Like The Color
One of the most challenging projects I faced at work recently was to create a Apache SOLR index consisting of approx 15 million records. This index had been created once in the history of the company using a MySQL database and SOLR’s Data Import Handler (DIH). It had not been attempted since then because the original indexing process was time consuming (12-14 hours), required human supervision, and on failure had to be restarted from the very beginning. Continue reading »
Tagged with: java
I was the first one at work to get an Android phone. As word got around I have become the guy to go to when it comes to Android. I get asked questions about Android before they buy. I also get questions about Android after they’ve bought their new phone. One thing that people seem to appreciate is when I provide them with a list of apps to get them started.
Without further ado, here is a list of most of the apps I have on my phone. I’ve not included some of the apps (e.g., OEM pre-installed crap). Continue reading »
First I read the wiki entry http://wiki.cyanogenmod.com/index.php?title=Full_Update_Guide_-_Motorola_Droid As I was reading I noticed that there were no directions for OSX; only for Windows and Linux. It turns out that the flash recovery tools are not available for OSX. That means that I would have to do this from a virtual machine. Continue reading »
Tagged with: cyanogen
In the Google group Android Beginners I frequently see messages that ask what the error "r cannot be resolved" means in Eclipse.
Eclipse generates the file Continue reading »R.java for you using the aapt tool (Official Guide to the Android Asset Packaging Tool). R.java contains a mapping to all the resources your application will use. Note that you should have the Build Automatically option under the Project menu checked on.
Tagged with: java
I’ve wanted an iPhone for at least a year. Six to eight months ago I decided I was going to make the switch from Verizon to AT&T – just for the iPhone. Our Verizon contract expires next month. Now that December 8th is almost here I have begun counting the days. How exciting it will be to walk into the AT&T store and pick up my new iPhone.
I appreciate the quality of Apple products. From the beauty and elegance of the design to the simplicity of the user interface. It is obvious that they put great thought into the product as a whole. I wouldn’t call myself a “fanboy” but I’m pretty close. This is why it has come as a surprise that I have decided to go with the new Droid that Verizon just made available (http://phones.verizonwireless.com/motorola/droid/). Continue reading »
Setting up multiple cores in SOLR can seem like a daunting task but is pretty simple. You’ll need to create a Continue reading »solr.xml file, create a directory to contain the core specific infomration, and modify some configuration files.
I found this really cool plug in for Firefox called Ubiquity. It was created in the Mozilla Labs. You can see a video demo (vimeo) here. I might be writing more of these so I created a new Ubiquity page. Check it out.
I came across a situation today where Maven threw an OutOfMemoryException. I didn’t think the process would have taken that much memory but it clearly did. I was trying to deploy. I then tried it again but skipped the tests. No good. I found out that by setting the MAVEN_OPTS environment variable to something like -Xmx512m I was good to go.
Tagged with: java
I was recently asked in a comment how to compare 2 hash tables in Perl. Furthermore, the commenter mention that this would be use in a subroutine.
There is a module Data::Compare http://search.cpan.org/~dcantrell/Data-Compare-1.19/lib/Data/Compare.pm. I’ve never used this in any way other than to learn what it can do. From what I can tell it will not provide details. It will just tell you yes, the data structures are the same or no, the data structures are not the same. Continue reading »
I’ve collected a short list of commands I use for maven and thought I’d share.
Install to Local Repository Compile Test Classes, Do Not Run Tests
mvn -Dmaven.test.skip.exec install
Install to Local Repository Do Not Compile Test Classes, Do Not Run Tests
mvn -Dmaven.test.skip install
Generate Test Results in HTML Format (tests will be run)
mvn surefire-report:report
Generate Test Results in HTML Format (tests will not be run, source of reports will be last tests run)
mvn surefire-report:report-only
Run Specific Test Class
mvn -Dtest=MyTestClass test
Use Patterns to Run Specific Tests
mvn -Dtest=MyTest*lass test
Run Multiple Specific Test Classes
mvn -Dtest=UnitTestClass,Accep*TestClass test
View Dependency Tree: output is a mono-spaced tree views of all classes in the current artifact
mvn dependency:tree
Download Sources: Usually when using Maven only the binary version of your dependency are fetched from the repository. This will tell Maven to download the sources of your dependencies.
mvn [goal] -DdownloadSources=true
Download Java Docs: Same as with sources, Maven doesn’t usually grab the JavaDocs.
mvn [goal] -DdownloadJavadocs=true
Show the Effective POM: This is the final pom that is used to perform the goal.
mvn help:effective-pom
