com.liferay.portlet.PortletSessionAttributeMap Maven / Gradle / Ivy

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/**
 * Copyright (c) 2000-present 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.portlet;

import com.liferay.portal.kernel.util.MappingEnumeration;
import com.liferay.portal.kernel.util.SetUtil;

import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.servlet.http.HttpSession;

/**
 * @author Minhchau Dang
 * @author Shuyang Zhou
 */
public class PortletSessionAttributeMap extends AbstractMap {

	public PortletSessionAttributeMap(HttpSession httpSession) {
		this(httpSession, null);
	}

	public PortletSessionAttributeMap(
		HttpSession httpSession, String scopePrefix) {

		this.httpSession = httpSession;
		this.scopePrefix = scopePrefix;
	}

	@Override
	public void clear() {
		throw new UnsupportedOperationException();
	}

	@Override
	public boolean containsKey(Object key) {
		if (key == null) {
			return false;
		}

		key = encodeKey(String.valueOf(key));

		Enumeration enumeration = getAttributeNames(false);

		while (enumeration.hasMoreElements()) {
			String attributeName = enumeration.nextElement();

			if (attributeName.equals(key)) {
				return true;
			}
		}

		return false;
	}

	@Override
	public boolean containsValue(Object value) {
		Enumeration enumeration = getAttributeNames(false);

		while (enumeration.hasMoreElements()) {
			Object attributeValue = httpSession.getAttribute(
				enumeration.nextElement());

			if (attributeValue.equals(value)) {
				return true;
			}
		}

		return false;
	}

	@Override
	public Set> entrySet() {
		Map map = new HashMap<>();

		Enumeration enumeration = getAttributeNames(true);

		while (enumeration.hasMoreElements()) {
			String attributeName = enumeration.nextElement();

			map.put(attributeName, get(attributeName));
		}

		return Collections.unmodifiableSet(map.entrySet());
	}

	@Override
	public Object get(Object key) {
		if (key == null) {
			return null;
		}

		return httpSession.getAttribute(encodeKey(String.valueOf(key)));
	}

	@Override
	public boolean isEmpty() {
		Enumeration enumeration = getAttributeNames(false);

		return !enumeration.hasMoreElements();
	}

	@Override
	public Set keySet() {
		return Collections.unmodifiableSet(
			SetUtil.fromEnumeration(getAttributeNames(true)));
	}

	@Override
	public Object put(String key, Object value) {
		throw new UnsupportedOperationException();
	}

	@Override
	public void putAll(Map map) {
		throw new UnsupportedOperationException();
	}

	@Override
	public Object remove(Object key) {
		throw new UnsupportedOperationException();
	}

	@Override
	public int size() {
		int size = 0;

		Enumeration enumeration = getAttributeNames(false);

		while (enumeration.hasMoreElements()) {
			enumeration.nextElement();

			size++;
		}

		return size;
	}

	@Override
	public Collection