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SQL-260: Retrieve Policy via PolicyQuery (property)

This statement reads a single POLICY row by policy number. PolicyQuery is a protected property that only returns an unexecuted IQueryable<Policy>; the actual SQL executes at each downstream SingleOrDefault call in GenerateTasksService (payment, missing-payment, and expiring-judgment task generation). It is issued via NHibernate LINQ from Services/SAIF.Services/Collections/GenerateTasksService.cs.

Classification

Field Value
SQL ID SQL-260
Operation type Read
Execution method ORM (NHibernate LINQ)
Database Oracle
Schema [unqualified]**
Command type N/A (ORM-generated)
Business object GenerateTasksService
Criteria property N/A — ORM
Lifecycle method PolicyQuery (property); consumed at L105, L163, L238

Parameters

Parameter Direction Type Max length Description
:PolicyNum Input long N/A Policy number (...PolicyNum.Value at each consumer: selectedPayment.Case, missingPayment.Case, expiringJudgment)

Tables

Table Access Columns used
POLICY SELECT POLICY_NUM, POLICY_NAME, LEGAL_NAME, SECURE_POLICY_CODE, OFFICE_CODE, ACCOUNT_NUM, POLICY_STATUS_CODE, MARKET_TYPE_CODE, POLICY_RELATIONSHIP_POLICY_NUM, POLICY_RELATIONSHIP_CODE, customer_service_team_code, ENTITY_CODE, TRADING_SEQ_NUM, RATE_ACCOUNT, AGENT_NUM

LINQ statement

Source: Services/SAIF.Services/Collections/GenerateTasksService.cs:27

// Services/SAIF.Services/Collections/GenerateTasksService.cs:27-33
protected IQueryable<SAIF.Data.Model.Policies.Policy> PolicyQuery
{
    get
    {
        return UnitOfWork.GetRepository<SAIF.Data.Model.Policies.Policy>().Query();
    }
}

// Services/SAIF.Services/Collections/GenerateTasksService.cs:105
? PolicyQuery.SingleOrDefault(x => x.PolicyNumber == selectedPayment.Case.PolicyNum.Value)

// Services/SAIF.Services/Collections/GenerateTasksService.cs:163
? PolicyQuery.SingleOrDefault(x => x.PolicyNumber == missingPayment.Case.PolicyNum.Value)

// Services/SAIF.Services/Collections/GenerateTasksService.cs:238
? PolicyQuery.SingleOrDefault(x => x.PolicyNumber == expiringJudgment.PolicyNum.Value)

Sample SQL

Inferred SQL: This SQL was inferred from the LINQ statement above and the NHibernate mappings. It is not concrete SQL from source code; NHibernate generates the executed statement at runtime, so aliases, column order, join syntax, and bind-parameter names may differ.

-- Inferred from LINQ (NHibernate mapping translation); not concrete SQL
SELECT
  P.POLICY_NUM,
  P.POLICY_NAME,
  P.LEGAL_NAME,
  P.SECURE_POLICY_CODE,
  P.OFFICE_CODE,
  P.ACCOUNT_NUM,
  P.POLICY_STATUS_CODE,
  P.MARKET_TYPE_CODE,
  P.POLICY_RELATIONSHIP_POLICY_NUM,
  P.POLICY_RELATIONSHIP_CODE,
  P.customer_service_team_code,
  P.ENTITY_CODE,
  P.TRADING_SEQ_NUM,
  P.RATE_ACCOUNT,
  P.AGENT_NUM
FROM POLICY P
WHERE P.POLICY_NUM = :PolicyNum
-- NHibernate expects at most one row

Translation notes: - The cited line (L31) only returns an unexecuted IQueryable<Policy>; no SQL runs there. The statement executes at each downstream SingleOrDefault (L105, L163, L238), all with the same shape. - Single/SingleOrDefault → no row limit; NHibernate throws if more than one row is returned. - Expressions that do not reference the lambda parameter (captured locals, members of already-loaded objects, Convert.ToInt64(...), DateTime.Today) are evaluated client-side by NHibernate's partial evaluator and bound as a single parameter value. - OFFICE_CODE is mapped both as Map(OfficeCode) (PolicyMap.cs:18) and References(Office) (PolicyMap.cs:26); it is selected once. All other References contribute their FK column only; HasMany collections (Periods, DbaNames, OscPolicies, SubmissionPolicies, TeamFunctions, BusinessAffiliates) are lazy and not selected.

Operations and processes

Sources

  • Services/SAIF.Services/Collections/GenerateTasksService.cs (L31)