#Neo4j Graph Database
For more information, visit: http://neo4j.org/
Travis build status:
For helping out improving Neo4j, check out the intro on contributing code.
At least as of Neo4j 1.7 and OpenJDK 1.7.0_147-icedtea,
OpenJDK 7 is unable to build Neo4j with
following error: java.lang.AssertionError: Missing type variable in where clause T.
Please use JDK 6 (OpenJDK is fine) to build Neo4j.
In addition, you need to allow enough memory to the Maven build process, for example by adding before launching Maven:
export JAVA_OPTS='-Xms384M -Xmx512M -XX:MaxPermSize=256M'
At least on OpenJDK 1.6.0_23, building Neo4j with the default settings throws misleading exceptions such as: (reproduced here for your information)
[ERROR] Specifications.java:[178,33] cannot find symbol
symbol : method and(java.lang.Iterable<java.lang.Object>)
location: class org.neo4j.helpers.Specifications
[ERROR] Iterables.java:[342,63] <FROM,TO>map(
org.neo4j.helpers.Function<? super FROM,? extends TO>,
java.lang.Iterable<FROM>) in org.neo4j.helpers.collection.Iterables
cannot be applied to (<anonymous org.neo4j.helpers.Function<java.lang.Iterable<T>,
java.util.Iterator<T>>>,java.lang.Iterable<java.lang.Object>)
git clone git://github.com/neo4j/community.git
mvn clean install
Neo4j is built using Maven - http://maven.apache.org/
These instructions are for OS X, with https://github.com/mxcl/homebrew installed.
prepare the repo:
rm -rf ~/.m2/repository/org/neo4j
mkdir build
cd build
build community:
git clone [email protected]:neo4j/community.git
cd community
git pull origin master
mvn clean install -Dmaven.test.skip=true
cd ..
build advanced
git clone [email protected]:neo4j/advanced.git
cd advanced
git pull origin master
mvn clean install -Dmaven.test.skip=true
cd ..
build enterprise
git clone [email protected]:neo4j/enterprise.git
cd enterprise
git pull origin master
mvn clean install -Dmaven.test.skip=true
cd ..
install the ASCIIDOC toolchain
brew install docbook asciidoc w3m fop graphviz && sudo docbook-register
build the manual
git clone [email protected]:neo4j/manual.git
cd manual
git pull origin master
mvn clean install -Dmaven.test.skip=true
cd ..
Build the standalone distributions
git clone [email protected]:neo4j/packaging.git
cd packaging
git pull origin master
cd standalone
mvn clean package
Neo4j is mounted in Eclipse using the M2E Eclipse Maven plugin, as "Import->Existing Maven Projects", see a vidoe by Paul De Velder: Neo4j development setup in Eclipse