com.mongodb.operation

类 ListDatabasesOperation<T>

java.lang.Object

com.mongodb.operation.ListDatabasesOperation<T>

类型参数:

T - the document type

所有已实现的接口:

AsyncReadOperation<AsyncBatchCursor<T>>, ReadOperation<BatchCursor<T>>

public class ListDatabasesOperation<T>
extends java.lang.Object
implements AsyncReadOperation<AsyncBatchCursor<T>>, ReadOperation<BatchCursor<T>>

An operation that provides a cursor allowing iteration through the metadata of all the databases for a MongoClient.

从以下版本开始:

3.0

构造器概要

构造器

构造器和说明
ListDatabasesOperation(Decoder<T> decoder) Construct a new instance.

方法概要

限定符和类型	方法和说明
BatchCursor<T>	execute(ReadBinding binding) Executing this will return a list of all the databases names in the MongoDB instance.
void	executeAsync(AsyncReadBinding binding, SingleResultCallback<AsyncBatchCursor<T>> callback) General execute which can return anything of type T
long	getMaxTime(java.util.concurrent.TimeUnit timeUnit) Gets the maximum execution time on the server for this operation.
ListDatabasesOperation<T>	maxTime(long maxTime, java.util.concurrent.TimeUnit timeUnit) Sets the maximum execution time on the server for this operation.

从类继承的方法 java.lang.Object

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

构造器详细资料

ListDatabasesOperation

public ListDatabasesOperation(Decoder<T> decoder)

Construct a new instance.

参数:

decoder - the decoder to use for the results

方法详细资料

getMaxTime

public long getMaxTime(java.util.concurrent.TimeUnit timeUnit)

Gets the maximum execution time on the server for this operation. The default is 0, which places no limit on the execution time.

参数:

timeUnit - the time unit to return the result in

返回:

the maximum execution time in the given time unit

MongoDB documentation

Max Time

maxTime

public ListDatabasesOperation<T> maxTime(long maxTime,
                                         java.util.concurrent.TimeUnit timeUnit)

Sets the maximum execution time on the server for this operation.

参数:

maxTime - the max time

timeUnit - the time unit, which may not be null

返回:

this

MongoDB documentation

Max Time

execute

public BatchCursor<T> execute(ReadBinding binding)

Executing this will return a list of all the databases names in the MongoDB instance.

指定者:

execute 在接口中 ReadOperation<BatchCursor<T>>

参数:

binding - the binding.

返回:

a List of Strings of the names of all the databases in the MongoDB instance.

executeAsync

public void executeAsync(AsyncReadBinding binding,
                         SingleResultCallback<AsyncBatchCursor<T>> callback)

从接口复制的说明: AsyncReadOperation

General execute which can return anything of type T

指定者:

executeAsync 在接口中 AsyncReadOperation<AsyncBatchCursor<T>>

参数:

binding - the binding to execute in the context of

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