Multiple JDK in Mac OSX 10.10 Yosemite

It is very common for developers to setup multiple JRE environment. Some developers prefer using VM to install another version of JDK and keeping the default version in their local, but i prefer to install multiple JRE in my local machine. Here's how i do it on my Mac.

How To Remove Empty Field Value From Solr

This is the correct query to delete index from solr which have an empty title value. Example in XML format:

<delete><query>-title: [* TO *]</query></delete>


curl \
    -d "stream.body=<delete><query>-name: [* TO *]</query></delete>"