Gets a reference to a location relative to this one.

Gets a reference to a location relative to this one.

Default constructor.

This creates an invalidDatabaseReference. Attempting to perform any operations on this reference will fail unless a validDatabaseReference has been assigned to it.

Copy constructor.

It's totally okay (and efficient) to copyDatabaseReference instances, as they simply point to the same location in the database.

Move constructor.

Moving is an efficient operation forDatabaseReference instances.

Gets the parent of this location, or get this location again if IsRoot().

Gets the root of the database.

Manually disconnect Firebase RealtimeDatabase from the server, and disable automatic reconnection.

This will affect all other instances ofDatabaseReference as well.

Manually reestablish connection to the Firebase RealtimeDatabase server and enable automatic reconnection.

This will affect all other instances ofDatabaseReference as well.

Get the disconnect handler, which controls what actions the server will perform to this location's data when this client disconnects.

Automatically generates a child location, create a reference to it, and returns that reference to it.

Removes the value at this location from the database.

This is an asynchronous operation which takes time to execute, and usesfirebase::Future to return its result.

Note: Only oneRemoveValue() should be running on a given database location at the same time. If you need to run multiple operations at once, useRunTransaction().

Gets the result of the most recent call toRemoveValue();.

Run a user-supplied callback function (passing in a context), possibly multiple times, to perform an atomic transaction on the database.

See also:firebase::database::DoTransactionWithContext for more information.Note: Only oneRunTransaction() should be running on a given database location at the same time.

Run a user-supplied callback, possibly multiple times, to perform an atomic transaction on the database.

See also:firebase::database::DoTransactionFunction for more information.Note: Only oneRunTransaction() should be running on a given database location at the same time.Note: This version (that accepts an std::function) is not available when using stlport on Android. If you don't wish to use std::function, use the overloaded method that accepts a simple function pointer with a context.

Run a user-supplied callback function, possibly multiple times, to perform an atomic transaction on the database.

See also:firebase::database::DoTransaction for more information.Note: Only oneRunTransaction() should be running on a given database location at the same time.Note: This version (that accepts a simple function pointer) is only available when using stlport and std::function is not available.

Get the result of the most recent call toRunTransaction().

Sets the priority of this field, which controls its sort order relative to its siblings.

In Firebase, children are sorted in the following order:

1. First, children with no priority.
2. Then, children with numerical priority, sorted numerically in ascending order.
3. Then, remaining children, sorted lexicographically in ascending order of their text priority.

Children with the same priority (including no priority) are sorted by key: A. First, children with keys that can be parsed as 32-bit integers, sorted in ascending numerical order of their keys. B. Then, remaining children, sorted in ascending lexicographical order of their keys.

This is an asynchronous operation which takes time to execute, and usesfirebase::Future to return its result.

Note: Only oneSetPriority() should be running on a given database location at the same time. If you need to run multiple operations at once, useRunTransaction().

Gets the result of the most recent call toSetPriority().

Sets the data at this location to the given value.

This is an asynchronous operation which takes time to execute, and usesfirebase::Future to return its result.

Note: Only oneSetValue() should be running on a given database location at the same time. If you need to run multiple operations at once, useRunTransaction().

Sets both the data and priority of this location.

SeeSetValue() andSetPriority() for context on the parameters.

This is an asynchronous operation which takes time to execute, and usesfirebase::Future to return its result.

Note: Only oneSetValueAndPriority() should be running on a given database location at the same time.SetValueAndPriority() can't be used on the same location at the same time as eitherSetValue() orSetPriority(), and will return kErrorConflictingOperationInProgress if you try. If you need to run multiple operations at once, useRunTransaction().

Get the result of the most recent call toSetValueAndPriority().

Gets the result of the most recent call toSetValue().

Updates the specified child keys to the given values.

Note: This method will return kErrorConflictingOperationInProgress if it is run at the same time asSetValue(),SetValueAndPriority(), orRemoveValue() in the same location.

Updates the specified child keys to the given values.

This is an asynchronous operation which takes time to execute, and usesfirebase::Future to return its result.

Gets the result of the most recent call to either version ofUpdateChildren().

Gets the database to which we refer.

The pointer will remain valid indefinitely.

Returns true if this reference refers to the root of the database.

Returns true if this reference is valid, false if it is not valid.

DatabaseReferences constructed with the default constructor are considered invalid. An invalid reference could be returned byDatabase::GetReference() orDatabase::GetReferenceFromUrl() if you specify an incorrect location, or callingQuery::GetReference() on an invalid query.

Gets the string key of this database location.

The pointer is only valid while theDatabaseReference remains in memory.

Gets the string key of this database location.

Copy assignment operator.

It's totally okay (and efficient) to copyDatabaseReference instances, as they simply point to the same location in the database.

Move assignment operator.

Moving is an efficient operation forDatabaseReference instances.

Get the absolute URL of this reference.

Required virtual destructor.