Apache Marmotta

The Linked Data Platform is a work-in-progress standard for manipulating server shared resources via HTTP.

Apache Marmotta provides appropriate, compliant, working Java libraries that developers can use in working with resources marked as Linked Data.

Marmotta continues the work put in the now discontinued LMF (Linked Media Framework) project and allows developers to easily that local resources and share them in a Linked Data format.

This includes support for XML, CSV, Excel and various other tabular data formats, but developers can also parse and convert other formats to Linked Data, or even create Linked Data streams from scratch data.

Since the project can be quite cumbersome to use, lots of documentation is provided.

Features:

• Create Linked Data resources
• Edit Linked Data resources
• Delete Linked Data resources
• Parse Linked Data resources
• Versioning
• Support for SPARQL and LDPath querying
• Linked Data resource caching
• Security systems
• Apache Marmotta component parts:
• Apache Marmotta Platform (server implementation)
• LDClient (Linked Data client library)
• LDCache (caching component for LDClient)
• LDPath (a path-based query language)
• KiWi Triple Store (Sesame Sail-based relational database)

What is new in this release:

• Read-Write Linked Data
• Linked Data Platform (LDP 1.0 draft) compatible API
• SPARQL 1.1 and LDPath query languages
• Pluggable Sesame-based backends
• KiWi, a Sesame RDF triple store with transactions, versioning and rule-base reasoning
• Transparent Linked Data Caching
• Integrated basic security mechanisms
• Assortment of OpenRDF/Sesame tools

What is new in version 3.1.0-incubating:

• Read-Write Linked Data
• RDF triple store with transactions, versioning and rule-base
• reasoning
• SPARQL and LDPath query languages
• Transparent Linked Data Caching
• Integrated basic security mechanisms

What is new in version 3.0.0-incubating:

• Remove/adapt the first step of the "First steps" tutorial since it doesn't have an effect therefore confusing
• Improve SPARQL Update feedback when query fails
• SPARQL HTML results not working
• Tests failed when local port 8080 is not available
• LDPath Test Suite uses Solr
• Provide better file names when exporting resources
• Allow security profiles to build upon/depend on other profiles