fromJson

Parses a JSON object matching the exact shape of PageSpec into a new instance. Unknown top-level keys are silently skipped (forward- compatible). Unknown sort values (outside SortDir) are silently dropped. Malformed input (wrong types, truncated escapes, integer overflow, invalid characters) throws IllegalArgumentException.

Shape:

{
  "page": 0,
  "pageSize": 15,
  "filters": { "alias": "value", … },
  "sorts": { "alias": "ASC"|"DESC", … },
  "caseSensitive": { "alias": true|false, … }
}