/*
 * Copyright 2002-2018 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
 *
 *      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 org.springframework.beans;

import java.io.PrintStream;
import java.io.PrintWriter;

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, Juergen Hoeller
Since:
18 April 2001/**
 * 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.
 *
 * <p>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. /** List of PropertyAccessException objects. */
	private final PropertyAccessException[] propertyAccessExceptions;


	
Create a new PropertyBatchUpdateException.
Params:
propertyAccessExceptions – the List of 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.
/**
	 * 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 null) if there were no errors. /**
	 * Return an array of the propertyAccessExceptions stored in this object.
	 * <p>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 null if there isn't any. /**
	 * 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() {
		StringBuilder sb = new StringBuilder("Failed properties: ");
		for (int i = 0; i < this.propertyAccessExceptions.length; i++) {
			sb.append(this.propertyAccessExceptions[i].getMessage());
			if (i < this.propertyAccessExceptions.length - 1) {
				sb.append("; ");
			}
		}
		return sb.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;
	}

}