JmsHeaders (Mule JMS Extension 4.0.0-M5.1 API)

```
public interface JmsHeaders
```
JMS header fields contain values used by both clients and providers to identify and route messages. A message's complete header is transmitted to all JMS clients that receive the message.

Since:

4.0

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`String`	`getJMSCorrelationID()` Used to link one message with another.
`Integer`	`getJMSDeliveryMode()`
`Long`	`getJMSDeliveryTime()` Present only in JMS 2.0 Messages
`JmsDestination`	`getJMSDestination()`
`Long`	`getJMSExpiration()` JMS provider calculates its expiration time by adding the `timeToLive` value specified on the send method to the time the message was sent (for transacted sends, this is the time the client sends the message, not the time the transaction is committed)
`String`	`getJMSMessageID()`
`Integer`	`getJMSPriority()` JMS defines a ten level priority value with 0 as the lowest priority and 9 as the highest.
`Boolean`	`getJMSRedelivered()` If `true`, it is likely, but not guaranteed, that this message was delivered but not acknowledged in the past.
`JmsDestination`	`getJMSReplyTo()`
`Long`	`getJMSTimestamp()`
`String`	`getJMSType()`

- Method Detail
  - getJMSDestination
```
JmsDestination getJMSDestination()
```
    Returns:
    
    the destination to which the message is being sent
  - getJMSDeliveryMode
```
Integer getJMSDeliveryMode()
```
    Returns:
    
    the delivery mode specified when the message was sent, which can be either DeliveryMode.PERSISTENT or DeliveryMode.NON_PERSISTENT
  - getJMSExpiration
```
Long getJMSExpiration()
```
    JMS provider calculates its expiration time by adding the timeToLive value specified on the send method to the time the message was sent (for transacted sends, this is the time the client sends the message, not the time the transaction is committed)
    If the timeToLive is specified as zero, the message's expiration time is set to zero to indicate that the message does not expire.
    
    Returns:
    
    the message's expiration time or zero if the message does not expire
  - getJMSDeliveryTime
```
Long getJMSDeliveryTime()
```
    Present only in JMS 2.0 Messages
    JMS provider calculates its delivery time by adding the deliveryDelay value specified on the send method to the time the message was sent (for transacted sends, this is the time the client sends the message, not the time the transaction is committed).
    A message's delivery time is the earliest time when a provider may make the message visible on the target destination and available for delivery to consumers.
    
    Returns:
    
    the message's delivery time or zero if no deliveryDelay was set
  - getJMSPriority
```
Integer getJMSPriority()
```
    JMS defines a ten level priority value with 0 as the lowest priority and 9 as the highest. In addition, clients should consider priorities 0-4 as gradations of normal priority and priorities 5-9 as gradations of expedited priority.
    JMS does not require that a provider strictly implement priority ordering of messages; however, it should do its best to deliver expedited messages ahead of normal messages.
    
    Returns:
    
    the message priority level.
  - getJMSMessageID
```
String getJMSMessageID()
```
    Returns:
    
    a value that uniquely identifies each message sent by a provider. If the Producer was hinted to disableMessageID, then null is returned.
  - getJMSTimestamp
```
Long getJMSTimestamp()
```
    Returns:
    
    he time a message was handed off to a provider to be sent. It is not the time the message was actually transmitted because the actual send may occur later due to transactions or other client side queueing of messages.
    If the Producer was hinted to disableMessageTimestamp, then zero is returned.
  - getJMSCorrelationID
```
String getJMSCorrelationID()
```
    Used to link one message with another. A typical use is to link a response message with its request message, using its messageID
    
    Returns:
    
    the message correlationId
  - getJMSReplyTo
```
JmsDestination getJMSReplyTo()
```
    Returns:
    
    the name of the Destination supplied by a client when a message is sent, where a reply to the message should be sent. If no replyTo destination was set, then null is returned.
  - getJMSType
```
String getJMSType()
```
    Returns:
    
    a message type identifier supplied by a client when a message is sent.
  - getJMSRedelivered
```
Boolean getJMSRedelivered()
```
    If true, it is likely, but not guaranteed, that this message was delivered but not acknowledged in the past. Relates to the JMSXDeliveryCount message property.
    
    Returns:
    
    true if the message may have been delivered in the past

Interface JmsHeaders

Method Summary

Method Detail

getJMSDestination

getJMSDeliveryMode

getJMSExpiration

getJMSDeliveryTime

getJMSPriority

getJMSMessageID

getJMSTimestamp

getJMSCorrelationID

getJMSReplyTo

getJMSType

getJMSRedelivered