Question

I am using JSF2 with Prime faces. I will want to show all the previous links or Urls clicked by user in every page.How can i do this?

Answer 1

Hi I have created this Singleton class to put the Url Browsed by a User.

import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

public class UrlHistory {

    @SuppressWarnings("rawtypes")
    private static Map<String, List> store = new HashMap<String, List>();

    private static UrlHistoryBean instance = null;


    public static UrlHistoryBean getInstance() {
        if (instance == null) {
            instance = new UrlHistoryBean();
        }
        return instance;
    }

    LinkedList<UrlData> urlList = new LinkedList<UrlHistoryBean.UrlData>();

    public void addUrl(String sessionId, String urlString, int urlId) {
        UrlData data = new UrlData();
        data.setUrlName(urlString);
        data.setUrlId(companyId);
        if (urlList.isEmpty()) {
            urlList.add(data);
        } else {
            boolean isEqual = false;
            for (UrlData urlDataObj : urlList) {
                if (urlDataObj.equals(data))
                    isEqual = true;
            }
            if(!isEqual)

                urlList.addFirst(data);
        }
        store.put(sessionId, urlList);

    }

    @SuppressWarnings("rawtypes")
    public static Map<String, List> getStore() {
        return store;
    }

    @SuppressWarnings("rawtypes")
    public static void setStore(Map<String, List> store) {
        UrlHistoryBean.store = store;
    }

    public class UrlData {

        String urlName;
        int urlId;

        public String getUrlName() {
            return UrlName;
        }

        public void setUrlName(String UrlName) {
            this.UrlName = UrlName;
        }

        public int getUrlId() {
            return urlId;
        }

        public void setUrlId(int urlId) {
            this.urlId = urlId;
        }

        public boolean equals(UrlData rData) {
            boolean bEqual = false;
            if (this.getUrlId() > 0 && rData.getUrlId() > 0 && this.getUrlId() == rData.getUrlId()) {
                bEqual = true;
            }
            return bEqual;
        }

    }

}