From a6a687c8e47d3527e255ed91de8a3694eb81748d Mon Sep 17 00:00:00 2001
From: vovasty <vovasty@aramzamzam.net>
Date: Wed, 18 Feb 2009 16:53:22 +0300
Subject: [PATCH] commn dao

---
 .../commons/hibernate/dao/GenericDAO.java          | 17 ++++
 .../commons/hibernate/dao/GenericHibernateDAO.java | 92 ++++++++++++++++++++++
 2 files changed, 109 insertions(+)
 create mode 100644 aramzamzam-commons/commons-hibernate/src/main/java/net/aramzamzam/commons/hibernate/dao/GenericDAO.java
 create mode 100644 aramzamzam-commons/commons-hibernate/src/main/java/net/aramzamzam/commons/hibernate/dao/GenericHibernateDAO.java

diff --git a/aramzamzam-commons/commons-hibernate/src/main/java/net/aramzamzam/commons/hibernate/dao/GenericDAO.java b/aramzamzam-commons/commons-hibernate/src/main/java/net/aramzamzam/commons/hibernate/dao/GenericDAO.java
new file mode 100644
index 0000000..ef7fadb
--- /dev/null
+++ b/aramzamzam-commons/commons-hibernate/src/main/java/net/aramzamzam/commons/hibernate/dao/GenericDAO.java
@@ -0,0 +1,17 @@
+package ru.rentdom.dao;
+
+import java.io.Serializable;
+import java.util.List;
+/** DAO pattern from "Generic Data Access Objects": http://www.hibernate.org/328.html*/
+public interface GenericDAO<T, ID extends Serializable> {
+
+    T findById(ID id);
+
+    List<T> findAll();
+
+    List<T> findByExample(T exampleInstance);
+
+    T makePersistent(T entity);
+
+    void makeTransient(T entity);
+}
diff --git a/aramzamzam-commons/commons-hibernate/src/main/java/net/aramzamzam/commons/hibernate/dao/GenericHibernateDAO.java b/aramzamzam-commons/commons-hibernate/src/main/java/net/aramzamzam/commons/hibernate/dao/GenericHibernateDAO.java
new file mode 100644
index 0000000..dc20b00
--- /dev/null
+++ b/aramzamzam-commons/commons-hibernate/src/main/java/net/aramzamzam/commons/hibernate/dao/GenericHibernateDAO.java
@@ -0,0 +1,92 @@
+package ru.rentdom.dao;
+
+import java.io.Serializable;
+import java.lang.reflect.ParameterizedType;
+import java.util.List;
+
+import org.apache.tapestry5.hibernate.HibernateSessionManager;
+import org.hibernate.Criteria;
+import org.hibernate.Session;
+import org.hibernate.criterion.Criterion;
+import org.hibernate.criterion.Example;
+
+/** DAO pattern from "Generic Data Access Objects": http://www.hibernate.org/328.html*/
+public class GenericHibernateDAO<T, ID extends Serializable>
+		implements GenericDAO<T, ID> {
+
+	private Class<T> persistentClass;
+	private final HibernateSessionManager sessionManager;
+
+	@SuppressWarnings("unchecked")
+	public GenericHibernateDAO(HibernateSessionManager sessionManager){
+		this.persistentClass = (Class<T>) ((ParameterizedType) getClass()
+				.getGenericSuperclass()).getActualTypeArguments()[0];
+		this.sessionManager = sessionManager;
+	}
+	
+	protected Session getSession() {
+		return sessionManager.getSession();
+	}
+
+	public Class<T> getPersistentClass() {
+		return persistentClass;
+	}
+
+	public List<T> findAll() {
+		return findByCriteria();
+	}
+
+	@SuppressWarnings("unchecked")
+	public <X extends T> List<X> findByExample(X exampleInstance, String... excludeProperty) {
+		Criteria crit = getSession().createCriteria(exampleInstance.getClass());
+		Example example = Example.create(exampleInstance);
+		for (String exclude : excludeProperty) {
+			example.excludeProperty(exclude);
+		}
+		crit.add(example);
+		return crit.list();
+	}
+
+	public List<T> findByExample(T exampleInstance) {
+		return findByExample(exampleInstance,new String[0]);
+	}
+	
+	public T makePersistent(T entity) {
+		getSession().saveOrUpdate(entity);
+		return entity;
+	}
+
+	public void makeTransient(T entity) {
+		getSession().delete(entity);
+	}
+
+	public void flush() {
+		getSession().flush();
+	}
+
+	public void clear() {
+		getSession().clear();
+	}
+
+	/**
+	 * Use this inside subclasses as a convenience method.
+	 */
+	@SuppressWarnings("unchecked")
+	protected List<T> findByCriteria(Criterion... criterion) {
+		Criteria crit = getSession().createCriteria(getPersistentClass());
+		for (Criterion c : criterion) {
+			crit.add(c);
+		}
+		return crit.list();
+	}
+	
+	/**
+	 * Возвращает null, если entity не была найдена
+	 * @param id
+	 * @return
+	 */
+	@SuppressWarnings("unchecked")
+	public T findById(ID id) {
+		return (T) getSession().get(getPersistentClass(), id);
+	}
+}
-- 
2.11.4.GIT