com.sap.cloud.sdk.s4hana.datamodel.messaging.core

Class MessagingVdmConverter

java.lang.Object

com.sap.cloud.sdk.s4hana.datamodel.messaging.core.MessagingVdmConverter

public class MessagingVdmConverter
extends Object

Generic converter for turning plain String topics + payloads into Messaging VDM objects. This relies on MessageFactoryMapper objects to pick the right MessageFactory based on the message topics. Multiple MessageFactoryMapper objects can be configured, and each MessageFactoryMapper can have mappings for the same message topic. In this case, the mapping of the most recently added MessageFactoryMapper is used.

Constructor Summary

Constructors

Constructor and Description
MessagingVdmConverter(MessageFactoryMapper... messageFactoryMappers) Creates a converter instance with the provided MessageFactoryMapper instances.

Method Summary

Modifier and Type	Method and Description
void	addMessageFactoryMappers(MessageFactoryMapper... messageFactoryMappers) Augment existing converter with provided MessageFactoryMapper instances.
Message	fromMessage(String topicName, String payload) Translates original message topics and string payloads into Messaging VDM objects.

Methods inherited from class java.lang.Object

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

Constructor Detail

MessagingVdmConverter

public MessagingVdmConverter(@Nonnull
                             MessageFactoryMapper... messageFactoryMappers)

Creates a converter instance with the provided MessageFactoryMapper instances. Note that in case of duplicate mappings, the one from the right-most MessageFactoryMapper will be used.

Parameters:

messageFactoryMappers - Mapping classes that implement the MessageFactoryMapper interface and map topics to message * factory class names.

Method Detail

addMessageFactoryMappers

public void addMessageFactoryMappers(@Nonnull
                                     MessageFactoryMapper... messageFactoryMappers)

Augment existing converter with provided MessageFactoryMapper instances. Note that in case of duplicate mappings, the one from the right-most MessageFactoryMapper will be used.

Parameters:

messageFactoryMappers - Mapping classes that implement the MessageFactoryMapper interface and map topics to message * factory class names.

fromMessage

@Nonnull
public Message fromMessage(@Nonnull
                                    String topicName,
                                    @Nonnull
                                    String payload)
                             throws MessagingException

Translates original message topics and string payloads into Messaging VDM objects.

Parameters:

topicName - The topic of the original message.

payload - The original message payload.

Returns:

A Messaging VDM object representation of the original message.

Throws:

MessagingException - If there are problems converting the original message into a Messaging VDM object.