/*-
 * ~~~~~~licensing~~~~~~
 * object-producer-core
 * ==========
 * Copyright (C) 2020 - 2023 EmDev LLC
 * ==========
 * You may not use this file except in accordance with the License Terms of the Copyright
 * Holder located at: https://entaxy.ru/eula . All copyrights, all intellectual property
 * rights to the Software and any copies are the property of the Copyright Holder. Unless
 * it is explicitly allowed the Copyright Holder, the User is prohibited from using the
 * Software for commercial purposes to provide services to third parties.
 * 
 * The Copyright Holder hereby declares that the Software is provided on an "AS IS".
 * Under no circumstances does the Copyright Holder guarantee or promise that the
 * Software provided by him will be suitable or not suitable for the specific purposes
 * of the User, that the Software will meet all commercial and personal subjective
 * expectations of the User, that the Software will work properly, without technical
 * errors, quickly and uninterruptedly.
 * 
 * Under no circumstances shall the Copyright Holder or its Affiliates is not liable
 * to the User for any direct or indirect losses of the User, his expenses or actual
 * damage, including, downtime; loss of bussines; lost profit; lost earnings; loss
 * or damage to data, property, etc.
 * ~~~~~~/licensing~~~~~~
 */
package ru.entaxy.platform.core.producer.impl;

import java.util.List;

import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.CollectionType;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.FieldOption;
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;

import ru.entaxy.platform.core.producer.api.EntaxyFactoryDataProcessor;

@Component (service = EntaxyFactoryDataProcessorService.class, immediate = true)
public class EntaxyFactoryDataProcessorService implements EntaxyFactoryDataProcessor {

	private static EntaxyFactoryDataProcessorService _INSTANCE = null;
	
	public static EntaxyFactoryDataProcessorService getInstance() {
		return _INSTANCE;
	}
	
	@Reference (cardinality = ReferenceCardinality.MULTIPLE, collectionType = CollectionType.SERVICE, fieldOption = FieldOption.UPDATE, 
			policy = ReferencePolicy.DYNAMIC, policyOption = ReferencePolicyOption.GREEDY, service = EntaxyFactoryDataProcessor.class)
	List<EntaxyFactoryDataProcessor> processors;
	
	@Activate
	public void activate() {
		_INSTANCE = this;
	}
	
	@Override
	public Object processDefaultValue(Object currentValue) {
		Object result = currentValue;
		for (EntaxyFactoryDataProcessor p: processors) {
			result = p.processDefaultValue(result);
		}
		return result;
	}
	
}
