org.ow2.petals.component.framework.api.message
Interface Exchange

public interface Exchange

The MessageExchange wrapper to handle properly MessageExchange against the CDK.

Author:

Roland Naudin - EBM WebSourcing, Christophe Hamerling - EBM WebSourcing

Field Summary

static javax.xml.namespace.QName	DEFAULT_FAULT_QNAME
static java.lang.String	FAULT_MESSAGE_NAME
static java.lang.String	IN_MESSAGE_NAME
static java.lang.String	OUT_MESSAGE_NAME
static java.lang.String	PROPERTY_PROVIDER_LINKTYPE

Method Summary

void	addInMessageAttachment(java.lang.String name, javax.activation.DataHandler dataHandler)
void	addOutMessageAttachment(java.lang.String name, javax.activation.DataHandler dataHandler)
javax.jbi.messaging.Fault	createFault()
javax.jbi.servicedesc.ServiceEndpoint	getEndpoint()
java.lang.String	getEndpointName() Get the endpoint name specified in the message exchange
java.lang.Exception	getError()
java.lang.String	getExchangeId()
java.net.URI	getExchangePattern() Get the message exchange Pattern
javax.jbi.messaging.Fault	getFault() Get the exchange fault
javax.jbi.messaging.FlowAttributes	getFlowAttributes() Get the flow attributes of the message exchange
java.util.Map<javax.xml.namespace.QName,java.lang.String>	getInAddressing() Get the addressing data from the IN message.
javax.jbi.messaging.NormalizedMessage	getInMessage() Extract incoming NormalizedMessage from given MessageExchange.
javax.activation.DataHandler	getInMessageAttachment(java.lang.String name) Get the "In" attachment matching the given name
java.util.Set<java.lang.String>	getInMessageAttachmentNames() Get all the "In" attachment names
java.util.Set<javax.activation.DataHandler>	getInMessageAttachments() Get the "In" attachments in a Set
org.w3c.dom.Document	getInMessageContentAsDocument() Get the content of the "in" message as a DOM document.
org.w3c.dom.Document	getInMessageContentAsDocument(boolean forkSource) Get the content of the "in" message as a DOM document.
javax.xml.transform.Source	getInMessageContentAsSource() Get the content of the "in" message as a Source
java.lang.Object	getInMessageProperty(java.lang.String name)
java.util.Set<java.lang.String>	getInMessagePropertyNames()
javax.security.auth.Subject	getInSubject() Get "In" security subject
javax.xml.namespace.QName	getInterfaceName()
javax.xml.namespace.QName	getOperation()
java.lang.String	getOperationName() Get the operation name (local part of the operation QName)
javax.jbi.messaging.NormalizedMessage	getOutMessage() Extract outgoing NormalizedMessage from given MessageExchange.
javax.activation.DataHandler	getOutMessageAttachment(java.lang.String name) Get the "Out" attachment matching the attachment name.
java.util.Set<java.lang.String>	getOutMessageAttachmentNames() Get all the "Out" attachment names.
java.util.Set<javax.activation.DataHandler>	getOutMessageAttachments() Get all the "Out" attachments in a Set.
org.w3c.dom.Document	getOutMessageContentAsDocument() Get the content of the "out" message as a DOM document.
org.w3c.dom.Document	getOutMessageContentAsDocument(boolean forkSource) Get the content of the "out" message as a DOM document.
javax.xml.transform.Source	getOutMessageContentAsSource() Get the content of the "out" message as a Source
java.lang.Object	getOutMessageProperty(java.lang.String name)
java.util.Set<?>	getOutMessagePropertyNames()
javax.security.auth.Subject	getOutSubject() Get "Out" security subject
java.net.URI	getPattern()
java.lang.Object	getProperty(java.lang.String name)
java.util.Set<?>	getPropertyNames()
javax.jbi.messaging.MessageExchange.Role	getRole()
javax.xml.namespace.QName	getService()
