131 lines
3.5 KiB
C#
131 lines
3.5 KiB
C#
///////////////////////////////////////////////////////////
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// Bool.cs
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// Implementation of Class PartExistanceChecker
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// CSLA type: Read-only object
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// Created on: 24-Sept-2007
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// Object design: John
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// Coded: 24-Sept-2007
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///////////////////////////////////////////////////////////
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using System;
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using System.Data;
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using CSLA.Data;
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using GZTW.Data;
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using CSLA;
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using System.Threading;
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using CSLA.Security;
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using System.ComponentModel;
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namespace GZTW.AyaNova.BLL
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{
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//case 498
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/// <summary>
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///Confirms the presence of an Part
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///in the AyaNova database
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/// </summary>
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[Serializable, EditorBrowsable(EditorBrowsableState.Never)]
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internal class PartExistanceChecker : ReadOnlyBase
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{
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#region Attributes
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private bool mExists;
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#endregion
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#region Constructor
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/// <summary>
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/// Private constructor to prevent direct instantiation
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/// </summary>
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private PartExistanceChecker()
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{
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}
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#endregion
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#region Static methods
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internal static bool PartExists(Guid ID, string PartNumber)
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{
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return ((PartExistanceChecker)DataPortal.Fetch(new Criteria(ID, PartNumber))).mExists;
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}
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#endregion
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#region DAL DATA ACCESS
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///
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/// <param Bool="Criteria"></param>
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protected override void DataPortal_Fetch(object Criteria)
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{
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Criteria crit = (Criteria)Criteria;
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if (!string.IsNullOrEmpty(crit.PartNumber))
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{
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//case 1890
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string CaseInsensitiveQueryString = string.Empty;
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if(DBUtil.DB.DBType == DataBaseType.FireBird)
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{
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CaseInsensitiveQueryString = "SELECT AID FROM APART WHERE (Upper(APARTNUMBER) = Upper(@APARTNUMBER))";
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}
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else
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{
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//SQL server so for performance let SQL do the collating since it's easily set unlike firebird
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CaseInsensitiveQueryString = "SELECT AID FROM APART WHERE (APARTNUMBER = @APARTNUMBER)";
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}
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DBCommandWrapper dbCommandWrapper = DBUtil.DB.GetSqlStringCommandWrapper(CaseInsensitiveQueryString);
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dbCommandWrapper.AddInParameter("@APARTNUMBER", DbType.String, crit.PartNumber);
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if (DBUtil.ToGuid(DBUtil.DB.ExecuteScalar(dbCommandWrapper)) == Guid.Empty)
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this.mExists = false;
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else
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this.mExists = true;
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}
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else
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{
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if (DBUtil.ToGuid(DBUtil.GetScalarFromSQLString(
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"SELECT aID FROM aPart WHERE " +
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"(aID = @ID)", crit.ID
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)) == Guid.Empty)
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this.mExists = false;
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else
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this.mExists = true;
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}
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}
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#endregion
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#region criteria
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/// <summary>
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/// Criteria for identifying existing object
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/// </summary>
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[Serializable]
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private class Criteria
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{
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public Guid ID;
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public string PartNumber;
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public Criteria(Guid _ID, string _PartNumber)
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{
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ID = _ID;
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PartNumber = _PartNumber;
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}
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}
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#endregion
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}//end class
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}//end namespace GZTW.AyaNova.BLL |