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package in.shop2020.serving.services;
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import java.io.Serializable;
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import java.util.Map;
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import org.apache.log4j.Logger;
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import in.shop2020.serving.utils.Category;
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import in.shop2020.serving.utils.Utils;
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public class CategoryManager implements Serializable{
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	private static final long serialVersionUID = 1L;
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	private static CategoryManager categoryManager;
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	private Map<Long, Category> categories;
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	private static Logger log = Logger.getLogger(Class.class);
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	static{
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		synchronized(CategoryManager.class){
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			categoryManager = new CategoryManager();
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		}
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	}
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	@SuppressWarnings("unchecked")
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	private CategoryManager(){
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		log.info("Initializing category manager");
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		try {
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			categories = (Map<Long, Category>)Utils.getCategories();
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		} catch (Exception e) {
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			log.error("Unable to load categories from Catalog.");
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			categories = null;
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			e.printStackTrace();
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		}
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		in.shop2020.utils.Logger.log("Initialized category manager", this);
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	}
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	public static CategoryManager getCategoryManager(){
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		return categoryManager;
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	}
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	public Map<Long, Category> getCategories(){
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		return this.categories;
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	}
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	public String getCategoryLabel(long categoryId){
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		Category category = this.categories.get(categoryId);
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		if(category == null){
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			return null;
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		}
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		return category.getLabel();
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	}
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	public Category getCategory(long categoryId){
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		return this.categories.get(categoryId);
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	}
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}