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Handling Huge Data Sets in J2EE/EJB 2.1 with a Page-by-Page Iterator Pattern Variant for CMP
Gitzel, Ralf
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Korthaus, Axel
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Mazloumi, Nima
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URL:
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https://static.aminer.org/pdf/PDF/000/585/174/hand...
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Weitere URL:
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http://citeseerx.ist.psu.edu/viewdoc/download?doi=...
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Dokumenttyp:
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Arbeitspapier
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Erscheinungsjahr:
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2002
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Titel einer Zeitschrift oder einer Reihe:
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Diskussionspapier / Lehrstuhl für Wirtschaftsinformatik III, Universität Mannheim
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Band/Volume:
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1-02
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Ort der Veröffentlichung:
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Mannheim
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Sprache der Veröffentlichung:
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Englisch
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Einrichtung:
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Fakultät für Betriebswirtschaftslehre > Wirtschaftsinformatik III (Schader 1991-2015, Em)
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Fachgebiet:
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004 Informatik
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Abstract:
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The J2EE platform with its server compo-
nent technology Enterprise JavaBeans (EJB) has be-
come widely adopted today. Services provided by J2EE
component containers, such as container-managed per-
sistence (CMP), facilitate the development of distributed
transactional applications and increase portability of
EJB components. Thanks to its intensive web support
through servlets and JSPs, the J2EE standard easily
allows web application designers to bring data stored in
EJB entity beans to the Internet as HTML pages.
A major problem, however, is the fact that often there
are too many instances of an entity bean to be presented
on a single HTML page. In our paper, we will compare
different solutions to this problem. As a starting point,
we will measure the performance of a naive CMP-based
approach and compare it with a bean-managed persis-
tence (BMP) approach structured in a similar way.
Since the use of CMP provides many benefits, but the
naive approach shows only poor performance, we finally
present a variant of Sun’s page-by-page iterator pat-
tern, which, as opposed to the original, does not rely on
JDBC but rather uses the new EJBQL features intro-
duced in the new EJB 2.1 final draft in order to provide
a feasible solution within the framework of CMP. In our
conclusion we also identify some possible improvements
to the J2EE standard based on our findings.
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