org.apache.camel.impl

Class DefaultExchange

java.lang.Object

org.apache.camel.impl.DefaultExchange

All Implemented Interfaces:

Exchange

public final class DefaultExchange
extends Object
implements Exchange

A default implementation of Exchange

Version:

Field Summary

Fields

Modifier and Type	Field and Description
protected CamelContext	context

Fields inherited from interface org.apache.camel.Exchange

ACCEPT_CONTENT_TYPE, AGGREGATED_COMPLETED_BY, AGGREGATED_CORRELATION_KEY, AGGREGATED_SIZE, AGGREGATED_TIMEOUT, AGGREGATION_COMPLETE_ALL_GROUPS, AGGREGATION_COMPLETE_ALL_GROUPS_INCLUSIVE, AGGREGATION_STRATEGY, ASYNC_WAIT, AUTHENTICATION, AUTHENTICATION_FAILURE_POLICY_ID, BATCH_COMPLETE, BATCH_INDEX, BATCH_SIZE, BEAN_METHOD_NAME, BEAN_MULTI_PARAMETER_ARRAY, BINDING, BREADCRUMB_ID, CHARSET_NAME, CONTENT_ENCODING, CONTENT_LENGTH, CONTENT_TYPE, CORRELATION_ID, CREATED_TIMESTAMP, DATASET_INDEX, DEFAULT_CHARSET_PROPERTY, DESTINATION_OVERRIDE_URL, DISABLE_HTTP_STREAM_CACHE, DOCUMENT_BUILDER_FACTORY, DUPLICATE_MESSAGE, ERRORHANDLER_HANDLED, EVALUATE_EXPRESSION_RESULT, EXCEPTION_CAUGHT, EXCEPTION_HANDLED, EXTERNAL_REDELIVERED, FAILURE_ENDPOINT, FAILURE_HANDLED, FAILURE_ROUTE_ID, FILE_LAST_MODIFIED, FILE_LENGTH, FILE_LOCAL_WORK_PATH, FILE_LOCK_EXCLUSIVE_LOCK, FILE_LOCK_FILE_ACQUIRED, FILE_LOCK_FILE_NAME, FILE_LOCK_RANDOM_ACCESS_FILE, FILE_NAME, FILE_NAME_CONSUMED, FILE_NAME_ONLY, FILE_NAME_PRODUCED, FILE_PARENT, FILE_PATH, FILTER_MATCHED, FILTER_NON_XML_CHARS, GROUPED_EXCHANGE, HTTP_BASE_URI, HTTP_CHARACTER_ENCODING, HTTP_CHUNKED, HTTP_METHOD, HTTP_PATH, HTTP_PROTOCOL_VERSION, HTTP_QUERY, HTTP_RAW_QUERY, HTTP_RESPONSE_CODE, HTTP_SERVLET_REQUEST, HTTP_SERVLET_RESPONSE, HTTP_URI, HTTP_URL, INTERCEPT_SEND_TO_ENDPOINT_WHEN_MATCHED, INTERCEPTED_ENDPOINT, LANGUAGE_SCRIPT, LOG_DEBUG_BODY_MAX_CHARS, LOG_DEBUG_BODY_STREAMS, LOOP_INDEX, LOOP_SIZE, MAXIMUM_CACHE_POOL_SIZE, MAXIMUM_ENDPOINT_CACHE_SIZE, MESSAGE_HISTORY, MULTICAST_COMPLETE, MULTICAST_INDEX, NOTIFY_EVENT, ON_COMPLETION, OVERRULE_FILE_NAME, PARENT_UNIT_OF_WORK, RECEIVED_TIMESTAMP, RECIPIENT_LIST_ENDPOINT, REDELIVERED, REDELIVERY_COUNTER, REDELIVERY_DELAY, REDELIVERY_EXHAUSTED, REDELIVERY_MAX_COUNTER, ROLLBACK_ONLY, ROLLBACK_ONLY_LAST, ROUTE_STOP, SAXPARSER_FACTORY, SKIP_GZIP_ENCODING, SKIP_WWW_FORM_URLENCODED, SLIP_ENDPOINT, SOAP_ACTION, SPLIT_COMPLETE, SPLIT_INDEX, SPLIT_SIZE, STREAM_CACHE_UNIT_OF_WORK, TIMER_COUNTER, TIMER_FIRED_TIME, TIMER_NAME, TIMER_PERIOD, TIMER_TIME, TO_ENDPOINT, TRACE_EVENT, TRACE_EVENT_EXCHANGE, TRACE_EVENT_NODE_ID, TRACE_EVENT_TIMESTAMP, TRANSFER_ENCODING, TRY_ROUTE_BLOCK, UNIT_OF_WORK_EXHAUSTED, UNIT_OF_WORK_PROCESS_SYNC, XSLT_ERROR, XSLT_FATAL_ERROR, XSLT_FILE_NAME, XSLT_WARNING