javax.jbi.messaging.ExchangeStatus	getStatus()
boolean	isActiveStatus() Test if the message status is ACTIVE
boolean	isConsumerRole() Test if the message role is consumer
boolean	isDoneStatus() Test if the message status is DONE
boolean	isErrorStatus() Test if the message status is ERROR
boolean	isInMessage() Test if an In message is set on the MessageExchange
boolean	isInOnlyPattern()
boolean	isInOptionalOutPattern()
boolean	isInOutPattern()
boolean	isOutMessage() Test if an out message is set on the MessageExchange
boolean	isProviderRole() Test if the message role is provider
boolean	isRobustInOnlyPattern()
boolean	isTransacted()
void	setActiveStatus() Set the message exchange status to ACTIVE
void	setDoneStatus() Set the message exchange status to DONE
void	setEndpoint(javax.jbi.servicedesc.ServiceEndpoint endpoint)
void	setError(java.lang.Exception error) Put the given exception as Error part of the message exchange.
void	setErrorStatus() Set the message exchange status to Error
void	setFault(javax.jbi.messaging.Fault fault)
void	setFault(java.lang.Throwable e) Create a Fault with the given Exception and set it in the MessageExchange
void	setInAddressing(java.util.Map<javax.xml.namespace.QName,java.lang.String> map) Set the addressing information in the IN message.
void	setInMessage(javax.jbi.messaging.NormalizedMessage msg) Set the input message
void	setInMessageAttachment(java.lang.String name, javax.activation.DataHandler attachement) Put the attachment in the "out" message.
void	setInMessageAttachments(java.util.Map<java.lang.String,javax.activation.DataHandler> attachements) Put a Map of attachments in the out message of the message exchange.
void	setInMessageContent(org.w3c.dom.Document inContent) Put a Source object in the in message of the message exchange.
void	setInMessageContent(java.io.InputStream inContent) Put a String object in the in message of the message exchange.
void	setInMessageContent(javax.xml.transform.Source inContent) Put a Source object in the in message of the message exchange.
void	setInMessageProperties(java.util.Map<java.lang.String,java.lang.Object> properties)
void	setInMessageProperty(java.lang.String name, java.lang.Object value)
void	setInSubject(javax.security.auth.Subject subject) Set the "In" security subject.
void	setInterfaceName(javax.xml.namespace.QName interfaceName) Set the target interface name to invoke the service
void	setOperation(javax.xml.namespace.QName name) Set the message operation
void	setOutMessage(javax.jbi.messaging.NormalizedMessage msg) Set the output message
void	setOutMessageAttachment(java.lang.String name, javax.activation.DataHandler attachment) Put the attachment in the "out" message.
void	setOutMessageAttachments(java.util.Map<java.lang.String,javax.activation.DataHandler> attachements) Put a Map of attachments in the "out" message.
void	setOutMessageContent(org.w3c.dom.Document outContent) Put a Source object in the out message of the message exchange.
void	setOutMessageContent(java.io.InputStream inContent) Put a String object in the in message of the message exchange.
void	setOutMessageContent(javax.xml.transform.Source outContent) Put a Source object in the out message of the message exchange.
void	setOutMessageProperties(java.util.Map<java.lang.String,java.lang.Object> properties)
void	setOutMessageProperty(java.lang.String name, java.lang.Object value)
void	setOutSubject(javax.security.auth.Subject subject) Set the out security subject.
void	setProperty(java.lang.String name, java.lang.Object obj)
void	setService(javax.xml.namespace.QName service)
void	setStatus(javax.jbi.messaging.ExchangeStatus status)

