Boots – shoes – and leggings
Patent
1995-01-04
1996-02-13
Kulik, Paul V.
Boots, shoes, and leggings
395575, 364285, 3642852, 3642821, 364DIG1, G06F 1730
Patent
active
054918197
ABSTRACT:
A system and method for performing merge transactions and non-failure rollback transactions between data structures without logging. The system comprises data structure objects (or consoles) comprising means for storing original attributes that define that object, means for storing apparent attributes merged into that object from the other object, means for storing a switch-to pointer, and means for storing a switch-chain pointer. The system may further comprise merging means for processing merge transactions, including means for switching the switch-to pointer of the second object to point to the first object, means for switching the switch-chain pointer of the first object to point to the second object to thereby form a switch chain, and means for logically ORing the apparent attributes of the first and second objects to thereby render the second object idle and permit the first object to control the attributes of the second object. The system may also include rollback means for rolling back a merge transaction, including means for removing the second object from the switch-chain, and means for logically ANDing the original attributes of the first object with the apparent attributes of the first object and storing the resulting group of attributes as new apparent attributes for the first object. Pluralities of objects may be merged into a single object as well.
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Chou Kevin
Fatzinger Peter A.
Leung Martin K.
Radhakrishnan Sockalingan
Cutter Lawrence D.
Ellcessor Larry J.
International Business Machines - Corporation
Kulik Paul V.
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