Querying an object-oriented data hierarchy using relational query languages
USRE46537E1 · kind E1 · reissue
1Cited by
9References
20Claims
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Key dates
| Filing date | Oct 8, 2015 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC —)General
Abstract
A novel system, computer readable storage medium and method for creating re-usable queries over complex data including hierarchies, trees and graphs is described. This is achieved by an object-oriented query language, where a class is a logical property of a data item, and inheritance is implication between such properties. Virtual method calls execute all relevant method implementations in most specific classes. Expressions can be multi-valued, thus avoiding the need for naming intermediate results. All constructs closely follow the syntax of mainstream object-oriented languages like Java.
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