| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.sling.scripting.java.impl; |
| |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| /** |
| * This is a simple in memory cache for compiled servlets. |
| */ |
| public final class ServletCache { |
| |
| /** |
| * Maps servlet source urls to servlet wrappers. |
| */ |
| private ConcurrentHashMap<String, ServletWrapper> servlets = new ConcurrentHashMap<String, ServletWrapper>(); |
| |
| /** |
| * Add a new ServletWrapper. |
| * |
| * @param servletUri Servlet URI |
| * @param sw Servlet wrapper |
| */ |
| public ServletWrapper addWrapper(final String servletUri, final ServletWrapper sw) { |
| ServletWrapper previous = servlets.putIfAbsent(servletUri, sw); |
| if ( previous != null ) { |
| return previous; |
| } |
| return sw; |
| } |
| |
| /** |
| * Get an already existing ServletWrapper. |
| * |
| * @param servletUri Servlet URI |
| * @return ServletWrapper |
| */ |
| public ServletWrapper getWrapper(final String servletUri) { |
| return servlets.get(servletUri); |
| } |
| |
| /** |
| * Remove a ServletWrapper. |
| * |
| * @param servletUri Servlet URI |
| * @param isRemove Is a remove |
| */ |
| public void removeWrapper(final String servletUri, final boolean isRemove) { |
| final ServletWrapper wrapper = servlets.remove(servletUri); |
| if ( wrapper != null ) { |
| wrapper.destroy(); |
| } else if ( isRemove ) { |
| final Iterator<Map.Entry<String, ServletWrapper>> iter = servlets.entrySet().iterator(); |
| while ( iter.hasNext() ) { |
| final Map.Entry<String, ServletWrapper> entry = iter.next(); |
| if ( entry.getKey().startsWith(servletUri) ) { |
| iter.remove(); |
| entry.getValue().destroy(); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Process a "destroy" event for this web application context. |
| */ |
| public void destroy() { |
| Iterator<ServletWrapper> i = this.servlets.values().iterator(); |
| while (i.hasNext()) { |
| i.next().destroy(); |
| } |
| } |
| } |