Package org.apache.camel.support

Class DefaultMessage

java.lang.Object

org.apache.camel.support.MessageSupport

org.apache.camel.support.DefaultMessage

All Implemented Interfaces:

org.apache.camel.CamelContextAware, org.apache.camel.Message, org.apache.camel.spi.DataTypeAware

public class DefaultMessage
extends MessageSupport

The default implementation of Message

This implementation uses a CaseInsensitiveMap storing the headers. This allows us to be able to lookup headers using case insensitive keys, making it easier for end users as they do not have to be worried about using exact keys. See more details at CaseInsensitiveMap. The implementation of the map can be configured by the HeadersMapFactory which can be set on the CamelContext. The default implementation uses the CaseInsensitiveMap.

Constructor Summary

Constructors

Constructor	Description
DefaultMessage(org.apache.camel.CamelContext camelContext)
DefaultMessage(org.apache.camel.Exchange exchange)

Method Summary

Modifier and Type	Method	Description
protected Map<String,Object>	createHeaders()	A factory method to lazily create the headers to make it easy to create efficient Message implementations which only construct and populate the Map on demand
Object	getHeader(String name)
<T> T	getHeader(String name, Class<T> type)
Object	getHeader(String name, Object defaultValue)
<T> T	getHeader(String name, Object defaultValue, Class<T> type)
Object	getHeader(String name, Supplier<Object> defaultValueSupplier)
<T> T	getHeader(String name, Supplier<Object> defaultValueSupplier, Class<T> type)
Map<String,Object>	getHeaders()
boolean	hasHeaders()
protected boolean	hasPopulatedHeaders()	Returns true if the headers have been mutated in some way
protected Boolean	isTransactedRedelivered()	A strategy for component specific messages to determine whether the message is redelivered or not.
DefaultMessage	newInstance()	Returns a new instance
protected void	populateInitialHeaders(Map<String,Object> map)	A strategy method populate the initial set of headers on an inbound message from an underlying binding
Object	removeHeader(String name)
boolean	removeHeaders(String pattern)
boolean	removeHeaders(String pattern, String... excludePatterns)
void	reset()
void	setHeader(String name, Object value)
void	setHeaders(Map<String,Object> headers)

Methods inherited from class org.apache.camel.support.MessageSupport

copy, copyFrom, copyFromWithNewBody, createBody, createMessageId, getBody, getBody, getBody, getCamelContext, getDataType, getExchange, getMandatoryBody, getMandatoryBody, getMessageId, getMessageTimestamp, hasDataType, hasMessageId, setBody, setBody, setBody, setCamelContext, setDataType, setExchange, setMessageId, toString

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultMessage

public DefaultMessage(org.apache.camel.Exchange exchange)

DefaultMessage

public DefaultMessage(org.apache.camel.CamelContext camelContext)

Method Details

reset

public void reset()

Specified by:

reset in interface org.apache.camel.Message

Overrides:

reset in class MessageSupport

getHeader

public Object getHeader(String name)

getHeader

public Object getHeader(String name,
 Object defaultValue)

getHeader

public Object getHeader(String name,
 Supplier<Object> defaultValueSupplier)

getHeader

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

getHeader

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

getHeader

public <T> T getHeader(String name,
 Supplier<Object> defaultValueSupplier,
 Class<T> type)

setHeader

public void setHeader(String name,
 Object value)

removeHeader

public Object removeHeader(String name)

removeHeaders

public boolean removeHeaders(String pattern)

removeHeaders

public boolean removeHeaders(String pattern,
 String... excludePatterns)

getHeaders

public Map<String,Object> getHeaders()

setHeaders

public void setHeaders(Map<String,Object> headers)

hasHeaders

public boolean hasHeaders()

newInstance

public DefaultMessage newInstance()

Description copied from class: MessageSupport

Returns a new instance

Specified by:

newInstance in class MessageSupport

createHeaders

protected Map<String,Object> createHeaders()

A factory method to lazily create the headers to make it easy to create efficient Message implementations which only construct and populate the Map on demand

Returns:

return a newly constructed Map possibly containing headers from the underlying inbound transport

populateInitialHeaders

protected void populateInitialHeaders(Map<String,Object> map)

A strategy method populate the initial set of headers on an inbound message from an underlying binding

Parameters:

map - is the empty header map to populate

isTransactedRedelivered

protected Boolean isTransactedRedelivered()

A strategy for component specific messages to determine whether the message is redelivered or not.

Important: It is not always possible to determine if the transacted 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 transacted message is redelivered.

Returns:

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

hasPopulatedHeaders

protected boolean hasPopulatedHeaders()

Returns true if the headers have been mutated in some way