com.epam.ta.reportportal.ws.validation.JaskonRequiredPropertiesValidator.java Source code

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Here is the source code for com.epam.ta.reportportal.ws.validation.JaskonRequiredPropertiesValidator.java

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/*
 * Copyright 2016 EPAM Systems
 * 
 * 
 * This file is part of EPAM Report Portal.
 * https://github.com/reportportal/service-api
 * 
 * Report Portal is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Report Portal is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Report Portal.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.epam.ta.reportportal.ws.validation;

import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import com.epam.ta.reportportal.commons.accessible.Accessible;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;

public class JaskonRequiredPropertiesValidator implements Validator {
    private static final Logger LOGGER = LoggerFactory.getLogger(JaskonRequiredPropertiesValidator.class);

    @Override
    public boolean supports(Class<?> clazz) {
        return AnnotationUtils.isAnnotationDeclaredLocally(JsonInclude.class, clazz);
    }

    @Override
    public void validate(Object object, Errors errors) {
        for (Field field : collectFields(object.getClass())) {
            if (AnnotationUtils.isAnnotationDeclaredLocally(JsonInclude.class, field.getType())) {
                try {
                    Object innerObject = Accessible.on(object).field(field).getValue();
                    if (null != innerObject) {
                        errors.pushNestedPath(field.getName());
                        validate(innerObject, errors);
                    }
                } catch (Exception e) {
                    LOGGER.error("JaskonRequiredPropertiesValidator error: " + e.getMessage(), e);
                    // do nothing
                }

            }
            if (field.isAnnotationPresent(JsonProperty.class)
                    && field.getAnnotation(JsonProperty.class).required()) {
                String errorCode = new StringBuilder("NotNull.").append(field.getName()).toString();
                ValidationUtils.rejectIfEmpty(errors, field.getName(), errorCode, new Object[] { errorCode });
            }
        }
        if (errors.getNestedPath() != null && errors.getNestedPath().length() != 0) {
            errors.popNestedPath();
        }
    }

    private List<Field> collectFields(Class<?> clazz) {
        List<Field> fields = null;
        if (!Object.class.equals(clazz.getSuperclass())) {
            fields = collectFields(clazz.getSuperclass());
        }

        fields = (fields == null) ? new ArrayList<>() : fields;
        fields.addAll(Arrays.asList(clazz.getDeclaredFields()));
        return fields;
    }
}