Package org.springframework.integration.file.remote

Class RemoteFileTemplate<F>

java.lang.Object

org.springframework.integration.file.remote.RemoteFileTemplate<F>

Type Parameters:

F - the file type.

All Implemented Interfaces:

Aware, BeanFactoryAware, InitializingBean, RemoteFileOperations<F>

Direct Known Subclasses:

FtpRemoteFileTemplate, SftpRemoteFileTemplate

public class RemoteFileTemplate<F>
extends Object
implements RemoteFileOperations<F>, InitializingBean, BeanFactoryAware

A general abstraction for dealing with remote files.

Since:

3.0

Author:

Iwein Fuld, Mark Fisher, Josh Long, Oleg Zhurakousky, David Turanski, Gary Russell, Artem Bilan, Alen Turkovic

Nested Class Summary

Nested classes/interfaces inherited from interface org.springframework.integration.file.remote.RemoteFileOperations

RemoteFileOperations.OperationsCallback<F,T>

Field Summary

Fields

Modifier and Type	Field	Description
protected Log	logger
protected SessionFactory<F>	sessionFactory	The SessionFactory for acquiring remote file Sessions.

Constructor Summary

Constructors

Constructor	Description
RemoteFileTemplate(SessionFactory<F> sessionFactory)	Construct a RemoteFileTemplate with the supplied session factory.

Method Summary

Modifier and Type	Method	Description
void	afterPropertiesSet()
String	append(Message<?> message)	Send a file to a remote server, based on information in a message, appending.
String	append(Message<?> message, String subDirectory)	Send a file to a remote server, based on information in a message, appending.
<T> T	execute(SessionCallback<F,T> callback)	Execute the callback's doInSession method after obtaining a session.
<T, C> T	executeWithClient(ClientCallback<C,T> callback)	Execute the callback's doWithClient method after obtaining a session's client, providing access to low level methods.
boolean	exists(String path)	Check if a file exists on the remote server.
boolean	get(String remotePath, InputStreamCallback callback)	Retrieve a remote file as an InputStream.
boolean	get(Message<?> message, InputStreamCallback callback)	Retrieve a remote file as an InputStream, based on information in a message.
MessageProcessor<String>	getDirectoryExpressionProcessor()	Return the processor for remote directory SpEL expression if any.
String	getRemoteFileSeparator()
Session<F>	getSession()	Obtain a raw Session object.
SessionFactory<F>	getSessionFactory()
String	getTemporaryFileSuffix()
<T> T	invoke(RemoteFileOperations.OperationsCallback<F,T> action)	Invoke the callback and run all operations on the template argument in a dedicated thread-bound session and reliably close the it afterwards.
boolean	isUseTemporaryFileName()
F[]	list(String path)	List the files at the remote path.
boolean	remove(String path)	Remove a remote file.
void	rename(String fromPath, String toPath)	Rename a remote file, creating directories if needed.
String	send(Message<?> message, String subDirectory, FileExistsMode... mode)	Send a file to a remote server, based on information in a message.
String	send(Message<?> message, FileExistsMode... mode)	Send a file to a remote server, based on information in a message.
void	setAutoCreateDirectory(boolean autoCreateDirectory)	Determine whether the remote directory should automatically be created when sending files to the remote system.
void	setBeanFactory(BeanFactory beanFactory)
void	setCharset(String charset)	Set the charset to use when converting String payloads to bytes as the content of the remote file.
void	setFileNameExpression(Expression fileNameExpression)	Set the file name expression to determine the full path to the remote file when retrieving a file using the get(Message, InputStreamCallback) method, with the message being the root object of the evaluation.
void	setFileNameGenerator(FileNameGenerator fileNameGenerator)	Set the file name generator used to generate the remote filename to be used when transferring files to the remote system.
void	setRemoteDirectoryExpression(Expression remoteDirectoryExpression)	Set the remote directory expression used to determine the remote directory to which files will be sent.
void	setRemoteFileSeparator(String remoteFileSeparator)	Set the file separator when dealing with remote files; default '/'.
void	setTemporaryFileSuffix(String temporaryFileSuffix)	Set the temporary suffix to use when transferring files to the remote system.
void	setTemporaryRemoteDirectoryExpression(Expression temporaryRemoteDirectoryExpression)	Set a temporary remote directory expression; used when transferring files to the remote system.
void	setUseTemporaryFileName(boolean useTemporaryFileName)	Set whether a temporary file name is used when sending files to the remote system.

