Documentation on how to use Xodus Query?

Question

Hello is there a documentation on how to

<dependency>
    <groupId>org.jetbrains.xodus</groupId>
    <artifactId>xodus-query</artifactId>
    <version>1.2.3</version>
</dependency>

Specifically, the UniqueKeyIndicesEngine to index Entities. And for example this code:

getEntityStore().executeInTransaction(new StoreTransactionalExecutable() {
            @Override
            public void execute(@NotNull StoreTransaction txn) {
                final PersistentStoreTransaction t = (PersistentStoreTransaction) txn;
                entity1.setProperty("column0", 1);
                entity1.setProperty("column1", "o");
                ukiEngine.deleteUniqueKey(t, new TestIndex("column0", "column1"), Arrays.asList((Comparable) Integer.valueOf(0), "oo"));
                ukiEngine.insertUniqueKey(t, new TestIndex("column0", "column1"), Arrays.asList((Comparable) Integer.valueOf(1), "o"), entity1);
            }
        });

Answer 1

Any functionality from xodus-query is auxiliary for the Xodus-DNQ project, and xodus-query module would finally be moved to Xodus-DNQ. Please take a closer look at Xodus-DNQ, as it offers schema definition, fields' indices, constraints, etc.