/// <summary>
/// 获得序列
/// </summary>
/// <param name="fullName">序列名</param>
/// <param name="defaultSequence">默认序列</param>
/// <returns>序列实体</returns>
protected CiSequenceEntity GetSequenceByLock(string fullName, int defaultSequence)
{
CiSequenceEntity sequenceEntity = new CiSequenceEntity();
// 这里主要是为了判断是否存在
sequenceEntity = this.GetEntityByName(fullName);
if (sequenceEntity == null)
{
// 这里添加记录时加锁机制。
// 是否已经被锁住
this.ReturnStatusCode = StatusCode.CanNotLock.ToString();
for (int i = 0; i < SystemInfo.LockNoWaitCount; i++)
{
// 被锁定的记录数
int lockCount = DbCommonLibary.LockNoWait(DBProvider, CiSequenceTable.TableName, CiSequenceTable.FieldFullName, CiSequenceTable.TableName);
if (lockCount > 0)
{
sequenceEntity.FullName = fullName;
sequenceEntity.Reduction = defaultSequence - 1;
sequenceEntity.Sequence = defaultSequence;
sequenceEntity.Step = DefaultStep;
this.AddEntity(sequenceEntity);
this.ReturnStatusCode = StatusCode.LockOK.ToString();
break;
}
else
{
System.Threading.Thread.Sleep(RandomHelper.GetRandom(1, SystemInfo.LockNoWaitTickMilliSeconds));
}
}
if (this.ReturnStatusCode == StatusCode.LockOK.ToString())
{
// XuWangBin 这个是否能省略
sequenceEntity = this.GetEntityByName(fullName);
}
}
else
{
// 若记录已经存在，加锁，然后读取记录。
// 是否已经被锁住
this.ReturnStatusCode = StatusCode.CanNotLock.ToString();
for (int i = 0; i < SystemInfo.LockNoWaitCount; i++)
{
// 被锁定的记录数
int lockCount = DbCommonLibary.LockNoWait(DBProvider, CiSequenceTable.TableName, CiSequenceTable.FieldFullName, fullName);
if (lockCount > 0)
{
sequenceEntity = this.GetEntityByName(fullName);
this.ReturnStatusCode = StatusCode.LockOK.ToString();
break;
}
else
{
System.Threading.Thread.Sleep(RandomHelper.GetRandom(1, SystemInfo.LockNoWaitTickMilliSeconds));
}
}
}
return(sequenceEntity);
}
/// <summary>
/// 添加实体
/// </summary>
/// <param name="ciSequenceEntity">实体</param>
public string AddEntity(CiSequenceEntity ciSequenceEntity)
{
string sequence = string.Empty;
this.Identity = false;
SQLBuilder sqlBuilder = new SQLBuilder(DBProvider, this.Identity, this.ReturnId);
sqlBuilder.BeginInsert(this.CurrentTableName, CiSequenceTable.FieldId);
if (!this.Identity)
{
if (string.IsNullOrEmpty(ciSequenceEntity.Id))
{
sequence = BusinessLogic.NewGuid();
ciSequenceEntity.Id = sequence;
}
sqlBuilder.SetValue(CiSequenceTable.FieldId, ciSequenceEntity.Id);
}
else
{
if (!this.ReturnId && (DBProvider.CurrentDbType == CurrentDbType.Oracle || DBProvider.CurrentDbType == CurrentDbType.DB2))
{
if (DBProvider.CurrentDbType == CurrentDbType.Oracle)
{
sqlBuilder.SetFormula(CiSequenceTable.FieldId, "SEQ_" + this.CurrentTableName.ToUpper() + ".NEXTVAL ");
}
if (DBProvider.CurrentDbType == CurrentDbType.DB2)
{
sqlBuilder.SetFormula(CiSequenceTable.FieldId, "NEXT VALUE FOR SEQ_" + this.CurrentTableName.ToUpper());
}
}
else
{
if (this.Identity && (DBProvider.CurrentDbType == CurrentDbType.Oracle || DBProvider.CurrentDbType == CurrentDbType.DB2))
{
