Home » Author Archives: Lukas Eder (page 3)

Author Archives: Lukas Eder

Lukas is a Java and SQL enthusiast developer. He created the Data Geekery GmbH. He is the creator of jOOQ, a comprehensive SQL library for Java, and he is blogging mostly about these three topics: Java, SQL and jOOQ.

How JPA 2.1 has become the new EJB 2.0

java-interview-questions-answers

Beauty lies in the eye of the beholder. So does “ease”: Learn more about SQL Result Set Mappings and handle your native query results with ease: http://t.co/WH4BTlClIP #JPA #Java #JavaEE — Thorben Janssen (@thjanssen123) April 15, 2015 Thorben writes very good and useful articles about JPA, and he’s recently started an excellent series about JPA 2.1’s new features. Among which: ...

Read More »

How to FlatMap a JDBC ResultSet with Java 8?

java-interview-questions-answers

You’re not into the functional mood yet? Then the title might not resonate with you – but the article will! Trust me. Essentially, we want this: +------+------+------+ | col1 | col2 | col3 | +------+------+------+ | A | B | C | row 1 | D | E | F | row 2 | G | H | I | ...

Read More »

How to Use Java 8 Streams to Swiftly Replace Elements in a List

java-logo

Imagine you have a list of items: List<String> books = Arrays.asList( "The Holy Cow: The Bovine Testament", "True Hip Hop", "Truth and Existence", "The Big Book of Green Design" ); (Don’t judge me. Books from this random book generator) Now you’d like to create a new list where the third item only is replaced by some new value: List<String> books ...

Read More »

Hack up a Simple JDBC ResultSet Cache Using jOOQ’s MockDataProvider

jooq-2-logo

Some queries shouldn’t hit the database all the time. When you query for master data (such as system settings, languages, translations, etc.), for instance, you may want to avoid sending the same silly query (and the results) over the wire all the time. For example: SELECT * FROM languages Most databases maintain buffer caches to accelerate these queries, so you ...

Read More »

jOOQ vs. Hibernate: When to Choose Which

jboss-hibernate-logo

Hibernate has become a de-facto standard in the Java ecosystem, and after the fact, also an actual JavaEE standard implementation if standards matter to you, and if you put the JCP on the same level with ISO, ANSI, IEEE, etc. This article does not intended to discuss standards, but visions. Hibernate shares JPA’s vision of ORM. jOOQ shares SQL’s vision ...

Read More »
Want to take your Java Skills to the next level?
Grab our programming books for FREE!
  • Save time by leveraging our field-tested solutions to common problems.
  • The books cover a wide range of topics, from JPA and JUnit, to JMeter and Android.
  • Each book comes as a standalone guide (with source code provided), so that you use it as reference.
Last Step ...

Where should we send the free eBooks?

Good Work!
To download the books, please verify your email address by following the instructions found on the email we just sent you.