001/* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2012 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar 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 * Sonar 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 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020package org.sonar.api.resources; 021 022import com.google.common.annotations.Beta; 023import com.google.common.base.Preconditions; 024import com.google.common.base.Predicate; 025import com.google.common.collect.ArrayListMultimap; 026import com.google.common.collect.Collections2; 027import com.google.common.collect.ImmutableList; 028import com.google.common.collect.ImmutableListMultimap; 029import com.google.common.collect.ListMultimap; 030import com.google.common.collect.Lists; 031import org.sonar.api.BatchExtension; 032import org.sonar.api.ServerExtension; 033import org.sonar.api.batch.InstantiationStrategy; 034 035import javax.annotation.concurrent.Immutable; 036 037import java.util.Arrays; 038import java.util.Collection; 039import java.util.List; 040 041/** 042 * @since 2.14 043 */ 044@Beta 045@Immutable 046@InstantiationStrategy(InstantiationStrategy.PER_BATCH) 047public final class ResourceTypeTree implements BatchExtension, ServerExtension { 048 049 private List<ResourceType> types; 050 private ListMultimap<String, String> relations; 051 private ResourceType root; 052 053 private ResourceTypeTree(Builder builder) { 054 this.types = ImmutableList.copyOf(builder.types); 055 this.relations = ImmutableListMultimap.copyOf(builder.relations); 056 this.root = builder.root; 057 } 058 059 public List<ResourceType> getTypes() { 060 return types; 061 } 062 063 public List<String> getChildren(String qualifier) { 064 return relations.get(qualifier); 065 } 066 067 public ResourceType getRootType() { 068 return root; 069 } 070 071 public List<String> getLeaves() { 072 return ImmutableList.copyOf(Collections2.filter(relations.values(), new Predicate<String>() { 073 public boolean apply(String qualifier) { 074 return relations.get(qualifier).isEmpty(); 075 } 076 })); 077 } 078 079 public static Builder builder() { 080 return new Builder(); 081 } 082 083 public static final class Builder { 084 private List<ResourceType> types = Lists.newArrayList(); 085 private ListMultimap<String, String> relations = ArrayListMultimap.create(); 086 private ResourceType root; 087 088 private Builder() { 089 } 090 091 public Builder addType(ResourceType type) { 092 Preconditions.checkNotNull(type); 093 Preconditions.checkArgument(!types.contains(type), String.format("%s is already registered", type.getQualifier())); 094 types.add(type); 095 return this; 096 } 097 098 public Builder addRelations(String parentQualifier, String... childrenQualifiers) { 099 Preconditions.checkNotNull(parentQualifier); 100 Preconditions.checkNotNull(childrenQualifiers); 101 Preconditions.checkArgument(childrenQualifiers.length > 0, "childrenQualifiers can't be empty"); 102 relations.putAll(parentQualifier, Arrays.asList(childrenQualifiers)); 103 return this; 104 } 105 106 public ResourceTypeTree build() { 107 Collection<String> children = relations.values(); 108 for (ResourceType type : types) { 109 if (!children.contains(type.getQualifier())) { 110 root = type; 111 break; 112 } 113 } 114 return new ResourceTypeTree(this); 115 } 116 } 117 118}