if (string.IsNullOrEmpty(ciSequenceEntity.Id.ToString()))
{
if (string.IsNullOrEmpty(sequence))
{
CiSequenceManager sequenceManager = new CiSequenceManager(DBProvider, this.Identity);
sequence = sequenceManager.GetSequence(this.CurrentTableName);
}
ciSequenceEntity.Id = sequence;
}
sqlBuilder.SetValue(CiSequenceTable.FieldId, ciSequenceEntity.Id);
}
}
}
this.SetEntity(sqlBuilder, ciSequenceEntity);
sqlBuilder.SetDBNow(CiSequenceTable.FieldCreateOn);
if (this.Identity && (DBProvider.CurrentDbType == CurrentDbType.SqlServer || DBProvider.CurrentDbType == CurrentDbType.Access))
{
sequence = sqlBuilder.EndInsert().ToString();
}
else
{
sqlBuilder.EndInsert();
}
return(sequence);
}
/// <summary>
/// 更新实体
/// </summary>
/// <param name="ciSequenceEntity">实体</param>
public int UpdateEntity(CiSequenceEntity ciSequenceEntity)
{
SQLBuilder sqlBuilder = new SQLBuilder(DBProvider);
sqlBuilder.BeginUpdate(this.CurrentTableName);
this.SetEntity(sqlBuilder, ciSequenceEntity);
sqlBuilder.SetWhere(CiSequenceTable.FieldId, ciSequenceEntity.Id);
return(sqlBuilder.EndUpdate());
}
/// <summary>
/// 批量产生主键
/// </summary>
/// <param name="sequenceEntity">实体</param>
/// <param name="sequenceCount">序列个数</param>
/// <returns>主键数组</returns>
private string[] GetSequence(CiSequenceEntity sequenceEntity, int sequenceCount)
{
string[] returnValue = new string[sequenceCount];
for (int i = 0; i < sequenceCount; i++)
{
returnValue[i] = GetSequence(sequenceEntity);
sequenceEntity.Sequence += sequenceEntity.Step;
}
return(returnValue);
}
/// <summary>
/// 设置实体
/// </summary>
/// <param name="sqlBuilder">SQL语句生成器</param>
/// <param name="ciSequenceEntity">实体</param>
private void SetEntity(SQLBuilder sqlBuilder, CiSequenceEntity ciSequenceEntity)
{
sqlBuilder.SetValue(CiSequenceTable.FieldFullName, ciSequenceEntity.FullName);
sqlBuilder.SetValue(CiSequenceTable.FieldPrefix, ciSequenceEntity.Prefix);
sqlBuilder.SetValue(CiSequenceTable.FieldSeparate, ciSequenceEntity.Separate);
sqlBuilder.SetValue(CiSequenceTable.FieldSequence, ciSequenceEntity.Sequence);
sqlBuilder.SetValue(CiSequenceTable.FieldReduction, ciSequenceEntity.Reduction);
sqlBuilder.SetValue(CiSequenceTable.FieldStep, ciSequenceEntity.Step);
sqlBuilder.SetValue(CiSequenceTable.FieldDescription, ciSequenceEntity.Description);
}
/// <summary>
/// 按名称获取实体
/// </summary>
/// <param name="fullName">序列名称</param>
/// <returns>实体</returns>
CiSequenceEntity GetEntityByName(string fullName)
{
CiSequenceEntity sequenceEntity = null;
DataTable dataTable = this.GetDT(CiSequenceTable.FieldFullName, fullName);
if (dataTable.Rows.Count > 0)
{
sequenceEntity = BaseEntity.Create <CiSequenceEntity>(dataTable);
}
return(sequenceEntity);
}
/// <summary>
/// 获取实体
/// </summary>
/// <param name="userInfo">用户</param>
/// <param name="id">主键</param>
/// <returns>实体</returns>
public CiSequenceEntity GetEntity(UserInfo userInfo, string id)
{
CiSequenceEntity sequenceEntity = null;
