If the index is at the bucket-level, this will return the bucket name. If the index is at the collection-level,
the keyspace is the name of the collection.
Returns an array of Strings that represent the index key(s).
The array is empty in the case of a PRIMARY INDEX.
Note that the query service can present the key in a slightly different manner from when you declared the index:
for instance, it will show the indexed fields in an escaped format (surrounded by backticks).
Returns:
an array of Strings that represent the index key(s), or an empty array in the case of a PRIMARY index.
Returns the String representation of the index's condition (the WHERE clause of the index), or an empty
Optional if no condition was set.
Note that the query service can present the condition in a slightly different manner from when you declared the index:
for instance it will wrap expressions with parentheses and show the fields in an escaped format (surrounded by
backticks).
Returns:
the condition/WHERE clause of the index or empty string if none.