Constructor Summary

Constructors

Constructor and Description
DefaultExchange(CamelContext context)
DefaultExchange(CamelContext context, ExchangePattern pattern)
DefaultExchange(Endpoint fromEndpoint)
DefaultExchange(Endpoint fromEndpoint, ExchangePattern pattern)
DefaultExchange(Exchange parent)

Method Summary

Methods

Modifier and Type	Method and Description
void	addOnCompletion(Synchronization onCompletion) Adds a Synchronization to be invoked as callback when this exchange is completed.
protected void	configureMessage(Message message) Configures the message after it has been set on the exchange
boolean	containsOnCompletion(Synchronization onCompletion) Checks if the passed Synchronization instance is already contained on this exchange.
Exchange	copy() Creates a copy of the current message exchange so that it can be forwarded to another destination
protected String	createExchangeId()
CamelContext	getContext() Returns the container so that a processor can resolve endpoints from URIs
Exception	getException() Returns the exception associated with this exchange
<T> T	getException(Class<T> type) Returns the exception associated with this exchange.
String	getExchangeId() Returns the exchange id (unique)
Endpoint	getFromEndpoint() Returns the endpoint which originated this message exchange if a consumer on an endpoint created the message exchange, otherwise this property will be null
String	getFromRouteId() Returns the route id which originated this message exchange if a route consumer on an endpoint created the message exchange, otherwise this property will be null
Message	getIn() Returns the inbound request message
<T> T	getIn(Class<T> type) Returns the inbound request message as the given type
Message	getOut() Returns the outbound message, lazily creating one if one has not already been associated with this exchange.
<T> T	getOut(Class<T> type) Returns the outbound request message as the given type Important: If you want to change the current message, then use Exchange.getIn() instead as it will ensure headers etc.
ExchangePattern	getPattern() Returns the ExchangePattern (MEP) of this exchange.
Map<String,Object>	getProperties() Returns all of the properties associated with the exchange
Object	getProperty(String name) Returns a property associated with this exchange by name
<T> T	getProperty(String name, Class<T> type) Returns a property associated with this exchange by name and specifying the type required
Object	getProperty(String name, Object defaultValue) Returns a property associated with this exchange by name
<T> T	getProperty(String name, Object defaultValue, Class<T> type) Returns a property associated with this exchange by name and specifying the type required
UnitOfWork	getUnitOfWork() Returns the unit of work that this exchange belongs to; which may map to zero, one or more physical transactions
List<Synchronization>	handoverCompletions() Handover all the on completions from this exchange
void	handoverCompletions(Exchange target) Handover all the on completions from this exchange to the target exchange.
boolean	hasOut() Returns whether an OUT message has been set or not.
boolean	hasProperties() Returns whether any properties has been set
Boolean	isExternalRedelivered() Returns true if this exchange is an external initiated redelivered message (such as a JMS broker).
boolean	isFailed() Returns true if this exchange failed due to either an exception or fault
boolean	isRollbackOnly() Returns true if this exchange is marked for rollback
boolean	isTransacted() Returns true if this exchange is transacted
Object	removeProperty(String name) Removes the given property on the exchange
void	setException(Throwable t) Sets the exception associated with this exchange Camel will wrap Throwable into Exception type to accommodate for the Exchange.getException() method returning a plain Exception type.
void	setExchangeId(String id) Set the exchange id
void	setFromEndpoint(Endpoint fromEndpoint) Sets the endpoint which originated this message exchange.
void	setFromRouteId(String fromRouteId) Sets the route id which originated this message exchange.
void	setIn(Message in) Sets the inbound message instance
void	setOut(Message out) Sets the outbound message
void	setPattern(ExchangePattern pattern) Allows the ExchangePattern (MEP) of this exchange to be customized.
void	setProperties(Map<String,Object> properties)
void	setProperty(String name, Object value) Sets a property on the exchange
void	setUnitOfWork(UnitOfWork unitOfWork) Sets the unit of work that this exchange belongs to; which may map to zero, one or more physical transactions
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

