001 /*
002 * SonarQube, open source software quality management tool.
003 * Copyright (C) 2008-2013 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * SonarQube is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * SonarQube is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public License
017 * along with this program; if not, write to the Free Software Foundation,
018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
019 */
020 package org.sonar.api.resources;
021
022 import com.google.common.annotations.Beta;
023 import com.google.common.base.Preconditions;
024 import com.google.common.base.Predicate;
025 import com.google.common.collect.ArrayListMultimap;
026 import com.google.common.collect.Collections2;
027 import com.google.common.collect.ImmutableList;
028 import com.google.common.collect.ImmutableListMultimap;
029 import com.google.common.collect.ListMultimap;
030 import com.google.common.collect.Lists;
031 import org.sonar.api.ServerExtension;
032 import org.sonar.api.task.TaskExtension;
033
034 import javax.annotation.concurrent.Immutable;
035
036 import java.util.Arrays;
037 import java.util.Collection;
038 import java.util.List;
039
040 /**
041 * @since 2.14
042 */
043 @Beta
044 @Immutable
045 public class ResourceTypeTree implements TaskExtension, ServerExtension {
046
047 private List<ResourceType> types;
048 private ListMultimap<String, String> relations;
049 private ResourceType root;
050
051 private ResourceTypeTree(Builder builder) {
052 this.types = ImmutableList.copyOf(builder.types);
053 this.relations = ImmutableListMultimap.copyOf(builder.relations);
054 this.root = builder.root;
055 }
056
057 public List<ResourceType> getTypes() {
058 return types;
059 }
060
061 public List<String> getChildren(String qualifier) {
062 return relations.get(qualifier);
063 }
064
065 public ResourceType getRootType() {
066 return root;
067 }
068
069 public List<String> getLeaves() {
070 return ImmutableList.copyOf(Collections2.filter(relations.values(), new Predicate<String>() {
071 public boolean apply(String qualifier) {
072 return relations.get(qualifier).isEmpty();
073 }
074 }));
075 }
076
077 public static Builder builder() {
078 return new Builder();
079 }
080
081 public static final class Builder {
082 private List<ResourceType> types = Lists.newArrayList();
083 private ListMultimap<String, String> relations = ArrayListMultimap.create();
084 private ResourceType root;
085
086 private Builder() {
087 }
088
089 public Builder addType(ResourceType type) {
090 Preconditions.checkNotNull(type);
091 Preconditions.checkArgument(!types.contains(type), String.format("%s is already registered", type.getQualifier()));
092 types.add(type);
093 return this;
094 }
095
096 public Builder addRelations(String parentQualifier, String... childrenQualifiers) {
097 Preconditions.checkNotNull(parentQualifier);
098 Preconditions.checkNotNull(childrenQualifiers);
099 Preconditions.checkArgument(childrenQualifiers.length > 0, "childrenQualifiers can't be empty");
100 relations.putAll(parentQualifier, Arrays.asList(childrenQualifiers));
101 return this;
102 }
103
104 public ResourceTypeTree build() {
105 Collection<String> children = relations.values();
106 for (ResourceType type : types) {
107 if (!children.contains(type.getQualifier())) {
108 root = type;
109 break;
110 }
111 }
112 return new ResourceTypeTree(this);
113 }
114 }
115
116 }