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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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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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3.发明授权Deferred reconstruction of objects and remote loading in a distributed system 失效对象的延迟重建和分布式系统中的远程加载公开(公告)号：US06253256B1
公开(公告)日：2001-06-26
申请号：US08950756
申请日：1997-10-15
IPC分类号： G06F1300
摘要： A method and system for transmitting objects in an object-oriented distributed system allows the reconstruction of objects and downloading of code associated with such object reconstruction to be deferred until it is needed by a program. The deferred reconstruction is accomplished by using a Java object called a “marshalled object,” which is a self-describing stream and which is a first-class entity in the system, meaning that it exists within a type system of a programming language and can be accessed and manipulated by instructions written in that language. Such an object can typically be produced by any object that can be passed from one address space to another, and it can be stored, passed to other objects, or used to reconstruct an object of the original type on demand. The reconstruction of an object is deferred until the code holding a marshalled object directly calls the creation of the object using the marshalled object. Any downloading of code is also deferred until the marshalled object is used to create a copy of the original object.
摘要翻译： 用于在面向对象的分布式系统中传送对象的方法和系统允许对对象的重建和与这样的对象重建相关联的代码的下载被推迟直到程序需要。 延迟重建通过使用称为“编组对象”的Java对象来实现，该对象是自描述流，并且是系统中的第一类实体，意味着它存在于编程语言的类型系统中，并且可以 通过用该语言编写的指令进行访问和操作。 这样的对象通常可以由可以从一个地址空间传递到另一个地址空间的任何对象来生成，并且可以将其存储，传递给其他对象，或用于根据需要重建原始类型的对象。 一个对象的重建被推迟，直到保持编组对象的代码直接使用编组对象来调用对象的创建。 代码的任何下载也被推迟到使用编组的对象来创建原始对象的副本。
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4.发明授权公开(公告)号：US06446070B1
公开(公告)日：2002-09-03
申请号：US09030840
申请日：1998-02-26
IPC分类号： G06F900
CPC分类号： G06F9/547 , G06F9/5044 , G06F9/505 , G06F9/52 , G06F2209/549 , Y10S707/99938
摘要： A homogeneous execution environment operates within a heterogeneous client-server network. A client selects a server and transmits a procedure call with parameters. In response, the system dynamically and securely downloads code to a compute server; invokes a generic compute method; executes the code on the compute server; and returns the results to the calling client method, preserving the result on the compute server if requested. This technique is efficient in that it does not require multiple copies of code to be downloaded or compiled since server byte-codes can be executed on each of the different systems. The code can be compiled once and downloaded as needed to the various servers as byte-codes and then executed.
摘要翻译： 均匀的执行环境在异构的客户端 - 服务器网络内运行。 客户端选择一个服务器并发送具有参数的过程调用。 作为响应，系统动态安全地将代码下载到计算服务器; 调用通用计算方法; 执行计算服务器上的代码; 并将结果返回给调用客户端方法，如果请求，则在计算服务器上保留结果。 这种技术是有效的，因为不需要下载或编译多个代码副本，因为可以在每个不同的系统上执行服务器字节码。 代码可以编译一次，并根据需要下载到各种服务器作为字节代码，然后执行。
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5.发明授权公开(公告)号：US07210148B2
公开(公告)日：2007-04-24
申请号：US09809201
申请日：2001-03-16
CPC分类号： G06F9/547 , G06F9/5044 , G06F9/505 , G06F9/52 , G06F2209/549 , Y10S707/99938
摘要： A homogeneous execution environment operates within a heterogeneous client-server network. A client selects a server and transmits a procedure call with parameters. In response, a server dynamically and securely downloads code to a compute server; invokes a generic compute method; executes the code on the compute server; and returns the results to the calling client method, preserving the result on the compute server if requested. This technique is efficient in that it does not require multiple copies of code to be downloaded or compiled since server byte-codes can be executed on each of the different systems, therefore downloading or compiling multiple copies of code can be avoided. The code can be compiled once and downloaded as needed to the various servers as byte-codes and then executed.
摘要翻译： 均匀的执行环境在异构的客户端 - 服务器网络内运行。 客户端选择一个服务器并发送具有参数的过程调用。 作为响应，服务器动态安全地将代码下载到计算服务器; 调用通用计算方法; 执行计算服务器上的代码; 并将结果返回给调用客户端方法，如果请求，则在计算服务器上保留结果。 这种技术是有效的，因为不需要下载或编译多个代码副本，因为可以在每个不同的系统上执行服务器字节码，因此可以避免下载或编译多个代码副本。 代码可以编译一次，并根据需要下载到各种服务器作为字节代码，然后执行。
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6.发明授权Deferred reconstruction of objects and remote loading for event notification in a distributed system 失效在分布式系统中延迟重建对象和远程加载事件通知公开(公告)号：US06272559B1
公开(公告)日：2001-08-07
申请号：US09044919
申请日：1998-03-20
IPC分类号： G06G1300
摘要： Event notification in a distributed system using an object maintained in serialized form, referred to as a marshalled object. For event notification, a machine registers with a device to receive notification of particular events within a network, and a marshalled object is transmitted with a registration request.
