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TaskDependency.java
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TaskDependency.java
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/*
* 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.tasks;
import org.gradle.api.Task;
import org.gradle.internal.accesscontrol.ForExternalUse;
import javax.annotation.Nullable;
import java.util.Set;
/**
* <p>A <code>TaskDependency</code> represents an <em>unordered</em> set of tasks which a {@link Task} depends on.
* Gradle ensures that all the dependencies of a task are executed before the task itself is executed.</p>
*
* <p>You can add a <code>TaskDependency</code> to a task by calling the task's {@link Task#dependsOn(Object...)}
* method.</p>
*/
public interface TaskDependency {
/**
* <p>Determines the dependencies for the given {@link Task}. This method is called when Gradle assembles the task
* execution graph for a build. This occurs after all the projects have been evaluated, and before any task
* execution begins.</p>
*
* @param task The task to determine the dependencies for.
* @return The tasks which the given task depends on. Returns an empty set if the task has no dependencies.
*/
@ForExternalUse // see TaskDependencyInternal.getDependencies
Set<? extends Task> getDependencies(@Nullable Task task);
}