package foundation.dao.version;

import foundation.dao.preload.Bucket;
import foundation.util.Util;

public class ApplyRelationBucket extends Bucket<ApplyRelation> {

	private static ApplyRelationBucket instance;
	
	private ApplyRelationBucket() {
		
	}
	
	public static synchronized ApplyRelationBucket getInstance() {
		if (instance == null) {
			instance = new ApplyRelationBucket();
		}
		
		return instance;
	}

	public void loadOne(String dataName, String applyTypeCode, ApplyRelation relation) {
		String key = createKey(dataName, applyTypeCode);
		super.loadOne(key, relation);
	}

	public ApplyRelation get(String dataName, String applyTypeCode) {
		if (Util.isEmpty(applyTypeCode)) {
			return super.get(dataName);
		}
		
		String key = createKey(dataName, applyTypeCode);
		ApplyRelation relation = super.get(key);
		
		if (relation != null) {
			return relation;
		}
		
		relation = super.get(dataName);
		return relation;
	}

	private String createKey(String dataName, String applyTypeCode) {
		if (Util.isEmpty(applyTypeCode)) {
			return dataName;
		}
		
		return dataName + "_" + applyTypeCode;
	}

}