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Data Repository Support for Micronaut

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/*
 * Copyright 2017-2020 original 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
 *
 * https://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 io.micronaut.data.intercept;

import io.micronaut.core.annotation.Internal;
import io.micronaut.inject.ExecutableMethod;

import java.util.Objects;

/**
 * Key used to cache results for repository method invocations.
 *
 * @author graemerocher
 * @since 1.0
 */
@Internal
public final class RepositoryMethodKey {
    private final Object repository;
    private final ExecutableMethod method;
    private final int hashCode;

    /**
     * @param repository The repository instance
     * @param method     The method
     */
    public RepositoryMethodKey(Object repository, ExecutableMethod method) {
        this.repository = repository;
        this.method = method;
        this.hashCode = Objects.hash(repository, method);
    }

    public Object repository() {
        return repository;
    }

    public ExecutableMethod method() {
        return method;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (obj == null || obj.getClass() != this.getClass()) {
            return false;
        }
        var that = (RepositoryMethodKey) obj;
        return Objects.equals(this.repository, that.repository) &&
                Objects.equals(this.method, that.method);
    }

    @Override
    public int hashCode() {
        return hashCode;
    }

}