Field Detail

DEFAULT_FAULT_QNAME

static final javax.xml.namespace.QName DEFAULT_FAULT_QNAME

FAULT_MESSAGE_NAME

static final java.lang.String FAULT_MESSAGE_NAME

See Also:

Constant Field Values

IN_MESSAGE_NAME

static final java.lang.String IN_MESSAGE_NAME

See Also:

Constant Field Values

OUT_MESSAGE_NAME

static final java.lang.String OUT_MESSAGE_NAME

See Also:

Constant Field Values

PROPERTY_PROVIDER_LINKTYPE

static final java.lang.String PROPERTY_PROVIDER_LINKTYPE

See Also:

Constant Field Values

Method Detail

addInMessageAttachment

void addInMessageAttachment(java.lang.String name,
                            javax.activation.DataHandler dataHandler)
                            throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

addOutMessageAttachment

void addOutMessageAttachment(java.lang.String name,
                             javax.activation.DataHandler dataHandler)
                             throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

createFault

javax.jbi.messaging.Fault createFault()
                                      throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

getEndpoint

javax.jbi.servicedesc.ServiceEndpoint getEndpoint()

getEndpointName

java.lang.String getEndpointName()
                                 throws javax.jbi.messaging.MessagingException

Get the endpoint name specified in the message exchange

Returns:

the endpoint name

Throws:

javax.jbi.messaging.MessagingException - if no Endpoint is set

getError

java.lang.Exception getError()

getExchangeId

java.lang.String getExchangeId()

getExchangePattern

java.net.URI getExchangePattern()
                                throws javax.jbi.messaging.MessagingException

Get the message exchange Pattern

Returns:

the URI pattern. Can't be null

Throws:

javax.jbi.messaging.MessagingException - if no message exchange pattern is set

getFault

javax.jbi.messaging.Fault getFault()

Get the exchange fault

Returns:

the exchange fault

getInAddressing

java.util.Map<javax.xml.namespace.QName,java.lang.String> getInAddressing()

Get the addressing data from the IN message. Key is the addressing name (Values are available in Constants.Addressing), value is the URL as String...

Returns:

null if there is no addressing information in the input message

getInMessage

javax.jbi.messaging.NormalizedMessage getInMessage()

Extract incoming NormalizedMessage from given MessageExchange. Create the message if it is null.

Returns:

the incoming NormalizedMessage

getInMessageAttachment

javax.activation.DataHandler getInMessageAttachment(java.lang.String name)
                                                    throws javax.jbi.messaging.MessagingException

Get the "In" attachment matching the given name

Parameters:

name - an attachment name

Returns:

the "In" attachment matching the given name

Throws:

javax.jbi.messaging.MessagingException

getInMessageAttachmentNames

java.util.Set<java.lang.String> getInMessageAttachmentNames()
                                                            throws javax.jbi.messaging.MessagingException

Get all the "In" attachment names

Returns:

the "In" attachment names

Throws:

javax.jbi.messaging.MessagingException

getInMessageAttachments

java.util.Set<javax.activation.DataHandler> getInMessageAttachments()
                                                                    throws javax.jbi.messaging.MessagingException

Get the "In" attachments in a Set

Parameters:

exchange -

Returns:

the "In" attachments in a Set

Throws:

javax.jbi.messaging.MessagingException

getInMessageContentAsDocument

org.w3c.dom.Document getInMessageContentAsDocument()
                                                   throws javax.jbi.messaging.MessagingException

Get the content of the "in" message as a DOM document.
If the Source is a Stream or Document, a fork is processed, which makes the Source still available, but can decreases the performance.

Returns:

the DOM document representation of the "in" message content

Throws:

javax.jbi.messaging.MessagingException - if error occurred during conversion of the Source or if "in" message is null

getInMessageContentAsDocument

org.w3c.dom.Document getInMessageContentAsDocument(boolean forkSource)
                                                   throws javax.jbi.messaging.MessagingException

Get the content of the "in" message as a DOM document.
If the Source is a Stream or Document and forkSource is true, a fork is processed, which makes the Source still available, but can decreases the performance.

Returns:

the DOM document representation of the "in" message content

Throws:

javax.jbi.messaging.MessagingException - if error occurred during conversion of the Source or if "in" message is null

getInMessageContentAsSource

javax.xml.transform.Source getInMessageContentAsSource()
                                                       throws javax.jbi.messaging.MessagingException

Get the content of the "in" message as a Source

Returns:

the "in" message content

Throws:

javax.jbi.messaging.MessagingException - if "in" message is null

getInMessageProperty

java.lang.Object getInMessageProperty(java.lang.String name)
                                      throws javax.jbi.messaging.MessagingException

Parameters:

name -

Returns:

Throws:

javax.jbi.messaging.MessagingException

getInMessagePropertyNames

java.util.Set<java.lang.String> getInMessagePropertyNames()
                                                          throws javax.jbi.messaging.MessagingException

