com.mongodb.operation

Class UserExistsOperation

java.lang.Object

com.mongodb.operation.UserExistsOperation

All Implemented Interfaces:

AsyncReadOperation<java.lang.Boolean>, ReadOperation<java.lang.Boolean>

public class UserExistsOperation
extends java.lang.Object
implements AsyncReadOperation<java.lang.Boolean>, ReadOperation<java.lang.Boolean>

An operation that determines if a user exists.

Since:

3.0

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	databaseName
private java.lang.String	userName

Constructor Summary

Constructors

Constructor and Description
UserExistsOperation(java.lang.String databaseName, java.lang.String userName) Construct a new instance.

Method Summary

Modifier and Type	Method and Description
java.lang.Boolean	execute(ReadBinding binding) General execute which can return anything of type T
void	executeAsync(AsyncReadBinding binding, SingleResultCallback<java.lang.Boolean> callback) General execute which can return anything of type T
private BsonDocument	getCommand()
private CommandOperationHelper.CommandTransformer<BsonDocument,java.lang.Boolean>	transformer()
private CommandOperationHelper.CommandTransformer<QueryResult<BsonDocument>,java.lang.Boolean>	transformQueryResult()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

databaseName

private final java.lang.String databaseName

userName

private final java.lang.String userName

Constructor Detail

UserExistsOperation

public UserExistsOperation(java.lang.String databaseName,
                           java.lang.String userName)

Construct a new instance.

Parameters:

databaseName - the name of the database for the operation.

userName - the name of the user to check if they exist.

Method Detail

execute

public java.lang.Boolean execute(ReadBinding binding)

Description copied from interface: ReadOperation

General execute which can return anything of type T

Specified by:

execute in interface ReadOperation<java.lang.Boolean>

Parameters:

binding - the binding to execute in the context of

Returns:

T, the result of the execution

executeAsync

public void executeAsync(AsyncReadBinding binding,
                         SingleResultCallback<java.lang.Boolean> callback)

Description copied from interface: AsyncReadOperation

General execute which can return anything of type T

Specified by:

executeAsync in interface AsyncReadOperation<java.lang.Boolean>

Parameters:

binding - the binding to execute in the context of

callback - the callback to be called when the operation has been executed

transformer

private CommandOperationHelper.CommandTransformer<BsonDocument,java.lang.Boolean> transformer()

transformQueryResult

private CommandOperationHelper.CommandTransformer<QueryResult<BsonDocument>,java.lang.Boolean> transformQueryResult()

getCommand

private BsonDocument getCommand()