Methods inherited from class java.lang.Object

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

Field Details

logger

protected final Log logger

sessionFactory

protected final SessionFactory<F> sessionFactory

The SessionFactory for acquiring remote file Sessions.

Constructor Details

RemoteFileTemplate

public RemoteFileTemplate(SessionFactory<F> sessionFactory)

Construct a RemoteFileTemplate with the supplied session factory.

Parameters:

sessionFactory - the session factory.

Method Details

getSessionFactory

public SessionFactory<F> getSessionFactory()

Returns:

this template's SessionFactory.

Since:

4.2

setAutoCreateDirectory

public void setAutoCreateDirectory(boolean autoCreateDirectory)

Determine whether the remote directory should automatically be created when sending files to the remote system.

Parameters:

autoCreateDirectory - true to create the directory.

setRemoteFileSeparator

public void setRemoteFileSeparator(String remoteFileSeparator)

Set the file separator when dealing with remote files; default '/'.

Parameters:

remoteFileSeparator - the separator.

getRemoteFileSeparator

public final String getRemoteFileSeparator()

Returns:

the remote file separator.

setRemoteDirectoryExpression

public void setRemoteDirectoryExpression(Expression remoteDirectoryExpression)

Set the remote directory expression used to determine the remote directory to which files will be sent.

Parameters:

remoteDirectoryExpression - the remote directory expression.

getDirectoryExpressionProcessor

@Nullable public MessageProcessor<String> getDirectoryExpressionProcessor()

Return the processor for remote directory SpEL expression if any.

Returns:

the processor for remote directory SpEL expression.

setTemporaryRemoteDirectoryExpression

public void setTemporaryRemoteDirectoryExpression(Expression temporaryRemoteDirectoryExpression)

Set a temporary remote directory expression; used when transferring files to the remote system. After a successful transfer the file is renamed using the remoteDirectoryExpression.

Parameters:

temporaryRemoteDirectoryExpression - the temporary remote directory expression.

setFileNameExpression

public void setFileNameExpression(Expression fileNameExpression)

Set the file name expression to determine the full path to the remote file when retrieving a file using the get(Message, InputStreamCallback) method, with the message being the root object of the evaluation.

Parameters:

fileNameExpression - the file name expression.

getTemporaryFileSuffix

public String getTemporaryFileSuffix()

Returns:

the temporary file suffix.

isUseTemporaryFileName

public boolean isUseTemporaryFileName()

Returns:

whether a temporary file name is used when sending files to the remote system.

setUseTemporaryFileName

public void setUseTemporaryFileName(boolean useTemporaryFileName)

Set whether a temporary file name is used when sending files to the remote system.

Parameters:

useTemporaryFileName - true to use a temporary file name.

See Also:

setTemporaryFileSuffix(String)

setFileNameGenerator

public void setFileNameGenerator(FileNameGenerator fileNameGenerator)

Set the file name generator used to generate the remote filename to be used when transferring files to the remote system. Default DefaultFileNameGenerator.

Parameters:

fileNameGenerator - the file name generator.

setCharset

public void setCharset(String charset)

Set the charset to use when converting String payloads to bytes as the content of the remote file. Default UTF-8.

Parameters:

charset - the charset.

setTemporaryFileSuffix

public void setTemporaryFileSuffix(String temporaryFileSuffix)

Set the temporary suffix to use when transferring files to the remote system. Default ".writing".

Parameters:

temporaryFileSuffix - the suffix

See Also:

setUseTemporaryFileName(boolean)

setBeanFactory

public void setBeanFactory(BeanFactory beanFactory) throws BeansException

Specified by:

setBeanFactory in interface BeanFactoryAware

Throws:

BeansException

afterPropertiesSet

public void afterPropertiesSet()

Specified by:

afterPropertiesSet in interface InitializingBean

append

public String append(Message<?> message)

Description copied from interface: RemoteFileOperations

Send a file to a remote server, based on information in a message, appending.

Specified by:

append in interface RemoteFileOperations<F>

Parameters:

message - The message.

Returns:

The remote path, or null if no local file was found.

append

public String append(Message<?> message, String subDirectory)

Description copied from interface: RemoteFileOperations

Send a file to a remote server, based on information in a message, appending. The subDirectory is appended to the remote directory evaluated from the message.

Specified by:

append in interface RemoteFileOperations<F>

Parameters:

message - The message.

subDirectory - The sub directory.

