/// <summary>
/// 异步执行SQL 语句，并返回 <see cref="IEnumerable"/> 对象
/// </summary>
/// <typeparam name="T">实体类型</typeparam>
/// <param name="query">SQL 命令</param>
/// <returns></returns>
public async Task <List <T> > ExecuteListAsync <T>(IDbQueryable <T> query)
{
DbCommandDefinition definition = query.Resolve();
IDbCommand cmd = this.CreateCommand(definition.CommandText, definition.CommandType, definition.Parameters);
return(await this.ExecuteListAsync <T>(cmd, definition as SelectDbCommandDefinition));
}
/// <summary>
/// 执行SQL 语句，并返回 <see cref="DataTable"/> 对象
/// </summary>
/// <param name="query">SQL 命令</param>
/// <returns></returns>
public async Task <DataTable> ExecuteDataTableAsync(IDbQueryable query)
{
DbCommandDefinition definition = query.Resolve();
IDbCommand cmd = this.CreateCommand(definition);
return(await this.ExecuteDataTableAsync(cmd));
}
/// <summary>
/// 异步执行SQL 语句，并返回单个实体对象
/// </summary>
/// <param name="query">SQL 命令</param>
/// <returns></returns>
public async Task <T> ExecuteAsync <T>(IDbQueryable <T> query)
{
DbCommandDefinition definition = query.Resolve();
IDbCommand cmd = this.CreateCommand(definition);
return(await this.ExecuteAsync <T>(cmd, definition as SelectDbCommandDefinition));
}
// 解析批量 INSERT 语句
protected void ResolveBulk(List <DbCommandDefinition> sqlList, List <IDbQueryable> bulkList)
{
// SQL 只能接收1000个
int pageSize = 1000;
int pages = bulkList.Page(pageSize);
for (int pageIndex = 1; pageIndex <= pages; pageIndex++)
{
var dbQueryables = bulkList.Skip((pageIndex - 1) * pageSize).Take(pageSize);
int i = 0;
int t = dbQueryables.Count();
var builder = new System.Text.StringBuilder(128);
foreach (IDbQueryable query in dbQueryables)
{
i += 1;
query.Parameterized = false;
query.Bulk = new BulkInsertInfo {
OnlyValue = i != 1, IsEndPos = i == t
};
DbCommandDefinition cmd = query.Resolve();
builder.Append(cmd.CommandText);
}
if (builder.Length > 0)
{
sqlList.Add(new DbCommandDefinition(builder.ToString()));
}
}
}
/// <summary>
/// 执行SQL 语句，并返回 <see cref="DataTable"/> 对象
/// </summary>
/// <param name="query">SQL 命令</param>
/// <returns></returns>
public DataTable ExecuteDataTable(IDbQueryable query)
{
DbCommandDefinition definition = query.Resolve();
IDbCommand cmd = this.CreateCommand(definition);
return(this.ExecuteDataTable(cmd));
}
/// <summary>
/// 执行SQL 语句，并返回 <see cref="IEnumerable"/> 对象
/// </summary>
/// <typeparam name="T">实体类型</typeparam>
/// <param name="query">SQL 命令</param>
/// <returns></returns>
public List <T> ExecuteList <T>(IDbQueryable <T> query)
{
DbCommandDefinition definition = query.Resolve();
IDbCommand cmd = this.CreateCommand(definition);
return(this.ExecuteList <T>(cmd, definition as SelectDbCommandDefinition));
}
/// <summary>
/// 创建 SQL 命令
/// </summary>
/// <param name="definition">命令描述</param>
/// <returns></returns>
public IDbCommand CreateCommand(DbCommandDefinition definition)
{
return(this.CreateCommand(definition.CommandText, definition.CommandType, definition.Parameters));
}
