公开(公告)号：US06463446B1

公开(公告)日：2002-10-08

申请号：US09044933

申请日：1998-03-20

申请人： Ann M. Wollrath ,  James H. Waldo ,  Peter C. Jones ,  Kenneth C.R.C. Arnold

发明人： Ann M. Wollrath ,  James H. Waldo ,  Peter C. Jones ,  Kenneth C.R.C. Arnold

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.

公开(公告)号：US06253256B1

公开(公告)日：2001-06-26

申请号：US08950756

申请日：1997-10-15

申请人： Ann M. Wollrath ,  James H. Waldo ,  Kenneth C. R. C. Arnold ,  Peter C. Jones

发明人： Ann M. Wollrath ,  James H. Waldo ,  Kenneth C. R. C. Arnold ,  Peter C. Jones

IPC分类号： G06F1300

CPC分类号： G06F9/542 ,  G06F9/548

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。

公开(公告)号：US06446070B1

公开(公告)日：2002-09-03

申请号：US09030840

申请日：1998-02-26

申请人： Kenneth C. R. C. Arnold ,  James H. Waldo ,  Ann M. Wollrath ,  Peter C. Jones

发明人： Kenneth C. R. C. Arnold ,  James H. Waldo ,  Ann M. Wollrath ,  Peter C. Jones

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。

公开(公告)号：US06957427B1

公开(公告)日：2005-10-18

申请号：US08950760

申请日：1997-10-15

申请人： Ann M. Wollrath ,  Peter C. Jones ,  James H. Waldo ,  Robert W. Scheifler

发明人： Ann M. Wollrath ,  Peter C. Jones ,  James H. Waldo ,  Robert W. Scheifler

IPC分类号： G06F9/44 ,  G06F9/46 ,  G06F17/00

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。

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。

公开(公告)号：US07210148B2

公开(公告)日：2007-04-24

申请号：US09809201

申请日：2001-03-16

申请人： Kenneth C. R. C. Arnold ,  James H. Waldo ,  Ann M. Wollrath ,  Peter C. Jones

发明人： Kenneth C. R. C. Arnold ,  James H. Waldo ,  Ann M. Wollrath ,  Peter C. Jones

IPC分类号： G06F9/44 ,  G06F15/16

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。

公开(公告)号：US06272559B1

公开(公告)日：2001-08-07

申请号：US09044919

申请日：1998-03-20

申请人： Peter C. Jones ,  Ann M. Wollrath ,  James H. Waldo ,  Kenneth C. R. C. Arnold

发明人： Peter C. Jones ,  Ann M. Wollrath ,  James H. Waldo ,  Kenneth C. R. C. Arnold

IPC分类号： G06G1300

CPC分类号： G06F9/542 ,  G06F9/548

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。

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。

公开(公告)号：US6134603A

公开(公告)日：2000-10-17

申请号：US45652

申请日：1998-03-20

申请人： Peter C. Jones ,  Ann M. Wollrath ,  Robert W. Scheifler

发明人： Peter C. Jones ,  Ann M. Wollrath ,  Robert W. Scheifler

IPC分类号： G06F9/46 ,  G06F13/00

CPC分类号： G06F9/548

摘要： A method and system is provided to uniquely identify a remote method to invoke on a server using a hash value computed from the method signature sent from the client to the server with the call request. When a client wishes to invoke a remote method located on a server, the client sends a hash value identifying the remote method to the server in the "remote method invocation" (RMI) call. In one implementation, this hash value is created by applying a hash function to the method string name and the parameter type list and possibly the return type. When the server receives the RMI call, the server identifies which method is being called using the received hash value. The server maintains a mapping of hash values to their associated remote methods located on the server and references the correct method using the hash value. Additionally, in one implementation, the server creates the mapping table dynamically when a remote object is created. The server identifies the methods implemented by the object and creates hash values for each method. These hash values are stored in a mapping table which is used to reference the remote methods.

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。