Examples with Validator ninja.validation.Validator used on opensource projects

Example 1 with Validator

use of ninja.validation.Validator in project ninja by ninjaframework.

the class ControllerMethodInvoker method validateArgumentWithExtractor.

private static ArgumentExtractor<?> validateArgumentWithExtractor(MethodParameter methodParameter, Annotation[] annotations, Injector injector, ArgumentExtractor<?> extractor) {
    // We have validators that get applied before parsing, and validators
    // that get applied after parsing.
    List<Validator<?>> preParseValidators = new ArrayList<>();
    List<Validator<?>> postParseValidators = new ArrayList<>();
    Class<?> boxedParamType = methodParameter.parameterClass;
    if (methodParameter.parameterClass.isPrimitive()) {
        boxedParamType = box(methodParameter.parameterClass);
    }
    // Now we have an extractor, lets apply validators that are able to validate
    for (Annotation annotation : annotations) {
        WithValidator withValidator = annotation.annotationType().getAnnotation(WithValidator.class);
        if (withValidator != null) {
            Validator<?> validator = instantiateComponent(withValidator.value(), annotation, methodParameter.parameterClass, injector);
            // If the validator can validate the extractors type, then it's a pre parse validator
            if (validator.getValidatedType().isAssignableFrom(extractor.getExtractedType())) {
                preParseValidators.add(validator);
            // If it can validate the parameter type, it's a post parse validator
            } else if (validator.getValidatedType().isAssignableFrom(boxedParamType)) {
                postParseValidators.add(validator);
            // Otherwise, we can't validate with this validator
            } else {
                throw new RoutingException("Validator for field " + extractor.getFieldName() + " validates type " + validator.getValidatedType() + ", which doesn't match extracted type " + extractor.getExtractedType() + " or parameter type " + methodParameter.parameterClass);
            }
        }
    }
    // If we have pre parse validators, wrap our extractor in them
    if (!preParseValidators.isEmpty()) {
        extractor = new ValidatingArgumentExtractor(extractor, preParseValidators);
    }
    // String, and we can lookup a parser to parse it into the param type
    if (!boxedParamType.isAssignableFrom(extractor.getExtractedType())) {
        if (extractor.getFieldName() != null) {
            if (String.class.isAssignableFrom(extractor.getExtractedType())) {
                // Look up a parser for a single-valued parameter
                ParamParser<?> parser = injector.getInstance(ParamParsers.class).getParamParser(methodParameter.parameterClass);
                if (parser == null) {
                    throw new RoutingException("Can't find parameter parser for type " + extractor.getExtractedType() + " on field " + extractor.getFieldName());
                } else {
                    extractor = new ParsingArgumentExtractor(extractor, parser);
                }
            } else if (String[].class.isAssignableFrom(extractor.getExtractedType())) {
                // Look up a parser for a multi-valued parameter
                ArrayParamParser<?> parser = injector.getInstance(ParamParsers.class).getArrayParser(methodParameter.parameterClass);
                if (parser == null) {
                    throw new RoutingException("Can't find parameter array parser for type " + extractor.getExtractedType() + " on field " + extractor.getFieldName());
                } else {
                    extractor = new ParsingArrayExtractor(extractor, parser);
                }
            } else {
                throw new RoutingException("Extracted type " + extractor.getExtractedType() + " for field " + extractor.getFieldName() + " doesn't match parameter type " + methodParameter.parameterClass);
            }
        }
    }
    // If we have any post parse validators, wrap our extractor in them
    if (!postParseValidators.isEmpty()) {
        extractor = new ValidatingArgumentExtractor(extractor, postParseValidators);
    }
    if (methodParameter.isOptional) {
        extractor = new OptionalArgumentExtractor(extractor);
    }
    return extractor;
}