/*
* Copyright 2012 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.plugins.buildcomparison.outcome.internal;
import org.gradle.api.Transformer;
public class ByTypeAndCharacteristicBuildOutcomeAssociator<T extends BuildOutcome> implements BuildOutcomeAssociator {
private final Class<? extends T> type;
private final Transformer<?, T> characteristicTransformer;
public ByTypeAndCharacteristicBuildOutcomeAssociator(Class<? extends T> type, Transformer<?, T> characteristicTransformer) {
this.type = type;
this.characteristicTransformer = characteristicTransformer;
}
public Class<? extends BuildOutcome> findAssociationType(BuildOutcome source, BuildOutcome target) {
if (type.isInstance(source) && type.isInstance(target)) {
Object fromCharacteristic = characteristicTransformer.transform(type.cast(source));
Object toCharacteristic = characteristicTransformer.transform(type.cast(target));
if (fromCharacteristic == null && toCharacteristic == null) {
return type;
} else if (fromCharacteristic == null || toCharacteristic == null) {
return null;
} else if (fromCharacteristic.equals(toCharacteristic)) {
return type;
} else {
return null;
}
} else {
return null;
}
}
}