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Apex Design Patterns

You're reading from   Apex Design Patterns Harness the power of Apex design patterns to build robust and scalable code architectures on the Force.com platform

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Product type Paperback
Published in Apr 2016
Publisher
ISBN-13 9781782173656
Length 256 pages
Edition 1st Edition
Languages
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Authors (2):
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Jitendra Zaa Jitendra Zaa
Author Profile Icon Jitendra Zaa
Jitendra Zaa
Anshul Verma Anshul Verma
Author Profile Icon Anshul Verma
Anshul Verma
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Toc

The interpreter pattern

With all the new age features being incorporated in the system of Universal Call Center, the team starts getting ambitious and wants to add more flexibility for the users. There are some support processes related to the media industry and they have a very peculiar problem. In the media industry, the copyright date is mostly displayed as roman numerals. This becomes very difficult for call center agents to comprehend copyright dates. As you can imagine, it can be a tedious job for any person to convert a roman number to a decimal number. So, the team decided to automate the process of converting roman numerals into decimal numbers programmatically for faster customer issue resolutions.

Here is an example of a roman numeral and its equivalent decimal values:

  • I = 1
  • V = 5
  • MCMXCVIII = 1998

Easier said than done! The team realized that the calculations and permutations involved are huge and can lead to a very complex code. Roman numerals are interpreted...

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