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Upgrade ElasticSearch on Linux
Suppose you have a system with ElasticSearch server installed and need to upgrade it to a newer version. Below is a step-by-step guide explaining how you can do it, but note that it only works for ElasticSearch…
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Checkout a specific revision with Git
If you have a project and want to checkout specific revision (commit), you can do it as described below. 1) Clone the project: 2) Use the git describe command to get readable name for your commit.The git…
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Get total records count with GORM criteria
Assume you have a page with pagination that displays some objects table (selected from DB with GORM criteria) in your Grails application. If you want to know total number of possible results (as if there are no…
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Unit testing web flow in Grails
I’ve faced a problem with unit testing web flow controllers There’s an existings WebFlowUnitTestMixin for unit testing webflow in GDK, but no word on how to use it in the latest Grails 2.2.0 official documentation. All of…
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Native 0mq library version for akka-zeromq-2.0.x
I had a chance to try akka-zeromq module last month in order to implement solution for inter-service communication using Scala, Akka 2.0 and ZeroMQ. The module is built as extension to Akka and based on ZeroMQ bindings…
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How to create remote git branch in IntelliJ IDEA
To create remote Git branch in IntelliJ idea one should:
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Changing the Grails project configuration from within a plugin
This code snippet shows how to update project configuration settings from a Grails plugin executable script. The script changes the configuration by copying the settings from a default config file, placed in the plugin’s folder, to the…
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