Examples with FieldInfo org.neo4j.ogm.metadata.FieldInfo used on opensource projects

Example 6 with FieldInfo

use of org.neo4j.ogm.metadata.FieldInfo in project neo4j-ogm by neo4j.

the class GraphEntityMapper method mapOneToMany.

/**
 * Map many values to an instance based on the relationship type.
 * See DATAGRAPH-637
 *
 * @param instance         the instance to map values onto
 * @param valueType        the type of each value
 * @param values           the values to map
 * @param relationshipType the relationship type associated with these values
 */
private void mapOneToMany(Object instance, Class<?> valueType, Object values, String relationshipType, Direction relationshipDirection) {
    ClassInfo classInfo = metadata.classInfo(instance);
    FieldInfo writer = EntityAccessManager.getIterableField(classInfo, valueType, relationshipType, relationshipDirection);
    if (writer != null) {
        if (writer.type().isArray() || Iterable.class.isAssignableFrom(writer.type())) {
            FieldInfo reader = EntityAccessManager.getIterableField(classInfo, valueType, relationshipType, relationshipDirection);
            Object currentValues;
            if (reader != null) {
                currentValues = reader.read(instance);
                if (writer.type().isArray()) {
                    values = EntityAccessManager.merge(writer.type(), values, (Object[]) currentValues, valueType);
                } else {
                    values = EntityAccessManager.merge(writer.type(), values, (Collection) currentValues, valueType);
                }
            }
        }
        writer.write(instance, values);
        return;
    }
    // this is not necessarily an error. but we can't tell.
    logger.debug("Unable to map iterable of type: {} onto property of {}", valueType, classInfo.name());
}

Example 7 with FieldInfo

use of org.neo4j.ogm.metadata.FieldInfo in project neo4j-ogm by neo4j.

the class GraphEntityMapper method setLabels.

private void setLabels(Node nodeModel, Object instance) {
    ClassInfo classInfo = metadata.classInfo(instance);
    FieldInfo labelFieldInfo = classInfo.labelFieldOrNull();
    if (labelFieldInfo != null) {
        Collection<String> staticLabels = classInfo.staticLabels();
        Set<String> dynamicLabels = new HashSet<>();
        for (String label : nodeModel.getLabels()) {
            if (!staticLabels.contains(label)) {
                dynamicLabels.add(label);
            }
        }
        writeProperty(classInfo, instance, PropertyModel.with(labelFieldInfo.getName(), dynamicLabels));
    }
}

Example 8 with FieldInfo

use of org.neo4j.ogm.metadata.FieldInfo in project neo4j-ogm by neo4j.

the class IdentityMap method hash.

private static long hash(Object object, ClassInfo classInfo) {
    List<FieldInfo> hashFields = new ArrayList<>(classInfo.propertyFields());
    if (classInfo.labelFieldOrNull() != null) {
        hashFields.add(classInfo.labelFieldOrNull());
    }
    long hash = SEED;
    for (FieldInfo fieldInfo : hashFields) {
        Object value = fieldInfo.read(object);
        if (value != null) {
            if (value.getClass().isArray()) {
                hash = hash * 31L + hashArray(value);
            } else {
                hash = hash * 31L + value.hashCode();
            }
        }
    }
    return hash;
}

Example 9 with FieldInfo

use of org.neo4j.ogm.metadata.FieldInfo in project neo4j-ogm by neo4j.

the class MappingContext method optionalNativeId.

/**
 * This method does not trigger a possible {@link IdStrategy} while accessing the identiy- or primary index field.
 *
 * @param entity The entity in question
 * @return An optional native id.
 */
public Optional<Long> optionalNativeId(Object entity) {
    ClassInfo classInfo = metaData.classInfo(entity);
    if (classInfo == null) {
        throw new IllegalArgumentException("Class " + entity.getClass() + " is not a valid entity class. " + "Please check the entity mapping.");
    }
    if (classInfo.hasIdentityField()) {
        FieldInfo identityField = classInfo.identityField();
        Object value = identityField.readProperty(entity);
        return Optional.ofNullable((Long) value);
    } else {
        Object primaryIndexValue = classInfo.readPrimaryIndexValueOf(entity);
        return Optional.ofNullable(primaryIndexValue).map(v -> primaryIdToNativeId.get(LabelPrimaryId.of(classInfo, v)));
    }
}

Example 10 with FieldInfo

use of org.neo4j.ogm.metadata.FieldInfo in project neo4j-ogm by neo4j.

the class MappingContext method deregisterDependentRelationshipEntity.

/**
 * Deregister a relationship entity if it has either start or end node equal to the supplied startOrEndEntity
 *
 * @param startOrEndEntity the entity that might be the start or end node of a relationship entity
 */
private void deregisterDependentRelationshipEntity(Object startOrEndEntity) {
    Iterator<Long> relationshipEntityIdIterator = relationshipEntityRegister.keySet().iterator();
    while (relationshipEntityIdIterator.hasNext()) {
        Long relationshipEntityId = relationshipEntityIdIterator.next();
        Object relationshipEntity = relationshipEntityRegister.get(relationshipEntityId);
        final ClassInfo classInfo = metaData.classInfo(relationshipEntity);
        FieldInfo startNodeReader = classInfo.getStartNodeReader();
        FieldInfo endNodeReader = classInfo.getEndNodeReader();
        if (startOrEndEntity == startNodeReader.read(relationshipEntity) || startOrEndEntity == endNodeReader.read(relationshipEntity)) {
            relationshipEntityIdIterator.remove();
        }
    }
}