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