JsonCooperatorConverter.java

/*
 * Copyright 2020 Global Crop Diversity Trust
 *
 * 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.gringlobal.custom.json.converter;

import com.fasterxml.jackson.databind.util.StdConverter;

/**
 * The JsonCooperatorConverter converts Cooperator IDs to Cooperator names.
 */
public class JsonCooperatorConverter extends StdConverter<Long, String> {

	private static CooperatorProvider COOPERATOR_PROVIDER;

	public interface CooperatorProvider {
		String getCooperatorName(long id);
	}

	/**
	 * Sets the cooperator provider.
	 *
	 * @param cooperatorProvider the new cooperator provider
	 */
	public static void setCooperatorProvider(CooperatorProvider cooperatorProvider) {
		COOPERATOR_PROVIDER = cooperatorProvider;
	}

	/**
	 * Convert Cooperator ID to Cooperator name using COOPERATOR_PROVIDER (when available)
	 */
	@Override
	public String convert(Long value) {
		if (value == null) {
			return null;
		} else {
			if (COOPERATOR_PROVIDER == null) {
				return Long.toString(value);
			} else {
				return COOPERATOR_PROVIDER.getCooperatorName(value);
			}
		}
	}
}