001 /*
002 * SonarQube, open source software quality management tool.
003 * Copyright (C) 2008-2014 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.base.Preconditions;
023 import com.google.common.base.Predicate;
024 import com.google.common.collect.ArrayListMultimap;
025 import com.google.common.collect.Collections2;
026 import com.google.common.collect.ImmutableList;
027 import com.google.common.collect.ImmutableListMultimap;
028 import com.google.common.collect.ListMultimap;
029 import com.google.common.collect.Lists;
030 import org.sonar.api.ServerExtension;
031 import org.sonar.api.task.TaskExtension;
032
033 import java.util.Arrays;
034 import java.util.Collection;
035 import java.util.List;
036
037 /**
038 * @since 2.14
039 */
040 public class ResourceTypeTree implements TaskExtension, ServerExtension {
041
042 private final List<ResourceType> types;
043 private final ListMultimap<String, String> relations;
044 private final ResourceType root;
045
046 private ResourceTypeTree(Builder builder) {
047 this.types = ImmutableList.copyOf(builder.types);
048 this.relations = ImmutableListMultimap.copyOf(builder.relations);
049 this.root = builder.root;
050 }
051
052 public List<ResourceType> getTypes() {
053 return types;
054 }
055
056 public List<String> getChildren(String qualifier) {
057 return relations.get(qualifier);
058 }
059
060 public ResourceType getRootType() {
061 return root;
062 }
063
064 public List<String> getLeaves() {
065 return ImmutableList.copyOf(Collections2.filter(relations.values(), new Predicate<String>() {
066 @Override
067 public boolean apply(String qualifier) {
068 return relations.get(qualifier).isEmpty();
069 }
070 }));
071 }
072
073 @Override
074 public String toString() {
075 return root.getQualifier();
076 }
077
078 public static Builder builder() {
079 return new Builder();
080 }
081
082 public static final class Builder {
083 private List<ResourceType> types = Lists.newArrayList();
084 private ListMultimap<String, String> relations = ArrayListMultimap.create();
085 private ResourceType root;
086
087 private Builder() {
088 }
089
090 public Builder addType(ResourceType type) {
091 Preconditions.checkNotNull(type);
092 Preconditions.checkArgument(!types.contains(type), String.format("%s is already registered", type.getQualifier()));
093 types.add(type);
094 return this;
095 }
096
097 public Builder addRelations(String parentQualifier, String... childrenQualifiers) {
098 Preconditions.checkNotNull(parentQualifier);
099 Preconditions.checkNotNull(childrenQualifiers);
100 Preconditions.checkArgument(childrenQualifiers.length > 0, "childrenQualifiers can't be empty");
101 relations.putAll(parentQualifier, Arrays.asList(childrenQualifiers));
102 return this;
103 }
104
105 public ResourceTypeTree build() {
106 Collection<String> children = relations.values();
107 for (ResourceType type : types) {
108 if (!children.contains(type.getQualifier())) {
109 root = type;
110 break;
111 }
112 }
113 return new ResourceTypeTree(this);
114 }
115 }
116
117 }