Business Rule: Filename Parser

Analysis

• a layer which can be assigned to the content (“Product information” layer)

• list of products and their code (“Products” list)

• “rule” to split the filename into product code and “other”

Prerequisites

Cache

Create a cache for Products. This cache will be used for looking up the correct tag to assign. 

1. Switch to Cache

   Open

   

    

2. Create List Item Named Cache

   1. Schema ID: Products

   2. Key fields: Code (the one we will match with the filename information)

   3. Name: ProductListCache

VIDEO: How To Switch To Caches

Regular Expression

Regular expression to split the file name into product code and other values.

• Regex: (?<productCode>^[0-9]{2} [0-9]{3} [^-]*)-(?<filename>.*)

  • Input: 01 747 7715 7754-Set_HighRes_4035.jpg

  • Output:

    • productCode: 01 747 7715 7754

    • filename: Set_HighRes_4035.jpg

Online tool to test & validate regular expressions: www.regexr.com

• Make sure PCRE is selected in the top right corner

• Switch between Details and Explain tab

Business Rule Setup

Trigger

The trigger point (check Triggers in Business Rule Settings):

• Should trigger on content upload -> Action Create

• We want to modify the Content Item document -> Execution scope Main doc

Condition

Goal: Rule should execute for images only and only if the filename matches our regex

• Two conditions -> start with an AND condition

• AND

  • Content schema condition -> Image (only do this for images)

  • Match Regex condition

    • Field path: imageMetadata.fileName

    • Regex: (?<productCode>^[0-9]{2} [0-9]{3} [^-]*)-(?<filename>.*)

    • Store in: parsedFilename

You can find additional information on the fieldpath and the trigger field specialties in the explanation of fields in Picturepark. 

Transformations

• Perform lookup of the first part of filename against Products list

• Create a new transformation group

  • Inputs: $parsedFilename$

  • Store In: product

  • Transformations

    • Take Dictionary Value (key: productCode)

    • Lookup Cache

Action

Goal: Assign Product information layer with required field Product

• Assign Layer Action

  • LayerId: Product information

  • Default values:

    { "product": { "_refId": "$product$" } }