//如果不同的数据库，需要带有数据库前缀
{
_sourceTableName = newRow.TableName = fullTableName;
}
break;
}
}
}
}
}
void _DataSqlHelper_OnExceptionEvent(string msg)
{
_aop.OnError(msg);
}
private static DateTime lastGCTime = DateTime.Now;
private void InitRowSchema(MDataRow row, bool resetState)
{
_Data = row;
_TableName = SqlCompatible.Format(_sourceTableName, dalHelper.dalType);
_TableName = DBTool.GetMapTableName(dalHelper.conn, _TableName);//处理数据库映射兼容。
if (_Data.Count == 0)
{
if (!TableSchema.FillTableSchema(ref _Data, ref dalHelper, _TableName, _sourceTableName))
{
if (!dalHelper.TestConn())
{
Error.Throw(dalHelper.dalType + "." + dalHelper.DataBase + ":open database failed! check the connectionstring is be ok!\r\nerror:" + dalHelper.debugInfo.ToString());
}
Error.Throw(dalHelper.dalType + "." + dalHelper.DataBase + ":check the tablename \"" + _TableName + "\" is exist?\r\nerror:" + dalHelper.debugInfo.ToString());
}
}
else if (resetState)
{
_Data.SetState(0);
}
_Data.Conn = row.Conn;//FillTableSchema会改变_Row的对象。
}
/// <summary>
/// Toggle Table Action: To switch between other tables, use this method
/// <para>切换表操作：如需操作其它表，通过此方法切换</para>
/// </summary>
/// <param name="tableObj">Parameters: table name, view, custom statement, DataRow
/// <para>参数：表名、视图、自定义语句、MDataRow</para></param>
public void ResetTable(object tableObj)
{
ResetTable(tableObj, true, null);
}
/// <param name="resetState">Reset Row State (defaultValue:true)
/// <para>是否重置原有的数据状态（默认true)</para></param>
public void ResetTable(object tableObj, bool resetState)
{
ResetTable(tableObj, resetState, null);
}
/// <param name="newDbName">Other DataBaseName
/// <para>其它数据库名称</para></param>
public void ResetTable(object tableObj, bool resetState, string newDbName)
{
tableObj = SqlCreate.SqlToViewSql(tableObj);
newDbName = newDbName ?? StaticTool.GetDbName(ref tableObj);
MDataRow newRow;
InitConn(tableObj, string.Empty, out newRow);
//newRow.Conn = newDbName;//除非指定链接，否则不切换数据库
InitSqlHelper(newRow, newDbName);
InitRowSchema(newRow, resetState);
InitGlobalObject(false);
}
private void InitGlobalObject(bool allowCreate)
{
if (_Data != null)
{
if (_sqlCreate == null)
{
_sqlCreate = new SqlCreate(this);
}
if (_UI != null)
{
_UI._Data = _Data;
}
else if (allowCreate)
{
_UI = new MActionUI(ref _Data, dalHelper, _sqlCreate);
}
if (_noSqlAction != null)
{
_noSqlAction.Reset(ref _Data, _TableName, dalHelper.Con.DataSource, dalHelper.dalType);
}
else if (allowCreate)
{
switch (dalHelper.dalType)
{
case DalType.Txt:
case DalType.Xml:
_noSqlAction = new NoSqlAction(ref _Data, _TableName, dalHelper.Con.DataSource, dalHelper.dalType);
break;
}
}
}
}
#endregion
#region 数据库操作方法
private bool InsertOrUpdate(string sqlCommandText)
{
bool returnResult = false;
if (_sqlCreate.isCanDo)
{
if (_isInsertCommand) //插入
{
_isInsertCommand = false;
object ID;
switch (dalHelper.dalType)
{
case DalType.MsSql:
case DalType.Sybase:
ID = dalHelper.ExeScalar(sqlCommandText, false);
if (ID == null && AllowInsertID && dalHelper.recordsAffected > -2)
{
ID = _Data.PrimaryCell.Value;
}
break;
default:
#region MyRegion
bool isTrans = dalHelper.isOpenTrans;
int groupID = DataType.GetGroup(_Data.PrimaryCell.Struct.SqlType);
bool isNum = groupID == 1 && _Data.PrimaryCell.Struct.Scale <= 0;
