jerryshao commented on code in PR #7734:
URL: https://github.com/apache/gravitino/pull/7734#discussion_r2275246868
##########
core/src/main/java/org/apache/gravitino/storage/relational/JDBCBackend.java:
##########
@@ -569,6 +593,103 @@ public <E extends Entity & HasIdentifier> List<E>
updateEntityRelations(
}
}
+ @Override
+ public int deleteEntitiesAndRelations(
+ Type relType, Relation.VertexType deleteVertexType, List<Relation>
relations)
+ throws IOException {
+ switch (relType) {
+ case METADATA_OBJECT_STAT_REL:
+ Preconditions.checkArgument(
+ deleteVertexType == Relation.VertexType.DESTINATION,
+ "Only supports to delete relations of destination vertex");
+
+ AtomicInteger deleteCount = new AtomicInteger(0);
+ Map<Pair<NameIdentifier, Entity.EntityType>, List<Relation>>
groupedRelations =
+
relations.stream().collect(Collectors.groupingBy(Relation::getSourceVertex));
+
+ if (groupedRelations.isEmpty()) {
+ return 0; // No relations to delete.
+ }
+
+ Preconditions.checkArgument(
+ groupedRelations.size() == 1,
+ "The relations must have the same source identifier and type, but
got %s groups",
+ groupedRelations.size());
+
+ groupedRelations.forEach(
+ (sourceVertex, deleteRelations) -> {
+ List<String> statsToDelete =
+ deleteRelations.stream()
+ .map(relation -> relation.getDestIdent().name())
+ .collect(Collectors.toList());
+
+ deleteRelations.forEach(
+ relation ->
+ Preconditions.checkArgument(
+ relation.getDestType() == STATISTIC,
+ "The destination type of relation must be STATISTIC,
but got %s",
+ relation.getDestType()));
+
+ deleteCount.addAndGet(
+ StatisticMetaService.getInstance()
+ .batchDeleteStatisticPOs(
+ sourceVertex.getLeft(), sourceVertex.getRight(),
statsToDelete));
+ });
+ return deleteCount.get();
+ default:
+ throw new IllegalArgumentException(
+ String.format("Doesn't support the relation type %s", relType));
+ }
+ }
+
+ @Override
+ public <E extends Entity & HasIdentifier> Void insertEntitiesAndRelations(
+ Type relType, List<Entity.RelationalEntity<E>> entities, boolean
overwrite)
+ throws IOException {
+ switch (relType) {
+ case METADATA_OBJECT_STAT_REL:
+ Preconditions.checkArgument(
+ overwrite, "The overwrite must be true for metadata object stats
relation");
+
+ StatisticMetaService metaService = StatisticMetaService.getInstance();
+ List<StatisticEntity> statisticEntities = Lists.newArrayList();
+
+ Set<NameIdentifier> relatedIdents = Sets.newHashSet();
+ Set<Entity.EntityType> relatedEntityTypes = Sets.newHashSet();
+
+ for (Entity.RelationalEntity<E> relEntity : entities) {
+ Preconditions.checkArgument(
+ relEntity.relatedNameIdentifiers().size() == 1,
+ "Each entity must have exactly one related identifier");
+ NameIdentifier relatedIdent =
relEntity.relatedNameIdentifiers().get(0);
+ relatedIdents.add(relatedIdent);
+ relatedEntityTypes.add(relEntity.relatedEntityType());
+ Preconditions.checkArgument(
+ relEntity.entity() instanceof StatisticEntity,
+ "The entity must be a StatisticEntity");
+ statisticEntities.add((StatisticEntity) relEntity.entity());
+ }
+
+ Preconditions.checkArgument(
+ relatedIdents.size() == 1,
+ "All entities must have the same related identifier, but got %s",
+ relatedIdents.size());
+
+ Preconditions.checkArgument(
+ relatedEntityTypes.size() == 1,
+ "All entities must have the same related entity type, but got %s",
+ relatedEntityTypes.size());
+
+ Entity.EntityType type = relatedEntityTypes.iterator().next();
+ metaService.batchInsertStatisticPOsOnDuplicateKeyUpdate(
+ statisticEntities, relatedIdents.iterator().next(), type);
+ return null;
Review Comment:
Why do you need this?
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