Extracting and Storing Values from a Long Message

Article Overview:

This article will cover how you can achieve the following:

In many applications, it’s common to need specific values from lengthy messages, such as transaction numbers. This article provides a step-by-step guide to extracting a transaction number from a message, using a structured approach.

Problem Statement:

To extract the transaction number from a message containing the phrase "transaction number" followed by the actual number.

Solution:

Step 1: Extract the Transaction Number

1. Identify the Pattern: Look for the phrase "transaction number" followed by the transaction number itself.

2. Use a Regular Expression: This regex pattern can be employed to find and capture the transaction number:

   • Pattern: transaction number\s*(\S+)
   • This captures the sequence of non-whitespace characters (\S+) immediately following the phrase "transaction number".
     
     

3. Example Message:

   • Input: "Your transaction number 12345 has been processed."
     
     

4. Store the Result: The result of this extraction will be stored in a variable called transactionNo:

   • Result: Store value ${$SuccessMessage.match(/transaction number\s*(\S+)/)} in $transactionNo

Step 2: Conditional Assignment

1. Check for a Match: After the extraction, check if the transaction number was successfully matched.

   • If a match is found, the transaction number can be accessed.
   • If no match is found, the result should be null.
     
     

2. Assign the Value: Use a conditional expression to store the extracted transaction number:

   • Assignment:
     Store value ${$transactionNo ? $transactionNo[1] : null} in $transactionNo
   • If a match exists, assign transactionNo[1] (the captured number) to transactionNo.
   • If not, assign null to transactionNo.

Example Workflow:

1. Original Message:

   • "Your transaction number 12345 has been processed."

2. Extract the Number:

   • Using the regex, the match results in an array, where:
     • transactionNo[0] contains the entire matched string.
     • transactionNo[1] contains the extracted transaction number.

3. Store the Value:

   • After applying the conditional logic, you would end up with:
     • If the match is successful, transactionNo now holds 12345.
     • If no match is found, transactionNo is set to null.

Final Output

• After executing the above steps, you can log or use the transactionNo:
  • Output: 12345

By following these steps, you can effectively extract and store specific values from lengthy messages. This method can be adapted to various contexts where similar data extraction is needed, enhancing data handling and processing capabilities.