/// <summary>
/// 创建查询
/// </summary>
public IDbQueryable <TResult> CreateQuery <TResult>(DbExpression exp = null)
{
IDbQueryable <TResult> query = new DbQueryable <TResult>
{
DbContext = _context,
DbExpressions = new List <DbExpression>(_dbExpressions)
};
if (exp != null)
{
query.DbExpressions.Add(exp);
}
return(query);
}
/// <summary>
/// 返回特定类型的对象的集合，其中类型由 T 参数定义
/// </summary>
public IDbQueryable <T> GetTable <T>()
{
DbQueryable <T> queryable = new DbQueryable <T> {
DbContext = this
};
queryable.DbExpressions = new List <DbExpression> {
new DbExpression
{
DbExpressionType = DbExpressionType.GetTable,
Expressions = new[] { Expression.Constant(typeof(T)) }
}
};
return(queryable);
}