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Published in:
An Introduction to Hibernate 5 Read chapter Read first chapter

2016 | OriginalPaper | Chapter

11. Filtering the Results of Searches

Authors : Joseph B. Ottinger, Jeff Linwood, Dave Minter

Published in: Beginning Hibernate

Publisher: Apress

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Abstract

Your application will often need to process only a subset of the data in the database tables. In these cases, you can create a Hibernate filter to eliminate the unwanted data. Filters provide a way for your application to limit the results of a query to data that passes the filter’s criteria. Filters are not a new concept — you can achieve much the same effect using SQL database views or, well, named queries — but Hibernate offers a centralized management system for them.

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previous chapter Advanced Queries Using Criteria
next chapter Leaving the Relational Database Behind: NoSQL
Footnotes
1
Query data are the methods that retrieved users would have to keep track of the specific criteria in question. To some degree, this is going to be necessary anyway, but we’d prefer the impact be as small as possible. Of course, there’s always the Criteria API we mentioned in Chapter 10…
 
2
In this, it’s like JNDI; you refer to a name in the filter definition, but the filter itself is defined elsewhere.
 
3
We could anticipate multiple database engines, but most environments use the same databases for testing and production, as they should. It’s a good habit to follow.
 
4
A better example might have been a constant status, instead of “name ends with a 1,” but the status is ideally parameterized as well. The data model would have been polluted without a contrived example, so that’s what we have.
 
Metadata
Title
Filtering the Results of Searches
Authors
Joseph B. Ottinger
Jeff Linwood
Dave Minter
Copyright Year
2016
Publisher
Apress
Book
Beginning Hibernate

Print ISBN: 978-1-4842-2318-5

Electronic ISBN: 978-1-4842-2319-2

Copyright Year: 2016

DOI
https://doi.org/10.1007/978-1-4842-2319-2_11

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