IDEA is now open source! The free community edition at http://www.jetbrains.org is all you need for Cassandra development. (You don't need J2EE or Web tools.)

Setup Cassandra as a Project (C* 2.1 and newer)

Since 2.1.5, there is a new ant target generate-idea-files

  1. Clone Cassandra from apache's Git repository.

for trunk branch (JDK7 required) 

 
 git clone git://git.apache.org/cassandra.git

for cassandra-2.1 branch 

 git clone –b cassandra-2.1 git://git.apache.org/cassandra.git

2. Once git has finished cloning the repository, generate the eclipse files using ant. 

 ant generate-idea-files

3. Start IDEA 4. Just open the IDEA project from the checked out Cassandra directory using the menu item Open in IDEA's File menu

The project generated by the ant task generate-idea-files contains nearly everything you need to debug Cassandra and execute unit tests.

  • Run/debug defaults for JUnit
  • Run/debug configuration for Cassandra daemon
  • License header for Java source files
  • Cassandra code style
  • Inspections

Setup Cassandra as a Project (C* 1.2, 2.0, <= 2.1.4)

  • The following applies to Cassandra sources for versions 1.2.x, 2.0.x and up to 2.1.4*

To quickly import Cassandra into IntelliJ and start coding simply:

  1. Run "ant generate-eclipse-files" 2. File -> Import Project

(The IntelliJ Eclipse plugin must be enabled.)

If you want IDEA to handle more of the environment for you, keep reading.

  1. Clone Cassandra from apache's Git repository.

for trunk branch (JDK7 required) 

 
 git clone git://git.apache.org/cassandra.git

for cassandra-1.2 branch 

 git clone –b cassandra-1.2 git://git.apache.org/cassandra.git

2. Once git has finished cloning the repository, generate the eclipse files using ant. 

 ant generate-eclipse-files

3. Start IDEA 4. Click Import Project. 5. Navigate to the newly cloned cassandra directory and click OK.

6. Select Import project from external model, pick Eclipse then click OK.

7. Select Next - make sure that Link created IntelliJ IDEA modules to Eclipse project files is checked

8. Select cassandra and click Finish. You now have a successfully imported Cassandra project.


Building & Testing Cassandra via Ant

To build Cassandra we need to import ant's build file, aka build.xml.

  1. Select the Ant Build tab from IDEA (right hand side in the screen shot below). 2. Select the + (Add). 3. Navigate to Cassandra's root directory (based on the tutorial this would be ~/workspace/cassandra/) and select build.xml. 4. Click OK.
    The different ant targets will now be available for execution.


Building / Testing Cassandra via Ant
Once the ant build file is added to IDEA you can compile cassandra via the build target. The unit tests are located under the test target.
To run a target select it and then click .

Create a RUN configuration

  1. Select Run > Edit Configurations... and click the + (Add New Configuration).
    2. Populate the config with the following:


 Main class: org.apache.cassandra.service.CassandraDaemon
 VM options:
   -Dcassandra-foreground=yes
   -Dcassandra.config=file://$PROJECT_DIR$/conf/cassandra.yaml
   -Dcassandra.storagedir=$PROJECT_DIR$/data
   -Dlogback.configurationFile=file://$PROJECT_DIR$/conf/logback.xml
   -Dcassandra.logdir=$PROJECT_DIR$/data/logs
   -ea
   -Xmx1G


3. Click OK.


Verify Cassandra is running via IDEA

If everything is configured correctly, when you run Cassandra (via or Run > Run...) logs should appear in the IDEA console.

Once cassandra is started, you can also check it's up and running by connecting to it via cqlsh

 $ ./cqlsh 
 Connected to Test Cluster at localhost:9160.
 [cqlsh 3.1.8 | Cassandra 1.2.11-SNAPSHOT | CQL spec 3.0.0 | Thrift protocol 19.36.1]
 Use HELP for help.
 cqlsh>

Notes

Java 7 since Cassandra 2.0

Dont forget to update IntelliJ to use JDK7 or later for Cassandra versions greater than Cassandra 1.2

https://c.statcounter.com/9397521/0/fe557aad/1/|stats

Link IDEA to .classpath

If you did not check Link created IntelliJ IDEA modules to Eclipse project files in the project import dialog, you can change that later and IDEA will automatically use changes if .classpath file is regenerated using

ant generate-eclipse-files

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