Package io.axoniq.framework.messaging.transformation

Record Class TransformationContext

java.lang.Object

java.lang.Record

io.axoniq.framework.messaging.transformation.TransformationContext

Record Components:

entryContext - the Context attached to the source message, carrying its position for use in diagnostics, never null

processingContext - the active unit of work for this transformation, or null when none is active

converter - the converter used to convert the input payload to the transformation's input type, never null

messageTypeResolver - the resolver used to validate the transformed output's message type, never null

@Internal
public record TransformationContext(Context entryContext, @Nullable ProcessingContext processingContext, MessageConverter converter, MessageTypeResolver messageTypeResolver)
extends Record

Immutable per-invocation context handed to a MessageTransformation when it transforms a single message.

It groups two contexts with distinct roles. entryContext is the Context attached to the source message. It is always present and, where the source provides one, carries the message's position for use in diagnostics. processingContext is the active unit of work for the transformation. It is present when the transformation runs inside a unit of work, such as an entity load, and null when none is active, such as while an event stream is being opened.

converter and messageTypeResolver are held as explicit fields rather than read from processingContext, because that context is not always present.

Since:

5.2.0

Author:

Laura Devriendt

Constructor Summary

Constructors

Constructor	Description
TransformationContext(Context entryContext, @Nullable ProcessingContext processingContext, MessageConverter converter, MessageTypeResolver messageTypeResolver)	Creates an instance of a TransformationContext record class.

Method Summary

Modifier and Type	Method	Description
MessageConverter	converter()	Returns the value of the converter record component.
Context	entryContext()	Returns the value of the entryContext record component.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
final int	hashCode()	Returns a hash code value for this object.
MessageTypeResolver	messageTypeResolver()	Returns the value of the messageTypeResolver record component.
@Nullable ProcessingContext	processingContext()	Returns the value of the processingContext record component.
final String	toString()	Returns a string representation of this record class.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

TransformationContext

public TransformationContext(Context entryContext,
 @Nullable ProcessingContext processingContext,
 MessageConverter converter,
 MessageTypeResolver messageTypeResolver)

Creates an instance of a TransformationContext record class.

Parameters:

entryContext - the value for the entryContext record component

processingContext - the value for the processingContext record component

converter - the value for the converter record component

messageTypeResolver - the value for the messageTypeResolver record component

Method Details

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

entryContext

public Context entryContext()

Returns the value of the entryContext record component.

Returns:

the value of the entryContext record component

processingContext

public @Nullable ProcessingContext processingContext()

Returns the value of the processingContext record component.

Returns:

the value of the processingContext record component

converter

public MessageConverter converter()

Returns the value of the converter record component.

Returns:

the value of the converter record component

messageTypeResolver

public MessageTypeResolver messageTypeResolver()

Returns the value of the messageTypeResolver record component.

Returns:

the value of the messageTypeResolver record component