Netiq Corporation

Hewlett-packard Company

Ching-Fa Hwang

Prayoon Phathayakorn

Kong Li

Her-Daw Che

Thomas Richard Kemp

Wei-Jen Chuang

Chyuan-Shiun Lin

Joel Tesler

A method is provided for signaling and acknowledging events associated with resource objects organized in a foldable object tree displayed by a GUI. When an event occurs on a resource object, an event indicator is placed not only on the resource object's icon in the object tree, but also on all the icons of the parent resource objects of that resource object to ensure that the event indicator is visible even when the object tree is folded. Events occurring on a resource object may be acknowledged by clicking on the resource object icon. When an event is acknowledged, the event indicator is removed not only from the resource object's icon but also from all of the icons of the parent resource objects for that resource object to ensure that the acknowledgment is always accurately reflected by the GUI display even the object tree is folded. The method further ensures that multiple events occurring on resource objects having a common parent resource object, are correctly reflected by visual indicators displayed by the GUI. A method is further provided for performing system management on a computer system. Finally, a method is provided for performing system management on a distributed system.

Event signaling in a foldable object tree

A method is provided for enabling a user to select and manipulate resource objects of a given type by selecting a program of a type compatible with the type of the resource objects via the graphical user interface of a computer system. This is achieved by first controlling a cursor control device of the computer system to drag a program icon onto a resource object icon. Then, a type of the program is compared to a type of the resource object to determine whether the program can manipulate the resource object. If the program can manipulate the resource object, a visual display of the resource object icon is modified to indicate to the user that the program can manipulate the resource object. In response to the visual display, the user has the option of either electing to manipulate the object using the program by dropping the program icon onto the resource object icon, or of terminating the operation by dragging the program icon away from the resource object icon. If the user elects to manipulate the resource object via the program, the program is executed by the computer system. A method is further provided for automatically comparing the type of the program to the type of a second resource object to determine whether the program can manipulate the second resource object, if the type of the program is not compatible with the type of the first resource object. A method is further provided for performing system management on a computer system. Finally, a method is provided for performing system management on a distributed system.

Selection, type matching and manipulation of resource objects by a

A method is provided for signalling and acknowledging events associated with resource objects organized in a foldable object tree displayed by a GUI. When an event occurs on a resource object, an event indicator is placed not only on the resource object's icon in the object tree, but also on all the icons of the parent resource objects of that resource object to ensure that the event indicator is visible even when the object tree is folded. Events occurring on a resource object may be acknowledged by clicking on the resource object icon. When an event is acknowledged, the event indicator is removed not only from the resource object's icon but also from all of the icons of the parent resource objects for that resource object to ensure that the acknowledgment is always accurately reflected by the GUI display even the object tree is folded. The method further ensures that multiple events occurring on resource objects having a common parent resource object, are correctly reflected by visual indicators displayed by the GUI. A method is further provided for performing system management on a computer system. Finally, a method is provided for performing system management on a distributed system.

The present invention provides an improved method and apparatus for performing database updates in a distributed system having an originating database stored in a server and a partial or complete copy of the database stored in a client. In one embodiment, a database update system includes a server having a database, a network, and a client having a storage and software for accessing the database over the network. The client maintains the last update time of each table stored in its storage. The server maintains the modification time as an integral field of each record in the database. The modification time of a record indicates the last time at which the record was modified in the database. The client software requests copies of all records of a table stored in the client's storage that have a modification time that is later than the last update time of the table. In another embodiment, the server also maintains a modification table that includes a record for each table in the database. Each record in the modification table includes a table modification time that indicates the last time at which any record in the associated table was modified in the database.

Database updates over a network

A method for transferring idempotent and non-idempotent requests (repeatable and non-repeatable requests respectively) over a network between two or more computer systems. The method includes sending a series of messages over a network to perform the request. The method defines several types of messages: a request message, a response message, a slow request message, and an acknowledge message. A slow request is handled by sending a slow request message in response to a retransmitted request message. When the computer system which received the request message has completed the request, a response message is sent to the requesting computer system. The requesting computer system then transmits an acknowledge message to acknowledge receipt of the response if the requesting computer system has received a slow request message even if the request was idempotent. The method reduces the amount of request message traffic on a network of the type where messages are subject to loss.

Growing community of inventors

Cupertino, CA, United States of America

Ching-Fa Hwang