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/*
 * Copyright 2002-2023 the original author or authors.
 *
 * 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
 *
 *      https://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 org.springframework.validation;

import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;

/**
 * Encapsulates a field error, that is, a reason for rejecting a specific
 * field value.
 *
 * 

See the {@link DefaultMessageCodesResolver} javadoc for details on * how a message code list is built for a {@code FieldError}. * * @author Rod Johnson * @author Juergen Hoeller * @since 10.03.2003 * @see DefaultMessageCodesResolver */ @SuppressWarnings("serial") public class FieldError extends ObjectError { private final String field; @Nullable private final Object rejectedValue; private final boolean bindingFailure; /** * Create a new FieldError instance. * @param objectName the name of the affected object * @param field the affected field of the object * @param defaultMessage the default message to be used to resolve this message */ public FieldError(String objectName, String field, String defaultMessage) { this(objectName, field, null, false, null, null, defaultMessage); } /** * Create a new FieldError instance. * @param objectName the name of the affected object * @param field the affected field of the object * @param rejectedValue the rejected field value * @param bindingFailure whether this error represents a binding failure * (like a type mismatch); else, it is a validation failure * @param codes the codes to be used to resolve this message * @param arguments the array of arguments to be used to resolve this message * @param defaultMessage the default message to be used to resolve this message */ public FieldError(String objectName, String field, @Nullable Object rejectedValue, boolean bindingFailure, @Nullable String[] codes, @Nullable Object[] arguments, @Nullable String defaultMessage) { super(objectName, codes, arguments, defaultMessage); Assert.notNull(field, "Field must not be null"); this.field = field; this.rejectedValue = rejectedValue; this.bindingFailure = bindingFailure; } /** * Return the affected field of the object. */ public String getField() { return this.field; } /** * Return the rejected field value. */ @Nullable public Object getRejectedValue() { return this.rejectedValue; } /** * Return whether this error represents a binding failure * (like a type mismatch); otherwise it is a validation failure. */ public boolean isBindingFailure() { return this.bindingFailure; } @Override public boolean equals(@Nullable Object other) { if (this == other) { return true; } if (!super.equals(other)) { return false; } FieldError otherError = (FieldError) other; return (getField().equals(otherError.getField()) && ObjectUtils.nullSafeEquals(getRejectedValue(), otherError.getRejectedValue()) && isBindingFailure() == otherError.isBindingFailure()); } @Override public int hashCode() { int hashCode = super.hashCode(); hashCode = 29 * hashCode + getField().hashCode(); hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(getRejectedValue()); hashCode = 29 * hashCode + (isBindingFailure() ? 1 : 0); return hashCode; } @Override public String toString() { // We would preferably use ObjectUtils.nullSafeConciseToString(rejectedValue) here but // keep including the full nullSafeToString representation for backwards compatibility. return "Field error in object '" + getObjectName() + "' on field '" + this.field + "': rejected value [" + ObjectUtils.nullSafeToString(this.rejectedValue) + "]; " + resolvableToString(); } }





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