Returns:

Throws:

javax.jbi.messaging.MessagingException

getInSubject

javax.security.auth.Subject getInSubject()
                                         throws javax.jbi.messaging.MessagingException

Get "In" security subject

Returns:

the subject or null if no subject

Throws:

javax.jbi.messaging.MessagingException

getInterfaceName

javax.xml.namespace.QName getInterfaceName()

getOperation

javax.xml.namespace.QName getOperation()

getOperationName

java.lang.String getOperationName()

Get the operation name (local part of the operation QName)

Returns:

the operation name, NULL if no operation is set

getOutMessage

javax.jbi.messaging.NormalizedMessage getOutMessage()

Extract outgoing NormalizedMessage from given MessageExchange. Create the output message if message is null.

Returns:

the outgoing NormalizedMessage

getOutMessageAttachment

javax.activation.DataHandler getOutMessageAttachment(java.lang.String name)
                                                     throws javax.jbi.messaging.MessagingException

Get the "Out" attachment matching the attachment name.

Parameters:

exchange -

Returns:

Throws:

javax.jbi.messaging.MessagingException

getOutMessageAttachmentNames

java.util.Set<java.lang.String> getOutMessageAttachmentNames()
                                                             throws javax.jbi.messaging.MessagingException

Get all the "Out" attachment names.

Returns:

Throws:

javax.jbi.messaging.MessagingException

getOutMessageAttachments

java.util.Set<javax.activation.DataHandler> getOutMessageAttachments()
                                                                     throws javax.jbi.messaging.MessagingException

Get all the "Out" attachments in a Set.

Parameters:

exchange -

Returns:

Throws:

javax.jbi.messaging.MessagingException

getOutMessageContentAsDocument

org.w3c.dom.Document getOutMessageContentAsDocument()
                                                    throws javax.jbi.messaging.MessagingException

Get the content of the "out" message as a DOM document.
If the Source is a Stream or Document, a fork is processed, which makes the Source still available, but can decreases the performance.

Returns:

the DOM document representation of the "in" message content

Throws:

javax.jbi.messaging.MessagingException - if error occurred during conversion of the Source or if "in" message is null

getOutMessageContentAsDocument

org.w3c.dom.Document getOutMessageContentAsDocument(boolean forkSource)
                                                    throws javax.jbi.messaging.MessagingException

Get the content of the "out" message as a DOM document.
If the Source is a Stream or Document and forkSource is true, a fork is processed, which makes the Source still available, but can decreases the performance.

Returns:

the DOM document representation of the "in" message content

Throws:

javax.jbi.messaging.MessagingException - if error occurred during conversion of the Source or if "in" message is null

getOutMessageContentAsSource

javax.xml.transform.Source getOutMessageContentAsSource()
                                                        throws javax.jbi.messaging.MessagingException

Get the content of the "out" message as a Source

Returns:

the "out" message content

Throws:

javax.jbi.messaging.MessagingException - if "out" message is null

getOutMessageProperty

java.lang.Object getOutMessageProperty(java.lang.String name)
                                       throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

getOutMessagePropertyNames

java.util.Set<?> getOutMessagePropertyNames()
                                            throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

getOutSubject

javax.security.auth.Subject getOutSubject()
                                          throws javax.jbi.messaging.MessagingException

Get "Out" security subject

Returns:

the subject or null if no subject

Throws:

javax.jbi.messaging.MessagingException

getPattern

java.net.URI getPattern()

getProperty

java.lang.Object getProperty(java.lang.String name)

getPropertyNames

java.util.Set<?> getPropertyNames()

getRole

javax.jbi.messaging.MessageExchange.Role getRole()

getService

javax.xml.namespace.QName getService()

getStatus

javax.jbi.messaging.ExchangeStatus getStatus()

isActiveStatus

boolean isActiveStatus()

Test if the message status is ACTIVE

Returns:

true if the status is ACTIVE, otherwise false

isConsumerRole

boolean isConsumerRole()

Test if the message role is consumer

Returns:

true is the message role is consumer

isDoneStatus

boolean isDoneStatus()

Test if the message status is DONE

Returns:

true if the status is DONE, otherwise false

isErrorStatus

boolean isErrorStatus()

