/// <summary>
/// 创建集合检索函数表达式。
/// </summary>
/// <param name="source"></param>
/// <param name="func"></param>
/// <param name="argus"></param>
public DbRetrievalFunctionExpression(IDbUnitTypeExpression source, MethodInfo func, params DbExpression[] argus)
: base(source, func, argus)
{
}
/// <summary>
/// 创建汇总函数表达式。
/// </summary>
/// <param name="source">源表达式。</param>
/// <param name="function">函数CLR描述对象。</param>
/// <param name="arguments">函数参数。</param>
public DbAggregateFunctionExpression(IDbUnitTypeExpression source, MemberInfo function, params DbExpression[] arguments)
: base(source, function, arguments)
{
}
/// <summary>
/// 初始化数据集合函数。
/// </summary>
/// <param name="source">单元表达式。</param>
/// <param name="function">函数CLR对象。</param>
/// <param name="arguments">函数参数。</param>
public DbSourceFunctionExpression(IDbUnitTypeExpression source, MemberInfo function, params DbExpression[] arguments)
: base(function, arguments)
{
Source = source;
}
