javax.validation.EqualsValidator Maven / Gradle / Ivy

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package javax.validation;

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

import javax.validation.ConstraintValidatorContext.ConstraintViolationBuilder;
import javax.validation.constraints.Equals;

import org.springframework.util.ObjectUtils;
import org.springframework.util.ReflectionUtils;

public class EqualsValidator implements ConstraintValidator {
  private String sourceFieldName;
  private String targetFieldName;
  private List fieldNames;
  private String message;

  @Override
  public void initialize(Equals constraintAnnotation) {
    this.fieldNames = Arrays.asList(constraintAnnotation.value());
    this.sourceFieldName = constraintAnnotation.source();
    this.targetFieldName = constraintAnnotation.target();
    this.message = constraintAnnotation.message();
  }

  @Override
  public boolean isValid(Object value, ConstraintValidatorContext context) {
    boolean result = isValid(value);
    if (!result) {
      ConstraintViolationBuilder builder = context.buildConstraintViolationWithTemplate(this.message);
      for (String fieldName : this.fieldNames) {
        builder.addPropertyNode(fieldName).addConstraintViolation();
      }
    }
    return result;
  }

  private boolean isValid(Object value) {
    if (ObjectUtils.isEmpty(this.fieldNames)) {
      return true;
    }
//    List