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61 lines
1.9 KiB
61 lines
1.9 KiB
using BO;
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namespace MaterialRequisition.Model
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{
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public class MaterialRequisitionRecordRpc : SyncToServerBase<MaterialRequisitionRecord>
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{
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// 定义一个静态变量来保存类的实例
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private static MaterialRequisitionRecordRpc uniqueInstance;
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// 定义一个标识确保线程同步
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private static readonly object locker = new object();
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// 定义私有构造函数，使外界不能创建该类实例
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private MaterialRequisitionRecordRpc()
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{
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}
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/// <summary>
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/// 定义公有方法提供一个全局访问点,同时你也可以定义公有属性来提供全局访问点
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/// </summary>
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/// <returns></returns>
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public static MaterialRequisitionRecordRpc GetInstance()
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{
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// 当第一个线程运行到这里时，此时会对locker对象 "加锁"，
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// 当第二个线程运行该方法时，首先检测到locker对象为"加锁"状态，该线程就会挂起等待第一个线程解锁
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// lock语句运行完之后（即线程运行完之后）会对该对象"解锁"
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// 双重锁定只需要一句判断就可以了
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if (uniqueInstance == null)
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{
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lock (locker)
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{
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// 如果类的实例不存在则创建，否则直接返回
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if (uniqueInstance == null)
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{
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uniqueInstance = new MaterialRequisitionRecordRpc();
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}
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}
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}
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return uniqueInstance;
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}
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protected override string InsertRpcUrl
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{
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get { return "/MainSystem/B3ClientService/Rpcs/BillRpc/MaterialRequisitionRecordRpc/Insert"; }
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}
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protected override string UpdateRpcUrl
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{
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get { return "/MainSystem/B3ClientService/Rpcs/BillRpc/MaterialRequisitionRecordRpc/Update"; }
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}
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protected override string DeleteRpcUrl
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{
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get { return "/MainSystem/B3ClientService/Rpcs/BillRpc/MaterialRequisitionRecordRpc/Delete"; }
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}
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}
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}
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