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公开(公告)号：US07089263B2
公开(公告)日：2006-08-08
申请号：US10141932
申请日：2002-05-10
IPC分类号： G06F17/30
CPC分类号： G06F17/30607 , G06F9/4411 , G06F9/465 , G06F9/547 , G06F9/548 , G06F12/0261 , H04L29/06 , H04L67/02 , H04L67/10 , H04L67/40 , H04L69/329 , Y10S707/99939 , Y10S707/99943 , Y10S707/99945 , Y10S707/99948 , Y10S707/99952
摘要： Use of a policy object for verification in a distributed system. A machine downloads a policy object containing a reference to code governing verification of data. The machine uses the reference to obtain the code and locally verify data or other information. As particular rules for the data change, the policy object may be updated to provide a reference to the code for the new rules when it is downloaded.
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公开(公告)号：US06957427B1
公开(公告)日：2005-10-18
申请号：US08950760
申请日：1997-10-15
CPC分类号： G06F9/548
摘要： A distributed computer system uses a single interface at the client site to handle calls to call both active and passive remote objects. Accordingly, the calling process does not need to be aware of distinctions between active and passive objects. Further, remote objects are aggregated into common groups of objects, thereby providing greater security between objects of disparate groups and efficiency between related objects of the same group. Preferably, different groups are run on different Java virtual machines.
摘要翻译： 分布式计算机系统在客户端站点使用单个接口来处理调用主动和被动远程对象的调用。 因此，调用过程不需要意识到主动对象和被动对象之间的区别。 此外，远程对象被聚合成公共对象组，从而在不同组的对象之间提供更高的安全性并且在相同组的相关对象之间提供效率。 优选地，不同的组在不同的Java虚拟机上运行。
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33.发明授权Method, apparatus, and product for leasing of group membership in a distributed system 失效在分布式系统中租用集团成员资格的方法，设备和产品公开(公告)号：US06925644B2
公开(公告)日：2005-08-02
申请号：US10355217
申请日：2003-01-31
CPC分类号： G06F9/5011 , G06F9/4411 , G06F9/465 , G06F9/52 , G06F9/547 , G06F12/0253 , G06F12/0261 , G06F17/30607 , H04L12/417 , H04L29/06 , H04L69/24 , Y10S707/99953 , Y10S707/99957
摘要： A system for leasing a group membership in a distributed processing system is provided. In accordance with this system, a remote object requests from an activation group a membership in the activation group for a period of time. Responsive to this request, the activation group determines an appropriate lease period during which time the remote object becomes a member of the activation group and runs in the same address space as other objects of the activation group.
摘要翻译： 提供了一种用于在分布式处理系统中租用组成员身份的系统。 根据该系统，远程对象从激活组请求激活组中的成员资格一段时间。 响应于此请求，激活组确定在该时间内远程对象成为激活组的成员并在与激活组的其他对象相同的地址空间中运行的适当租期。
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34.发明授权Apparatus and method for providing downloadable code for use in communicating with a device in a distributed system 失效用于提供可下载代码以用于与分布式系统中的设备进行通信的装置和方法公开(公告)号：US06560656B1
公开(公告)日：2003-05-06
申请号：US09044939
申请日：1998-03-20
申请人： Bryan O'Sullivan , Robert Scheifler , Peter C. Jones , Ann M. Wollrath , Kenneth C. R. C. Arnold , James H. Waldo
发明人： Bryan O'Sullivan , Robert Scheifler , Peter C. Jones , Ann M. Wollrath , Kenneth C. R. C. Arnold , James H. Waldo
IPC分类号： G06F1516
CPC分类号： G06F17/30607 , G06F9/4416 , G06F9/465 , H04L12/433 , H04L63/10
摘要： Downloading code for communicating with a device that joins a network. When the device joins the network, it transmits a multicast packet including a reference to code for use in communicating with the device. Receivers in the network use the reference to download the code for constructing objects to communicate with the device, and the receivers respond with a reference to a lookup service in the network. Using the reference from the receivers, the device registers with the lookup service.
