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/*
 * Copyright 2002-2019 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.beans;

import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.StringJoiner;

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

/**
 * Combined exception, composed of individual PropertyAccessException instances.
 * An object of this class is created at the beginning of the binding
 * process, and errors added to it as necessary.
 *
 * 

The binding process continues when it encounters application-level * PropertyAccessExceptions, applying those changes that can be applied * and storing rejected changes in an object of this class. * * @author Rod Johnson * @author Juergen Hoeller * @since 18 April 2001 */ @SuppressWarnings("serial") public class PropertyBatchUpdateException extends BeansException { /** List of PropertyAccessException objects. */ private final PropertyAccessException[] propertyAccessExceptions; /** * Create a new PropertyBatchUpdateException. * @param propertyAccessExceptions the List of PropertyAccessExceptions */ public PropertyBatchUpdateException(PropertyAccessException[] propertyAccessExceptions) { super(null, null); Assert.notEmpty(propertyAccessExceptions, "At least 1 PropertyAccessException required"); this.propertyAccessExceptions = propertyAccessExceptions; } /** * If this returns 0, no errors were encountered during binding. */ public final int getExceptionCount() { return this.propertyAccessExceptions.length; } /** * Return an array of the propertyAccessExceptions stored in this object. *

Will return the empty array (not {@code null}) if there were no errors. */ public final PropertyAccessException[] getPropertyAccessExceptions() { return this.propertyAccessExceptions; } /** * Return the exception for this field, or {@code null} if there isn't any. */ @Nullable public PropertyAccessException getPropertyAccessException(String propertyName) { for (PropertyAccessException pae : this.propertyAccessExceptions) { if (ObjectUtils.nullSafeEquals(propertyName, pae.getPropertyName())) { return pae; } } return null; } @Override public String getMessage() { StringJoiner stringJoiner = new StringJoiner("; ", "Failed properties: ", ""); for (PropertyAccessException exception : this.propertyAccessExceptions) { stringJoiner.add(exception.getMessage()); } return stringJoiner.toString(); } @Override public String toString() { StringBuilder sb = new StringBuilder(); sb.append(getClass().getName()).append("; nested PropertyAccessExceptions ("); sb.append(getExceptionCount()).append(") are:"); for (int i = 0; i < this.propertyAccessExceptions.length; i++) { sb.append('\n').append("PropertyAccessException ").append(i + 1).append(": "); sb.append(this.propertyAccessExceptions[i]); } return sb.toString(); } @Override public void printStackTrace(PrintStream ps) { synchronized (ps) { ps.println(getClass().getName() + "; nested PropertyAccessException details (" + getExceptionCount() + ") are:"); for (int i = 0; i < this.propertyAccessExceptions.length; i++) { ps.println("PropertyAccessException " + (i + 1) + ":"); this.propertyAccessExceptions[i].printStackTrace(ps); } } } @Override public void printStackTrace(PrintWriter pw) { synchronized (pw) { pw.println(getClass().getName() + "; nested PropertyAccessException details (" + getExceptionCount() + ") are:"); for (int i = 0; i < this.propertyAccessExceptions.length; i++) { pw.println("PropertyAccessException " + (i + 1) + ":"); this.propertyAccessExceptions[i].printStackTrace(pw); } } } @Override public boolean contains(@Nullable Class exType) { if (exType == null) { return false; } if (exType.isInstance(this)) { return true; } for (PropertyAccessException pae : this.propertyAccessExceptions) { if (pae.contains(exType)) { return true; } } return false; } }





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