Problem: Arrays and contextual syntax.

[jeme]

When validating content in arrays, the framework should support some additional hooks:

• 1) For each item in the array, if the item matches rule A then it must fulfill rule B (contextual validation)
• 2) When A contains X elements (or another broad precondition) each element MUST...
• 3) Some Elements must...
  -At least one element must...

etc.

[jeme]

1. Can be done using child validators.