TYPO3.Flow

Currently if you use the object route part handler, Flow adds an "ObjectPathMapping" record when the URL is created the first time.
This is done because the association might not be deterministic:

 1-
 2  name: 'Single product route'
 3  uriPattern: 'products/{product}'
 4  defaults:
 5    '@package':     'My.Demo'
 6    '@controller':  'Product'
 7    '@action':      'show'
 8  routeParts:
 9    product:
10      objectType: 'My\Demo\Domain\Model\Product'
11      uriPattern: '{product.name}'

In this case, if multiple products have the same name flow would create separate ObjectPathMappings with a unique suffix ("<product.name>-<n>" where n is a number starting with 1).

However this is not required if the mapping is deterministic, e.g. if the "uriPattern" is not specified. In that case Flow falls back to using the Identity properties and we don't need to persist ObjectPathMappings.