Examples with DefaultGraphModelRequest org.neo4j.ogm.cypher.query.DefaultGraphModelRequest used on opensource projects

Example 1 with DefaultGraphModelRequest

use of org.neo4j.ogm.cypher.query.DefaultGraphModelRequest in project neo4j-ogm by neo4j.

the class ParameterisedStatementsTest method testStatement.

@Test
public void testStatement() throws Exception {
    List<Statement> statements = new ArrayList<>();
    PagingAndSortingQuery query = new NodeQueryStatements().findOne(123L, 1);
    statements.add(new DefaultGraphModelRequest(query.getStatement(), query.getParameters()));
    String cypher = mapper.writeValueAsString(new Statements(statements));
    assertThat(cypher).isEqualTo("{\"statements\":[{\"statement\":\"MATCH (n) WHERE ID(n) = $id WITH n MATCH p=(n)-[*0..1]-(m) RETURN p\",\"parameters\":{\"id\":123},\"resultDataContents\":[\"graph\"],\"includeStats\":false}]}");
}

Example 2 with DefaultGraphModelRequest

use of org.neo4j.ogm.cypher.query.DefaultGraphModelRequest in project neo4j-ogm by neo4j.

the class LoadOneDelegate method load.

public <T, ID extends Serializable> T load(Class<T> type, ID id, int depth) {
    ClassInfo classInfo = session.metaData().classInfo(type.getName());
    if (classInfo == null) {
        throw new IllegalArgumentException(type + " is not a managed entity.");
    }
    final FieldInfo primaryIndexField = classInfo.primaryIndexField();
    if (primaryIndexField != null && !primaryIndexField.isTypeOf(id.getClass())) {
        throw new IllegalArgumentException("Supplied id does not match primary index type on supplied class " + type.getName());
    }
    if (primaryIndexField == null && !(id instanceof Long)) {
        throw new IllegalArgumentException("Supplied id must be of type Long (native graph id) when supplied class " + "does not have primary id " + type.getName());
    }
    Optional<String> labelsOrType = session.determineLabelsOrTypeForLoading(type);
    if (!labelsOrType.isPresent()) {
        logger.warn("Unable to find database label for entity " + type.getName() + " : no results will be returned. Make sure the class is registered, " + "and not abstract without @NodeEntity annotation");
        return null;
    }
    QueryStatements<ID> queryStatements = session.queryStatementsFor(type, depth);
    PagingAndSortingQuery qry = queryStatements.findOneByType(labelsOrType.get(), convertIfNeeded(classInfo, id), depth);
    GraphModelRequest request = new DefaultGraphModelRequest(qry.getStatement(), qry.getParameters());
    return session.doInTransaction(() -> {
        try (Response<GraphModel> response = session.requestHandler().execute(request)) {
            new GraphRowModelMapper(session.metaData(), session.context(), session.getEntityInstantiator()).map(type, response);
            return lookup(type, id);
        }
    }, Transaction.Type.READ_ONLY);
}

Example 3 with DefaultGraphModelRequest

use of org.neo4j.ogm.cypher.query.DefaultGraphModelRequest in project neo4j-ogm by neo4j.

the class LoadByIdsDelegate method loadAll.

public <T, ID extends Serializable> Collection<T> loadAll(Class<T> type, Collection<ID> ids, SortOrder sortOrder, Pagination pagination, int depth) {
    Optional<String> labelsOrType = session.determineLabelsOrTypeForLoading(type);
    if (!labelsOrType.isPresent()) {
        LOG.warn("Unable to find database label for entity " + type.getName() + " : no results will be returned. Make sure the class is registered, " + "and not abstract without @NodeEntity annotation");
        return Collections.emptyList();
    }
    QueryStatements<ID> queryStatements = session.queryStatementsFor(type, depth);
    ClassInfo classInfo = session.metaData().classInfo(type.getName());
    PagingAndSortingQuery qry = queryStatements.findAllByType(labelsOrType.get(), convertIfNeeded(classInfo, ids), depth).setSortOrder(sortOrder).setPagination(pagination);
    GraphModelRequest request = new DefaultGraphModelRequest(qry.getStatement(), qry.getParameters());
    return session.doInTransaction(() -> {
        try (Response<GraphModel> response = session.requestHandler().execute(request)) {
            Iterable<T> mapped = new GraphRowModelMapper(session.metaData(), session.context(), session.getEntityInstantiator()).map(type, response);
            if (sortOrder.sortClauses().isEmpty()) {
                return sortResultsByIds(type, ids, mapped);
            }
            Set<T> results = new LinkedHashSet<>();
            for (T entity : mapped) {
                if (includeMappedEntity(ids, entity)) {
                    results.add(entity);
                }
            }
            return results;
        }
    }, Transaction.Type.READ_ONLY);
}

Example 4 with DefaultGraphModelRequest

use of org.neo4j.ogm.cypher.query.DefaultGraphModelRequest in project neo4j-ogm by neo4j.

the class LoadByTypeDelegate method loadAll.

/**
 * Loads all objects of a given {@code type}. The {@code type} is used to determine the Neo4j label. If no such label
 * can be determined, a warning is logged and an immutable, empty list is returned to prevent queries without label
 * that potentially can retrieve all objects in the database if no {@link Filters filters} are given.
 *
 * @param type       The type of objects to load.
 * @param filters    Additional filters to reduce the number of objects loaded, may be null or empty.
 * @param sortOrder  Sort order to be passed on to the database
 * @param pagination Pagination if required
 * @param depth      Depth of relationships to load
 * @param <T>        Returned type
 * @return A list of objects with the requested type
 */
public <T> Collection<T> loadAll(Class<T> type, Filters filters, SortOrder sortOrder, Pagination pagination, int depth) {
    Optional<String> labelsOrType = session.determineLabelsOrTypeForLoading(type);
    if (!labelsOrType.isPresent()) {
        LOG.warn("Unable to find database label for entity " + type.getName() + " : no results will be returned. Make sure the class is registered, " + "and not abstract without @NodeEntity annotation");
        return Collections.emptyList();
    }
    QueryStatements queryStatements = session.queryStatementsFor(type, depth);
    SortOrder sortOrderWithResolvedProperties = sortOrderWithResolvedProperties(type, sortOrder);
    PagingAndSortingQuery query;
    if (filters == null || filters.isEmpty()) {
        query = queryStatements.findByType(labelsOrType.get(), depth);
    } else {
        resolvePropertyAnnotations(type, filters);
        query = queryStatements.findByType(labelsOrType.get(), filters, depth);
    }
    query.setSortOrder(sortOrderWithResolvedProperties).setPagination(pagination);
    return session.doInTransaction(() -> {
        if (query.needsRowResult()) {
            DefaultGraphRowListModelRequest graphRowListModelRequest = new DefaultGraphRowListModelRequest(query.getStatement(), query.getParameters());
            try (Response<GraphRowListModel> response = session.requestHandler().execute(graphRowListModelRequest)) {
                return (Collection<T>) new GraphRowListModelMapper(session.metaData(), session.context(), session.getEntityInstantiator()).map(type, response);
            }
        } else {
            GraphModelRequest request = new DefaultGraphModelRequest(query.getStatement(), query.getParameters());
            try (Response<GraphModel> response = session.requestHandler().execute(request)) {
                return (Collection<T>) new GraphRowModelMapper(session.metaData(), session.context(), session.getEntityInstantiator()).map(type, response);
            }
        }
    }, Transaction.Type.READ_WRITE);
}