Using m2e v1.0, importing maven projects will cause errors such as:
maven-dependency-plugin(goals "copy-dependencies", "unpack") is not supported by m2e
Plugin execution not covered by lifecycle configuration:
The reason for these errors is described in the link.
A solution to this problem using the method set forth by the wiki is attached. The patch applies to the pom.xml in openjpa-parent.
This should solve any maven related problem. However, there still may be errors in the source of openjpa-kernel and openjpa-openbooks. The first is solved by adding target/generated-sources/javacc to the build path of openjpa-kernel. The second is done in the same way, except with target/generated-metamodel/java to the build path of openjpa-openbooks.