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com.liferay.portal.kernel.servlet.Header Maven / Gradle / Ivy
/**
* Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License for more
* details.
*/
package com.liferay.portal.kernel.servlet;
import com.liferay.portal.kernel.util.CookieUtil;
import com.liferay.portal.kernel.util.HashUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.Validator;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
/**
* @author Michael Young
* @author Shuyang Zhou
*/
public class Header implements Externalizable {
/**
* The empty constructor is required by {@link java.io.Externalizable}. Do
* not use this for any other purpose.
*/
public Header() {
}
public Header(Cookie cookie) {
if (cookie == null) {
throw new IllegalArgumentException("Cookie is null");
}
_type = Type.COOKIE;
_cookieValue = cookie;
}
public Header(int integer) {
_type = Type.INTEGER;
_intValue = integer;
}
public Header(long date) {
_type = Type.DATE;
_dateValue = date;
}
public Header(String string) {
if (string == null) {
throw new IllegalArgumentException("String is null");
}
_type = Type.STRING;
_stringValue = string;
}
public void addToResponse(String key, HttpServletResponse response) {
if (_type == Type.COOKIE) {
response.addCookie(_cookieValue);
}
else if (_type == Type.DATE) {
response.addDateHeader(key, _dateValue);
}
else if (_type == Type.INTEGER) {
response.addIntHeader(key, _intValue);
}
else if (_type == Type.STRING) {
response.addHeader(key, _stringValue);
}
else {
throw new IllegalStateException("Invalid type " + _type);
}
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof Header)) {
return false;
}
Header header = (Header)obj;
if (_type != header._type) {
return false;
}
if (_type == Type.COOKIE) {
return _equals(_cookieValue, header._cookieValue);
}
else if (_type == Type.DATE) {
return _dateValue == header._dateValue;
}
else if (_type == Type.INTEGER) {
return _intValue == header._intValue;
}
else if (_type == Type.STRING) {
return _stringValue.equals(header._stringValue);
}
else {
throw new IllegalStateException("Invalid type " + _type);
}
}
@Override
public int hashCode() {
if (_type == Type.COOKIE) {
return _hashCode(_cookieValue);
}
else if (_type == Type.DATE) {
return (int)(_dateValue ^ (_dateValue >>> 32));
}
else if (_type == Type.INTEGER) {
return _intValue;
}
else if (_type == Type.STRING) {
return _stringValue.hashCode();
}
else {
throw new IllegalStateException("Invalid type " + _type);
}
}
@Override
public void readExternal(ObjectInput objectInput) throws IOException {
if (objectInput.readBoolean()) {
int size = objectInput.readInt();
byte[] data = new byte[size];
objectInput.readFully(data);
_cookieValue = CookieUtil.deserialize(data);
}
_dateValue = objectInput.readLong();
_intValue = objectInput.readInt();
String stringValue = objectInput.readUTF();
if (!stringValue.isEmpty()) {
_stringValue = stringValue;
}
_type = Type.values()[objectInput.readInt()];
}
public void setToResponse(String key, HttpServletResponse response) {
if (_type == Type.COOKIE) {
response.addCookie(_cookieValue);
}
else if (_type == Type.DATE) {
response.setDateHeader(key, _dateValue);
}
else if (_type == Type.INTEGER) {
response.setIntHeader(key, _intValue);
}
else if (_type == Type.STRING) {
response.setHeader(key, _stringValue);
}
else {
throw new IllegalStateException("Invalid type " + _type);
}
}
@Override
public String toString() {
if (_type == Type.COOKIE) {
return CookieUtil.toString(_cookieValue);
}
else if (_type == Type.DATE) {
return String.valueOf(_dateValue);
}
else if (_type == Type.INTEGER) {
return String.valueOf(_intValue);
}
else if (_type == Type.STRING) {
return _stringValue;
}
else {
throw new IllegalStateException("Invalid type " + _type);
}
}
@Override
public void writeExternal(ObjectOutput objectOutput) throws IOException {
if (_cookieValue == null) {
objectOutput.writeBoolean(false);
}
else {
objectOutput.writeBoolean(true);
byte[] data = CookieUtil.serialize(_cookieValue);
objectOutput.writeInt(data.length);
objectOutput.write(data);
}
objectOutput.writeLong(_dateValue);
objectOutput.writeInt(_intValue);
if (_stringValue == null) {
objectOutput.writeUTF(StringPool.BLANK);
}
else {
objectOutput.writeUTF(_stringValue);
}
objectOutput.writeInt(_type.ordinal());
}
private boolean _equals(Cookie cookie1, Cookie cookie2) {
if (cookie1 == cookie2) {
return true;
}
if (!Validator.equals(cookie1.getComment(), cookie2.getComment()) ||
!Validator.equals(cookie1.getDomain(), cookie2.getDomain()) ||
(cookie1.getMaxAge() != cookie2.getMaxAge()) ||
!Validator.equals(cookie1.getName(), cookie2.getName()) ||
!Validator.equals(cookie1.getPath(), cookie2.getPath()) ||
(cookie1.getSecure() != cookie2.getSecure()) ||
!Validator.equals(cookie1.getValue(), cookie2.getValue()) ||
(cookie1.getVersion() != cookie2.getVersion())) {
return false;
}
return true;
}
private int _hashCode(Cookie cookie) {
int hashCode = HashUtil.hash(0, cookie.getComment());
hashCode = HashUtil.hash(hashCode, cookie.getDomain());
hashCode = HashUtil.hash(hashCode, cookie.getMaxAge());
hashCode = HashUtil.hash(hashCode, cookie.getName());
hashCode = HashUtil.hash(hashCode, cookie.getPath());
hashCode = HashUtil.hash(hashCode, cookie.getSecure());
hashCode = HashUtil.hash(hashCode, cookie.getValue());
hashCode = HashUtil.hash(hashCode, cookie.getVersion());
return hashCode;
}
private Cookie _cookieValue;
private long _dateValue;
private int _intValue;
private String _stringValue;
private Type _type;
private static enum Type {
COOKIE, DATE, INTEGER, STRING
}
}