MessageContext (Mule Core 4.0.0-BETA.4 API)

```
public class MessageContext
extends Object
```
Exposes information about the current Mule message:
correlationId The message correlationId.
correlationSequence The message correlation sequence number.
correlationGroupSize The message correlation group size.
dataType The message data type (org.mule.runtime.core.api.transformer.DataType).
replyTo The message reply to destination. (mutable)
payload The message payload (mutable). You can also use message.payloadAs(Class clazz). Note: If the message payload is NullPayload, this method will return null (from 3.4)
inboundProperties Map of inbound message properties (immutable).
outboundProperties Map of outbound message properties.
inboundAttachements Map of inbound message attachments (immutable).
outboundAttachements Map of outbound message attachments.

Constructors
Constructor and Description
`MessageContext(Event event, Event.Builder eventBuilder, MuleContext muleContext)`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Object`	`getAttributes()`
`org.mule.runtime.api.metadata.DataType`	`getAttributesDataType()`
`int`	`getCorrelationGroupSize()`
`String`	`getCorrelationId()`
`int`	`getCorrelationSequence()`
`org.mule.runtime.api.metadata.DataType`	`getDataType()`
`Map<String,DataHandler>`	`getInboundAttachments()`
`Map<String,Serializable>`	`getInboundProperties()`
`Map<String,DataHandler>`	`getOutboundAttachments()`
`Map<String,Serializable>`	`getOutboundProperties()`
`Object`	`getPayload()`
`<T> T`	`payloadAs(Class<T> type)` Obtains the payload of the current message transformed to the given #type.
`Object`	`payloadAs(org.mule.runtime.api.metadata.DataType dataType)` Obtains the payload of the current message transformed to the given #dataType.
`void`	`setPayload(Object payload)`
`String`	`toString()`

public MessageContext(Event event,
                      Event.Builder eventBuilder,
                      MuleContext muleContext)

public org.mule.runtime.api.metadata.DataType getDataType()

public void setPayload(Object payload)

public Map<String,Serializable> getInboundProperties()

public Map<String,Serializable> getOutboundProperties()

public Map<String,DataHandler> getInboundAttachments()

public Map<String,DataHandler> getOutboundAttachments()

public org.mule.runtime.api.metadata.DataType getAttributesDataType()

Class MessageContext