var parameter = ParameterUtil.CreateWithMessage(userInfo, MethodBase.GetCurrentMethod(), this.serviceName, RDIFrameworkMessage.SequenceService_GetEntity);
ServiceUtil.ProcessRDIReadDb(userInfo, parameter, dbProvider =>
{
sequenceEntity = new CiSequenceManager(dbProvider, userInfo).GetEntity(id);
});
return(sequenceEntity);
}
//
// 读取序列的
//
/// <summary>
/// 获取序列
/// </summary>
/// <param name="sequenceEntity">序列实体</param>
/// <returns>序列</returns>
string GetSequence(CiSequenceEntity sequenceEntity)
{
string sequence = sequenceEntity.Sequence.ToString();
if (this.FillZeroPrefix)
{
sequence = BusinessLogic.RepeatString("0", (this.SequenceLength - sequenceEntity.Sequence.ToString().Length)) + sequenceEntity.Sequence.ToString();
}
if (this.UsePrefix)
{
sequence = sequenceEntity.Prefix + sequenceEntity.Separate + sequence;
}
return(sequence);
}
/// <summary>
/// 获取降序列
/// </summary>
/// <param name="sequenceEntity">序列实体</param>
/// <returns>降序列</returns>
string GetReduction(CiSequenceEntity sequenceEntity)
{
string reduction = sequenceEntity.Reduction.ToString();
if (this.FillZeroPrefix)
{
reduction = BusinessLogic.RepeatString("0", (this.SequenceLength - sequenceEntity.Reduction.ToString().Length)) + sequenceEntity.Reduction.ToString();
}
if (this.UsePrefix)
{
reduction = sequenceEntity.Prefix + sequenceEntity.Separate + reduction;
}
return(reduction);
}
/// <summary>
/// 获取序列号数组
/// </summary>
/// <param name="fullName">序列名称</param>
/// <param name="sequenceCount">序列个数</param>
/// <param name="defaultSequence">默认序列</param>
/// <returns>序列号</returns>
public string[] GetBatchSequence(string fullName, int sequenceCount, int defaultSequence)
{
// 写入调试信息
#if (DEBUG)
int milliStart = Environment.TickCount;
Trace.WriteLine(DateTime.Now.ToString(SystemInfo.TimeFormat) + " :Begin: " + MethodBase.GetCurrentMethod().ReflectedType.Name + "." + MethodBase.GetCurrentMethod().Name);
#endif
string[] returnValue = new string[sequenceCount];
// 这里用锁的机制，提高并发控制能力
lock (SequenceLock)
{
this.DefaultSequence = defaultSequence;
switch (DBProvider.CurrentDbType)
{
case CurrentDbType.Access:
case CurrentDbType.MySql:
case CurrentDbType.SqlServer:
CiSequenceEntity sequenceEntity = this.GetEntityByAdd(fullName);
this.UpdateSequence(fullName, sequenceCount);
// 这里循环产生ID数组
returnValue = this.GetSequence(sequenceEntity, sequenceCount);
break;
case CurrentDbType.DB2:
for (int i = 0; i < sequenceCount; i++)
{
returnValue[i] = GetDB2Sequence(fullName);
}
break;
case CurrentDbType.Oracle:
for (int i = 0; i < sequenceCount; i++)
{
returnValue[i] = GetOracleSequence(fullName);
}
break;
}
}
// 写入调试信息
#if (DEBUG)
int milliEnd = Environment.TickCount;
Trace.WriteLine(DateTime.Now.ToString(SystemInfo.TimeFormat) + " Ticks: " + TimeSpan.FromMilliseconds(milliEnd - milliStart).ToString() + " :End: " + MethodBase.GetCurrentMethod().ReflectedType.Name + "." + MethodBase.GetCurrentMethod().Name);
#endif
return(returnValue);
}
/// <summary>
/// 获得原序列号
/// </summary>
