/*
* Copyright 2016 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.artifacts.ivyservice.resolveengine.artifact;
import org.gradle.internal.operations.BuildOperationQueue;
import org.gradle.internal.operations.RunnableBuildOperation;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
public class CompositeArtifactSet implements ResolvedArtifactSet {
private final List<ResolvedArtifactSet> sets;
private CompositeArtifactSet(List<ResolvedArtifactSet> sets) {
this.sets = sets;
}
public static ResolvedArtifactSet of(Collection<? extends ResolvedArtifactSet> sets) {
List<ResolvedArtifactSet> filtered = new ArrayList<ResolvedArtifactSet>(sets.size());
for (ResolvedArtifactSet set : sets) {
if (set != ResolvedArtifactSet.EMPTY) {
filtered.add(set);
}
}
if (filtered.isEmpty()) {
return EMPTY;
}
if (filtered.size() == 1) {
return filtered.get(0);
}
return new CompositeArtifactSet(filtered);
}
@Override
public Completion startVisit(BuildOperationQueue<RunnableBuildOperation> actions, AsyncArtifactListener listener) {
List<Completion> results = new ArrayList<Completion>(sets.size());
for (ResolvedArtifactSet set : sets) {
results.add(set.startVisit(actions, listener));
}
return new CompositeResult(results);
}
@Override
public void collectBuildDependencies(BuildDependenciesVisitor visitor) {
for (ResolvedArtifactSet set : sets) {
set.collectBuildDependencies(visitor);
}
}
private static class CompositeResult implements Completion {
private final List<Completion> results;
CompositeResult(List<Completion> results) {
this.results = results;
}
@Override
public void visit(ArtifactVisitor visitor) {
for (Completion result : results) {
result.visit(visitor);
}
}
}
}