摘要翻译： 下载与加入网络的设备进行通信的代码。 当设备加入网络时，它发送包括用于与设备进行通信的代码的引用的多播分组。 网络中的接收者使用引用来下载用于构建与设备进行通信的对象的代码，并且接收器通过对网络中的查找服务的引用进行响应。 使用接收器的引用，设备会向查找服务注册。
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公开(公告)号：US06463446B1
公开(公告)日：2002-10-08
申请号：US09044933
申请日：1998-03-20
IPC分类号： G06F1730
CPC分类号： G06F17/30607 , G06F9/542 , G06F9/547 , G06F12/0261 , G06F2209/544 , H04L12/417 , H04L12/433 , H04L29/06 , H04L67/10 , H04L67/16 , H04L67/26 , H04L67/40 , H04L69/24 , H04L69/329 , Y10S707/99954
摘要： In a distributed computing system, a first process may register interest in an event occurring in another address space or physical machine in such a way as to allow the subsequent notification of the event's occurrence to contain an object that includes methods that are to be run on receipt of the notification. When the notification is received, either by the first process or by some other entity designated by the first process to be the final point of notification, the methods may be executed as specified by the first process.
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36.发明授权Methods and systems for distributed failure detection and recovery using leasing 有权使用租赁分布式故障检测和恢复的方法和系统公开(公告)号：US06243716B1
公开(公告)日：2001-06-05
申请号：US09377491
申请日：1999-08-20
IPC分类号： G06F1500
CPC分类号： G06F12/0261 , G06F9/4411 , G06F9/465 , G06F9/5011 , G06F9/5016 , G06F9/5022 , G06F9/5055 , G06F9/5061 , G06F9/52 , G06F9/547 , G06F12/023 , G06F12/0253 , G06F17/30607 , H04L12/417 , H04L12/433 , H04L29/06 , H04L69/24 , Y10S707/99933 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953 , Y10S707/99957
摘要： A system for using a lease to detect a failure and to perform failure recovery is provided. In using this system, a client requests a lease from a server to utilize a resource managed by the server for a period of time. Responsive to the request, the server grants the lease, and the client continually requests renewal of the lease. If the client fails to renew the lease, the server detects that an error has occurred to the client. Similarly, if the server fails to respond to a renew request, the client detects that an error has occurred to the server. As part of the lease establishment, the client and server exchange failure-recovery routines that each invokes if the other experiences a failure.
摘要翻译： 提供了一种使用租约来检测故障并执行故障恢复的系统。 在使用该系统时，客户端请求从服务器租用一段时间内由服务器管理的资源。 响应请求，服务器授予租约，客户端不断要求续租。 如果客户端无法续订租约，则服务器检测到客户端发生错误。 类似地，如果服务器无法响应更新请求，客户端会检测到服务器发生错误。 作为租赁建立的一部分，客户端和服务器交换故障恢复例程，如果其他用户遇到故障，它们将调用。
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公开(公告)号：US06185611B2
公开(公告)日：2001-02-06
申请号：US09044931
申请日：1998-03-20
IPC分类号： G06F15177
CPC分类号： H04L67/16 , G06F9/465 , G06F9/505 , G06F9/5055 , G06F9/52 , G06F9/542 , G06F9/547 , G06F9/548 , G06F12/0261 , G06F17/30607 , G06F21/54 , G06F2209/462 , G06F2209/5015 , H04L12/2803 , H04L12/2805 , H04L12/2807 , H04L12/2809 , H04L12/40032 , H04L12/40169 , H04L12/403 , H04L12/417 , H04L29/06 , H04L67/10 , H04L67/26 , H04L67/2804 , H04L67/2842 , H04L67/40 , H04L67/42 , H04L69/24 , H04L69/329
摘要： An improved lookup service is provided that allows for the dynamic addition and deletion of services. This lookup service allows for the addition and deletion of services automatically, without user intervention. As a result, clients of the lookup service may continue using the lookup service and its associated services while the updates occur. Additionally, the lookup service provides a notification mechanism that can be used by clients to receive a notification when the lookup service is updated. By receiving such a notification, clients can avoid attempting to access a service that is no longer available and can make use of new services as soon as they are added to the lookup service.