if (!isTrans && (isNum || _Data.PrimaryCell.Struct.IsAutoIncrement) && (!AllowInsertID || _Data.PrimaryCell.IsNullOrEmpty)) // 数字自增加
{
dalHelper.isOpenTrans = true;//开启事务。
dalHelper.tranLevel = IsolationLevel.ReadCommitted;//默认事务级别已是这个，还是设置一下，避免外部调整对此的影响。
}
ID = dalHelper.ExeNonQuery(sqlCommandText, false);//返回的是受影响的行数
if (_option != InsertOp.None && ID != null && Convert.ToInt32(ID) > 0)
{
if (AllowInsertID && !_Data.PrimaryCell.IsNullOrEmpty)//手工插ID
{
ID = _Data.PrimaryCell.Value;
}
else if (isNum)
{
ClearParameters();
ID = dalHelper.ExeScalar(_sqlCreate.GetMaxID(), false);
}
else
{
ID = null;
returnResult = true;
}
}
if (!isTrans)
{
dalHelper.EndTransaction();
}
#endregion
break;
}
if ((ID != null && Convert.ToString(ID) != "-2") || (dalHelper.recordsAffected > -2 && _option == InsertOp.None))
{
if (_option != InsertOp.None)
{
_Data.PrimaryCell.Value = ID;
}
returnResult = (_option == InsertOp.Fill) ? Fill(ID) : true;
}
}
else //更新
{
returnResult = dalHelper.ExeNonQuery(sqlCommandText, false) > 0;
}
}
else if (!_isInsertCommand && _Data.GetState() == 1 && dalHelper.recordsAffected != -2) // 更新操作。
{
//输出警告信息
return true;
}
return returnResult;
}
#region 插入
/// <summary>
/// Insert To DataBase
/// <para>插入数据</para>
/// </summary>
public bool Insert()
{
return Insert(false, _option);
}
/// <param name="option">InsertOp
/// <para>插入选项</para></param>
public bool Insert(InsertOp option)
{
return Insert(false, option);
}
/// <param name="autoSetValue">Automatic get values from context
/// <para>自动取值（从上下文环境中）</para></param>
public bool Insert(bool autoSetValue)
{
return Insert(autoSetValue, _option);
}
/// <param name="option">InsertOp
/// <para>插入选项</para></param>
public bool Insert(bool autoSetValue, InsertOp option)
{
CheckDisposed();
if (autoSetValue)
{
_UI.GetAll(!AllowInsertID);//允许插入ID时，也需要获取主键。
}
AopResult aopResult = AopResult.Default;
if (_aop.IsLoadAop)
{
_aop.Para.MAction = this;
_aop.Para.TableName = _sourceTableName;
_aop.Para.Row = _Data;
_aop.Para.AutoSetValue = autoSetValue;
_aop.Para.InsertOp = option;
_aop.Para.IsTransaction = dalHelper.isOpenTrans;
aopResult = _aop.Begin(Aop.AopEnum.Insert);
}
if (aopResult == AopResult.Default || aopResult == AopResult.Continue)
{
switch (dalHelper.dalType)
{
case DalType.Txt:
case DalType.Xml:
_aop.Para.IsSuccess = _noSqlAction.Insert(dalHelper.isOpenTrans);
break;
default:
ClearParameters();
string sql = _sqlCreate.GetInsertSql();
_isInsertCommand = true;
_option = option;
_aop.Para.IsSuccess = InsertOrUpdate(sql);
break;
}
}
else if (option != InsertOp.None)
{
_Data = _aop.Para.Row;
InitGlobalObject(false);
}
if (_aop.IsLoadAop && (aopResult == AopResult.Break || aopResult == AopResult.Continue))
{
_aop.End(Aop.AopEnum.Insert);
}
if (dalHelper.recordsAffected == -2)
{
OnError();
}
return _aop.Para.IsSuccess;
}
#endregion
#region 更新
/// <summary>
/// Update to database [Will automatically try to fetch from the UI when conditions are not passed]
/// <para>更新数据[不传where条件时将自动尝试从UI获取]</para>
/// </summary>
public bool Update()
{
return Update(null, true);
}
/// <param name="where">Sql statement where the conditions: 88, "id = 88"
/// <para>sql语句的where条件：88、"id=88"</para></param>
public bool Update(object where)
{
return Update(where, false);
}
/// <param name="autoSetValue">Automatic get values from context
