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6.2. Provider Marshalers
Overview 复制链接链接已复制到粘贴板!
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Providers use an implementation of the
org.apache.servicemix.jms.endpoints.JmsProviderMarshaler
interface to convert normalized messages into JMS messages. The marshaler also converts the incoming reply from a JMS message into a normalized message. The JMS binding component comes with two provider marshaler implementations:
DefaultProviderMarshaler
- The
DefaultProviderMarshaler
class provides the marshaler used by generic provider endpoints. JmsSoapProviderMarshaler
- The
JmsSoapProviderMarshaler
class provides the marshaler used by SOAP provider endpoints.NoteThe default SOAP marshaler does not support the full range of SOAP messages nor does it support marshaling map based messages into JMS messages.
When the default provider marshalers do not suffice for your application, you can provide a custom implementation of the
JmsProviderMarshaler
interface.
Implementing the marshaler 复制链接链接已复制到粘贴板!
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To create a custom provider marshaler, you implement the
org.apache.servicemix.jms.endpoints.JmsProviderMarshaler
interface. The JmsProviderMarshaler
interface, shown in Example 6.4, “The Provider Marshaler Interface”, has two methods you need to implement:
Example 6.4. The Provider Marshaler Interface
createMessage()
- The
createMessage()
method uses information from the Red Hat JBoss Fuse core to generate a JMS message. Its parameters include the message exchange, the normalized message that is received by the provider, and the active JMS session. populateMessage()
- The
populateMessage()
method takes a JMS message and adds it to a message exchange for use by the Red Hat JBoss Fuse core.
Example 6.5, “Provider Marshaler Implementation” shows a simple provider marshaler implementation.
Example 6.5. Provider Marshaler Implementation
Configuring the provider 复制链接链接已复制到粘贴板!
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You configure a provider to use a custom marshaler using its
marshaler
attribute. The marshaler
attribute's value is a reference to a bean
element specifying the class of your custom marshaler implementation.
Example 6.6, “Configuring a Provider to Use a Customer Marshaler” shows configuration for a provider that uses a custom marshaler.
Example 6.6. Configuring a Provider to Use a Customer Marshaler
Note
You can also configure a provider to use a custom marshaler by adding a child
marshaler
element to the provider's configuration. The marshaler
element simply wraps the bean
element that configures the marshaler.