Object-oriented interface for an index
US5809502A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Aug 9, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99945
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented method searches an index to locate records of a database using an object oriented interface. Each record has a unique address in the database. The index is organized as a plurality of index entries where each index entry including a word and an ordered list of locations where the word occurs in the database. The words represent a unique piece of information of the database. The index entries are ordered first according to the collating order of the words, and second according to the collating order of the locations of each associated word. A query is parsed into terms and operators. Each term is associated with a corresponding index entry, the operators relate the terms. A basic stream reader object is generated for each term of the query. The basic stream reader object sequentially reads the locations of the corresponding index entry to determine a target location. A compound stream reader object is generated for each operator. The compound stream reader object references the basic stream reader objects associated with the terms related by the operator. The compound stream reader object produces locations of words within a single record according to the oper…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.