Sun Microsystems, Inc.

Oracle America, Inc.

Frederick Vong

James Andrew Clark

Christopher Mark Eppstein

Ka-Leung Tong

Xue D Wu

A mechanism is disclosed for resolving conflicts between actions that target elements of a hierarchical data structure. Actions that are associated with criteria that are satisfied by an element of a target data structure are selected from among a plurality of specified actions. The selected actions are sorted by action type. Actions that conflict with a first-ordered action are determined. If the priority of the first-ordered action is the highest of the priorities of the conflicting actions, then the first-ordered action is performed and the other conflicting actions are canceled such that they are not performed relative to the element. Otherwise, the first-ordered action is canceled and processing continues with the next-ordered element. This conflict resolution technique may be applied to each of the remaining sorted actions in order, and for each element in the target data structure.

Resolving conflicts between actions that target elements of a hierarchical data structure

In accordance with one embodiment of the present invention, there is provided a technique for dynamically pipelined data migration. According to one aspect, it is determined that a source schema-conformant source data set is to be converted to a target schema-conformant target data set. A plurality of conversion mechanisms, which can be invoked in succession to convert the source data set into the target data set, is automatically determined. The plurality of conversion mechanisms comprises (a) an initial set of one or more conversion mechanisms that can be invoked in succession to convert the source data set to a final intermediate data set, and (b) a final conversion mechanism that converts the final intermediate data set to the target data set. Each conversion mechanism in the plurality of conversion mechanisms is successively invoked, in order, to convert the set of source data set to the target data set.

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Fremont, CA, United States of America

Frederick Vong