Cách tạo truy vấn tiêu chí cho truy vấn sql đã cho

Question

Tôi đang tạo truy vấn ICriteria cho truy vấn sql tương đương này.

SELECT fCustomerID, 
     ISNULL(
       (SELECT SUM(payinv.fAmount) AS Expr1 
       FROM dbo.tARPayment AS pay 
       INNER JOIN dbo.tARPaymentInvoice AS payinv ON pay.fPaymentID = payinv.fPaymentID 
       INNER JOIN dbo.tARInvoice AS inv ON payinv.fInvoiceID = inv.fARInvoiceID 
       WHERE (pay.fIsPosted = CASE pay.fPaymentType WHEN 'CM' THEN 0 WHEN 'EPD' THEN 0 ELSE 1 END) 
        AND (inv.fCustomerID <> dbo.tARCustomer.fCustomerID) 
        AND (pay.fCustomerID = dbo.tARCustomer.fCustomerID)), 0) 
FROM dbo.tARCustomer 
GROUP BY fCustomerID 

Nhưng tôi không nhận được bất kỳ cách nào để tạo truy vấn ICRiteria tương đương nhibernate.

Đây là lớp thanh toán

public partial class tARPayment 
{ 
    #region Constructor 

    /// <summary> 
    /// Initializes a new instance of the <see cref="tARPayment"/> class. 
    /// </summary> 
    public tARPayment() 
    { 
    } 

    /// <summary> 
    /// Initializes a new instance of the <see cref="tARPayment"/> class. 
    /// </summary> 
    /// <param name="fPaymentID">The fPaymentID of guid type.</param> 
    public tARPayment(System.Guid fPaymentID) 
    { 
     this.ID = fPaymentID; 
    } 
    #endregion 

    #region Properties 

    /// <summary> 
    /// Gets or sets payment id. 
    /// </summary> 
    public virtual System.Guid fPaymentID { get; set; } 

    /// <summary> 
    /// Gets or sets fCustomerID. 
    /// </summary> 
    public virtual System.Guid fCustomerID { get; set; } 

    /// <summary> 
    /// Gets or sets check number. 
    /// </summary> 
    public virtual string fCheckNumber { get; set; } 

    /// <summary> 
    /// Gets or sets amount. 
    /// </summary> 
    public virtual decimal fAmount { get; set; }  

    /// <summary> 
    /// Gets or sets customer detail. 
    /// </summary> 
    public virtual tARCustomer Customer { get; set; } 

    public virtual IList<tARPaymentInvoice> PaymentInvoices { get; set; }   

    #endregion 

    #region Methods 
    /// <summary> 
    /// partial class for payment. 
    /// </summary> 
    /// <returns>The method get code.</returns> 
    public override int GetHashCode() 
    { 
     return ID.GetHashCode(); 
    } 
    #endregion 
} 

Đây là một lớp hóa đơn

public partial class tARInvoice 
{ 
    #region Constructor 
    /// <summary> 
    /// Initializes a new instance of the <see cref="tARInvoice"/> class. 
    /// </summary> 
    public tARInvoice() 
    { 
    } 

    /// <summary> 
    /// Initializes a new instance of the <see cref="tARInvoice"/> class. 
    /// </summary> 
    /// <param name="fARInvoiceID">The fARInvoiceID.</param> 
    public tARInvoice(System.Guid fARInvoiceID) 
    { 
     this.ID = fARInvoiceID; 
    } 

    #endregion 

    #region Properties 
    /// <summary> 
    /// Gets or sets fARInvoiceID. 
    /// </summary> 
    public virtual Guid fARInvoiceID { get; set; } 

    /// <summary> 
    /// Gets or sets fCustomerID. 
    /// </summary> 
    public virtual Guid fCustomerID { get; set; } 


    /// <summary> 
    /// Gets or sets Delivery Method. 
    /// </summary> 
    public virtual string fDeliveryMethod { get; set; } 

    /// <summary> 
    /// Gets or sets Invoice Number. 
    /// </summary> 
    public virtual int? fARInvoiceNumber { get; set; } 



    public virtual tARCustomer Customer { get; set; } 

    public virtual IList<tARPaymentInvoice> PaymentInvoices { get; set; }   

    #endregion 

    #region Methods 
    /// <summary> 
    /// retrieve Hash Code. 
    /// </summary> 
    /// <returns>The method get code.</returns> 
    public override int GetHashCode() 
    { 
     return ID.GetHashCode(); 
    } 
    #endregion 
} 