Test if the message status is ERROR

Returns:

true if the status is ERROR, otherwise false

isInMessage

boolean isInMessage()

Test if an In message is set on the MessageExchange

Returns:

true if an In message is set on the MessageExchange otherwise false

isInOnlyPattern

boolean isInOnlyPattern()

isInOptionalOutPattern

boolean isInOptionalOutPattern()

isInOutPattern

boolean isInOutPattern()

isOutMessage

boolean isOutMessage()

Test if an out message is set on the MessageExchange

Returns:

true if an out message is set on the MessageExchange otherwise false

isProviderRole

boolean isProviderRole()

Test if the message role is provider

Returns:

true is the message role is provider

isRobustInOnlyPattern

boolean isRobustInOnlyPattern()

isTransacted

boolean isTransacted()

setActiveStatus

void setActiveStatus()
                     throws javax.jbi.messaging.MessagingException

Set the message exchange status to ACTIVE

Throws:

javax.jbi.messaging.MessagingException

setDoneStatus

void setDoneStatus()
                   throws javax.jbi.messaging.MessagingException

Set the message exchange status to DONE

Throws:

javax.jbi.messaging.MessagingException

setEndpoint

void setEndpoint(javax.jbi.servicedesc.ServiceEndpoint endpoint)

setError

void setError(java.lang.Exception error)

Put the given exception as Error part of the message exchange. Allowed exception types are : java.*, org.w3c.* and org.xml.*.

setErrorStatus

void setErrorStatus()
                    throws javax.jbi.messaging.MessagingException

Set the message exchange status to Error

Throws:

javax.jbi.messaging.MessagingException

setFault

void setFault(javax.jbi.messaging.Fault fault)
              throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

setFault

void setFault(java.lang.Throwable e)
              throws javax.jbi.messaging.MessagingException

Create a Fault with the given Exception and set it in the MessageExchange

Parameters:

e - the Throwable to transform in Fault

Throws:

javax.jbi.messaging.MessagingException

setInAddressing

void setInAddressing(java.util.Map<javax.xml.namespace.QName,java.lang.String> map)

Set the addressing information in the IN message. An example of map data is organized like this :

• {http://www.w3.org/2005/08/addressing}To = http://localhost:80804/petals/ws/ExampleService
• {http://www.w3.org/2005/08/addressing}ReplyTo = http://localhost:80804/petals/ws/ReplyService

Possible keys can be found in Constants.Addressing and values are the URL as String. If the NormalizedMessage already contains the addressing data, they will be overrided by the input map. If No addressing data is available in the message, the input map will be the addressing data.

Parameters:

map -

setInMessage

void setInMessage(javax.jbi.messaging.NormalizedMessage msg)
                  throws javax.jbi.messaging.MessagingException

Set the input message

Parameters:

msg - the input message

Throws:

javax.jbi.messaging.MessagingException

setInMessageAttachment

void setInMessageAttachment(java.lang.String name,
                            javax.activation.DataHandler attachement)
                            throws javax.jbi.messaging.MessagingException

Put the attachment in the "out" message. If the out normalized message is null, it is created here.

Parameters:

name - the attachment name

attachement - the attachement data handler

Throws:

javax.jbi.messaging.MessagingException

setInMessageAttachments

void setInMessageAttachments(java.util.Map<java.lang.String,javax.activation.DataHandler> attachements)
                             throws javax.jbi.messaging.MessagingException

Put a Map of attachments in the out message of the message exchange. If the out normalized message is null, it is created here.

Parameters:

attachements - the attachments to put in the out message

Throws:

javax.jbi.messaging.MessagingException - if error occurred during out message creation

setInMessageContent

void setInMessageContent(org.w3c.dom.Document inContent)
                         throws javax.jbi.messaging.MessagingException

Put a Source object in the in message of the message exchange. If the in normalized message is null, it is created here.

Parameters:

inContent - the DOM Document content to put in the in message

Throws:

javax.jbi.messaging.MessagingException - if error occurred during in message creation

setInMessageContent

void setInMessageContent(java.io.InputStream inContent)
                         throws javax.jbi.messaging.MessagingException

Put a String object in the in message of the message exchange. If the in normalized message is null, it is created here.

