org.apache.hadoop.hdfs.protocol

类 DirectoryListing

java.lang.Object

org.apache.hadoop.hdfs.protocol.DirectoryListing

所有已实现的接口:

Writable

public class DirectoryListing
extends Object
implements Writable

This class defines a partial listing of a directory to support iterative directory listing.

构造器概要

构造器

构造器和说明
DirectoryListing() default constructor
DirectoryListing(HdfsFileStatus[] partialListing, int remainingEntries) constructor

方法概要

方法

限定符和类型	方法和说明
byte[]	getLastName() Get the last name in this list
HdfsFileStatus[]	getPartialListing() Get the partial listing of file status
int	getRemainingEntries() Get the number of remaining entries that are left to be listed
boolean	hasMore() Check if there are more entries that are left to be listed
void	readFields(DataInput in) Deserialize the fields of this object from in.
void	write(DataOutput out) Serialize the fields of this object to out.

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

DirectoryListing

public DirectoryListing()

default constructor

DirectoryListing

public DirectoryListing(HdfsFileStatus[] partialListing,
                int remainingEntries)

constructor

参数:

partialListing - a partial listing of a directory

remainingEntries - number of entries that are left to be listed

方法详细资料

getPartialListing

public HdfsFileStatus[] getPartialListing()

Get the partial listing of file status

返回:

the partial listing of file status

getRemainingEntries

public int getRemainingEntries()

Get the number of remaining entries that are left to be listed

返回:

the number of remaining entries that are left to be listed

hasMore

public boolean hasMore()

Check if there are more entries that are left to be listed

返回:

true if there are more entries that are left to be listed; return false otherwise.

getLastName

public byte[] getLastName()

Get the last name in this list

返回:

the last name in the list if it is not empty; otherwise return null

readFields

public void readFields(DataInput in)
                throws IOException

从接口复制的说明: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

指定者:

readFields 在接口中 Writable

参数:

in - DataInput to deseriablize this object from.

抛出:

IOException

write

public void write(DataOutput out)
           throws IOException

从接口复制的说明: Writable

Serialize the fields of this object to out.

指定者:

write 在接口中 Writable

参数:

out - DataOuput to serialize this object into.

抛出:

IOException