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Execute Custom queries in Activiti

(This will probably end up in the user guide of the Activiti 5.15 release, but I wanted to share it already) The Activiti API allows for interacting with the database using a high level ...
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sun.misc.Unsafe and off heap memory

The class sun.misc.Unsafe allows you to many of the things you shouldn’t be able to do in Java, but are still useful in very specific cases. It is to be avoided 99% of the time, ...
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Using an Embedded Tomcat with Maven tomcat plugin

When developing a java web application using the Eclipse WTP, we need to have an installation of tomcat in the machine in order to execute the application. If you are using Maven on ...
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Testing Spring components with Mockito

Be able to unit test your spring components without the need of loading the full spring-context with its ad-hoc test configurations it is ,in my opinion, a great advantage because it’s ...
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How to estimate memory consumption?

This story goes back at least a decade, when I was first approached by a PHB with a question “How big servers are we going to need to buy for our production deployment”. The new ...
gradle-logo

Specifying Gradle Build Properties

Properties are a valuable tool for easily customizing Gradle builds and the Gradle environment. I demonstrate some of these approaches for specifying properties used in a Gradle build ...
primefaces-logo

Primefaces DataTable Lazy Loading with pagination, filtering and sorting using JPA Criteria, @ViewScoped

Primefaces datatable lazy pagination works, but I was really frustrated after searching for a full example using Criteria in the web. So I’ve mixed solutions fromhttp://stackoverflow.com/questions/13972193/how-to-query-data-for-primefaces-datatable-with-lazy-loading-and-pagination http://www.primefaces.org/showcase/ui/datatableLazy.jsf http://www.javacodegeeks.com/2012/04/lazy-jsf-primefaces-datatable.htmlTo ...
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The Gradle Interface: Gradle Build Metadata

As I’ve shown in previous posts such as “Identifying Gradle Conventions” and “Evolving Gradle Build from Ant Build: Importing Ant Build File“, significant ...
java-logo

Java 8 Friday Goodies: Lambdas and XML

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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Java 8 Friday Goodies: java.io finally rocks!

At Data Geekery, we love Java. And as we’re really into jOOQ’s fluent API and query DSL, we’re absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged ...
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