/// <param name="fullName">序列名称</param>
/// <param name="defaultSequence">默认序列</param>
/// <param name="sequenceLength">序列长度</param>
/// <param name="fillZeroPrefix">是否填充补零</param>
/// <returns>序列号</returns>
public string GetOldSequence(string fullName, int defaultSequence, int sequenceLength, bool fillZeroPrefix)
{
string sequence = string.Empty;
// 这里用锁的机制，提高并发控制能力
lock (SequenceLock)
{
this.SequenceLength = sequenceLength;
this.FillZeroPrefix = fillZeroPrefix;
this.DefaultReduction = defaultSequence;
this.DefaultSequence = defaultSequence + 1;
CiSequenceEntity sequenceEntity = GetEntityByAdd(fullName);
sequence = GetSequence(sequenceEntity);
}
return(sequence);
}
/// <summary>
/// 添加序列
/// </summary>
/// <param name="userInfo">用户</param>
/// <param name="sequenceEntity">序列实体</param>
/// <param name="statusCode">状态码</param>
/// <param name="statusMessage">状态信息</param>
/// <returns>主键</returns>
public string Add(UserInfo userInfo, CiSequenceEntity sequenceEntity, out string statusCode, out string statusMessage)
{
string returnValue = string.Empty;
string returnCode = string.Empty;
string returnMessage = string.Empty;
var parameter = ParameterUtil.CreateWithMessage(userInfo, MethodBase.GetCurrentMethod(), this.serviceName, RDIFrameworkMessage.SequenceService_Add);
ServiceUtil.ProcessRDIReadDb(userInfo, parameter, dbProvider =>
{
var sequenceManager = new CiSequenceManager(dbProvider, userInfo);
returnValue = sequenceManager.Add(sequenceEntity, out returnCode);
returnMessage = sequenceManager.GetStateMessage(returnCode);
});
statusCode = returnCode;
statusMessage = returnMessage;
return(returnValue);
}
/// <summary>
/// 更新
/// </summary>
/// <param name="sequenceEntity">实体</param>
/// <param name="statusCode">状态码</param>
public int Update(CiSequenceEntity sequenceEntity, out string statusCode)
{
int returnValue = 0;
// 检查名称是否重复
if (this.Exists(CiSequenceTable.FieldFullName, sequenceEntity.FullName, sequenceEntity.Id))
{
// 名称已重复
statusCode = StatusCode.ErrorNameExist.ToString();
}
else
{
// 进行更新操作
returnValue = this.UpdateEntity(sequenceEntity);
statusCode = returnValue == 1 ? StatusCode.OKUpdate.ToString() : StatusCode.ErrorDeleted.ToString();
}
return(returnValue);
}
/// <summary>
/// 添加
/// </summary>
/// <param name="sequenceEntity">实体</param>
/// <param name="statusCode">状态码</param>
public string Add(CiSequenceEntity sequenceEntity, out string statusCode)
{
string returnValue = string.Empty;
// 检查是否重复
if (this.Exists(CiSequenceTable.FieldFullName, sequenceEntity.FullName))
{
// 名称已重复
statusCode = StatusCode.ErrorNameExist.ToString();
}
else
{
returnValue = this.AddEntity(sequenceEntity);
// 运行成功
statusCode = StatusCode.OKAdd.ToString();
}
return(returnValue);
}
/// <summary>
/// 获取添加
/// </summary>
/// <param name="fullName">序列名</param>
/// <returns>序列实体</returns>
CiSequenceEntity GetEntityByAdd(string fullName)
{
CiSequenceEntity sequenceEntity = null;
sequenceEntity = this.GetEntityByName(fullName);
