com.liferay.portal.kernel.servlet.taglib.TagDynamicIncludeUtil Maven / Gradle / Ivy
/**
* 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.portal.kernel.servlet.taglib;
import com.liferay.petra.string.CharPool;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.util.ListUtil;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.registry.Registry;
import com.liferay.registry.RegistryUtil;
import com.liferay.registry.ServiceReference;
import com.liferay.registry.collections.ServiceReferenceMapper;
import com.liferay.registry.collections.ServiceTrackerCollections;
import com.liferay.registry.collections.ServiceTrackerMap;
import java.util.Iterator;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author Carlos Sierra Andrés
* @author Raymond Augé
*/
public class TagDynamicIncludeUtil {
public static List getTagDynamicIncludes(
String tagClassName, String tagDynamicId, String tagPoint) {
String key = _getKey(tagClassName, tagDynamicId, tagPoint);
return _instance._tagDynamicIncludes.getService(key);
}
public static boolean hasTagDynamicInclude(
String tagClassName, String tagDynamicId, String tagPoint) {
List tagDynamicIncludes = getTagDynamicIncludes(
tagClassName, tagDynamicId, tagPoint);
if ((tagDynamicIncludes == null) || tagDynamicIncludes.isEmpty()) {
return false;
}
return true;
}
public static void include(
HttpServletRequest request, HttpServletResponse response,
String tagClassName, String tagDynamicId, String tagPoint,
boolean ascendingPriority) {
List tagDynamicIncludes = getTagDynamicIncludes(
tagClassName, tagDynamicId, tagPoint);
if ((tagDynamicIncludes == null) || tagDynamicIncludes.isEmpty()) {
return;
}
Iterator iterator = null;
if (ascendingPriority) {
iterator = tagDynamicIncludes.iterator();
}
else {
iterator = ListUtil.reverseIterator(tagDynamicIncludes);
}
while (iterator.hasNext()) {
TagDynamicInclude tagDynamicInclude = iterator.next();
try {
tagDynamicInclude.include(
request, response, tagClassName, tagDynamicId, tagPoint);
}
catch (Exception e) {
_log.error(e, e);
}
}
}
private static String _getKey(
String tagClassName, String tagDynamicId, String tagPoint) {
StringBundler sb = new StringBundler(5);
sb.append(tagClassName);
sb.append(CharPool.POUND);
sb.append(tagPoint);
sb.append(CharPool.POUND);
sb.append(tagDynamicId);
return sb.toString();
}
private TagDynamicIncludeUtil() {
_tagDynamicIncludes = ServiceTrackerCollections.openMultiValueMap(
TagDynamicInclude.class, null,
new ServiceReferenceMapper() {
@Override
public void map(
ServiceReference serviceReference,
final Emitter emitter) {
Registry registry = RegistryUtil.getRegistry();
TagDynamicInclude tagDynamicInclude = registry.getService(
serviceReference);
try {
tagDynamicInclude.register(
new TagDynamicInclude.TagDynamicIncludeRegistry() {
@Override
public void register(
String tagClassName, String tagDynamicId,
String tagPoint) {
String key = _getKey(
tagClassName, tagDynamicId, tagPoint);
emitter.emit(key);
}
});
}
finally {
registry.ungetService(serviceReference);
}
}
});
}
private static final Log _log = LogFactoryUtil.getLog(
TagDynamicIncludeUtil.class);
private static final TagDynamicIncludeUtil _instance =
new TagDynamicIncludeUtil();
private final ServiceTrackerMap>
_tagDynamicIncludes;
}