Subversion Repositories SmartDukaan

package in.shop2020.serving.services;

import java.io.Serializable;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.apache.log4j.Logger;

import in.shop2020.model.v1.catalog.Category;

import in.shop2020.model.v1.catalog.InventoryService.Client;

import in.shop2020.thrift.clients.CatalogServiceClient;

public class CategoryManager implements Serializable{

	private static final long serialVersionUID = 1L;

	private static CategoryManager categoryManager;

	private Map<Long, Category> categories;

	private static Logger log = Logger.getLogger(Class.class);

	static{

		synchronized(CategoryManager.class){

			categoryManager = new CategoryManager();

		}

	}

	@SuppressWarnings("unchecked")

	private CategoryManager(){

		log.info("Initializing category manager");

		categories = new HashMap<Long, Category>();

		try {

		    CatalogServiceClient catalogServiceClient = new CatalogServiceClient();

	        Client client = catalogServiceClient.getClient();

	        List<Category> t_categories =  client.getAllCategories();

	        for(Category category: t_categories){

	            categories.put(category.getId(), category);

	        }

	        for(Category category: t_categories){

	            if(category.getParent_category_id() != 0){

	                if(category.getParent_category_id()!=0){

	                    List<Long> childCats = categories.get(category.getParent_category_id()).getChildren_category_ids();

	                    if(childCats==null){

	                        childCats = new ArrayList<Long>();

	                    }

	                    childCats.add(category.getId());

	                }

	             }

            }

		} catch (Exception e) {

			log.error("Unable to load categories from Catalog.");

			categories = null;

			e.printStackTrace();

		}

		in.shop2020.utils.Logger.log("Initialized category manager", this);

	}

	public static CategoryManager getCategoryManager(){

		return categoryManager;

	}

	public Map<Long, Category> getCategories(){

		return this.categories;		

	}

	public String getCategoryLabel(long categoryId){

		Category category = this.categories.get(categoryId);

		if(category == null){

			return null;

		}

		return category.getLabel();

	}

	public Category getCategory(long categoryId){

		return this.categories.get(categoryId);

	}

}