Class KeySet (6.83.0)

Defines a collection of Cloud Spanner keys and/or key ranges. All the keys are expected to be in the same table or index. The keys need not be sorted in any particular way.

If the same key is specified multiple times in the set (for example if two ranges, two keys, or a key and a range overlap), the Cloud Spanner backend behaves as if the key were only specified once. However, the KeySet object itself does not perform any de-duplication.

KeySet instances are immutable.

Creates a key set that will retrieve all rows of a table or index.

Returns a new builder that can be used to construct a key set.

Creates a key set that covers all keys where the first prefix.size() components match prefix exactly.

Creates a key set containing a single range. See KeyRange for details of how to specify ranges.

Creates a key set containing a single key. key should contain exactly as many elements as there are columns in the primary or index key with this this key set is used.

Returns the keys in this set.

Returns the ranges in this set.

Indicates whether the set will retrieve all rows in a table or index.

Returns a builder initialized with the contents of this set.