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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.eclipse.aether.collection;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.eclipse.aether.RepositorySystem;
import org.eclipse.aether.RequestTrace;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.graph.Dependency;
import org.eclipse.aether.repository.RemoteRepository;
/**
* A request to collect the transitive dependencies and to build a dependency graph from them. There are three ways to
* create a dependency graph. First, only the root dependency can be given. Second, a root dependency and direct
* dependencies can be specified in which case the specified direct dependencies are merged with the direct dependencies
* retrieved from the artifact descriptor of the root dependency. And last, only direct dependencies can be specified in
* which case the root node of the resulting graph has no associated dependency.
*
* @see RepositorySystem#collectDependencies(org.eclipse.aether.RepositorySystemSession, CollectRequest)
*/
public final class CollectRequest {
private Artifact rootArtifact;
private Dependency root;
private List dependencies = Collections.emptyList();
private List managedDependencies = Collections.emptyList();
private List repositories = Collections.emptyList();
private String context = "";
private RequestTrace trace;
/**
* Creates an uninitialized request.
*/
public CollectRequest() {
// enables default constructor
}
/**
* Creates a request with the specified properties.
*
* @param root The root dependency whose transitive dependencies should be collected, may be {@code null}.
* @param repositories The repositories to use for the collection, may be {@code null}.
*/
public CollectRequest(Dependency root, List repositories) {
setRoot(root);
setRepositories(repositories);
}
/**
* Creates a new request with the specified properties.
*
* @param root The root dependency whose transitive dependencies should be collected, may be {@code null}.
* @param dependencies The direct dependencies to merge with the direct dependencies from the root dependency's
* artifact descriptor.
* @param repositories The repositories to use for the collection, may be {@code null}.
*/
public CollectRequest(Dependency root, List dependencies, List repositories) {
setRoot(root);
setDependencies(dependencies);
setRepositories(repositories);
}
/**
* Creates a new request with the specified properties.
*
* @param dependencies The direct dependencies of some imaginary root, may be {@code null}.
* @param managedDependencies The dependency management information to apply to the transitive dependencies, may be
* {@code null}.
* @param repositories The repositories to use for the collection, may be {@code null}.
*/
public CollectRequest(
List dependencies, List managedDependencies, List repositories) {
setDependencies(dependencies);
setManagedDependencies(managedDependencies);
setRepositories(repositories);
}
/**
* Gets the root artifact for the dependency graph.
*
* @return The root artifact for the dependency graph or {@code null} if none.
*/
public Artifact getRootArtifact() {
return rootArtifact;
}
/**
* Sets the root artifact for the dependency graph. This must not be confused with {@link #setRoot(Dependency)}: The
* root dependency, like any other specified dependency, will be subject to dependency
* collection/resolution, i.e. should have an artifact descriptor and a corresponding artifact file. The root
* artifact on the other hand is only used as a label for the root node of the graph in case no root
* dependency was specified. As such, the configured root artifact is ignored if {@link #getRoot()} does not return
* {@code null}.
*
* @param rootArtifact The root artifact for the dependency graph, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest setRootArtifact(Artifact rootArtifact) {
this.rootArtifact = rootArtifact;
return this;
}
/**
* Gets the root dependency of the graph.
*
* @return The root dependency of the graph or {@code null} if none.
*/
public Dependency getRoot() {
return root;
}
/**
* Sets the root dependency of the graph.
*
* @param root The root dependency of the graph, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest setRoot(Dependency root) {
this.root = root;
return this;
}
/**
* Gets the direct dependencies.
*
* @return The direct dependencies, never {@code null}.
*/
public List getDependencies() {
return dependencies;
}
/**
* Sets the direct dependencies. If both a root dependency and direct dependencies are given in the request, the
* direct dependencies from the request will be merged with the direct dependencies from the root dependency's
* artifact descriptor, giving higher priority to the dependencies from the request.
*
* @param dependencies The direct dependencies, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest setDependencies(List dependencies) {
if (dependencies == null) {
this.dependencies = Collections.emptyList();
} else {
this.dependencies = dependencies;
}
return this;
}
/**
* Adds the specified direct dependency.
*
* @param dependency The dependency to add, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest addDependency(Dependency dependency) {
if (dependency != null) {
if (this.dependencies.isEmpty()) {
this.dependencies = new ArrayList<>();
}
this.dependencies.add(dependency);
}
return this;
}
/**
* Gets the dependency management to apply to transitive dependencies.
*
* @return The dependency management to apply to transitive dependencies, never {@code null}.
*/
public List getManagedDependencies() {
return managedDependencies;
}
/**
* Sets the dependency management to apply to transitive dependencies. To clarify, this management does not apply to
* the direct dependencies of the root node.
*
* @param managedDependencies The dependency management, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest setManagedDependencies(List managedDependencies) {
if (managedDependencies == null) {
this.managedDependencies = Collections.emptyList();
} else {
this.managedDependencies = managedDependencies;
}
return this;
}
/**
* Adds the specified managed dependency.
*
* @param managedDependency The managed dependency to add, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest addManagedDependency(Dependency managedDependency) {
if (managedDependency != null) {
if (this.managedDependencies.isEmpty()) {
this.managedDependencies = new ArrayList<>();
}
this.managedDependencies.add(managedDependency);
}
return this;
}
/**
* Gets the repositories to use for the collection.
*
* @return The repositories to use for the collection, never {@code null}.
*/
public List getRepositories() {
return repositories;
}
/**
* Sets the repositories to use for the collection.
*
* @param repositories The repositories to use for the collection, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest setRepositories(List repositories) {
if (repositories == null) {
this.repositories = Collections.emptyList();
} else {
this.repositories = repositories;
}
return this;
}
/**
* Adds the specified repository for collection.
*
* @param repository The repository to collect dependency information from, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest addRepository(RemoteRepository repository) {
if (repository != null) {
if (this.repositories.isEmpty()) {
this.repositories = new ArrayList<>();
}
this.repositories.add(repository);
}
return this;
}
/**
* Gets the context in which this request is made.
*
* @return The context, never {@code null}.
*/
public String getRequestContext() {
return context;
}
/**
* Sets the context in which this request is made.
*
* @param context The context, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest setRequestContext(String context) {
this.context = (context != null) ? context : "";
return this;
}
/**
* Gets the trace information that describes the higher level request/operation in which this request is issued.
*
* @return The trace information about the higher level operation or {@code null} if none.
*/
public RequestTrace getTrace() {
return trace;
}
/**
* Sets the trace information that describes the higher level request/operation in which this request is issued.
*
* @param trace The trace information about the higher level operation, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public CollectRequest setTrace(RequestTrace trace) {
this.trace = trace;
return this;
}
@Override
public String toString() {
return getRoot() + " -> " + getDependencies() + " < " + getRepositories();
}
}
