hugegraph-hbase/src/main/java/org/apache/hugegraph/backend/store/hbase/HbaseStore.java [202:228]:
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        switch (item.action()) {
            case INSERT:
                table.insert(session, entry);
                break;
            case DELETE:
                table.delete(session, entry);
                break;
            case APPEND:
                table.append(session, entry);
                break;
            case ELIMINATE:
                table.eliminate(session, entry);
                break;
            case UPDATE_IF_PRESENT:
                table.updateIfPresent(session, entry);
                break;
            case UPDATE_IF_ABSENT:
                table.updateIfAbsent(session, entry);
                break;
            default:
                throw new AssertionError(String.format(
                          "Unsupported mutate action: %s", item.action()));
        }
    }

    @Override
    public Iterator<BackendEntry> query(Query query) {
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hugegraph-rocksdb/src/main/java/org/apache/hugegraph/backend/store/rocksdb/RocksDBStore.java [471:497]:
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        switch (item.action()) {
            case INSERT:
                table.insert(session, entry);
                break;
            case DELETE:
                table.delete(session, entry);
                break;
            case APPEND:
                table.append(session, entry);
                break;
            case ELIMINATE:
                table.eliminate(session, entry);
                break;
            case UPDATE_IF_PRESENT:
                table.updateIfPresent(session, entry);
                break;
            case UPDATE_IF_ABSENT:
                table.updateIfAbsent(session, entry);
                break;
            default:
                throw new AssertionError(String.format(
                          "Unsupported mutate action: %s", item.action()));
        }
    }

    @Override
    public Iterator<BackendEntry> query(Query query) {
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