Pattern-based matching for policy engines

A system comprising:

• a memory device;
• a processing device, operatively coupled to the memory device, to perform operations comprising:
• receiving an untyped data structure, wherein the untyped data structure comprises a plurality of data items, each data item comprising a field identifier and corresponding data;
• identifying, based on one or more field identifiers of the untyped data structure, a policy to evaluate the untyped data structure, wherein the policy specifies a field identifier and a corresponding type definition;
• comparing the type definition of the field identifier specified in the identified policy with data associated with a field identifier of the untyped data structure matching the field identifier of the identified policy;
• and
• determining, based on the comparisons, whether the untyped data structure satisfies the identified policy.