摘要翻译： 提供了一种改进的查找服务，允许动态添加和删除服务。 此查找服务允许自动添加和删除服务，无需用户干预。 结果，查找服务的客户端可以在更新发生时继续使用查找服务及其相关联的服务。 另外，查找服务提供通知机制，客户端可以在更新查找服务时接收通知。 通过接收到这样的通知，客户端可以避免尝试访问不再可用的服务，并且一旦添加到查找服务就可以使用新服务。
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公开(公告)号：US6016500A
公开(公告)日：2000-01-18
申请号：US44916
申请日：1998-03-20
IPC分类号： G06F12/00 , G06F9/445 , G06F9/46 , G06F9/50 , G06F12/02 , G06F17/30 , H04L12/417 , H04L12/433 , H04L29/06 , G06F11/00
CPC分类号： G06F12/0261 , G06F12/023 , G06F12/0253 , G06F17/30607 , G06F9/4411 , G06F9/465 , G06F9/5011 , G06F9/5016 , G06F9/5022 , G06F9/5055 , G06F9/5061 , G06F9/52 , G06F9/547 , H04L12/417 , H04L12/433 , H04L29/06 , H04L69/24 , Y10S707/99933 , Y10S707/99944 , Y10S707/99952 , Y10S707/99953 , Y10S707/99957
摘要： A system for using a lease to detect a failure and to perform failure recovery is provided. In using this system, a client requests a lease from a server to utilize a resource managed by the server for a period of time. Responsive to the request, the server grants the lease, and the client continually requests renewal of the lease. If the client fails to renew the lease, the server detects that an error has occurred to the client. Similarly, if the server fails to respond to a renew request, the client detects that an error has occurred to the server. As part of the lease establishment, the client and server exchange failure-recovery routines that each invokes if the other experiences a failure.
摘要翻译： 提供了一种使用租约来检测故障并执行故障恢复的系统。 在使用该系统时，客户端请求从服务器租用一段时间内由服务器管理的资源。 响应请求，服务器授予租约，客户端不断要求续租。 如果客户端无法续订租约，则服务器检测到客户端发生错误。 类似地，如果服务器无法响应更新请求，客户端会检测到服务器发生错误。 作为租赁建立的一部分，客户端和服务器交换故障恢复例程，如果其他用户遇到故障，它们将调用。
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39.发明授权Method and apparatus for determining status of remote objects in a distributed system 失效用于确定分布式系统中远程对象状态的方法和装置公开(公告)号：US06598094B1
公开(公告)日：2003-07-22
申请号：US09044790
申请日：1998-03-20
申请人： Ann M. Wollrath , Peter C. Jones
发明人： Ann M. Wollrath , Peter C. Jones
IPC分类号： G06F946
CPC分类号： G06F12/0261
摘要： Systems consistent with the present invention a method and apparatus is provided for selectively supplying a state change associated with remote objects in a distributed system. The method involves registering a request from a computational entity to receive notification as to a state change associated with a remote object. Registration of a notification request causes the creation of a remote weak reference to the remote object including an identifier of a location of the remote object. Periodically, a request is sent to a location based on the identifier of the remote weak reference. When it is determined that a state change associated with the remote object has occurred, the registered computational entity is notified accordingly.
摘要翻译： 与本发明一致的系统提供了一种方法和装置，用于选择性地提供与分布式系统中的远程对象相关联的状态改变。 该方法涉及从计算实体注册请求以接收关于与远程对象相关联的状态改变的通知。 通知请求的注册导致创建远程对象的远程弱引用，包括远程对象的位置的标识符。 定期地，基于远程弱引用的标识符将请求发送到位置。 当确定与远程对象相关联的状态改变已经发生时，相应地通知注册的计算实体。
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公开(公告)号：US06487607B1
公开(公告)日：2002-11-26
申请号：US09044938
申请日：1998-03-20
申请人： Ann M. Wollrath , Peter C. Jones
发明人： Ann M. Wollrath , Peter C. Jones
IPC分类号： G06F1300
CPC分类号： G06F17/30607 , G06F9/52 , G06F9/547 , G06F9/548 , H04L12/433 , H04L67/42
摘要： Remote method invocation using a generic proxy class. A client machine transmits a call for invocation of a method of a remote object including an identifier for the method object. A server machine receives the identifier and uses generic code to invoke the method object and return an indication of the invoked method along with any relevant parameters.
摘要翻译： 使用通用代理类进行远程方法调用。 客户端机器发送用于调用包括方法对象的标识符的远程对象的方法的调用。 服务器机器接收标识符并使用通用代码来调用方法对象，并返回调用方法的指示以及任何相关参数。
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