context

protected final CamelContext context

Constructor Detail

DefaultExchange

public DefaultExchange(CamelContext context)

DefaultExchange

public DefaultExchange(CamelContext context,
               ExchangePattern pattern)

DefaultExchange

public DefaultExchange(Exchange parent)

DefaultExchange

public DefaultExchange(Endpoint fromEndpoint)

DefaultExchange

public DefaultExchange(Endpoint fromEndpoint,
               ExchangePattern pattern)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

copy

public Exchange copy()

Description copied from interface: Exchange

Creates a copy of the current message exchange so that it can be forwarded to another destination

Specified by:

copy in interface Exchange

getContext

public CamelContext getContext()

Description copied from interface: Exchange

Returns the container so that a processor can resolve endpoints from URIs

Specified by:

getContext in interface Exchange

Returns:

the container which owns this exchange

getProperty

public Object getProperty(String name)

Description copied from interface: Exchange

Returns a property associated with this exchange by name

Specified by:

getProperty in interface Exchange

Parameters:

name - the name of the property

Returns:

the value of the given property or null if there is no property for the given name

getProperty

public Object getProperty(String name,
                 Object defaultValue)

Description copied from interface: Exchange

Returns a property associated with this exchange by name

Specified by:

getProperty in interface Exchange

Parameters:

name - the name of the property

defaultValue - the default value to return if property was absent

Returns:

the value of the given property or defaultValue if there is no property for the given name

getProperty

public <T> T getProperty(String name,
                Class<T> type)

Description copied from interface: Exchange

Returns a property associated with this exchange by name and specifying the type required

Specified by:

getProperty in interface Exchange

Parameters:

name - the name of the property

type - the type of the property

Returns:

the value of the given property or null if there is no property for the given name or null if it cannot be converted to the given type

getProperty

public <T> T getProperty(String name,
                Object defaultValue,
                Class<T> type)

Description copied from interface: Exchange

Returns a property associated with this exchange by name and specifying the type required

Specified by:

getProperty in interface Exchange

Parameters:

name - the name of the property

defaultValue - the default value to return if property was absent

type - the type of the property

Returns:

the value of the given property or defaultValue if there is no property for the given name or null if it cannot be converted to the given type

setProperty

public void setProperty(String name,
               Object value)

Description copied from interface: Exchange

Sets a property on the exchange

Specified by:

setProperty in interface Exchange

Parameters:

name - of the property

value - to associate with the name

removeProperty

public Object removeProperty(String name)

Description copied from interface: Exchange

Removes the given property on the exchange

Specified by:

removeProperty in interface Exchange

Parameters:

name - of the property

Returns:

the old value of the property

getProperties

public Map<String,Object> getProperties()

Description copied from interface: Exchange

Returns all of the properties associated with the exchange

Specified by:

getProperties in interface Exchange

Returns:

all the headers in a Map

hasProperties

public boolean hasProperties()

Description copied from interface: Exchange

Returns whether any properties has been set

Specified by:

hasProperties in interface Exchange

Returns:

true if any properties has been set

setProperties

public void setProperties(Map<String,Object> properties)

getIn

public Message getIn()

