Abstract: A write-behind computer program product is presented which allows writing data to multiple volumes of storage media associated with one or more server nodes in a distributed processing environment. A client application on a client node writes blocks of data to a first magnetic tape of a first server node until an end of physical storage of the first magnetic tape is reached, without having predetermined the size of the first magnetic storage. Thereafter, the writing of blocks of data is switched to a second magnetic tape, which may be on the first server node or a second server node in the system. The writing and switching process can repeat a number of times across multiple magnetic tapes. Data is written in a write-behind operation and the switching to a new magnetic tape occurs transparent to the client application, and without loss of data.

Abstract: A complex task is managed by controlling the independent, cooperating components that make up the complex task. This control includes, for instance, pre-run dynamic validation of the components of the complex task; programmatic determination of the proper order to start, stop or delete one or more of the components; post-run automatic recovery from a terminated component; and/or automatic collection of information regarding the independent, cooperating components, such that the overall status of the complex task is obtained and understood. The control is provided through a centralized mechanism that enables easy configuration, control and monitoring of the independent, cooperating components of a complex task.

Abstract: The present invention relates to a method for providing improved editing capability in a structure editor, and more particularly for syntax-directed editors. A set of methods provide an approach to selecting arbitrary nodes from within a tree, and using those arbitrarily selected groups of nodes in otherwise conventional editing operations such as move, copy, delete, collect, and the like. In syntax-directed editors, the present invention provides a way of maintaining syntax while these novel and highly flexible editing operations are performed.