Examples with DatastoreDataException org.springframework.cloud.gcp.data.datastore.core.mapping.DatastoreDataException used on opensource projects

Example 16 with DatastoreDataException

use of org.springframework.cloud.gcp.data.datastore.core.mapping.DatastoreDataException in project spring-cloud-gcp by spring-cloud.

the class DefaultDatastoreEntityConverter method readAsMap.

@Override
public <T, R> Map<T, R> readAsMap(BaseEntity entity, TypeInformation mapTypeInformation) {
    Assert.notNull(mapTypeInformation, "mapTypeInformation can't be null");
    if (entity == null) {
        return null;
    }
    Map<T, R> result;
    if (!mapTypeInformation.getType().isInterface()) {
        try {
            result = (Map<T, R>) ((Constructor<?>) mapTypeInformation.getType().getConstructor()).newInstance();
        } catch (Exception e) {
            throw new DatastoreDataException("Unable to create an instance of a custom map type: " + mapTypeInformation.getType() + " (make sure the class is public and has a public no-args constructor)", e);
        }
    } else {
        result = new HashMap<>();
    }
    EntityPropertyValueProvider propertyValueProvider = new EntityPropertyValueProvider(entity, this.conversions);
    Set<String> fieldNames = entity.getNames();
    for (String field : fieldNames) {
        result.put(this.conversions.convertOnRead(field, NOT_EMBEDDED, mapTypeInformation.getComponentType()), propertyValueProvider.getPropertyValue(field, EmbeddedType.of(mapTypeInformation.getMapValueType()), mapTypeInformation.getMapValueType()));
    }
    return result;
}