Parameters:

inContent - the Source content to put in the in message

Throws:

javax.jbi.messaging.MessagingException - if error occurred during in message creation

setInMessageContent

void setInMessageContent(javax.xml.transform.Source inContent)
                         throws javax.jbi.messaging.MessagingException

Put a Source object in the in message of the message exchange. If the in normalized message is null, it is created here.

Parameters:

inContent - the Source content to put in the in message

Throws:

javax.jbi.messaging.MessagingException - if error occurred during in message creation

setInMessageProperties

void setInMessageProperties(java.util.Map<java.lang.String,java.lang.Object> properties)
                            throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

setInMessageProperty

void setInMessageProperty(java.lang.String name,
                          java.lang.Object value)
                          throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

setInSubject

void setInSubject(javax.security.auth.Subject subject)

Set the "In" security subject.

Parameters:

the - "In" security subject.

setInterfaceName

void setInterfaceName(javax.xml.namespace.QName interfaceName)

Set the target interface name to invoke the service

Parameters:

interfaceName -

setOperation

void setOperation(javax.xml.namespace.QName name)

Set the message operation

Parameters:

name - the operation (QName)

setOutMessage

void setOutMessage(javax.jbi.messaging.NormalizedMessage msg)
                   throws javax.jbi.messaging.MessagingException

Set the output message

Parameters:

msg - the output message

Throws:

javax.jbi.messaging.MessagingException

setOutMessageAttachment

void setOutMessageAttachment(java.lang.String name,
                             javax.activation.DataHandler attachment)
                             throws javax.jbi.messaging.MessagingException

Put the attachment in the "out" message. If the out normalized message is null, it is created here.

Parameters:

name -

attachment -

Throws:

javax.jbi.messaging.MessagingException

setOutMessageAttachments

void setOutMessageAttachments(java.util.Map<java.lang.String,javax.activation.DataHandler> attachements)
                              throws javax.jbi.messaging.MessagingException

Put a Map of attachments in the "out" message. If the out normalized message is null, it is created here.

Parameters:

attachements - the attachements to put in the out message

Throws:

javax.jbi.messaging.MessagingException - if error occured during out message creation

setOutMessageContent

void setOutMessageContent(org.w3c.dom.Document outContent)
                          throws javax.jbi.messaging.MessagingException

Put a Source object in the out message of the message exchange. If the out normalized message is null, it is created here.

Parameters:

outContent - the DOM document content to put in the out message

Throws:

javax.jbi.messaging.MessagingException - if error occured during out message creation

setOutMessageContent

void setOutMessageContent(java.io.InputStream inContent)
                          throws javax.jbi.messaging.MessagingException

Put a String object in the in message of the message exchange. If the in normalized message is null, it is created here.

Parameters:

inContent - the Source content to put in the in message

Throws:

javax.jbi.messaging.MessagingException - if error occurred during in message creation

setOutMessageContent

void setOutMessageContent(javax.xml.transform.Source outContent)
                          throws javax.jbi.messaging.MessagingException

Put a Source object in the out message of the message exchange. If the out normalized message is null, it is created here.

Parameters:

outContent - the Source content to put in the out message

Throws:

javax.jbi.messaging.MessagingException - if error occured during out message creation

setOutMessageProperties

void setOutMessageProperties(java.util.Map<java.lang.String,java.lang.Object> properties)
                             throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

setOutMessageProperty

void setOutMessageProperty(java.lang.String name,
                           java.lang.Object value)
                           throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

setOutSubject

void setOutSubject(javax.security.auth.Subject subject)

Set the out security subject.

Parameters:

subject - the out security subject

setProperty

void setProperty(java.lang.String name,
                 java.lang.Object obj)

setService

void setService(javax.xml.namespace.QName service)

setStatus

void setStatus(javax.jbi.messaging.ExchangeStatus status)
               throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

getFlowAttributes

javax.jbi.messaging.FlowAttributes getFlowAttributes()

Get the flow attributes of the message exchange

Returns:

the flow attributes of the message exchange