if (sequenceEntity == null)
{
sequenceEntity = new CiSequenceEntity
{
FullName = fullName,
Sequence = this.DefaultSequence,
Reduction = this.DefaultReduction,
Step = DefaultStep,
Prefix = DefaultPrefix,
Separate = DefaultSeparator
};
// 这里是为了多种数据库的兼容
//sequenceEntity.Id = BusinessLogic.NewGuid();
this.Add(sequenceEntity, true);
}
return(sequenceEntity);
}
/// <summary>
/// 添加
/// </summary>
/// <param name="ciSequenceEntity">实体</param>
/// <returns>主键</returns>
public string Add(CiSequenceEntity ciSequenceEntity)
{
return(this.AddEntity(ciSequenceEntity));
}
/// <summary>
/// 更新
/// </summary>
/// <param name="ciSequenceEntity">实体</param>
public int Update(CiSequenceEntity ciSequenceEntity)
{
return(this.UpdateEntity(ciSequenceEntity));
}
/// <summary>
/// 添加
/// </summary>
/// <param name="ciSequenceEntity">实体</param>
/// <param name="identity">自增量方式</param>
/// <returns>主键</returns>
public string Add(CiSequenceEntity ciSequenceEntity, bool identity)
{
this.Identity = identity;
return(this.AddEntity(ciSequenceEntity));
}
/// <summary>
/// 获得序列
/// </summary>
/// <param name="fullName">序列名称</param>
/// <param name="defaultSequence">默认序列</param>
/// <param name="sequenceLength">序列长度</param>
/// <param name="fillZeroPrefix">是否填充零</param>
/// <returns>序列实体</returns>
public string GetSequence(string fullName, int defaultSequence, int sequenceLength, bool fillZeroPrefix)
{
this.DefaultSequence = defaultSequence;
this.SequenceLength = sequenceLength;
this.FillZeroPrefix = fillZeroPrefix;
this.DefaultReduction = defaultSequence - 1;
// 写入调试信息
#if (DEBUG)
int milliStart = Environment.TickCount;
Trace.WriteLine(DateTime.Now.ToString(SystemInfo.TimeFormat) + " :Begin: " + MethodBase.GetCurrentMethod().ReflectedType.Name + "." + MethodBase.GetCurrentMethod().Name);
#endif
CiSequenceEntity sequenceEntity = null;
// 这里用锁的机制，提高并发控制能力
lock (SequenceLock)
{
switch (DBProvider.CurrentDbType)
{
case CurrentDbType.Access:
case CurrentDbType.MySql:
case CurrentDbType.SqlServer:
sequenceEntity = this.GetEntityByAdd(fullName);
this.UpdateSequence(fullName);
break;
case CurrentDbType.Oracle:
sequenceEntity = this.GetEntityByAdd(fullName);
this.UpdateSequence(fullName);
/*
* // 这里加锁机制。
* if (DBProvider.InTransaction)
* {
* // 不可以影响别人的事务
* sequenceEntity = this.GetSequenceByLock(fullName, defaultSequence);
* if (this.ReturnStatusCode == StatusCode.LockOK.ToString())
* {
* this.ReturnStatusCode = this.UpdateSequence(fullName) > 0 ? StatusCode.LockOK.ToString() : StatusCode.CanNotLock.ToString();
* }
* }
* else
* {
* // 开始事务
* IDbTransaction dbTransaction = DBProvider.BeginTransaction();
* try
* {
* this.ReturnStatusCode = StatusCode.CanNotLock.ToString();
* sequenceEntity = this.GetSequenceByLock(fullName, defaultSequence);
* if (this.ReturnStatusCode == StatusCode.LockOK.ToString())
* {
* this.ReturnStatusCode = StatusCode.CanNotLock.ToString();
* if (this.UpdateSequence(fullName) > 0)