摘要翻译： 使用以序列化形式维护的对象的分布式系统中的事件通知，称为编组对象。 对于事件通知，机器向设备注册以接收网络内的特定事件的通知，并且通过注册请求发送编组的对象。
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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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8.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：US06578044B1
公开(公告)日：2003-06-10
申请号：US09044945
申请日：1998-03-20
IPC分类号： G06F1730
CPC分类号： G06F17/30607 , G06F9/4411 , Y10S707/99942 , Y10S707/99944
摘要： A database system wherein one or more entry databases store a plurality of entries. Each entry is of a given type that defines the fields of the entry. Each field contains or identifies an object with associated attributes or data. The type of each entry may further define behavior in the form of methods the entry can implement. An entry type which is a subtype of another inherits all fields and behavior of its super-type, and contains additional fields and/or defines new/modified behavior. Entries may be expressed in a Java™ programming language. The database system may further employ a search engine which allows queries to be made upon entries in the database. In one implementation, the queries include a read operation, a take operation, and a notify operation. Each query request includes a command indicating the type of operation, and a template which is an entry object having some or all of its fields set to specific values that must be matched exactly. Other fields of the template entry may be specified as wildcards, whose values do not matter. The search engine may further be configured to create an index for caching entries having characteristics which are commonly specified by queries. In one implementation, the databases may also store and perform operations on sets of entries. Additionally, associating attributes to the fields of entries allows the system to achieve type-safe attribute matching.
摘要翻译： 数据库系统，其中一个或多个条目数据库存储多个条目。 每个条目都是给定类型，用于定义条目的字段。 每个字段包含或标识具有关联属性或数据的对象。 每个条目的类型可以进一步以条目可以实现的方法的形式定义行为。 作为另一个子类型的条目类型将继承其超类型的所有字段和行为，并包含其他字段和/或定义新的/已修改的行为。 条目可以用Java（TM）编程语言表示。 数据库系统还可以采用允许在数据库中的条目进行查询的搜索引擎。 在一个实现中，查询包括读操作，执行操作和通知操作。 每个查询请求包括指示操作类型的命令，以及作为入口对象的模板，其中的一些或所有字段被设置为必须精确匹配的特定值。 模板条目的其他字段可以指定为通配符，其值无关紧要。 搜索引擎还可以被配置为创建用于缓存具有由查询通常指定的特征的条目的索引。 在一个实现中，数据库还可以存储和执行对条目集合的操作。 另外，将属性与条目的字段关联允许系统实现类型安全的属性匹配。
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10.发明授权SYSTEM AND METHOD FOR FACILITATING DYNAMIC LOADING OF “STUB” INFORMATION TO ENABLE A PROGRAM OPERATING IN ONE ADDRESS SPACE TO INVOKE PROCESSING OF A REMOTE METHOD OR PROCEDURE IN ANOTHER ADDRESS SPACE 失效用于促进“STUB”信息的动态加载的系统和方法，以使得在一个地址空间中操作的程序能够在其他地址空间中发送远程方法或程序的处理公开(公告)号：US06938263B2
公开(公告)日：2005-08-30
申请号：US08636706
申请日：1996-04-23
申请人： Ann M. Wollrath , James H. Waldo , Roger Riggs
发明人： Ann M. Wollrath , James H. Waldo , Roger Riggs
CPC分类号： G06F9/548
摘要： A stub retrieval and loading subsystem is disclosed for use in connection with a remote method invocation system. The stub retrieval and loading subsystem controls the retrieval and loading of a stub for a remote method, into an execution environment, to facilitate invocation of the remote method by a program executing in the execution environment. The stub retrieval subsystem includes a stub retriever for initiating a retrieval of the stub and stub loader for, when the stub is received by the stub retriever, loading the stub into the execution environment, thereby to make the stub available for use in remote invocation of the remote method. In one embodiment, the stub retrieval and loading subsystem effects the retrieval and loading for a program operating in one address space provided by one computer, of stub class instances to effect the remote invocation of methods which are provided by objects operating in another address space, which may be provided by the same computer or a different computer.
摘要翻译： 公开了一种与远程方法调用系统结合使用的存根检索和加载子系统。 存根检索和加载子系统将远程方法的存根的检索和加载控制到执行环境中，以便通过在执行环境中执行的程序来调用远程方法。 存根检索子系统包括一个存根检索器，用于启动存根和存根加载程序的检索，当存根接收器存根存根时，将存根加载到执行环境中，从而使存根可用于远程调用 远程方法。 在一个实施例中，存根检索和加载子系统对由一个计算机提供的存根类实例提供的一个地址空间中的程序进行检索和加载，以实现由在另一地址空间中操作的对象提供的方法的远程调用， 其可以由相同的计算机或不同的计算机提供。
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