Example usage for org.springframework.validation DataBinder setAllowedFields

Introduction

In this page you can find the example usage for org.springframework.validation DataBinder setAllowedFields.

Prototype

public void setAllowedFields(@Nullable String... allowedFields) 

Source Link

Document

Register fields that should be allowed for binding.

Usage

From source file:utils.play.BugWorkaroundForm.java

@SuppressWarnings({ "unchecked", "rawtypes" })
@Override/*from w  w  w  . ja v  a  2s .co m*/
public Form<T> bind(final Map<String, String> data, final String... allowedFields) {
    DataBinder dataBinder = null;
    Map<String, String> objectData = data;
    if (rootName == null) {
        dataBinder = new DataBinder(blankInstance());
    } else {
        dataBinder = new DataBinder(blankInstance(), rootName);
        objectData = new HashMap<String, String>();
        for (String key : data.keySet()) {
            if (key.startsWith(rootName + ".")) {
                objectData.put(key.substring(rootName.length() + 1), data.get(key));
            }
        }
    }
    if (allowedFields.length > 0) {
        dataBinder.setAllowedFields(allowedFields);
    }
    SpringValidatorAdapter validator = new SpringValidatorAdapter(Validation.getValidator());
    dataBinder.setValidator(validator);
    dataBinder.setConversionService(play.data.format.Formatters.conversion);
    dataBinder.setAutoGrowNestedPaths(true);
    dataBinder.bind(new MutablePropertyValues(objectData));

    Set<ConstraintViolation<Object>> validationErrors = validator.validate(dataBinder.getTarget());
    BindingResult result = dataBinder.getBindingResult();

    for (ConstraintViolation<Object> violation : validationErrors) {
        String field = violation.getPropertyPath().toString();
        FieldError fieldError = result.getFieldError(field);
        if (fieldError == null || !fieldError.isBindingFailure()) {
            try {
                result.rejectValue(field,
                        violation.getConstraintDescriptor().getAnnotation().annotationType().getSimpleName(),
                        getArgumentsForConstraint(result.getObjectName(), field,
                                violation.getConstraintDescriptor()),
                        violation.getMessage());
            } catch (NotReadablePropertyException ex) {
                throw new IllegalStateException("JSR-303 validated property '" + field
                        + "' does not have a corresponding accessor for data binding - "
                        + "check your DataBinder's configuration (bean property versus direct field access)",
                        ex);
            }
        }
    }

    if (result.hasErrors()) {
        Map<String, List<ValidationError>> errors = new HashMap<String, List<ValidationError>>();
        for (FieldError error : result.getFieldErrors()) {
            String key = error.getObjectName() + "." + error.getField();
            System.out.println("Error field:" + key);
            if (key.startsWith("target.") && rootName == null) {
                key = key.substring(7);
            }
            List<Object> arguments = new ArrayList<>();
            for (Object arg : error.getArguments()) {
                if (!(arg instanceof org.springframework.context.support.DefaultMessageSourceResolvable)) {
                    arguments.add(arg);
                }
            }
            if (!errors.containsKey(key)) {
                errors.put(key, new ArrayList<ValidationError>());
            }
            errors.get(key).add(new ValidationError(key,
                    error.isBindingFailure() ? "error.invalid" : error.getDefaultMessage(), arguments));
        }
        return new Form(rootName, backedType, data, errors, F.Option.None());
    } else {
        Object globalError = null;
        if (result.getTarget() != null) {
            try {
                java.lang.reflect.Method v = result.getTarget().getClass().getMethod("validate");
                globalError = v.invoke(result.getTarget());
            } catch (NoSuchMethodException e) {
            } catch (Throwable e) {
                throw new RuntimeException(e);
            }
        }
        if (globalError != null) {
            Map<String, List<ValidationError>> errors = new HashMap<String, List<ValidationError>>();
            if (globalError instanceof String) {
                errors.put("", new ArrayList<ValidationError>());
                errors.get("").add(new ValidationError("", (String) globalError, new ArrayList()));
            } else if (globalError instanceof List) {
                for (ValidationError error : (List<ValidationError>) globalError) {
                    List<ValidationError> errorsForKey = errors.get(error.key());
                    if (errorsForKey == null) {
                        errors.put(error.key(), errorsForKey = new ArrayList<ValidationError>());
                    }
                    errorsForKey.add(error);
                }
            } else if (globalError instanceof Map) {
                errors = (Map<String, List<ValidationError>>) globalError;
            }

            if (result.getTarget() != null) {
                return new Form(rootName, backedType, data, errors, F.Option.Some((T) result.getTarget()));
            } else {
                return new Form(rootName, backedType, data, errors, F.Option.None());
            }
        }
        return new Form(rootName, backedType, new HashMap<String, String>(data),
                new HashMap<String, List<ValidationError>>(errors), F.Option.Some((T) result.getTarget()));
    }
}

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