* {
* // 提交事务
* dbTransaction.Commit();
* this.ReturnStatusCode = StatusCode.LockOK.ToString();
* }
* else
* {
* // 回滚事务
* dbTransaction.Rollback();
* }
* }
* else
* {
* // 回滚事务
* dbTransaction.Rollback();
* }
* }
* catch (System.Exception ex)
* {
* System.Console.WriteLine(ex);
* // 回滚事务
* dbTransaction.Rollback();
* this.ReturnStatusCode = StatusCode.CanNotLock.ToString();
* }
* }
*/
break;
}
}
// 写入调试信息
#if (DEBUG)
int milliEnd = Environment.TickCount;
Trace.WriteLine(DateTime.Now.ToString(SystemInfo.TimeFormat) + " Ticks: " + TimeSpan.FromMilliseconds(milliEnd - milliStart).ToString() + " :End: " + MethodBase.GetCurrentMethod().ReflectedType.Name + "." + MethodBase.GetCurrentMethod().Name);
#endif
return(GetSequence(sequenceEntity));
}
/// <summary>
/// 获取倒序序列号
/// </summary>
/// <param name="fullName">序列名称</param>
/// <param name="defaultSequence">默认序列值</param>
/// <returns>序列号</returns>
public string GetReduction(string fullName, int defaultSequence)
{
// 写入调试信息
#if (DEBUG)
int milliStart = Environment.TickCount;
Trace.WriteLine(DateTime.Now.ToString(SystemInfo.TimeFormat) + " :Begin: " + MethodBase.GetCurrentMethod().ReflectedType.Name + "." + MethodBase.GetCurrentMethod().Name);
#endif
CiSequenceEntity sequenceEntity = null;
// 这里用锁的机制，提高并发控制能力
lock (SequenceLock)
{
this.DefaultReduction = defaultSequence;
this.DefaultSequence = defaultSequence + 1;
switch (DBProvider.CurrentDbType)
{
case CurrentDbType.Access:
case CurrentDbType.MySql:
case CurrentDbType.SqlServer:
sequenceEntity = GetEntityByAdd(fullName);
this.UpdateReduction(fullName);
break;
case CurrentDbType.Oracle:
if (DBProvider.InTransaction)
{
// 不可以影响别人的事务
sequenceEntity = this.GetSequenceByLock(fullName, defaultSequence);
if (this.ReturnStatusCode == StatusCode.LockOK.ToString())
{
this.ReturnStatusCode = this.UpdateReduction(fullName) > 0 ? StatusCode.LockOK.ToString() : StatusCode.CanNotLock.ToString();
}
}
else
{
// 这里加锁机制。
try
{
// 开始事务
DBProvider.BeginTransaction();
this.ReturnStatusCode = StatusCode.CanNotLock.ToString();
sequenceEntity = this.GetSequenceByLock(fullName, defaultSequence);
if (this.ReturnStatusCode == StatusCode.LockOK.ToString())
{
this.ReturnStatusCode = StatusCode.CanNotLock.ToString();
if (this.UpdateReduction(fullName) > 0)
{
// 提交事务
DBProvider.CommitTransaction();
this.ReturnStatusCode = StatusCode.LockOK.ToString();
}
else
{
// 回滚事务
DBProvider.RollbackTransaction();
}
}
else
{
// 回滚事务
DBProvider.RollbackTransaction();
}
}
catch
{
// 回滚事务
DBProvider.RollbackTransaction();
this.ReturnStatusCode = StatusCode.CanNotLock.ToString();
}
}
break;
}
}
// 写入调试信息
#if (DEBUG)
int milliEnd = Environment.TickCount;
Trace.WriteLine(DateTime.Now.ToString(SystemInfo.TimeFormat) + " Ticks: " + TimeSpan.FromMilliseconds(milliEnd - milliStart).ToString() + " :End: " + MethodBase.GetCurrentMethod().ReflectedType.Name + "." + MethodBase.GetCurrentMethod().Name);
#endif
return(GetReduction(sequenceEntity));
}