/// <para>自动取值（从上下文环境中）</para></param>
public bool Update(bool autoSetValue)
{
return Update(null, autoSetValue);
}
/// <param name="autoSetValue">Automatic get values from context
/// <para>自动取值（从上下文环境中）</para></param>
public bool Update(object where, bool autoSetValue)
{
CheckDisposed();
if (autoSetValue)
{
_UI.GetAll(false);
}
if (where == null || Convert.ToString(where) == "")
{
where = _sqlCreate.GetPrimaryWhere();
}
AopResult aopResult = AopResult.Default;
if (_aop.IsLoadAop)
{
_aop.Para.MAction = this;
_aop.Para.TableName = _sourceTableName;
_aop.Para.Row = _Data;
_aop.Para.Where = where;
//_aop.Para.AopPara = aopPara;
_aop.Para.AutoSetValue = autoSetValue;
_aop.Para.UpdateExpression = _sqlCreate.updateExpression;
_aop.Para.IsTransaction = dalHelper.isOpenTrans;
aopResult = _aop.Begin(Aop.AopEnum.Update);
}
if (aopResult == AopResult.Default || aopResult == AopResult.Continue)
{
switch (dalHelper.dalType)
{
case DalType.Txt:
case DalType.Xml:
_aop.Para.IsSuccess = _noSqlAction.Update(_sqlCreate.FormatWhere(where));
break;
default:
ClearParameters();
string sql = _sqlCreate.GetUpdateSql(where);
_aop.Para.IsSuccess = InsertOrUpdate(sql);
break;
}
}
if (_aop.IsLoadAop && (aopResult == AopResult.Break || aopResult == AopResult.Continue))
{
_aop.End(Aop.AopEnum.Update);
}
if (dalHelper.recordsAffected == -2)
{
OnError();
}
return _aop.Para.IsSuccess;
}
#endregion
/// <summary>
/// Delete from database [Will automatically try to fetch from the UI when conditions are not passed]
/// <para>删除数据[不传where条件时将自动尝试从UI获取]</para>
/// </summary>
public bool Delete()
{
return Delete(null);
}
/// <param name="where">Sql statement where the conditions: 88, "id = 88"
/// <para>sql语句的where条件：88、"id=88"</para></param>
public bool Delete(object where)
{
CheckDisposed();
if (where == null || Convert.ToString(where) == "")
{
_UI.PrimayAutoGetValue();
where = _sqlCreate.GetPrimaryWhere();
}
AopResult aopResult = AopResult.Default;
if (_aop.IsLoadAop)
{
_aop.Para.MAction = this;
_aop.Para.TableName = _sourceTableName;
_aop.Para.Row = _Data;
_aop.Para.Where = where;
//_aop.Para.AopPara = aopPara;
_aop.Para.IsTransaction = dalHelper.isOpenTrans;
aopResult = _aop.Begin(Aop.AopEnum.Delete);
}
if (aopResult == AopResult.Default || aopResult == AopResult.Continue)
{
string deleteField = AppConfig.DB.DeleteField;
bool isToUpdate = !IsIgnoreDeleteField && !string.IsNullOrEmpty(deleteField) && _Data.Columns.Contains(deleteField);
switch (dalHelper.dalType)
{
case DalType.Txt:
case DalType.Xml:
string sqlWhere = _sqlCreate.FormatWhere(where);
if (isToUpdate)
{
_Data.Set(deleteField, true);
_aop.Para.IsSuccess = _noSqlAction.Update(sqlWhere);
}
else
{
_aop.Para.IsSuccess = _noSqlAction.Delete(sqlWhere);
}
break;
default:
ClearParameters();
string sql = isToUpdate ? _sqlCreate.GetDeleteToUpdateSql(where) : _sqlCreate.GetDeleteSql(where);
_aop.Para.IsSuccess = dalHelper.ExeNonQuery(sql, false) > 0;
break;
}
}
if (_aop.IsLoadAop && (aopResult == AopResult.Break || aopResult == AopResult.Continue))
{
_aop.End(Aop.AopEnum.Delete);
}
if (dalHelper.recordsAffected == -2)
{
OnError();
}
return _aop.Para.IsSuccess;
}
/// <summary>
/// select all data
///<para>选择所有数据</para>
/// </summary>
public MDataTable Select()
{
int count;
return Select(0, 0, null, out count);
