EMC允许您将方法添加到某个类的单一实例或所有实例中。
The EMC allows you to add methods to either a single instance or all instances of a particular class.
单一实例指的是旨在让应用程序中一次只存在一个实例的类。
Singletons are classes that are designed to have only one instance existing at a time in an application.
这使您很难预测单一实例的实际延续时间，尤其是在负载很高的系统上。
This makes it hard to predict the actual duration of single instances, especially on a heavily loaded system.
大多数与之竞争的云解决方案都基于托管在虚拟机中的数据库的单一实例。
Most competing cloud solutions are based on single instances of a database hosted within a virtual machine.
这个运行时系统可以把多个对该服务端点接口的客户机调用分派到对于这个单一实例。
The run-time system may dispatch multiple client invocations to the service endpoint interface to this single instance.
总之，在应用程序中增加这个方法是很有用的，因为我们现在可以轻松地修改单一实例。
Having this method available can be helpful in the application in general because now the singleton becomes easily mutable.
计算机系统包括至少两个备份服务器，每个备份服务器包括在单一实例存储池中。
A computer system includes at least two backup servers, each backup server included in a single - instance storage pool.
在本文中，我们通过一个示例应用程序EasyOA讲解如何设计单一实例租户启用体系结构。
In this article, we will look at a sample application, EasyOA, to illustrate how to design a single instance multi-tenant enablement architecture.
到目前为止，示例都是使用Pipe Viewer的单一实例作为一对命令中的生成者或消费者。
So far, the examples shown employ a single instance of Pipe Viewer as the producer or consumer in a pair of commands.
有些方法返回MXBean的单一实例，有些方法返回 MXBean实例的强类型List。
Some of these methods return a single instance of the MXBean, and others return a strongly typed List of MXBean instances.
自然这个对象在这里不打算做太多，但是基于这行代码将为一个普通对象初始化一个单一实例。
Naturally this object isn't going to do much at this point, but it will initialize a single instance of a generic object based only on this line of code.
如果信息特定用于单一实例，那么本地缓存就没有问题，因为即使该实例停止工作，您始终可以重新创建它。
If information is specific to a single instance, a local cache is fine, as you can always re-create it if the instance stops functioning.
镜像尺寸较小感谢“单一实例”，在一个文件中出现的多个地点的硬盘您成像是唯一一次在储存的磁盘映像。
Image sizes are smaller thanks to "single instancing," where a file appearing in multiple locations within the hard disk you're imaging is only stored once in the disk image.
这就是为什么我选择了“单一实例”，虽然，我有我的服务器应用程序的单个实例为所有的客户端。
That is why I chose "single instance" and though that I would have a single instance of my server application for all the clients.
开发人员必须清楚，Struts创建的是Action的单一实例，并允许多个线程调用它的execute 。
Developers must be aware that Struts will create a single instance of the Action and allow multiple threads to invoke execute .
这个问题主要源于单一实例的过度使用，因为它会造成大量不可扩展的所谓godobjects的出现。
Much of this comes from the overuse of singletons, where many of these so called god objects can be impossible to extend from.
除非使用单一实例模式来设计设置包装类，否则单个应用程序中可能存在同一个应用程序设置类的多个实例。
Unless the Settings wrapper class is designed using the singleton pattern, there can be multiple instances of the same application Settings class in a single application.
Portlet服务编程模型是基于单一实例的，这意味着Portlet服务没有特定于Portlet实体的实例。
The portlet service programming model is singleton-based, which means that there is no portlet entity specific instance of a portlet service.
og61\dwsample目录中的startcat.bat文件显示在清单5 中，启动CatalogServer（即cat1）的单一实例。
This file, startcat.bat in the c:\og61\dwsample directory, is shown in Listing 5, and starts a single instance of the Catalog Server, called cat1.
实例序列图描述了两个实例之间可能发生的单一消息交换。
An instance sequence diagram describes a single possible exchange of messages between two instances.
关键是组件为应用程序的所有实例维护单一的数据模型。
The key is that the component maintains a single data model for all instances in an application.
它们还可以通过单一探测器进程支持服务器上安装的任意数量的数据库实例。
They can also support as many database instances as are installed on the server via a single probe process.
对于类似于 LPAR技术的情况而言，一个“节点”就是一个操作系统的实例，而且多个LPAR可以驻留在单一物理框架中。
To others familiar with LPAR technologies, a "node" is an instance of an OS, and several LPARs can reside on a single physical frame.
这对于单一对象实例不是什么大问题，但是循环遍历对象列表很容易导致执行大量查询。
This isn't much of an issue with single instances of objects, but iterating over lists of objects can easily cause a large number of queries to be executed.
单一页面的URL在页面创建时就被分配，但在页面更新或是用户选择自定义页面的实例时，URL会变化。
The URL for a single page is assigned when the page is created, but can change when the page is updated or when a user chooses to customize an instance of the page.
因为系统中的所有账户和客户都是零售商的，所以创建一个单一的Company实例并使其与所有账户相关联是不切实际的，因此该层次中省略了Company。
All accounts and customers in the system are the retailer's, so it's not practical to create a single instance of Company and associate it with all accounts, so Company is omitted at this level.
有一个特殊细节值得一提：每个处理单元分区都有一个单一的MessageProcessor实例。
One particular detail to note is that there is a single instance of a MessageProcessor for each processing unit partition.
有一个特殊细节值得一提：每个处理单元分区都有一个单一的MessageProcessor实例。
One particular detail to note is that there is a single instance of a MessageProcessor for each processing unit partition.
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