Represents an individual table modification to be applied to Cloud Spanner.
The types of mutation that can be created are defined by Op. To construct a mutation,
use one of the builder methods. For example, to create a mutation that will insert a value of "x"
into "C1" and a value of "y" into "C2" of table "T", write the following code:
Mutation m = Mutation.newInsertBuilder("T")
.set("C1").to("x")
.set("C2").to("y")
.build();
Mutations are applied to a database by performing a standalone write or buffering them as part of
a transaction. TODO(user): Add links/code samples once the corresponding APIs are available.
For all types except Op#DELETE, constructs a map from column name to value. This is
mainly intended as a convenience for testing; direct access via #getColumns() and
#getValues() is more efficient.
For all types except Op#DELETE, returns the values that this mutation will write. The
number of elements returned is always the same as the number returned by #getColumns(),
and the ith value corresponds to the ith column.
Returns a builder that can be used to construct an Op#INSERT_OR_UPDATE mutation against
table; see the INSERT_OR_UPDATE documentation for mutation semantics.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-11-19 UTC."],[],[]]
