gradle-master/subprojects/dependency-management/src/main/java/org/gradle/internal/component/external/model/NoOpDerivationStrategy.java
/*
 * Copyright 2018 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.internal.component.external.model;

import com.google.common.collect.ImmutableList;
import org.gradle.internal.component.model.ModuleConfigurationMetadata;

public class NoOpDerivationStrategy extends AbstractStatelessDerivationStrategy {
    private static final NoOpDerivationStrategy INSTANCE = new NoOpDerivationStrategy();

    private NoOpDerivationStrategy() {
    }

    public static NoOpDerivationStrategy getInstance() {
        return INSTANCE;
    }

    @Override
    public boolean derivesVariants() {
        return false;
    }

    @Override
    public ImmutableList<? extends ModuleConfigurationMetadata> derive(ModuleComponentResolveMetadata metadata) {
        throw new UnsupportedOperationException("This method should not have been called.");
    }
}
