/*
* 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.ModuleConflictResolver;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.ComponentResolutionState;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
class CompositeConflictResolver implements ModuleConflictResolver {
private final List<ModuleConflictResolver> resolvers = new LinkedList<ModuleConflictResolver>();
public <T extends ComponentResolutionState> T select(Collection<? extends T> candidates) {
for (ModuleConflictResolver r : resolvers) {
T selection = r.select(candidates);
if (selection != null) {
return selection;
}
}
throw new IllegalStateException(this.getClass().getSimpleName()
+ " was unable to select a candidate using resolvers: " + resolvers + ". Candidates: " + candidates);
}
void addFirst(ModuleConflictResolver conflictResolver) {
resolvers.add(0, conflictResolver);
}
}