net.anthonychaves.bookmarks.service.BookmarkService.java Source code

Introduction

Here is the source code for net.anthonychaves.bookmarks.service.BookmarkService.java

Source

/**
  Copyright 2010 Anthony Chaves
      
  This file is part of Bookmarks.
    
  Bookmarks is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
    
  Bookmarks is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
    
  You should have received a copy of the GNU General Public License
  along with Bookmarks.  If not, see <http://www.gnu.org/licenses/>.
*/

package net.anthonychaves.bookmarks.service;

import org.springframework.stereotype.*;

import javax.persistence.*;

import net.anthonychaves.bookmarks.models.*;

import org.htmlcleaner.*;

import java.util.*;

@Service
public class BookmarkService {

    @PersistenceUnit(unitName = "bookmarksPU")
    EntityManagerFactory emf;

    public Bookmark makeBookmark(TagNode node) {
        Bookmark bookmark = new Bookmark();
        bookmark.setTitle(node.getText().toString());
        bookmark.setUrl(node.getAttributeByName("href"));

        return bookmark;
    }

    public Object[] updateTags(User user, int id, String tags) {
        String cleanTags = cleanTags(tags);

        EntityManager em = emf.createEntityManager();

        em.getTransaction().begin();
        User u = em.find(User.class, user.getId());
        Bookmark b = em.find(Bookmark.class, id);
        if (b.getUser().getId() != u.getId()) {
            throw new RuntimeException("Please don't try to delete bookmarks that aren't yours.");
        }

        String originalTags = b.getTags();
        b.setTags(cleanTags);
        em.getTransaction().commit();

        List<String> diffTags = diffTags(originalTags, cleanTags);

        return new Object[] { u, b, diffTags };
    }

    private String cleanTags(String tags) {
        Set<String> tagSet = new HashSet<String>(new ArrayList<String>(Arrays.asList(tags.split("\\W"))));
        StringBuilder cleanTags = new StringBuilder();

        for (String t : tagSet) {
            cleanTags.append(t + ",");
            System.out.println("tags: " + cleanTags.toString());
        }
        return cleanTags.toString();
    }

    private List<String> diffTags(String originalTags, String newTags) {
        List<String> original = new ArrayList<String>(Arrays.asList(originalTags.split("\\W")));
        List<String> newT = new ArrayList<String>(Arrays.asList(newTags.split("\\W")));
        original.removeAll(newT);

        return original;
    }
}