Q. An adapter is a component that knows how to speak to a specific type of subsystem and translate messages on that subsystem into something that can be used in the Spring Integration bus only.

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Q. A service-activator, however, only helps you invoke your application’s business logic on receipt of a message.

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Q. The next component, a service-activator, listens for messages coming into that channel and invokes the bean referenced by the:-

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Q. Headers Found in Spring Integration Messages:-

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Q. Some header values are specific to the type of the source message payload.

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Q. Component-specific headers are the constants defined for files on:-

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Q. Annotation to get access to header metadata:-

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Q. The code for the service-activator has changed to reflect the fact that you’re expecting a message containing a message of type:-

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Q. To fork the process flow from one component to many, either all at once or to a single one based on a predicate condition.

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Q. A splitter takes an input message and asks you, the user of the component, on what basis it should split the Message.

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Q. Spring Integration ships with useful splitters that require no customization.

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Q. Return type of the method annotated by the @Splitter annotation is of type:-

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Q. Annotation which collects a series of messages (based on some correlation that you help Spring Integration make between the messages).

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Q. To determine how many messages to read until it can stop:-

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Q. For correlation when you might not have a size but know that you’re expecting messages that share a common header value within a known time, Spring Integration provides the HeaderAttributeCorrelationStrategy.

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Q. The only custom logic is a POJO with an @Aggregator annotation on a method expecting a collection of Message objects.

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Q. You want to conditionally move a message through different processes based on some criteria.

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Q. There are some convenient default routers available to fill common needs:-

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Q. To receive messages from an external system and process them using Spring Integration.

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Q. Adapters are opaque in nature.

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