com.liferay.portlet.RenderParametersPool 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.servlet.PortalSessionContext;
import com.liferay.portal.kernel.util.WebKeys;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

/**
 * @author Brian Wing Shun Chan
 */
public class RenderParametersPool {

	public static Map> clear(
		HttpServletRequest httpServletRequest, long plid) {

		if (plid <= 0) {
			return null;
		}

		Map>> pool =
			_getRenderParametersPool(httpServletRequest, false);

		if (pool == null) {
			return null;
		}

		return pool.remove(plid);
	}

	public static Map clear(
		HttpServletRequest httpServletRequest, long plid, String portletId) {

		Map> plidPool = get(
			httpServletRequest, plid);

		if (plidPool == null) {
			return null;
		}

		return plidPool.remove(portletId);
	}

	public static Map> get(
		HttpServletRequest httpServletRequest, long plid) {

		if (plid <= 0) {
			return null;
		}

		Map>> pool =
			_getRenderParametersPool(httpServletRequest, false);

		if (pool == null) {
			return null;
		}

		return pool.get(plid);
	}

	public static Map get(
		HttpServletRequest httpServletRequest, long plid, String portletId) {

		Map> plidPool = get(
			httpServletRequest, plid);

		if (plidPool == null) {
			return null;
		}

		return plidPool.get(portletId);
	}

	public static Map> getOrCreate(
		HttpServletRequest httpServletRequest, long plid) {

		if (plid <= 0) {
			return new ConcurrentHashMap<>();
		}

		Map>> pool =
			_getRenderParametersPool(httpServletRequest, true);

		return pool.computeIfAbsent(plid, key -> new ConcurrentHashMap<>());
	}

	public static Map getOrCreate(
		HttpServletRequest httpServletRequest, long plid, String portletId) {

		Map> plidPool = getOrCreate(
			httpServletRequest, plid);

		return plidPool.computeIfAbsent(portletId, key -> new HashMap<>());
	}

	public static void put(
		HttpServletRequest httpServletRequest, long plid, String portletId,
		Map params) {

		if (params.isEmpty()) {
			return;
		}

		Map> plidPool = getOrCreate(
			httpServletRequest, plid);

		plidPool.put(portletId, params);
	}

	private static Map>>
		_getRenderParametersPool(
			HttpServletRequest httpServletRequest, boolean createIfAbsent) {

		HttpSession httpSession = httpServletRequest.getSession();

		HttpSession portalHttpSession = PortalSessionContext.get(
			httpSession.getId());

		if (portalHttpSession != null) {
			httpSession = portalHttpSession;
		}

		Map>> renderParametersPool =
			(Map>>)
				httpSession.getAttribute(WebKeys.PORTLET_RENDER_PARAMETERS);

		if (createIfAbsent && (renderParametersPool == null)) {
			renderParametersPool = new ConcurrentHashMap<>();

			httpSession.setAttribute(
				WebKeys.PORTLET_RENDER_PARAMETERS, renderParametersPool);
		}

		return renderParametersPool;
	}

}