Question 1

How to load JSON-LD contexts from a local file in Java?

Accepted Answer

Use the jarcache.json feature to map remote IRIs to classpath resources, or inject context strings directly via DocumentLoader.addInjectedDoc(). This allows offline processing without network calls, as detailed in the README.

Question 2

JSONLD-Java vs other JSON-LD libraries for Java?

Accepted Answer

JSONLD-Java is more mature and fully compliant with JSON-LD 1.0, but alternatives like Titanium might support newer specs. JSONLD-Java excels in RDF framework integration, while others could be lighter or more actively maintained.

Question 3

How to disable remote context loading for security?

Accepted Answer

Set the system property 'com.github.jsonldjava.disallowRemoteContextLoading' to 'true' using System.setProperty(). This prevents the library from fetching contexts over the network, as mentioned in the DocumentLoader section.

Question 4

Does JSONLD-Java support JSON-LD 1.1?

Accepted Answer

No, JSONLD-Java only implements the JSON-LD 1.0 specification. For JSON-LD 1.1 features, you'll need to look for alternative libraries or hope for future updates given the maintenance status.

Question 5

How to integrate JSONLD-Java with Apache Jena?

Accepted Answer

Use the separate jsonld-java-jena integration module, which provides RDFParser and TripleCallback implementations. The README outlines creating such modules for custom RDF library integrations.

Question 6

What's the best way to cache contexts for performance?

Accepted Answer

Leverage the built-in CachingHttpClient with configurable cache size, or preload contexts into a JAR using jarcache.json. The README explains setting max cache entries and object sizes to optimize memory usage.

JSON-LD

What is JSON-LD?

Overview

Use Cases

Best For

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Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions