Blog: vlad mihalcea


220 blogs updated: 59 min. ago
The best way to map a many-to-many association with extra columns when using JPA and Hibernate
Introduction For a simple many-to-many database relationship, you can use the @ManyToMany JPA annotation and, therefore, hide the join table...
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26-07-2017 13:53:10 vlad mihalcea Advanced
How to extract change data events from MySQL to Kafka using Debezium
Introduction As previously explained, CDC (Change Data Capture) is one of the best ways to interconnect an OLTP database system with other s...
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19-07-2017 10:12:57 vlad mihalcea Advanced
Book Review – High Performance MySQL (3rd edition)
Introduction I either have time for reading or writing, but not both. Now that the first edition of High-Performance Java Persistence is don...
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17-07-2017 15:08:05 vlad mihalcea Advanced
What's new in JPA 2.2 – Stream the result of a Query execution
Introduction Now that the JPA 2.2 Review Ballot was approved, let's start analyzing some of the new additions to the standard which have bee...
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04-07-2017 09:15:36 vlad mihalcea Advanced
A beginner's guide to CDC (Change Data Capture)
Introduction In OLTP (Online Transaction Processing) systems, data is accessed and changed concurrently by multiple transactions and the dat...
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28-06-2017 09:15:45 vlad mihalcea Advanced
What's new in JPA 2.2 – Java 8 Date and Time Types
Introduction Now that the JPA 2.2 Review Ballot was approved, let's start analyzing some of the new additions to the standard which have bee...
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26-06-2017 10:29:23 vlad mihalcea Advanced
How to map Java and SQL arrays with JPA and Hibernate
Introduction hibernate custom Types allow you to map all sorts of database specific column types, like IP address, JSON columns, Bit sets or...
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21-06-2017 13:40:26 vlad mihalcea Advanced
The best way to map the @DiscriminatorColumn with JPA and Hibernate
Introduction As previously explained, the SINGLE_TABLE inheritance is the most efficient entity inheritance strategy. However, for JPQL quer...
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13-06-2017 09:30:48 vlad mihalcea Advanced
The best way to use entity inheritance with JPA and Hibernate
Introduction Recently, my friend Lukas Eder wrote the following message on Twitter: Just like in any OOP (Object-Oriented Programming) langu...
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06-06-2017 09:09:14 vlad mihalcea Advanced
The best way to map the SINGLE_TABLE inheritance with JPA and Hibernate
Introduction Java, like any other object-oriented programming language, makes heavy use of inheritance and polymorphism. Inheritance allows ...
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30-05-2017 09:13:27 vlad mihalcea Advanced


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