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| Section | Objectives |
|---|---|
| Topic 1: Designing APIs | - API design best practices - RAML basics |
| Topic 2: Anypoint Platform Fundamentals | - API-led connectivity concepts - Anypoint Platform components |
| Topic 3: DataWeave | - Data transformation basics - Mapping and functions |
| Topic 4: Implementing Mule Applications | - Connectors and components - Mule flows and event processing |
| Topic 5: Error Handling and Debugging | - Debugging Mule applications - Error types and strategies |
| Topic 6: Deployment and Operations | - Monitoring and logging - CloudHub deployment |
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質問 # 71
A Utility.dwl file is located in a Mule project at src/main/resources/modules. The Utility.dwl hie defines a function named pascalize that reformats strings to pascal case.
What is the correct DataWeave to call the pascalize function in a Transform Message component?
正解：D
質問 # 72
Refer to the exhibits. What payload is logged at the end of the main flow?
正解：A
解説：
For Each Scope
The For Each scope splits a payload into elements and processes them one by one through the components that you place in the scope. It is similar to a for-each/for loop code block in most programming languages and can process any collection, including lists and arrays. The collection can be any supported content type, such as application/json, application/java, or application/xml.
General considerations about the For Each scope:
By default, For Each tries to split the payload. If the payload is a simple Java collection, the For Each scope can split it without any configuration. The payload inside the For Each scope is each of the split elements.
Attributes within the original message are ignored because they are related to the entire message.
For Each does not modify the current payload. The output payload is the same as the input.
Mule Doc Reference : https://docs.mulesoft.com/mule-runtime/4.3/for-each-scope-concept
質問 # 73
Refer to the exhibits.
The Validation component in the Try scope throws an error.
What response message is returned to a client request to the main flow's HTTP Listener?
The Validation component in the Try scope throws an error. What response message is returned to a client request to the main flow's HTTP Listener?
正解：C
解説：
Note that private flow has error scope defined as On Error Continue . So when error occurs in private flow , it is handled by this On Error Continue scope which sends success response back to main flow and does not throw back an error. So main continues normally and payload is set to Success - main flow.
Hence correct answer is Success - main flow
1) HTTP listener received request
2) The Flow Reference calls the child flow
3) The Is Number validator creates an Error Object because the payload isn't an integer. Child Flow execution stops
#[error.description] = "payload is not a valid INTEGER value"
#[error.errorType] = VALIDATION:INVALID_NUMBER
4) The On Error Continue handles the errorThe payload is set to "Error - Sub Flow"
5) "Error - Sub Flow" is returned to the main flow as if the child flow was a success. The Set Payload is executed. The payload is reset to "Success - Finished Main Flow"
6) "Success - Main Flow" is returned to the requestor in the body of the HTTP request. HTTP Status Code: 200 As you can see, in the above example, because the error was caught by an On Error Continue scope in the child flow (RED in, GREEN out) when the Mule Message returns to the parent flow, the parent flow knows none-the-different that there was a failure because the on error continue returns a 200 success message. Note that because, to the mainFlow, the childFlow appeared to succeed, the processing of mainFlow resumed after the flow reference.
質問 # 74
Refer to the exhibits.
The main flow contains an HTTP Request. The HTTP Listeners and HTTP Request use default configurations.
What
values are accessible in the child flow after a web client submits a request to http://localhost:8081/order? col or
= red?
正解：C
質問 # 75
Refer to the exhibits.
The input array of strings is processed by the batch job that processes, filters, and aggregates the values. What is the last message logged by the Logger component after the batch job completes processing?
正解：A
解説：
Logs would look like:
INFO 2021-06-09 19:14:56,039 [[MuleRuntime].uber.06:
[validationtest].batch-job-validationtestBatch_Job-work-manager @6de10f3e] [processor:
validationtestFlow/processors/1/route/0/route/0/aggregator/processors/0; event:
bfb751e1-9939-11eb-9f69-02053763653a]
org.mule.runtime.core.internal.processor.LoggerMessageProcessor:
[
"\"A\"",
"\"C\"",
"\"D\""
]
--
INFO 2021-06-09 19:15:02,486 [[MuleRuntime].uber.06:
[validationtest].batch-job-validationtestBatch_Job-work-manager @6de10f3e] [processor:
validationtestFlow/processors/1/route/0/route/0/aggregator/processors/0; event:
bfb751e1-9939-11eb-9f69-02053763653a]
org.mule.runtime.core.internal.processor.LoggerMessageProcessor: [
"\"E\""
]
Batch aggregator value is 3. Hence in first time it will print ["A", "C", "D"] and in next iteration it will print [ "E" ]
---------------------------------------------------------------------------------------------------------------------------------------- Correct answer is [ "E" ]
質問 # 76
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