| [[ExchangePattern-ExchangePattern]] |
| = Exchange Pattern |
| |
| There are many different _Message Exchange Patterns_ you can use in |
| messaging. This concept is also demonstrated in WSDL and JBI's MEPs. |
| |
| From there xref:enterprise-integration-patterns.adoc[Enterprise |
| Integration Patterns] the common examples are |
| |
| * Request Reply |
| * Event Message (or one way) |
| |
| In Camel we have an |
| `org.apache.camel.ExchangePattern` |
| enumeration which can be configured on the *exchangePattern* property on |
| the Message Exchange indicating if a message |
| exchange is a one way Event Message (InOnly) or |
| a Request Reply message exchange (InOut). |
| |
| For example to override the default pattern on a xref:components::jms-component.adoc[JMS] |
| endpoint you could use this URI |
| |
| [source,java] |
| --------------------------------- |
| jms:MyQueue?exchangePattern=InOut |
| --------------------------------- |
