package com.neidetcher.petunia.service;

 import java.util.List;

 public interface KnowledgeDao

 {

    public Knowledge save(Knowledge knowledge);

    public Knowledge find(Integer id);

    public List<Knowledge> findByTagName(String tagName);

    public List<Knowledge> findByCategoryId(Integer knowledgeId);

    public List<String> findTags(Integer knowledgeId);

    public void addTag(Integer knowledgeId, String tagName);

    public void removeTag(Integer knowledgeId, String tagName);

 }