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	/*
	* Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/
	package com.sun.beans;

	import java.lang.reflect.Type;
	import java.lang.reflect.WildcardType;
	import java.util.Arrays;

	/**
	* This class implements {@link WildcardType WildcardType} compatibly with the JDK's
	* {@link sun.reflect.generics.reflectiveObjects.WildcardTypeImpl WildcardTypeImpl}.
	* Unfortunately we can't use the JDK's
	* {@link sun.reflect.generics.reflectiveObjects.WildcardTypeImpl WildcardTypeImpl} here as we do for
	* {@link sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl ParameterizedTypeImpl} and
	* {@link sun.reflect.generics.reflectiveObjects.GenericArrayTypeImpl GenericArrayTypeImpl},
	* because {@link sun.reflect.generics.reflectiveObjects.WildcardTypeImpl WildcardTypeImpl}'s
	* constructor takes parameters representing intermediate structures obtained during class-file parsing.
	* We could reconstruct versions of those structures but it would be more trouble than it's worth.
	*
	* @since 1.7
	*
	* @author Eamonn McManus
	* @author Sergey Malenkov
	*/
	final class WildcardTypeImpl implements WildcardType {
	private final Type[] upperBounds;
	private final Type[] lowerBounds;

	/**
	* Creates a wildcard type with the requested bounds.
	* Note that the array arguments are not cloned
	* because instances of this class are never constructed
	* from outside the containing package.
	*
	* @param upperBounds the array of types representing
	* the upper bound(s) of this type variable
	* @param lowerBounds the array of types representing
	* the lower bound(s) of this type variable
	*/
	WildcardTypeImpl(Type[] upperBounds, Type[] lowerBounds) {
	this.upperBounds = upperBounds;
	this.lowerBounds = lowerBounds;
	}

	/**
	* Returns an array of {@link Type Type} objects
	* representing the upper bound(s) of this type variable.
	* Note that if no upper bound is explicitly declared,
	* the upper bound is {@link Object Object}.
	*
	* @return an array of types representing
	* the upper bound(s) of this type variable
	*/
	public Type[] getUpperBounds() {
	return this.upperBounds.clone();
	}

	/**
	* Returns an array of {@link Type Type} objects
	* representing the lower bound(s) of this type variable.
	* Note that if no lower bound is explicitly declared,
	* the lower bound is the type of {@code null}.
	* In this case, a zero length array is returned.
	*
	* @return an array of types representing
	* the lower bound(s) of this type variable
	*/
	public Type[] getLowerBounds() {
	return this.lowerBounds.clone();
	}

	/**
	* Indicates whether some other object is "equal to" this one.
	* It is implemented compatibly with the JDK's
	* {@link sun.reflect.generics.reflectiveObjects.WildcardTypeImpl WildcardTypeImpl}.
	*
	* @param object the reference object with which to compare
	* @return {@code true} if this object is the same as the object argument;
	* {@code false} otherwise
	* @see sun.reflect.generics.reflectiveObjects.WildcardTypeImpl#equals
	*/
	@Override
	public boolean equals(Object object) {
	if (object instanceof WildcardType) {
	WildcardType type = (WildcardType) object;
	return Arrays.equals(this.upperBounds, type.getUpperBounds())
	&& Arrays.equals(this.lowerBounds, type.getLowerBounds());
	}
	return false;
	}

	/**
	* Returns a hash code value for the object.
	* It is implemented compatibly with the JDK's
	* {@link sun.reflect.generics.reflectiveObjects.WildcardTypeImpl WildcardTypeImpl}.
	*
	* @return a hash code value for this object
	* @see sun.reflect.generics.reflectiveObjects.WildcardTypeImpl#hashCode
	*/
	@Override
	public int hashCode() {
	return Arrays.hashCode(this.upperBounds)
	^ Arrays.hashCode(this.lowerBounds);
	}

	/**
	* Returns a string representation of the object.
	* It is implemented compatibly with the JDK's
	* {@link sun.reflect.generics.reflectiveObjects.WildcardTypeImpl WildcardTypeImpl}.
	*
	* @return a string representation of the object
	* @see sun.reflect.generics.reflectiveObjects.WildcardTypeImpl#toString
	*/
	@Override
	public String toString() {
	StringBuilder sb;
	Type[] bounds;
	if (this.lowerBounds.length == 0) {
	if (this.upperBounds.length == 0 \|\| Object.class == this.upperBounds[0]) {
	return "?";
	}
	bounds = this.upperBounds;
	sb = new StringBuilder("? extends ");
	}
	else {
	bounds = this.lowerBounds;
	sb = new StringBuilder("? super ");
	}
	for (int i = 0; i < bounds.length; i++) {
	if (i > 0) {
	sb.append(" & ");
	}
	sb.append((bounds[i] instanceof Class)
	? ((Class) bounds[i]).getName()
	: bounds[i].toString());
	}
	return sb.toString();
	}
	}

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