}
/// <param name="where">Sql statement where the conditions: 88, "id = 88"
/// <para>sql语句的where条件：88、"id=88"</para></param>
public MDataTable Select(object where)
{
int count;
return Select(0, 0, where, out count);
}
public MDataTable Select(int topN, object where)
{
int count;
return Select(0, topN, where, out count);
}
/// <param name="pageIndex">pageIndex<para>第几页</para></param>
/// <param name="pageSize">pageSize<para>每页数量[为0时默认选择所有]</para></param>
public MDataTable Select(int pageIndex, int pageSize)
{
int count;
return Select(pageIndex, pageSize, null, out count);
}
public MDataTable Select(int pageIndex, int pageSize, object where)
{
int count;
return Select(pageIndex, pageSize, where, out count);
}
/// <param name="rowCount">The total number of records returned
/// <para>返回的记录总数</para></param>
public MDataTable Select(int pageIndex, int pageSize, object where, out int rowCount)
{
CheckDisposed();
rowCount = 0;
AopResult aopResult = AopResult.Default;
if (_aop.IsLoadAop)
{
_aop.Para.MAction = this;
_aop.Para.PageIndex = pageIndex;
_aop.Para.PageSize = pageSize;
_aop.Para.TableName = _sourceTableName;
_aop.Para.Row = _Data;
_aop.Para.Where = where;
_aop.Para.SelectColumns = _sqlCreate.selectColumns;
//_aop.Para.AopPara = aopPara;
_aop.Para.IsTransaction = dalHelper.isOpenTrans;
aopResult = _aop.Begin(Aop.AopEnum.Select);
}
if (aopResult == AopResult.Default || aopResult == AopResult.Continue)
{
string primaryKey = SqlFormat.Keyword(_Data.Columns.FirstPrimary.ColumnName, dalHelper.dalType);//主键列名。
switch (dalHelper.dalType)
{
case DalType.Txt:
case DalType.Xml:
_aop.Para.Table = _noSqlAction.Select(pageIndex, pageSize, _sqlCreate.FormatWhere(where), out rowCount, _sqlCreate.selectColumns);
break;
default:
_aop.Para.Table = new MDataTable(_TableName.Contains("(") ? "SysDefaultCustomTable" : _TableName);
_aop.Para.Table.LoadRow(_Data);
ClearParameters();//------------------------参数清除
DbDataReader sdReader = null;
string whereSql = string.Empty;//已格式化过的原生whereSql语句
if (_sqlCreate != null)
{
whereSql = _sqlCreate.FormatWhere(where);
}
else
{
whereSql = SqlFormat.Compatible(where, dalHelper.dalType, dalHelper.Com.Parameters.Count == 0);
}
bool byPager = pageIndex > 0 && pageSize > 0;//分页查询(第一页也要分页查询，因为要计算总数）
if (byPager && AppConfig.DB.PagerBySelectBase && dalHelper.dalType == DalType.MsSql && !dalHelper.Version.StartsWith("08"))// || dalHelper.dalType == DalType.Oracle
{
#region 存储过程执行
if (dalHelper.Com.Parameters.Count > 0)
{
dalHelper.debugInfo.Append(AppConst.HR + "error : select method deny call SetPara() method to add custom parameters!");
}
dalHelper.AddParameters("@PageIndex", pageIndex, DbType.Int32, -1, ParameterDirection.Input);
dalHelper.AddParameters("@PageSize", pageSize, DbType.Int32, -1, ParameterDirection.Input);
dalHelper.AddParameters("@TableName", _sqlCreate.GetSelectTableName(ref whereSql), DbType.String, -1, ParameterDirection.Input);
whereSql = _sqlCreate.AddOrderByWithCheck(whereSql, primaryKey);
dalHelper.AddParameters("@Where", whereSql, DbType.String, -1, ParameterDirection.Input);
sdReader = dalHelper.ExeDataReader("SelectBase", true);
#endregion
}
else
{
#region SQL语句分页执行
if (byPager)
{
rowCount = GetCount(whereSql);//利用自动缓存，避免每次分页都要计算总数。
