Examples with EmbeddedType com.google.cloud.spring.data.datastore.core.mapping.EmbeddedType used on opensource projects

Example 1 with EmbeddedType

use of com.google.cloud.spring.data.datastore.core.mapping.EmbeddedType in project spring-cloud-gcp by GoogleCloudPlatform.

the class TwoStepsConversions method convertOnRead.

private <T> T convertOnRead(Object val, EmbeddedType embeddedType, Class targetCollectionType, TypeInformation targetComponentType) {
    if (val == null) {
        return null;
    }
    BiFunction<Object, TypeInformation<?>, ?> readConverter;
    switch(embeddedType) {
        case EMBEDDED_MAP:
            readConverter = (x, typeInformation) -> convertOnReadSingleEmbeddedMap(x, typeInformation.getComponentType().getType(), typeInformation.getMapValueType(), targetComponentType);
            break;
        case EMBEDDED_ENTITY:
            readConverter = this::convertOnReadSingleEmbedded;
            break;
        case NOT_EMBEDDED:
            readConverter = this::convertOnReadSingle;
            break;
        default:
            throw new DatastoreDataException("Unexpected property embedded type: " + embeddedType);
    }
    if (ValueUtil.isCollectionLike(val.getClass()) && targetCollectionType != null && targetComponentType != null) {
        // Convert collection.
        try {
            Assert.isInstanceOf(Iterable.class, val, "Value passed to convertOnRead expected to be Iterable");
            List elements = StreamSupport.stream(((Iterable<?>) val).spliterator(), false).map(v -> {
                Object o = (v instanceof Value) ? ((Value) v).get() : v;
                return readConverter.apply(o, targetComponentType);
            }).collect(Collectors.toList());
            return (T) convertCollection(elements, targetCollectionType);
        } catch (ConversionException | DatastoreDataException ex) {
            throw new DatastoreDataException("Unable process elements of a collection", ex);
        }
    }
    // Convert single value.
    return (T) readConverter.apply(val, targetComponentType);
}