ObjectMessage (Java EE 5 SDK)

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javax.jms
Interface ObjectMessage

All Superinterfaces:: Message

public interface ObjectMessage
extends Message
extends Message

An ObjectMessage object is used to send a message that contains a serializable object in the Java programming language ("Java object"). It inherits from the Message interface and adds a body containing a single reference to an object. Only Serializable Java objects can be used.

If a collection of Java objects must be sent, one of the Collection classes provided since JDK 1.2 can be used.

When a client receives an ObjectMessage, it is in read-only mode. If a client attempts to write to the message at this point, a MessageNotWriteableException is thrown. If clearBody is called, the message can now be both read from and written to.

Version:: 1.0 - 6 August 1998
Author:: Mark Hapner, Rich Burridge
See Also:: Session.createObjectMessage(), Session.createObjectMessage(Serializable), BytesMessage, MapMessage, Message, StreamMessage, TextMessage

Field Summary

Fields inherited from interface javax.jms.Message
`DEFAULT_DELIVERY_MODE, DEFAULT_PRIORITY, DEFAULT_TIME_TO_LIVE`

Method Summary
`Serializable`	`getObject()` Gets the serializable object containing this message's data.
`void`	`setObject(Serializable object)` Sets the serializable object containing this message's data.

Methods inherited from interface javax.jms.Message
acknowledge, clearBody, clearProperties, getBooleanProperty, getByteProperty, getDoubleProperty, getFloatProperty, getIntProperty, getJMSCorrelationID, getJMSCorrelationIDAsBytes, getJMSDeliveryMode, getJMSDestination, getJMSExpiration, getJMSMessageID, getJMSPriority, getJMSRedelivered, getJMSReplyTo, getJMSTimestamp, getJMSType, getLongProperty, getObjectProperty, getPropertyNames, getShortProperty, getStringProperty, propertyExists, setBooleanProperty, setByteProperty, setDoubleProperty, setFloatProperty, setIntProperty, setJMSCorrelationID, setJMSCorrelationIDAsBytes, setJMSDeliveryMode, setJMSDestination, setJMSExpiration, setJMSMessageID, setJMSPriority, setJMSRedelivered, setJMSReplyTo, setJMSTimestamp, setJMSType, setLongProperty, setObjectProperty, setShortProperty, setStringProperty

Methods inherited from interface javax.jms.Message

acknowledge, clearBody, clearProperties, getBooleanProperty, getByteProperty, getDoubleProperty, getFloatProperty, getIntProperty, getJMSCorrelationID, getJMSCorrelationIDAsBytes, getJMSDeliveryMode, getJMSDestination, getJMSExpiration, getJMSMessageID, getJMSPriority, getJMSRedelivered, getJMSReplyTo, getJMSTimestamp, getJMSType, getLongProperty, getObjectProperty, getPropertyNames, getShortProperty, getStringProperty, propertyExists, setBooleanProperty, setByteProperty, setDoubleProperty, setFloatProperty, setIntProperty, setJMSCorrelationID, setJMSCorrelationIDAsBytes, setJMSDeliveryMode, setJMSDestination, setJMSExpiration, setJMSMessageID, setJMSPriority, setJMSRedelivered, setJMSReplyTo, setJMSTimestamp, setJMSType, setLongProperty, setObjectProperty, setShortProperty, setStringProperty

Method Detail

setObject

void setObject(Serializable object)
 throws JMSException

Sets the serializable object containing this message's data. It is important to note that an ObjectMessage contains a snapshot of the object at the time setObject() is called; subsequent modifications of the object will have no effect on the ObjectMessage body.

Parameters:: object - the message's data
Throws:: JMSException - if the JMS provider fails to set the object due to some internal error.; MessageFormatException - if object serialization fails.; MessageNotWriteableException - if the message is in read-only mode.

getObject

Serializable getObject()
 throws JMSException

Gets the serializable object containing this message's data. The default value is null.

Returns:: the serializable object containing this message's data
Throws:: JMSException - if the JMS provider fails to get the object due to some internal error.; MessageFormatException - if object deserialization fails.