Enterprise Java
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JPA 2.1 criteria delete/update and temporary tables in Hibernate
Since JPA version 2.0 the EntityManager offers the method getCriteriaBuilder() to dynamically build select queries without the need of string…
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Calculate PageRanks with Apache Hadoop
Currently I am following the Coursera training ‘Mining Massive Datasets‘. I have been interested in MapReduce and Apache Hadoop for…
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Database Migrations in Java EE using Flyway
Database schema of any Java EE application evolves along with business logic. This makes database migrations an important of any…
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JBoss Fuse – Some less known trick
TL;DR expose java static calls as Karaf shell native commands override OSGi Headers at deploy time override OSGi Headers after…
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MySQL as Kubernetes Service, Access from WildFly Pod
Java EE 7 and WildFly on Kubernetes using Vagrant (Tech Tip #71) explained how to run a trivial Java EE…
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A JAXB Nuance: String Versus Enum from Enumerated Restricted XSD String
Although Java Architecture for XML Binding (JAXB) is fairly easy to use in nominal cases (especially since Java SE 6),…
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How to: Refine Hive ZooKeeper Lock Manager Implementation
Hive has been using ZooKeeper as distributed lock manager to support concurrency in HiveServer2. The ZooKeeper-based lock manager works fine…
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How to secure Jersey REST services with Spring Security and Basic authentication
In my previous blog post, Quick way to check if the REST API is alive – GET details from Manifest…
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How to Analyze Highly Dynamic Datasets with Apache Drill
Today’s data is dynamic and application-driven. The growth of a new era of business applications driven by industry trends such…
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