Returns:

The remote path, or null if no local file was found.

send

public String send(Message<?> message, FileExistsMode... mode)

Description copied from interface: RemoteFileOperations

Send a file to a remote server, based on information in a message.

Specified by:

send in interface RemoteFileOperations<F>

Parameters:

message - The message.

mode - See FileExistsMode (optional; default REPLACE). A vararg is used to make the argument optional; only the first will be used if more than one is provided.

Returns:

The remote path, or null if no local file was found.

send

public String send(Message<?> message, String subDirectory, FileExistsMode... mode)

Description copied from interface: RemoteFileOperations

Send a file to a remote server, based on information in a message. The subDirectory is appended to the remote directory evaluated from the message.

Specified by:

send in interface RemoteFileOperations<F>

Parameters:

message - The message.

subDirectory - The sub directory.

mode - See FileExistsMode (optional; default REPLACE). A vararg is used to make the argument optional; only the first will be used if more than one is provided.

Returns:

The remote path, or null if no local file was found.

exists

public boolean exists(String path)

Description copied from interface: RemoteFileOperations

Check if a file exists on the remote server.

Specified by:

exists in interface RemoteFileOperations<F>

Parameters:

path - The full path to the file.

Returns:

true when the file exists.

remove

public boolean remove(String path)

Description copied from interface: RemoteFileOperations

Remove a remote file.

Specified by:

remove in interface RemoteFileOperations<F>

Parameters:

path - The full path to the file.

Returns:

true when successful.

rename

public void rename(String fromPath, String toPath)

Description copied from interface: RemoteFileOperations

Rename a remote file, creating directories if needed.

Specified by:

rename in interface RemoteFileOperations<F>

Parameters:

fromPath - The current path.

toPath - The new path.

get

public boolean get(Message<?> message, InputStreamCallback callback)

Description copied from interface: RemoteFileOperations

Retrieve a remote file as an InputStream, based on information in a message.

Specified by:

get in interface RemoteFileOperations<F>

Parameters:

message - The message which will be evaluated to generate the remote path.

callback - the callback.

Returns:

true if the operation was successful.

See Also:

setFileNameExpression(Expression)

get

public boolean get(String remotePath, InputStreamCallback callback)

Description copied from interface: RemoteFileOperations

Retrieve a remote file as an InputStream.

Specified by:

get in interface RemoteFileOperations<F>

Parameters:

remotePath - The remote path to the file.

callback - the callback.

Returns:

true if the operation was successful.

list

public F[] list(String path)

Description copied from interface: RemoteFileOperations

List the files at the remote path.

Specified by:

list in interface RemoteFileOperations<F>

Parameters:

path - the path.

Returns:

the list.

getSession

public Session<F> getSession()

Description copied from interface: RemoteFileOperations

Obtain a raw Session object. User must close the session when it is no longer needed.

Specified by:

getSession in interface RemoteFileOperations<F>

Returns:

a session.

execute

public <T> T execute(SessionCallback<F,T> callback)

Description copied from interface: RemoteFileOperations

Execute the callback's doInSession method after obtaining a session. Reliably closes the session when the method exits.

Specified by:

execute in interface RemoteFileOperations<F>

Type Parameters:

T - The type returned by SessionCallback.doInSession(org.springframework.integration.file.remote.session.Session).

Parameters:

callback - the SessionCallback.

Returns:

The result of the callback method.

invoke

public <T> T invoke(RemoteFileOperations.OperationsCallback<F,T> action)

Description copied from interface: RemoteFileOperations

Invoke the callback and run all operations on the template argument in a dedicated thread-bound session and reliably close the it afterwards.

Specified by:

invoke in interface RemoteFileOperations<F>

Type Parameters:

T - the return type.

Parameters:

action - the call back.

Returns:

the result from the RemoteFileOperations.OperationsCallback.doInOperations(RemoteFileOperations)

executeWithClient

public <T, C> T executeWithClient(ClientCallback<C,T> callback)

Description copied from interface: RemoteFileOperations

Execute the callback's doWithClient method after obtaining a session's client, providing access to low level methods. Reliably closes the session when the method exits.

Specified by:

executeWithClient in interface RemoteFileOperations<F>

Type Parameters:

T - The type returned by ClientCallback.doWithClient(Object).

C - The type of the underlying client object.

Parameters:

callback - the ClientCallback.

Returns:

The result of the callback method.