/// <summary>
/// 删除视图。
/// </summary>
/// <param name="type">指定对象类型。</param>
/// <param name="name">操作对象名称。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase DropView(Type type, DbName name = null)
{
if (name == null)
{
var View = _Metadata.Table(type);
name = DbName.Create(View.Name, View.Schema);
}
return(new DbDropObjectOperate(_Context, type, EOperateType.DropView, name));
}
/// <summary>
/// 创建视图。
/// </summary>
/// <param name="type">指定对象类型。</param>
/// <param name="content">视图内容。</param>
/// <param name="name">指定视图名。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase CreateView(Type type, string content, DbName name = null)
{
if (name == null)
{
var table = _Metadata.Table(type);
name = DbName.Create(table.Name, table.Schema);
}
return(new DbCreateViewOperate(_Context, type, name, content));
}
/// <summary>
/// 创建视图。
/// </summary>
/// <param name="type">指定对象类型。</param>
/// <param name="query">查询内容。</param>
/// <param name="name">指定视图名。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase CreateView(Type type, IQueryable query, DbName name = null)
{
if (name == null)
{
var table = _Metadata.Table(type);
name = DbName.Create(table.Name, table.Schema);
}
return(new DbCreateViewOperate(_Context, type, name, query.Expression));
}
/// <summary>
/// 重命名数据表。
/// </summary>
/// <param name="type">指定对象类型。</param>
/// <param name="newName">操作对象名称。</param>
/// <param name="name">操作对象名称。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase RenameTable(Type type, string newName, DbName name = null)
{
if (name == null)
{
var table = _Metadata.Table(type);
name = DbName.Create(table.Name, table.Schema);
}
return(new DbRenameObjectOperate(_Context, type, EOperateType.RenameTable, name, newName));
}
/// <summary>
/// 判断指定的数据表是否存在。
/// </summary>
/// <param name="type">指定对象类型。</param>
/// <param name="name">操作对象名称。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase TableIsExsit(Type type, DbName name = null)
{
if (name == null)
{
var table = _Metadata.Table(type);
name = DbName.Create(table.Name, table.Schema);
}
return(new DbObjectIsExsitOperate(_Context, type, EOperateType.TableIsExsit, name));
}
/// <summary>
/// 判断指定的数据表是否存在。
/// </summary>
/// <typeparam name="T">映射的对象类型。</typeparam>
/// <param name="name">表名。</param>
/// <param name="schema">架构名。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase TableIsExsit <T>(string name = "", string schema = "")
{
if (name == "")
{
return(TableIsExsit(typeof(T)));
}
else
{
return(TableIsExsit(typeof(T), DbName.Create(name, schema)));
}
}
/// <summary>
/// 删除视图。
/// </summary>
/// <typeparam name="T">映射的对象类型。</typeparam>
/// <param name="name">视图名。</param>
/// <param name="schema">架构名。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase DropView <T>(string name = "", string schema = "")
{
if (name == "")
{
return(DropView(typeof(T)));
}
else
{
return(DropView(typeof(T), DbName.Create(name, schema)));
}
}
/// <summary>
/// 创建视图。
/// </summary>
/// <typeparam name="T">指定对象类型。</typeparam>
/// <param name="query">查询内容。</param>
/// <param name="name">视图名。</param>
/// <param name="schema">架构名。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase CreateView <T>(IQueryable <T> query, string name = "", string schema = "")
{
if (name == "")
{
return(CreateView(typeof(T), query));
}
else
{
return(CreateView(typeof(T), query, DbName.Create(name, schema)));
}
}
/// <summary>
/// 删除数据表。
/// </summary>
/// <typeparam name="T">映射的对象类型。</typeparam>
/// <param name="newName">操作对象名称。</param>
/// <param name="name">表名。</param>
/// <param name="schema">架构名。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase RenameTable <T>(string newName, string name = "", string schema = "")
{
if (name == "")
{
return(RenameTable(typeof(T), newName));
}
else
{
return(RenameTable(typeof(T), newName, DbName.Create(name, schema)));
}
}
/// <summary>
/// 创建数据表变量。
/// </summary>
/// <param name="type">指定对象类型。</param>
/// <param name="name">指定表名。</param>
/// <returns>操作实例。</returns>
public DbMaintenanceOperateBase CreateTableVariable(Type type, string name)
{
return(new DbCreateTableOperate(_Context, type, EOperateType.CreateTableVariable, DbName.Contact(name)));
}