//rowCount = Convert.ToInt32(dalHelper.ExeScalar(_sqlCreate.GetCountSql(whereSql), false));//分页查询先记算总数
}
if (!byPager || (rowCount > 0 && (pageIndex - 1) * pageSize < rowCount))
{
string sql = SqlCreateForPager.GetSql(dalHelper.dalType, dalHelper.Version, pageIndex, pageSize, whereSql, SqlFormat.Keyword(_TableName, dalHelper.dalType), rowCount, _sqlCreate.GetColumnsSql(), primaryKey, _Data.PrimaryCell.Struct.IsAutoIncrement);
sdReader = dalHelper.ExeDataReader(sql, false);
}
#endregion
}
if (sdReader != null)
{
// _aop.Para.Table.ReadFromDbDataReader(sdReader);//内部有关闭。
_aop.Para.Table = sdReader;
if (!byPager)
{
rowCount = _aop.Para.Table.Rows.Count;
}
else if (dalHelper.dalType == DalType.MsSql && AppConfig.DB.PagerBySelectBase)
{
rowCount = dalHelper.ReturnValue;
}
_aop.Para.Table.RecordsAffected = rowCount;
}
else
{
_aop.Para.Table.Rows.Clear();//预防之前的插入操作产生了一个数据行。
}
_aop.Para.IsSuccess = _aop.Para.Table.Rows.Count > 0;
ClearParameters();//------------------------参数清除
break;
}
}
else if (_aop.Para.Table.RecordsAffected > 0)
{
rowCount = _aop.Para.Table.RecordsAffected;//返回记录总数
}
if (_aop.IsLoadAop && (aopResult == AopResult.Break || aopResult == AopResult.Continue))
{
_aop.End(Aop.AopEnum.Select);
}
_aop.Para.Table.TableName = TableName;//Aop从Json缓存加载时会丢失表名。
_aop.Para.Table.Conn = _Data.Conn;
//修正DataType和Size、Scale
for (int i = 0; i < _aop.Para.Table.Columns.Count; i++)
{
MCellStruct msTable = _aop.Para.Table.Columns[i];
MCellStruct ms = _Data.Columns[msTable.ColumnName];
if (ms != null)
{
msTable.Load(ms);
}
}
if (_sqlCreate != null)
{
_sqlCreate.selectColumns = null;
}
return _aop.Para.Table;
}
/// <summary>
/// Select top one row to fill this.Data
/// <para>选择一行数据，并填充到Data属性[不传where条件时将自动尝试从UI获取]</para>
/// </summary>
public bool Fill()
{
return Fill(null);
}
/// <param name="where">Sql statement where the conditions: 88, "id = 88"
/// <para>sql语句的where条件：88、"id=88"</para></param>
public bool Fill(object where)
{
CheckDisposed();
if (where == null || Convert.ToString(where) == "")
{
_UI.PrimayAutoGetValue();
where = _sqlCreate.GetPrimaryWhere();
}
AopResult aopResult = AopResult.Default;
if (_aop.IsLoadAop)
{
_aop.Para.MAction = this;
_aop.Para.TableName = _sourceTableName;
_aop.Para.Row = _Data;
_aop.Para.Where = where;
_aop.Para.SelectColumns = _sqlCreate.selectColumns;
//_aop.Para.AopPara = aopPara;
_aop.Para.IsTransaction = dalHelper.isOpenTrans;
aopResult = _aop.Begin(Aop.AopEnum.Fill);
}
if (aopResult == AopResult.Default || aopResult == AopResult.Continue)
{
switch (dalHelper.dalType)
{
case DalType.Txt:
case DalType.Xml:
_aop.Para.IsSuccess = _noSqlAction.Fill(_sqlCreate.FormatWhere(where));
break;
default:
ClearParameters();
MDataTable mTable = dalHelper.ExeDataReader(_sqlCreate.GetTopOneSql(where), false);
// dalHelper.ResetConn();//重置Slave
if (mTable != null && mTable.Rows.Count > 0)
{
_Data.Clear();//清掉旧值。
_Data.LoadFrom(mTable.Rows[0], RowOp.None, true);//setselectcolumn("aa as bb")时
_aop.Para.IsSuccess = true;
}
else
{
_aop.Para.IsSuccess = false;
}
break;
}
}
else if (_aop.Para.IsSuccess)
{
_Data.Clear();//清掉旧值。
_Data.LoadFrom(_aop.Para.Row, RowOp.None, true);
}
if (_aop.IsLoadAop && (aopResult == AopResult.Break || aopResult == AopResult.Continue))
{
_aop.Para.Row = _Data;
_aop.End(Aop.AopEnum.Fill);
}
if (_aop.Para.IsSuccess)