So erstellen Sie die Kriterienabfrage für die angegebene SQL-Abfrage

Question

Ich erstelle eine ICriteria-Abfrage für diese äquivalente SQL-Abfrage.

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 

Aber ich bekomme sowieso nicht, dass, wie ich äquivalente Nhibernate ICriteria Abfrage generieren kann.

Dies ist Zahlungsklasse

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 
} 

Dies ist eine Rechnung Klasse

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 
} 

Dies ist eine Anzahlungsrechnung Klasse.

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

Anstatt die obige Abfrage zu LINQ oder HQL konvertieren, würde ich machte die Abfrage in eine Ansicht empfehlen, und dann NHibernate diese Ansicht abzufragen.

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; } 
} 

Abfrage

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

Answer 2

Nicht sicher nHibernate, aber tun Es diese umgeschriebene Abfragehilfe die gleiche Antwort bekommen und ist etwas, mit dem Sie leichter laufen können?

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