StoreBreadcrumbsTag.java

package com.salesmanager.shop.tags;

import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.salesmanager.shop.constants.Constants;
import com.salesmanager.shop.model.shop.Breadcrumb;


public class StoreBreadcrumbsTag extends TagSupport {
	
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	private static final Logger LOGGER = LoggerFactory.getLogger(StoreBreadcrumbsTag.class);

	private Long categoryId = null;
	private Long productId = null;

	public int doStartTag() throws JspException {
		try {



			HttpServletRequest request = (HttpServletRequest) pageContext
					.getRequest();

			Breadcrumb breadCrumb = (Breadcrumb)request.getAttribute(Constants.BREADCRUMB);
			
			StringBuilder ref = new StringBuilder();
			
			if(breadCrumb!=null && !StringUtils.isBlank(breadCrumb.getUrlRefContent())) {
				ref.append(Constants.SLASH).append(Constants.REF).append(Constants.EQUALS).append(breadCrumb.getUrlRefContent());
				if(categoryId!=null) {
					List<String> ids = this.parseBreadCrumb(breadCrumb.getUrlRefContent());
					if(!ids.contains(String.valueOf(this.getCategoryId()))) {
						ref.append(",").append(this.getCategoryId().longValue());
					}
				}
			} else {
				if(categoryId!=null) {
					ref.append(Constants.SLASH).append(Constants.REF).append(Constants.EQUALS).append(Constants.REF_C).append(this.getCategoryId());
				} else {
					ref.append("");
				}
			}


			pageContext.getOut().print(ref.toString());


			
		} catch (Exception ex) {
			LOGGER.error("Error while getting content url", ex);
		}
		return SKIP_BODY;
	}
	
	/** only category **/
	private List<String> parseBreadCrumb(String refContent) throws Exception {
		
		/** c:1,2,3 **/
		String[] categoryComa = refContent.split(":");
		String[] categoryIds = categoryComa[1].split(",");
		return new LinkedList(Arrays.asList(categoryIds));
		
		
	}

	public int doEndTag() {
		return EVAL_PAGE;
	}

	public Long getCategoryId() {
		return categoryId;
	}

	public void setCategoryId(Long categoryId) {
		this.categoryId = categoryId;
	}

	public Long getProductId() {
		return productId;
	}

	public void setProductId(Long productId) {
		this.productId = productId;
	}








	

}