| /* |
| * 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.ivy.core.cache; |
| |
| import java.io.File; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.apache.ivy.core.RelativeUrlResolver; |
| import org.apache.ivy.core.module.id.ModuleId; |
| import org.apache.ivy.core.module.id.ModuleRevisionId; |
| import org.apache.ivy.core.module.status.StatusManager; |
| import org.apache.ivy.plugins.conflict.ConflictManager; |
| import org.apache.ivy.plugins.matcher.PatternMatcher; |
| import org.apache.ivy.plugins.namespace.Namespace; |
| import org.apache.ivy.plugins.parser.ParserSettings; |
| import org.apache.ivy.plugins.resolver.DependencyResolver; |
| import org.apache.ivy.util.Message; |
| |
| /** |
| * Keep traces of the usage of a ParserSettings in order to check afterwards that the relevant |
| * settings didn't changed. |
| * <p> |
| * A ParserSettingsMonitor provide a ParserSettings that must be used in place of the orignal one. |
| * </p> |
| * <p> |
| * The current implementation consider that a settings changed iff one of the used variable has |
| * changed. |
| * </p> |
| */ |
| class ParserSettingsMonitor { |
| |
| private ParserSettings delegatedSettings; |
| |
| private final Map/* <String,String> */substitutes; |
| |
| public ParserSettingsMonitor(ParserSettings settings) { |
| this.delegatedSettings = settings; |
| this.substitutes = new HashMap(); |
| } |
| |
| /** |
| * @return The parser settings that must be used in place of the orignal settings The returned |
| * object delegates all the call to the original settings. |
| */ |
| public ParserSettings getMonitoredSettings() { |
| return monitoredSettings; |
| } |
| |
| /** |
| * Free the ressource used during the monitoring, keeping only the info required to evaluate |
| * hasChanged. |
| */ |
| public void endMonitoring() { |
| monitoredSettings = null; |
| delegatedSettings = null; |
| } |
| |
| /** |
| * Check if the newSettings is compatible with the original settings that has been monitored. |
| * Only the info that was actually used is compared. |
| */ |
| public boolean hasChanged(ParserSettings newSettings) { |
| for (Iterator it = substitutes.entrySet().iterator(); it.hasNext();) { |
| Map.Entry entry = (Entry) it.next(); |
| String key = (String) entry.getKey(); |
| Object oldValue = entry.getValue(); |
| String newValue = newSettings.substitute(key); |
| if (!oldValue.equals(newValue)) { |
| Message.debug("settings variable has changed for : " + entry.getKey()); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private ParserSettings monitoredSettings = new ParserSettings() { |
| |
| public ConflictManager getConflictManager(String name) { |
| return delegatedSettings.getConflictManager(name); |
| } |
| |
| public PatternMatcher getMatcher(String matcherName) { |
| return delegatedSettings.getMatcher(matcherName); |
| } |
| |
| public Namespace getNamespace(String namespace) { |
| return delegatedSettings.getNamespace(namespace); |
| } |
| |
| public RelativeUrlResolver getRelativeUrlResolver() { |
| return delegatedSettings.getRelativeUrlResolver(); |
| } |
| |
| public ResolutionCacheManager getResolutionCacheManager() { |
| return delegatedSettings.getResolutionCacheManager(); |
| } |
| |
| public DependencyResolver getResolver(ModuleRevisionId mRevId) { |
| return delegatedSettings.getResolver(mRevId); |
| } |
| |
| public StatusManager getStatusManager() { |
| return delegatedSettings.getStatusManager(); |
| } |
| |
| public File resolveFile(String filename) { |
| return delegatedSettings.resolveFile(filename); |
| } |
| |
| public String getDefaultBranch(ModuleId moduleId) { |
| return delegatedSettings.getDefaultBranch(moduleId); |
| } |
| |
| public Namespace getContextNamespace() { |
| return delegatedSettings.getContextNamespace(); |
| } |
| |
| public Map substitute(Map strings) { |
| Map substituted = new LinkedHashMap(); |
| for (Iterator it = strings.entrySet().iterator(); it.hasNext();) { |
| Map.Entry entry = (Map.Entry) it.next(); |
| substituted.put(entry.getKey(), substitute((String) entry.getValue())); |
| } |
| return substituted; |
| } |
| |
| public String substitute(String value) { |
| String r = delegatedSettings.substitute(value); |
| if (value != null && value != r) { |
| substitutes.put(value, r); |
| } |
| return r; |
| } |
| }; |
| } |