io.kahu.hawaii.domain.validation.MandatoryPropertyValidator.java Source code

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Here is the source code for io.kahu.hawaii.domain.validation.MandatoryPropertyValidator.java

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/**
 * Copyright 2015 Q24
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.kahu.hawaii.domain.validation;

import io.kahu.hawaii.domain.ValidatableDomainObject;
import io.kahu.hawaii.domain.ValidatableDomainProperty;
import io.kahu.hawaii.domain.ValueHolder;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

import org.apache.commons.lang.StringUtils;

public class MandatoryPropertyValidator implements ConstraintValidator<Mandatory, ValueHolder> {
    private String key;

    @Override
    public void initialize(Mandatory constraintAnnotation) {
        this.key = constraintAnnotation.key();
    }

    @Override
    public boolean isValid(ValueHolder value, ConstraintValidatorContext context) {
        if (value == null) {
            return false;
        }
        if (value instanceof ValidatableDomainObject) {
            return true;
        }
        boolean isEmpty = value.isEmpty();
        if (isEmpty) {
            context.disableDefaultConstraintViolation();
            String message = "Mandatory property '%s' is empty.";
            context.buildConstraintViolationWithTemplate(message).addConstraintViolation();
        }
        if (StringUtils.isNotBlank(key) && !value.isEmpty()) {
            if (value instanceof ValidatableDomainProperty) {
                if (!((ValidatableDomainProperty) value).validate()) {
                    context.disableDefaultConstraintViolation();
                    context.buildConstraintViolationWithTemplate("INVALID").addConstraintViolation();
                    return false;
                }
            }
        }

        return !isEmpty;
    }
}