/**
* 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);
}
/**
* Converts the argument(s) to the target type (specified by {@code MappedFieldPath}) and then to
* a Mongo object.
*
* @param arguments Single or multiple arguments in a list.
* @param mfp The mapped field path.
* @param singleValue Whether a single argument is expected.
* @return An argument(s) converted to Mongo value.
* @throws cz.jirutka.rsql.mongodb.morphia.RSQLArgumentFormatException
*/
protected Object convertToMappedValue(
List<String> arguments, MappedFieldPath mfp, boolean singleValue) {
Object value =
singleValue
? converter.convert(arguments.get(0), mfp.getTargetValueType())
: converter.convert(arguments, mfp.getTargetValueType());
return mapper.toMongoObject(mfp.getMappedField(), null, value);
}
