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• CacheResolver.java

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org.springframework.data.gemfire.CacheResolver Maven / Gradle / Ivy

/*
 * Copyright 2020-2021 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
 *
 *      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 org.springframework.data.gemfire;

import java.util.function.Supplier;

import org.apache.geode.cache.GemFireCache;

/**
 * Strategy interface for resolving a instance reference to a {@link GemFireCache}.
 *
 * @author John Blum
 * @param  {@link Class subclass} of {@link GemFireCache}.
 * @see java.util.function.Supplier
 * @see org.apache.geode.cache.Cache
 * @see org.apache.geode.cache.GemFireCache
 * @see org.apache.geode.cache.client.ClientCache
 * @since 2.3.0
 */
@FunctionalInterface
public interface CacheResolver extends Supplier {

	/**
	 * Gets the resolved instance of the {@link GemFireCache}.
	 *
	 * @return the resolved instance of the {@link GemFireCache}.
	 * @see #resolve()
	 */
	@Override
	default T get() {
		return resolve();
	}

	/**
	 * Resolves the instance reference to the {@link GemFireCache} implementation.
	 *
	 * @return a instance reference to a {@link GemFireCache} implementation.
	 */
	T resolve();

}