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Storing hierarchical and unstructured data with Java Content Repository
Pytelka, Petr ; Pavlíčková, Jarmila (advisor) ; Feuerlicht, Jiří (referee)
This paper discusses the possibilities of storing hierarchical and unstructured data using standards JSR-170 and JSR-283 - "Content Repository for Java". Background of this paper is the graph theory. A definition of hierarchical data that is based on this theory is presented in the paper. Other methods of storing data such as the file-system, the database systems and the content management systems are discussed. The paper provides a detailed description of standard JSR-283 itself and the available features thereof. This is followed by a comparison of relation-, object-relational databases and the features of the individual techniques of object-relational mapping. Reference implementation JackRabbit is described in detail. It includes the description of the relevant API and its configuration. A case study dealing with the realization of the internal structure of a document management system is a part of this paper. Some performance tests were carried out on the reference implementation; the results thereof are presented in the paper. The conclusion of the work provides for a set of criteria to determine situations where it is appropriate to use a repository compatible with JSR-170/283 to store hierarchical and unstructured data, or where reference implementation JackRabbit can be used.

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