Transaction

public class Transaction extends Object

The Transaction class encapsulates the functionality needed to perform a transaction on the data at a location.

To run a transaction, provide a Transaction.Handler to runTransaction(com.google.firebase.database.Transaction.Handler). That handler will be passed the current data at the location, and must return a Transaction.Result. A Transaction.Result can be created using either success(MutableData) or abort().

interface	Transaction.Handler		An object implementing this interface is used to run a transaction, and will be notified of the results of the transaction.
class	Transaction.Result		Instances of this class represent the desired outcome of a single run of a `Transaction.Handler`'s doTransaction method.

Transaction()

static Transaction.Result	abort()
static Transaction.Result	success(MutableData resultData)

From class java.lang.Object

Public Constructors

resultData	The desired data at the location