Description copied from interface: Exchange

Returns the inbound request message

Specified by:

getIn in interface Exchange

Returns:

the message

getIn

public <T> T getIn(Class<T> type)

Description copied from interface: Exchange

Returns the inbound request message as the given type

Specified by:

getIn in interface Exchange

Parameters:

type - the given type

Returns:

the message as the given type or null if not possible to covert to given type

setIn

public void setIn(Message in)

Description copied from interface: Exchange

Sets the inbound message instance

Specified by:

setIn in interface Exchange

Parameters:

in - the inbound message

getOut

public Message getOut()

Description copied from interface: Exchange

Returns the outbound message, lazily creating one if one has not already been associated with this exchange.

Important: If you want to change the current message, then use Exchange.getIn() instead as it will ensure headers etc. is kept and propagated when routing continues. Bottom line end users should rarely use this method.

If you want to test whether an OUT message have been set or not, use the Exchange.hasOut() method.

See also the class java doc for this Exchange for more details and this FAQ entry.

Specified by:

getOut in interface Exchange

Returns:

the response

See Also:

Exchange.getIn()

getOut

public <T> T getOut(Class<T> type)

Description copied from interface: Exchange

Returns the outbound request message as the given type

Important: If you want to change the current message, then use Exchange.getIn() instead as it will ensure headers etc. is kept and propagated when routing continues. Bottom line end users should rarely use this method.

If you want to test whether an OUT message have been set or not, use the Exchange.hasOut() method.

See also the class java doc for this Exchange for more details and this FAQ entry.

Specified by:

getOut in interface Exchange

Parameters:

type - the given type

Returns:

the message as the given type or null if not possible to covert to given type

See Also:

Exchange.getIn(Class)

hasOut

public boolean hasOut()

Description copied from interface: Exchange

Returns whether an OUT message has been set or not.

Specified by:

hasOut in interface Exchange

Returns:

true if an OUT message exists, false otherwise.

setOut

public void setOut(Message out)

Description copied from interface: Exchange

Sets the outbound message

Specified by:

setOut in interface Exchange

Parameters:

out - the outbound message

getException

public Exception getException()

Description copied from interface: Exchange

Returns the exception associated with this exchange

Specified by:

getException in interface Exchange

Returns:

the exception (or null if no faults)

getException

public <T> T getException(Class<T> type)

Description copied from interface: Exchange

Returns the exception associated with this exchange.

Is used to get the caused exception that typically have been wrapped in some sort of Camel wrapper exception

The strategy is to look in the exception hierarchy to find the first given cause that matches the type. Will start from the bottom (the real cause) and walk upwards.

Specified by:

getException in interface Exchange

Parameters:

type - the exception type

Returns:

the exception (or null if no caused exception matched)

setException

public void setException(Throwable t)

Description copied from interface: Exchange

Sets the exception associated with this exchange

Camel will wrap Throwable into Exception type to accommodate for the Exchange.getException() method returning a plain Exception type.

Specified by:

setException in interface Exchange

Parameters:

t - the caused exception

getPattern

public ExchangePattern getPattern()

Description copied from interface: Exchange

Returns the ExchangePattern (MEP) of this exchange.

Specified by:

getPattern in interface Exchange

Returns:

the message exchange pattern of this exchange

setPattern

public void setPattern(ExchangePattern pattern)

Description copied from interface: Exchange

Allows the ExchangePattern (MEP) of this exchange to be customized. This typically won't be required as an exchange can be created with a specific MEP by calling Endpoint.createExchange(ExchangePattern) but it is here just in case it is needed.

