java - How to delete whole child entities by ancestor? -

i'd reduce number of queries delete entities in google app engine. know how delete them ancestor below sequences.

1. set ancestor query , fetch them.
2. convert entities keys , delete them using keys.

i'd remove first step. expectation deleting entities ancestor without fetching below.

delete ds1 ancestor "parent"

is possible?

there's no way delete entities that. need access them key , batch delete.

though there's query type better suits needs, keys-only query, appear querying full entities delete them.