Mutation class

A modification to one or more Cloud Spanner rows. Mutations can be applied to a Cloud Spanner database by sending them in a Commit call.


Mutation.fromJson(Map _json)


delete Delete
Delete rows from a table. Succeeds whether or not the named rows were present.
read / write
hashCode int
The hash code for this object. [...]
read-only, inherited
insert Write
Insert new rows in a table. If any of the rows already exist, the write or transaction fails with error ALREADY_EXISTS.
read / write
insertOrUpdate Write
Like insert, except that if the row already exists, then its column values are overwritten with the ones provided. Any column values not explicitly written are preserved. When using insert_or_update, just as when using insert, all NOT NULL columns in the table must be given a value. This holds true even when the row already exists and will therefore actually be updated.
read / write
replace Write
Like insert, except that if the row already exists, it is deleted, and the column values provided are inserted instead. Unlike insert_or_update, this means any values not explicitly written become NULL. In an interleaved table, if you create the child table with the ON DELETE CASCADE annotation, then replacing a parent row also deletes the child rows. Otherwise, you must delete the child rows before you replace the parent row.
read / write
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
update Write
Update existing rows in a table. If any of the rows does not already exist, the transaction fails with error NOT_FOUND.
read / write


noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
toJson() Map<String, Object>
toString() String
Returns a string representation of this object.


operator ==(Object other) bool
The equality operator. [...]