StorageAdapterRegistryImpl.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.dynamic.data.mapping.storage.impl;

import com.liferay.dynamic.data.mapping.storage.StorageAdapter;
import com.liferay.dynamic.data.mapping.storage.StorageAdapterRegistry;
import com.liferay.dynamic.data.mapping.storage.StorageType;

import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.osgi.service.component.annotations.ReferenceCardinality;
import org.osgi.service.component.annotations.ReferencePolicy;
import org.osgi.service.component.annotations.ReferencePolicyOption;

/**
 * @author Marcellus Tavares
 */
@Component(immediate = true)
public class StorageAdapterRegistryImpl implements StorageAdapterRegistry {

	@Override
	public StorageAdapter getDefaultStorageAdapter() {
		return _storageAdaptersMap.get(StorageType.JSON.getValue());
	}

	@Override
	public StorageAdapter getStorageAdapter(String storageType) {
		return _storageAdaptersMap.get(storageType);
	}

	@Override
	public Set<String> getStorageTypes() {
		return _storageAdaptersMap.keySet();
	}

	@Reference(
		cardinality = ReferenceCardinality.MULTIPLE,
		policy = ReferencePolicy.DYNAMIC,
		policyOption = ReferencePolicyOption.GREEDY,
		service = StorageAdapter.class
	)
	public void setStorageAdapter(StorageAdapter storageAdapter) {
		_storageAdaptersMap.put(
			storageAdapter.getStorageType(), storageAdapter);
	}

	public void unsetStorageAdapter(StorageAdapter storageAdapter) {
		_storageAdaptersMap.remove(storageAdapter);
	}

	private final Map<String, StorageAdapter> _storageAdaptersMap =
		new ConcurrentHashMap<>();

}