/*
* Copyright 2007-2008 the original author or authors.
*
* Licensed 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.gradle.api.internal.project;
import org.gradle.api.InvalidUserDataException;
import org.gradle.api.specs.Spec;
import org.gradle.util.GUtil;
import java.io.File;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public class DefaultProjectRegistry<T extends ProjectIdentifier> implements ProjectRegistry<T> {
private Map<String, T> projects = new HashMap<String, T>();
private Map<String, Set<T>> subProjects = new HashMap<String, Set<T>>();
public void addProject(T project) {
projects.put(project.getPath(), project);
subProjects.put(project.getPath(), new HashSet<T>());
addProjectToParentSubProjects(project);
}
public T removeProject(String path) {
T project = projects.remove(path);
assert project != null;
subProjects.remove(path);
ProjectIdentifier loopProject = project.getParentIdentifier();
while (loopProject != null) {
subProjects.get(loopProject.getPath()).remove(project);
loopProject = loopProject.getParentIdentifier();
}
return project;
}
private void addProjectToParentSubProjects(T project) {
ProjectIdentifier loopProject = project.getParentIdentifier();
while (loopProject != null) {
subProjects.get(loopProject.getPath()).add(project);
loopProject = loopProject.getParentIdentifier();
}
}
public Set<T> getAllProjects() {
return new HashSet<T>(projects.values());
}
public T getProject(String path) {
return projects.get(path);
}
public T getProject(final File projectDir) {
Set<T> projects = findAll(new Spec<T>() {
public boolean isSatisfiedBy(T element) {
return element.getProjectDir().equals(projectDir);
}
});
if (projects.size() > 1) {
throw new InvalidUserDataException(String.format("Found multiple projects with project directory '%s': %s",
projectDir, projects));
}
return projects.size() == 1 ? projects.iterator().next() : null;
}
public Set<T> getAllProjects(String path) {
Set<T> result = new HashSet<T>(getSubProjects(path));
if (projects.get(path) != null) {
result.add(projects.get(path));
}
return result;
}
public Set<T> getSubProjects(String path) {
return GUtil.elvis(subProjects.get(path), new HashSet<T>());
}
public Set<T> findAll(Spec<? super T> constraint) {
Set<T> matches = new HashSet<T>();
for (T project : projects.values()) {
if (constraint.isSatisfiedBy(project)) {
matches.add(project);
}
}
return matches;
}
}