Java tutorial
/* * Copyright 2012 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.execution.plan; import com.google.common.collect.Iterables; import com.google.common.collect.Sets; import java.util.NavigableSet; import java.util.Set; public abstract class TaskNode extends Node { private final NavigableSet<Node> mustSuccessors = Sets.newTreeSet(); private final NavigableSet<Node> shouldSuccessors = Sets.newTreeSet(); private final NavigableSet<Node> finalizers = Sets.newTreeSet(); private final NavigableSet<Node> finalizingSuccessors = Sets.newTreeSet(); @Override public boolean allDependenciesComplete() { if (!super.allDependenciesComplete()) { return false; } for (Node dependency : mustSuccessors) { if (!dependency.isComplete()) { return false; } } for (Node dependency : finalizingSuccessors) { if (!dependency.isComplete()) { return false; } } return true; } public Set<Node> getMustSuccessors() { return mustSuccessors; } public Set<Node> getFinalizers() { return finalizers; } public Set<Node> getFinalizingSuccessors() { return finalizingSuccessors; } public Set<Node> getShouldSuccessors() { return shouldSuccessors; } protected void addMustSuccessor(Node toNode) { mustSuccessors.add(toNode); } protected void addFinalizingSuccessor(TaskNode finalized) { finalizingSuccessors.add(finalized); } protected void addFinalizer(TaskNode finalizerNode) { finalizers.add(finalizerNode); finalizerNode.addFinalizingSuccessor(this); } protected void addShouldSuccessor(Node toNode) { shouldSuccessors.add(toNode); } public void removeShouldSuccessor(TaskNode toNode) { shouldSuccessors.remove(toNode); } @Override public Iterable<Node> getAllSuccessors() { return Iterables.concat(getMustSuccessors(), getFinalizingSuccessors(), super.getAllSuccessors()); } @Override public Iterable<Node> getAllSuccessorsInReverseOrder() { return Iterables.concat(super.getAllSuccessorsInReverseOrder(), mustSuccessors.descendingSet(), finalizingSuccessors.descendingSet(), shouldSuccessors.descendingSet()); } @Override public boolean hasHardSuccessor(Node successor) { if (super.hasHardSuccessor(successor)) { return true; } if (!(successor instanceof TaskNode)) { return false; } return getMustSuccessors().contains(successor) || getFinalizingSuccessors().contains(successor); } }