/**
* Creates a field criteria for the given node and operator.
*
* @param node The comparison node to extract selector and argument from.
* @param operator The (Morphia) operator to create criteria for.
* @return A field criteria for the given comparison.
* @throws RSQLValidationException If the node contains more or less than one argument, or a
* matching field for the selector cannot be found.
*/
protected Criteria createCriteria(ComparisonNode node, FilterOperator operator) {
MappedFieldPath mfp = resolveFieldPath(node.getSelector());
Object mappedValue =
convertToMappedValue(node.getArguments(), mfp, !node.getOperator().isMultiValue());
return new SimpleFieldCriteria(mfp.getFieldPath(), operator, mappedValue);
}
