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Framework for object-oriented interface to record file data

  • US 6,018,743 A
  • Filed: 10/04/1996
  • Issued: 01/25/2000
  • Est. Priority Date: 10/04/1996
  • Status: Expired due to Fees
First Claim
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1. A method of operating a computer system that provides an object-oriented programming environment, having one or more datastores that contain record-oriented data files, and communicating with one or more users executing object-oriented application programs for manipulation of persistent data objects corresponding to the data files, the method comprising the steps of:

  • (a) receiving a request for manipulation of a persistent data object from one of at least two incompatible persistent object service systems utilizing different data protocols and class hierarchies;

    (b) associating each persistent data object with a data file by(1) associating each instance of a persistent data object with a persistent object identifier;

    (2) associating each instance of the persistent data object with only one data file in a datastore, such that each instance of an attribute of the data object is mapped to one associated data file, and(3) defining within each persistent object identifier a data identifier that is associated with either a record number or a key within the data file associated with the persistent object identifier; and

    (c) instructing the datastore to alter the information within a selected data file through the associated instance of the persistent data object.

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