net.prasenjit.auth.validation.FieldMatchValidator.java Source code

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Here is the source code for net.prasenjit.auth.validation.FieldMatchValidator.java

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/*
 * Copyright (c) 2016 Prasenjit Purohit
 *
 *    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 net.prasenjit.auth.validation;

import org.springframework.util.ReflectionUtils;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.lang.reflect.Field;

/**
 * Created by PRASENJIT-NET on 5/2/2016.
 *
 * @author PRASEN
 * @version $Id: $Id
 */
public class FieldMatchValidator implements ConstraintValidator<FieldMatch, Object> {
    private String firstFieldName;
    private String secondFieldName;

    /**
     * {@inheritDoc}
     */
    @Override
    public void initialize(final FieldMatch constraintAnnotation) {
        firstFieldName = constraintAnnotation.first();
        secondFieldName = constraintAnnotation.second();
    }

    /** {@inheritDoc} */
    @Override
    public boolean isValid(final Object value, final ConstraintValidatorContext context) {
        try {
            Field field = ReflectionUtils.findField(value.getClass(), firstFieldName);
            ReflectionUtils.makeAccessible(field);
            final Object firstObj = ReflectionUtils.getField(field, value);
            field = ReflectionUtils.findField(value.getClass(), secondFieldName);
            ReflectionUtils.makeAccessible(field);
            final Object secondObj = ReflectionUtils.getField(field, value);

            return firstObj == null && secondObj == null || firstObj != null && firstObj.equals(secondObj);
        } catch (final Exception ignore) {
            // ignore
        }
        return true;
    }
}