Blog: vlad mihalcea


203 blogs updated: 31 min. ago
How to return a Map result from a JPA or Hibernate query
Introduction In this article, I'm going to show you how you can return a Java Map result when executing a JPA query. I decided to write this...
12
21-01-2020 12:08:29 vlad mihalcea Advanced
Java and Database Newsletter, Issue 1
Introduction I started my newsletter in November 2015, and every time I was publishing a new article, I would send it to my newsletter subsc...
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17-01-2020 09:40:16 vlad mihalcea Advanced
Multidimensional array mapping with JPA and Hibernate
Introduction In this article, I'm going to present the best way to map a Java multidimensional array when using JPA and Hibernate. While one...
10
14-01-2020 16:58:47 vlad mihalcea Advanced
The best way to use a Hibernate ResultTransformer
Introduction In this article, I'm going to present the best way to use a Hibernate ResultTransformer so that you can customize the result se...
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07-01-2020 09:55:10 vlad mihalcea Advanced
The best way to prevent JPA and Hibernate performance issues
Introduction In this article, I'm going to present the best way to prevent performance issues when using JPA and Hibernate. Many years ago, ...
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23-12-2019 09:02:45 vlad mihalcea Advanced
How to migrate the hilo Hibernate identifier optimizer to the pooled strategy
Introduction In this article, I'm going to show you how to migrate from the legacy hilo sequence-based identifier optimizer to the pooled Hi...
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17-12-2019 11:27:44 vlad mihalcea Advanced
A beginner's guide to SQL CROSS JOIN
Introduction In this article, we are going to see how a CROSS JOIN works, and we will also make use of this SQL join type to build a poker c...
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12-12-2019 09:15:01 vlad mihalcea Advanced
How does the 2PL (Two-Phase Locking) algorithm work
Introduction The 2PL (Two-Phase Locking) algorithm is one of the oldest concurrency control mechanisms used by relational database systems t...
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02-12-2019 08:12:58 vlad mihalcea Advanced
Bulk update optimistic locking with JPA and Hibernate
Introduction In this article, we are going to see how we can adjust a bulk update statement so that it takes optimistic locking into conside...
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26-11-2019 11:46:17 vlad mihalcea Advanced
PostgreSQL trigger consistency check
Introduction In this article, we are going to see how to implement a non-trivial consistency check using a PostgreSQL INSERT and UPDATE trig...
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22-11-2019 09:24:08 vlad mihalcea Advanced


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