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CompatibilityCheckDetails.java
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CompatibilityCheckDetails.java
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/*
* 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.attributes;
import javax.annotation.Nullable;
/**
* Provides context about attribute compatibility checks, and allows the user to define
* when an attribute is compatible with another.
* <p>
* A compatibility check will <em>never</em> be performed when the consumer and producer values are equal.
*
* @param <T> the concrete type of the attribute
*
* @since 3.3
*/
public interface CompatibilityCheckDetails<T> {
/**
* The value of the attribute as found on the consumer side.
* <p>
* Never equal to the {@link #getProducerValue()}.
*
* @return the value from the consumer
*/
@Nullable
T getConsumerValue();
/**
* The value of the attribute as found on the producer side.
* <p>
* Never equal to the {@link #getConsumerValue()}.
*
* @return the value from the producer
*/
@Nullable
T getProducerValue();
/**
* Calling this method will indicate that the attributes are compatible.
*/
void compatible();
/**
* Calling this method will indicate that the attributes are incompatible.
*/
void incompatible();
}