Examples with MappingContext org.neo4j.ogm.context.MappingContext used on opensource projects

Example 6 with MappingContext

use of org.neo4j.ogm.context.MappingContext in project neo4j-ogm by neo4j.

the class MergeWithPrimaryIndexTests method setUpMapper.

@Before
public void setUpMapper() {
    mappingContext = new MappingContext(mappingMetadata);
    this.mapper = new EntityGraphMapper(mappingMetadata, mappingContext);
}

Example 7 with MappingContext

use of org.neo4j.ogm.context.MappingContext in project neo4j-ogm by neo4j.

the class CyclicStructureTest method mapAndCompile.

private static Compiler mapAndCompile(Neo4jSession session, Object object, int depth) {
    final MetaData metaData = session.metaData();
    final MappingContext mappingContext = new MappingContext(metaData);
    EntityMapper mapper = new EntityGraphMapper(metaData, mappingContext);
    CompileContext context = mapper.map(object, depth);
    Compiler compiler = context.getCompiler();
    compiler.useStatementFactory(new RowStatementFactory());
    return compiler;
}

Example 8 with MappingContext

use of org.neo4j.ogm.context.MappingContext in project neo4j-ogm by neo4j.

the class DeleteDelegate method deleteOneOrMoreObjects.

// TODO : this is being done in multiple requests at the moment, one per object. Why not put them in a single request?
private void deleteOneOrMoreObjects(List<?> objects, Set<Object> neighbours) {
    Set<Object> notified = new HashSet<>();
    if (session.eventsEnabled()) {
        for (Object affectedObject : neighbours) {
            if (!notified.contains(affectedObject)) {
                session.notifyListeners(new PersistenceEvent(affectedObject, Event.TYPE.PRE_SAVE));
                notified.add(affectedObject);
            }
        }
    }
    for (Object object : objects) {
        MetaData metaData = session.metaData();
        ClassInfo classInfo = metaData.classInfo(object);
        if (classInfo == null) {
            session.warn(object.getClass().getName() + " is not an instance of a persistable class");
        } else {
            MappingContext mappingContext = session.context();
            Long id = mappingContext.optionalNativeId(object).filter(possibleId -> possibleId >= 0).orElseGet(() -> {
                session.warn(String.format("Instance of class %s has to be reloaded to be deleted. This can happen if the session has " + "been cleared between loading and deleting or using an object from a different transaction.", object.getClass()));
                return classInfo.getPrimaryIndexOrIdReader().apply(object).map(primaryIndexOrId -> session.load(object.getClass(), (Serializable) primaryIndexOrId)).flatMap(reloadedObject -> mappingContext.optionalNativeId(reloadedObject)).orElse(-1L);
            });
            if (id >= 0) {
                Statement request = getDeleteStatement(object, id, classInfo);
                if (session.eventsEnabled() && !notified.contains(object)) {
                    session.notifyListeners(new PersistenceEvent(object, Event.TYPE.PRE_DELETE));
                    notified.add(object);
                }
                RowModelRequest query = new DefaultRowModelRequest(request.getStatement(), request.getParameters());
                session.doInTransaction(() -> {
                    try (Response<RowModel> response = session.requestHandler().execute(query)) {
                        if (request.optimisticLockingConfig().isPresent()) {
                            List<RowModel> rowModels = response.toList();
                            session.optimisticLockingChecker().checkResultsCount(rowModels, request);
                        }
                        if (metaData.isRelationshipEntity(classInfo.name())) {
                            session.detachRelationshipEntity(id);
                        } else {
                            session.detachNodeEntity(id);
                        }
                        // enabled in the first place.
                        if (notified.contains(object)) {
                            session.notifyListeners(new PersistenceEvent(object, Event.TYPE.POST_DELETE));
                        }
                    }
                }, Transaction.Type.READ_WRITE);
            }
        }
    }
    if (session.eventsEnabled()) {
        for (Object affectedObject : neighbours) {
            if (notified.contains(affectedObject)) {
                session.notifyListeners(new PersistenceEvent(affectedObject, Event.TYPE.POST_SAVE));
            }
        }
    }
}

Example 9 with MappingContext

use of org.neo4j.ogm.context.MappingContext in project neo4j-ogm by neo4j.

the class ElectionTest method shouldAllowVoterToChangeHerMind.

@Test
public void shouldAllowVoterToChangeHerMind() {
    Candidate a = new Candidate("A");
    Candidate b = new Candidate("B");
    Voter v = new Voter("V");
    v.candidateVotedFor = b;
    session.save(a);
    session.save(v);
    MappingContext context = ((Neo4jSession) session).context();
    assertThat(context.containsRelationship(new MappedRelationship(v.getId(), "CANDIDATE_VOTED_FOR", b.getId(), null, Voter.class, Candidate.class))).isTrue();
    session.clear();
    a = session.load(Candidate.class, a.getId());
    v = session.load(Voter.class, v.getId());
    assertThat(v.candidateVotedFor.getId()).isEqualTo(b.getId());
    assertThat(context.containsRelationship(new MappedRelationship(v.getId(), "CANDIDATE_VOTED_FOR", b.getId(), null, Voter.class, Candidate.class))).isTrue();
    v.candidateVotedFor = a;
    session.save(v);
    session.clear();
    session.load(Candidate.class, b.getId());
    session.load(Voter.class, v.getId());
    assertThat(v.candidateVotedFor.getId()).isEqualTo(a.getId());
    assertThat(context.containsRelationship(new MappedRelationship(v.getId(), "CANDIDATE_VOTED_FOR", a.getId(), null, Voter.class, Candidate.class))).isTrue();
    assertThat(context.containsRelationship(new MappedRelationship(v.getId(), "CANDIDATE_VOTED_FOR", b.getId(), null, Voter.class, Candidate.class))).isFalse();
    session.clear();
}

Example 10 with MappingContext

use of org.neo4j.ogm.context.MappingContext in project neo4j-ogm by neo4j.

the class MergeWithPrimaryIndexTests method setUpTestDatabase.

@BeforeClass
public static void setUpTestDatabase() {
    mappingMetadata = new MetaData("org.neo4j.ogm.domain.autoindex.valid", "org.neo4j.ogm.domain.cineasts.annotated", "org.neo4j.ogm.domain.pizza");
    mappingContext = new MappingContext(mappingMetadata);
}