dictionarydaoimpl.java

jsf在线考试系统的实例

package com.jlobo.data.impl;

import java.util.List;

import org.hibernate.Transaction;

import com.jlobo.data.DaoSupport;
import com.jlobo.data.IDictionaryDao;
import com.jlobo.web.beans.Dictionary;
import com.jlobo.web.beans.QuestionType;
import com.jlobo.web.beans.Subject;


public class DictionaryDaoImpl extends DaoSupport implements IDictionaryDao {

	public boolean deleteDictionary(Dictionary dictionary) {
		Transaction tx = this.session.beginTransaction();
		tx.begin();
		this.session.delete(dictionary);
		tx.commit();
		this.session.close();
		return true;
	}

	public Dictionary getDictionary(Long did) {
		Transaction tx = this.session.beginTransaction();
		tx.begin();
		Dictionary dictionary = (Dictionary)this.session.get(Dictionary.class, did);
		tx.commit();
		this.session.close();
		return dictionary;
	}

	public List getDictionarys(Long did) {
		String hql = "FROM Dictionary WHERE parent.id = "+did;
		Transaction tx = this.session.beginTransaction();
		tx.begin();
		List lt = this.session.createQuery(hql).list();
		tx.commit();
		this.session.close();
		return lt;
	}

	public boolean updateDictionary(Dictionary dictionary) {
		Transaction tx = this.session.beginTransaction();
		tx.begin();
		this.session.saveOrUpdate(dictionary);
		tx.commit();
		this.session.close();
		return true;
	}

	public Subject getSubject(Long sid) {
		return (Subject)this.session.get(Subject.class, sid);
	}

	public List getSubjects(Long sid) {
		String hql = "FROM Subject WHERE parent.id = " + sid;
		List lt = this.session.createQuery(hql).list();
		return lt;
	}
	
	public boolean deleteSubject(Subject subject) {
		this.session.delete(subject);
		return true;
	}
	
	public boolean updateSubject(Subject subject) {
		this.session.saveOrUpdate(subject);
		return true;
	}
	

	public QuestionType getType(Long tid) {
		return (QuestionType)this.session.get(QuestionType.class, tid);
	}

	public List getTypes(Long tid) {
		String hql = "FROM QuestionType WHERE parent.id = " + tid;
		List lt = this.session.createQuery(hql).list();
		return lt;
	}	
	
	public boolean deleteType(QuestionType type) {
		this.session.delete(type);
		return false;
	}

	public boolean updateType(QuestionType type) {
		this.session.saveOrUpdate(type);
		return true;
	}
}