Đây là một lớp hóa đơn thanh toán.

public partial class tARPaymentInvoice 
{ 
    #region Constructor 
    /// <summary> 
    /// Initializes a new instance of the <see cref="tARPaymentInvoice"/> class. 
    /// </summary> 
    public tARPaymentInvoice() 
    { 
    } 

    /// <summary> 
    /// Initializes a new instance of the <see cref="tARPaymentInvoice"/> class. 
    /// </summary> 
    /// <param name="fPaymentInvoiceID">The Invoice ID.</param> 
    public tARPaymentInvoice(System.Guid fPaymentInvoiceID) 
    { 
     this.ID = fPaymentInvoiceID; 
    } 
    #endregion 

    #region Properties 
    /// <summary> 
    /// Gets or sets fPaymentInvoiceID. 
    /// </summary> 
    public virtual System.Guid fPaymentInvoiceID { get; set; } 

    /// <summary> 
    /// Gets or sets fPaymentID. 
    /// </summary> 
    public virtual System.Guid fPaymentID { get; set; } 

    /// <summary> 
    /// Gets or sets fInvoiceID. 
    /// </summary> 
    public virtual System.Guid fInvoiceID { get; set; }   


    /// <summary> 
    /// Gets or sets tARPayment. 
    /// </summary> 
    public virtual tARPayment Payment { get; set; } 

    /// <summary> 
    /// Gets or sets tARInvoice. 
    /// </summary> 
    public virtual tARInvoice Invoice { get; set; } 

    #endregion 

    #region Methods 
    /// <summary> 
    /// get hash codes. 
    /// </summary>   
    /// <returns>The hash code.</returns> 
    public override int GetHashCode() 
    { 
     return ID.GetHashCode(); 
    } 
    #endregion 
} 

Answer 1

Thay vì chuyển đổi truy vấn trên sang LINQ hoặc HQL, tôi khuyên bạn nên đặt truy vấn vào chế độ xem và sau đó sử dụng NHibernate để truy vấn chế độ xem đó.

SQL

CREATE VIEW vCustomerAmount AS 
SELECT fCustomerID, 
     ISNULL(
       (SELECT SUM(payinv.fAmount) AS Expr1 
       FROM dbo.tARPayment AS pay 
       INNER JOIN dbo.tARPaymentInvoice AS payinv ON pay.fPaymentID = payinv.fPaymentID 
       INNER JOIN dbo.tARInvoice AS inv ON payinv.fInvoiceID = inv.fARInvoiceID 
       WHERE (pay.fIsPosted = CASE pay.fPaymentType WHEN 'CM' THEN 0 WHEN 'EPD' THEN 0 ELSE 1 END) 
        AND (inv.fCustomerID <> dbo.tARCustomer.fCustomerID) 
        AND (pay.fCustomerID = dbo.tARCustomer.fCustomerID)), 0) [Amount] 
FROM dbo.tARCustomer 
GROUP BY fCustomerID 

C# DTO

public class CustomerAmount 
{ 
    public int fCustomerID { get; set; } 
    public decimal Amount { get; set; } 
} 

Query

List<CustomerAmount> customerAmounts = session.Query<CustomerAmount>().ToList(); 

Answer 2

Không chắc về nHibernate, nhưng làm es truy vấn được viết lại này giúp nhận được câu trả lời tương tự và là thứ bạn có thể chạy dễ dàng hơn?

SELECT T.fCustomerID, 
     coalesce(SUM(payinv.fAmount), 0) as SumAmt 
    FROM 
     dbo.tARCustomer T 
     JOIN dbo.tARPayment AS pay 
      ON T.fCustomerID = pay.fCustomerID 
      AND pay.fIsPosted = CASE pay.fPaymentType 
           WHEN 'CM' THEN 0 
           WHEN 'EPD' THEN 0 
           ELSE 1 END 
      JOIN dbo.tARPaymentInvoice AS payinv 
       ON pay.fPaymentID = payinv.fPaymentID 
       INNER JOIN dbo.tARInvoice AS inv 
        ON payinv.fInvoiceID = inv.fARInvoiceID 
       AND inv.fCustomerID <> T.fCustomerID 
    GROUP BY 
     T.fCustomerID