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License: Apache License 2.0
J e n a G r a n d e Jena Grande is a collection of utilities, experiments and examples on how to use MapReduce, Pig, HBase or Giraph to process data in RDF format. RDF data model is a labelled directed multigraph. URIs are used to give globally unique names to nodes and labelled links (a.k.a. properties in the RDF lingo). A destination node (a.k.a. an object in an RDF statement) can be an attribute value (a.k.a. literal). Nodes can also be unnamed (a.k.a. blank nodes). Apache Jena is a Java library, currently in incubation, which can help you parsing, storing and querying RDF data. This is to be considered experimental and work in progress. If you want to share your experience on processing RDF data with any of the Hadoop ecosystem's projects, please, do fork this and send your pull requests. If the graph you need to process isn't RDF, some of the tricks shared here might be useful to you for other type of graphs. Requirements ------------ This is how to get Apache Giraph and install it in your Maven local repo: svn co https://svn.apache.org/repos/asf/giraph/trunk/ apache-giraph cd apache-giraph mvn -P hadoop_cdh4.1.2 install (see GIRAPH-418) ... Have fun! -- Paolo
Assume that i have two classes "car","jeep" ..."jeep" is sub class of
"car" ,"jeep" has sub classes and instances like speed,color,made
in,."car" also have properties "vehicle","model"..... MY question is :if i ask
in code by jena about "car" the result be all properties of "car"
,"jeep" and all instances,sub classes of "jeep" (only return related
data of "car" and all relation that connect with it) How can i do that in java by jena??????????
I get the following
from
mvn -version
Apache Maven 3.0.3 (r1075438; 2011-02-28 11:31:09-0600)
Maven home: /usr/share/maven
Java version: 1.6.0_35, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: en_US, platform encoding: MacRoman
OS name: "mac os x", version: "10.8.1", arch: "x86_64", family: "mac"
Looks like a missing pom file? Is this an apache issue or an issue with mvn configs for this project?
Any help appreciated ....
INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Jena Grande 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
Downloading: https://repository.apache.org/content/repositories/snapshots/org/apache/giraph/giraph/0.2-SNAPSHOT/maven-metadata.xml
Downloading: https://repository.apache.org/content/repositories/releases/org/apache/giraph/giraph/0.2-SNAPSHOT/maven-metadata.xml
Downloading: https://repository.apache.org/content/repositories/snapshots/org/apache/giraph/giraph/0.2-SNAPSHOT/giraph-0.2-SNAPSHOT.pom
Downloading: https://repository.apache.org/content/repositories/releases/org/apache/giraph/giraph/0.2-SNAPSHOT/giraph-0.2-SNAPSHOT.pom
[WARNING] The POM for org.apache.giraph:giraph:jar:0.2-SNAPSHOT is missing, no dependency information available
Downloading: https://repository.apache.org/content/repositories/snapshots/org/apache/giraph/giraph/0.2-SNAPSHOT/giraph-0.2-SNAPSHOT.jar
Downloading: https://repository.apache.org/content/repositories/releases/org/apache/giraph/giraph/0.2-SNAPSHOT/giraph-0.2-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.471s
[INFO] Finished at: Mon Sep 17 10:09:42 CDT 2012
[INFO] Final Memory: 7M/81M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project jena-grande: Could not resolve dependencies for project org.apache.jena:jena-grande:jar:0.1-SNAPSHOT: Could not find artifact org.apache.giraph:giraph:jar:0.2-SNAPSHOT in apache-snapshots-repo (https://repository.apache.org/content/repositories/snapshots/) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
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