internal Queue(InternalContext context, SetDataMap map)
{
ID = Guid.NewGuid();
Context = context;
Map = map;
CreateAt = DateTime.Now;
}
/// <summary>
/// 释放资源
/// </summary>
/// <param name="disposing">是否释放托管资源</param>
private void Dispose(bool disposing)
{
//释放托管资源
if (disposing)
{
Context = null;
Map = null;
_expBuilder = null;
_sqlBuilder = null;
_procBuilder = null;
LazyAct = null;
}
}
/// <summary>
/// 延迟执行数据库交互，并提交到队列
/// </summary>
/// <param name="act">要延迟操作的委托</param>
/// <param name="map">字段映射</param>
/// <param name="joinSoftDeleteCondition">是否加入逻辑删除数据过滤</param>
internal int CommitLazy(SetDataMap map, Func <Queue, int> act, bool joinSoftDeleteCondition)
{
if (!ContextProvider.IsMergeCommand)
{
return(Commit(map, act, joinSoftDeleteCondition));
}
try
{
var queue = CreateQueue(map);
if (joinSoftDeleteCondition)
{
queue.ExpBuilder.DeleteSortCondition();
}
queue.LazyAct = act;
_groupQueueList.Add(_queue);
return(0);
}
finally { Clear(); }
}
/// <summary>
/// 立即执行
/// </summary>
/// <param name="act">要延迟操作的委托</param>
/// <param name="map">字段映射</param>
/// <param name="joinSoftDeleteCondition">是否加入逻辑删除数据过滤</param>
internal async Task <TReturn> CommitAsync <TReturn>(SetDataMap map, Func <Queue, Task <TReturn> > act, bool joinSoftDeleteCondition)
{
try
{
var queue = CreateQueue(map);
if (joinSoftDeleteCondition)
{
queue.ExpBuilder.DeleteSortCondition();
}
return(await act(queue));
}
finally
{
Clear();
if (ContextProvider.IsUnitOfWork)
{
ContextProvider.Executeor.DataBase.Close(true);
}
}
}
/// <summary>
/// 立即执行
/// </summary>
/// <param name="act">要延迟操作的委托</param>
/// <param name="map">字段映射</param>
/// <param name="joinSoftDeleteCondition">是否加入逻辑删除数据过滤</param>
internal TReturn Commit <TReturn>(SetDataMap map, Func <Queue, TReturn> act, bool joinSoftDeleteCondition)
{
try
{
// 立即删除时，先提交队列中的数据
ContextProvider.QueueManger.CommitAll();
var queue = CreateQueue(map);
if (joinSoftDeleteCondition)
{
queue.ExpBuilder.DeleteSortCondition();
}
return(act(queue));
}
finally
{
Clear();
if (!ContextProvider.IsMergeCommand)
{
ContextProvider.Executeor.DataBase.Close(true);
}
}
}
/// <summary>
/// 提供字段插入表达式树的解析
/// </summary>
/// <param name="dbProvider">数据库提供者（不同数据库的特性）</param>
/// <param name="map">字段映射</param>
/// <param name="paramList">SQL参数列表</param>
public InsertVisitor(AbsDbProvider dbProvider, SetDataMap map, List <DbParameter> paramList) : base(dbProvider, map, paramList)
{
}
/// <summary>
/// 获取当前队列（不存在，则创建）
/// </summary>
/// <param name="map">字段映射</param>
internal Queue CreateQueue(SetDataMap map)
{
return(_queue ?? (_queue = new Queue(ContextProvider, map)));
}
/// <summary> /// Select筛选字段时表达式树的解析 /// </summary> /// <param name="map">字段映射</param> /// <param name="paramList">SQL参数列表</param> public virtual WhereVisitor CreateWhereVisitor(SetDataMap map, List <DbParameter> paramList) => new WhereVisitor(this, map, paramList);
/// <summary>
/// 存储过程生成器
/// </summary>
/// <param name="dbProvider">数据库驱动</param>
/// <param name="setMap">实体类映射</param>
/// <param name="name">存储过程名称</param>
internal ProcBuilder(AbsDbProvider dbProvider, SetDataMap setMap, string name)
{
_dbProvider = dbProvider;
_setMap = setMap;
Name = name;
}
/// <summary> /// 提供字段排序时表达式树的解析 /// </summary> /// <param name="map">字段映射</param> /// <param name="paramList">SQL参数列表</param> public virtual OrderByVisitor CreateOrderByVisitor(SetDataMap map, List <DbParameter> paramList) => new OrderByVisitor(this, map, paramList);
/// <summary> /// 提供字段插入表达式树的解析 /// </summary> /// <param name="map">字段映射</param> /// <param name="paramList">SQL参数列表</param> public virtual InsertVisitor CreateInsertVisitor(SetDataMap map, List <DbParameter> paramList) => new InsertVisitor(this, map, paramList);
/// <summary> /// 提供字段赋值时表达式树的解析 /// </summary> /// <param name="map">字段映射</param> /// <param name="paramList">SQL参数列表</param> public virtual AssignVisitor CreateAssignVisitor(SetDataMap map, List <DbParameter> paramList) => new AssignVisitor(this, map, paramList);
/// <summary>
/// Select筛选字段时表达式树的解析
/// </summary>
/// <param name="dbProvider">数据库提供者（不同数据库的特性）</param>
/// <param name="map">字段映射</param>
/// <param name="paramList">SQL参数列表</param>
public OleDbWhereVisitor(AbsDbProvider dbProvider, SetDataMap map, List <DbParameter> paramList) : base(dbProvider, map, paramList)
{
}
/// <summary>
/// 默认构造器
/// </summary>
/// <param name="dbProvider">数据库提供者（不同数据库的特性）</param>
/// <param name="map">字段映射</param>
/// <param name="paramList">SQL参数列表</param>
protected AbsSqlVisitor(AbsDbProvider dbProvider, SetDataMap map, List <DbParameter> paramList)
{
DbProvider = dbProvider;
SetMap = map;
ParamList = paramList;
}
/// <summary> /// Select筛选字段时表达式树的解析 /// </summary> /// <param name="map">字段映射</param> /// <param name="paramList">SQL参数列表</param> public virtual SelectVisitor CreateSelectVisitor(SetDataMap map, List <DbParameter> paramList) => new SelectVisitor(this, map, paramList);
internal ExpressionBuilder(SetDataMap map)
{
SetMap = map;
}
public override WhereVisitor CreateWhereVisitor(SetDataMap map, List <DbParameter> paramList) => new OleDbWhereVisitor(this, map, paramList);
