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Trevas - Persistent assignments

· One min read
Nicolas Laval
Making Sense - Developer

News​

Trevas 1.2.0 includes the persistent assignment support: ds1 <- ds;.

In Trevas, persistent datasets are represented as PersistentDataset.

Handle PersistentDataset​

Trevas datasets are represented as Dataset.

After running the Trevas engine, you can use persistent datasets with something like:

Bindings engineBindings = engine.getContext().getBindings(ScriptContext.ENGINE_SCOPE);
engineBindings.forEach((k, v) -> {
    if (v instanceof PersistentDataset) {
        fr.insee.vtl.model.Dataset ds = ((PersistentDataset) v).getDelegate();
        if (ds instanceof SparkDataset) {
            Dataset<Row> sparkDs = ((SparkDataset) ds).getSparkDataset();
            // Do what you want with sparkDs
        }
    }
});