Examples with RelationshipGroupPosition org.neo4j.kernel.impl.transaction.state.RelationshipGroupGetter.RelationshipGroupPosition used on opensource projects

Example 1 with RelationshipGroupPosition

use of org.neo4j.kernel.impl.transaction.state.RelationshipGroupGetter.RelationshipGroupPosition in project neo4j by neo4j.

the class RelationshipGroupGetterTest method shouldAbortLoadingGroupChainIfComeTooFar.

@Test
public void shouldAbortLoadingGroupChainIfComeTooFar() throws Exception {
    // GIVEN a node with relationship group chain 2-->4-->10-->23
    File dir = new File("dir");
    fs.get().mkdirs(dir);
    LogProvider logProvider = NullLogProvider.getInstance();
    StoreFactory storeFactory = new StoreFactory(dir, pageCache.getPageCache(fs.get()), fs.get(), logProvider);
    try (NeoStores stores = storeFactory.openNeoStores(true, StoreType.RELATIONSHIP_GROUP)) {
        RecordStore<RelationshipGroupRecord> store = spy(stores.getRelationshipGroupStore());
        RelationshipGroupRecord group_2 = group(0, 2);
        RelationshipGroupRecord group_4 = group(1, 4);
        RelationshipGroupRecord group_10 = group(2, 10);
        RelationshipGroupRecord group_23 = group(3, 23);
        link(group_2, group_4, group_10, group_23);
        store.updateRecord(group_2);
        store.updateRecord(group_4);
        store.updateRecord(group_10);
        store.updateRecord(group_23);
        RelationshipGroupGetter groupGetter = new RelationshipGroupGetter(store);
        NodeRecord node = new NodeRecord(0, true, group_2.getId(), -1);
        // WHEN trying to find relationship group 7
        RecordAccess<Long, RelationshipGroupRecord, Integer> access = new DirectRecordAccess<>(store, Loaders.relationshipGroupLoader(store));
        RelationshipGroupPosition result = groupGetter.getRelationshipGroup(node, 7, access);
        // THEN only groups 2, 4 and 10 should have been loaded
        InOrder verification = inOrder(store);
        verification.verify(store).getRecord(eq(group_2.getId()), any(RelationshipGroupRecord.class), any(RecordLoad.class));
        verification.verify(store).getRecord(eq(group_4.getId()), any(RelationshipGroupRecord.class), any(RecordLoad.class));
        verification.verify(store).getRecord(eq(group_10.getId()), any(RelationshipGroupRecord.class), any(RecordLoad.class));
        verification.verify(store, times(0)).getRecord(eq(group_23.getId()), any(RelationshipGroupRecord.class), any(RecordLoad.class));
        // it should also be reported as not found
        assertNull(result.group());
        // with group 4 as closes previous one
        assertEquals(group_4, result.closestPrevious().forReadingData());
    }
}