Specified by:

setPattern in interface Exchange

Parameters:

pattern - the pattern

getFromEndpoint

public Endpoint getFromEndpoint()

Description copied from interface: Exchange

Returns the endpoint which originated this message exchange if a consumer on an endpoint created the message exchange, otherwise this property will be null

Specified by:

getFromEndpoint in interface Exchange

setFromEndpoint

public void setFromEndpoint(Endpoint fromEndpoint)

Description copied from interface: Exchange

Sets the endpoint which originated this message exchange. This method should typically only be called by Endpoint implementations

Specified by:

setFromEndpoint in interface Exchange

Parameters:

fromEndpoint - the endpoint which is originating this message exchange

getFromRouteId

public String getFromRouteId()

Description copied from interface: Exchange

Returns the route id which originated this message exchange if a route consumer on an endpoint created the message exchange, otherwise this property will be null

Specified by:

getFromRouteId in interface Exchange

setFromRouteId

public void setFromRouteId(String fromRouteId)

Description copied from interface: Exchange

Sets the route id which originated this message exchange. This method should typically only be called by the internal framework.

Specified by:

setFromRouteId in interface Exchange

Parameters:

fromRouteId - the from route id

getExchangeId

public String getExchangeId()

Description copied from interface: Exchange

Returns the exchange id (unique)

Specified by:

getExchangeId in interface Exchange

setExchangeId

public void setExchangeId(String id)

Description copied from interface: Exchange

Set the exchange id

Specified by:

setExchangeId in interface Exchange

isFailed

public boolean isFailed()

Description copied from interface: Exchange

Returns true if this exchange failed due to either an exception or fault

Specified by:

isFailed in interface Exchange

Returns:

true if this exchange failed due to either an exception or fault

See Also:

Exchange.getException(), Message.setFault(boolean), Message.isFault()

isTransacted

public boolean isTransacted()

Description copied from interface: Exchange

Returns true if this exchange is transacted

Specified by:

isTransacted in interface Exchange

isExternalRedelivered

public Boolean isExternalRedelivered()

Description copied from interface: Exchange

Returns true if this exchange is an external initiated redelivered message (such as a JMS broker).

Important: It is not always possible to determine if the message is a redelivery or not, and therefore null is returned. Such an example would be a JDBC message. However JMS brokers provides details if a message is redelivered.

Specified by:

isExternalRedelivered in interface Exchange

Returns:

true if redelivered, false if not, null if not able to determine

isRollbackOnly

public boolean isRollbackOnly()

Description copied from interface: Exchange

Returns true if this exchange is marked for rollback

Specified by:

isRollbackOnly in interface Exchange

getUnitOfWork

public UnitOfWork getUnitOfWork()

Description copied from interface: Exchange

Returns the unit of work that this exchange belongs to; which may map to zero, one or more physical transactions

Specified by:

getUnitOfWork in interface Exchange

setUnitOfWork

public void setUnitOfWork(UnitOfWork unitOfWork)

Description copied from interface: Exchange

Sets the unit of work that this exchange belongs to; which may map to zero, one or more physical transactions

Specified by:

setUnitOfWork in interface Exchange

addOnCompletion

public void addOnCompletion(Synchronization onCompletion)

Description copied from interface: Exchange

Adds a Synchronization to be invoked as callback when this exchange is completed.

Specified by:

addOnCompletion in interface Exchange

Parameters:

onCompletion - the callback to invoke on completion of this exchange

containsOnCompletion

public boolean containsOnCompletion(Synchronization onCompletion)

Description copied from interface: Exchange

Checks if the passed Synchronization instance is already contained on this exchange.

Specified by:

containsOnCompletion in interface Exchange

Parameters:

onCompletion - the callback instance that is being checked for

Returns:

true, if callback instance is already contained on this exchange, else false

handoverCompletions

public void handoverCompletions(Exchange target)

Description copied from interface: Exchange

Handover all the on completions from this exchange to the target exchange.

Specified by:

handoverCompletions in interface Exchange

Parameters:

target - the target exchange

handoverCompletions

public List<Synchronization> handoverCompletions()

Description copied from interface: Exchange

Handover all the on completions from this exchange

Specified by:

handoverCompletions in interface Exchange

Returns:

the on completions

configureMessage

protected void configureMessage(Message message)

Configures the message after it has been set on the exchange

createExchangeId

protected String createExchangeId()