org.gradle.api.internalivyservice.resolveengine.graph.conflicts.CompositeConflictResolver Maven / Gradle / Ivy
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Gradle 6.9.1 API redistribution.
/*
* Copyright 2014 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.graph.conflicts;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.ConflictResolverDetails;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.ModuleConflictResolver;
import javax.annotation.Nullable;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
class CompositeConflictResolver implements ModuleConflictResolver {
private final List> resolvers = new LinkedList<>();
@Override
public void select(ConflictResolverDetails details) {
CompositeDetails composite = new CompositeDetails<>(details);
for (ModuleConflictResolver r : resolvers) {
r.select(composite);
if (composite.hasResult) {
return;
}
}
throw new IllegalStateException(this.getClass().getSimpleName()
+ " was unable to select a candidate using resolvers: " + resolvers + ". Candidates: " + details.getCandidates());
}
void addFirst(ModuleConflictResolver conflictResolver) {
resolvers.add(0, conflictResolver);
}
private static class CompositeDetails implements ConflictResolverDetails {
private final ConflictResolverDetails delegate;
private boolean hasResult;
private CompositeDetails(ConflictResolverDetails delegate) {
this.delegate = delegate;
}
@Override
public Collection getCandidates() {
return delegate.getCandidates();
}
@Override
public void select(T candidate) {
hasResult = true;
delegate.select(candidate);
}
@Override
public void fail(Throwable error) {
hasResult = true;
delegate.fail(error);
}
@Override
public T getSelected() {
return delegate.getSelected();
}
@Nullable
@Override
public Throwable getFailure() {
return delegate.getFailure();
}
@Override
public boolean hasFailure() {
return delegate.hasFailure();
}
@Override
public boolean hasSelected() {
return delegate.hasSelected();
}
}
}