ssh_training_itemmgr 04

DataDict.java

package com.bjsxt.drp.business.itemmgr.model;

public class DataDict {

	private String id;
	
	private String name;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

}

DataDict.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
	"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.bjsxt.drp.business.itemmgr.model">
	<class name="DataDict" table="t_data_dict">
		<id name="id">
			<generator class="assigned"/>
		</id>
		<discriminator column="category" type="string"/>
		<property name="name" not-null="true"/>
		<subclass name="ItemCategory" discriminator-value="item_category"/>
		<subclass name="ItemUnit" discriminator-value="item_unit"/>
	</class>
</hibernate-mapping>

Item.java

package com.bjsxt.drp.business.itemmgr.model;

/**
 * 物料实体类
 * @author Administrator
 *
 */
public class Item {
	
    //物料代码
	private String itemNo;
	
	//物料名称
	private String itemName;
	
	//规格
	private String spec;
	
	//型号
	private String pattern;
	
	//类型
	private ItemCategory category;
	
	//单位
	private ItemUnit unit;

	public ItemCategory getCategory() {
		return category;
	}

	public void setCategory(ItemCategory category) {
		this.category = category;
	}

	public String getItemName() {
		return itemName;
	}

	public void setItemName(String itemName) {
		this.itemName = itemName;
	}

	public String getItemNo() {
		return itemNo;
	}

	public void setItemNo(String itemNo) {
		this.itemNo = itemNo;
	}

	public String getPattern() {
		return pattern;
	}

	public void setPattern(String pattern) {
		this.pattern = pattern;
	}

	public String getSpec() {
		return spec;
	}

	public void setSpec(String spec) {
		this.spec = spec;
	}

	public ItemUnit getUnit() {
		return unit;
	}

	public void setUnit(ItemUnit unit) {
		this.unit = unit;
	}
}

ItemCategory.java

package com.bjsxt.drp.business.itemmgr.model;

/**
 * 物料类别
 * @author Administrator
 *
 */
public class ItemCategory extends DataDict {
}

ItemUnit.java

package com.bjsxt.drp.business.itemmgr.model;

/**
 * 计量单位类
 * @author Administrator
 *
 */
public class ItemUnit extends DataDict {
	
}

Item.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
	"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.bjsxt.drp.business.itemmgr.model">
	<class name="Item" table="t_items">
		<id name="itemNo">
			<generator class="assigned"/>
		</id>
		<property name="itemName" not-null="true"/>
		<property name="spec"/>
		<property name="pattern"/>
		<many-to-one name="category"/>
		<many-to-one name="unit"/>
	</class>
</hibernate-mapping>

ItemManager.java

package com.bjsxt.drp.business.itemmgr.manager;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.bjsxt.drp.business.itemmgr.model.Item;
import com.bjsxt.drp.business.util.AppException;
import com.bjsxt.drp.business.util.HibernateUtils;
import com.bjsxt.drp.business.util.PageModel;

/**
 * 物料管理类，采用单例模式实现
 * @author Administrator
 *
 */
public interface ItemManager {

	/**
	 * 添加物料
	 * @param item item对象
	 */
	public void addItem(Item item);

	/**
	 * 修改物料
	 * @param item item对象
	 */
	public void modifyItem(Item item);

	/**
	 * 删除物料
	 * @param itemNoList 物料代码集合
	 */
	public void deleteItem(String[] itemNoList);

	/**
	 * 根据条件查询物料信息
	 * @param queryStr 查询条件
	 * @return item对象的集合
	 */
	public PageModel findAllItem(int pageNo, int pageSize, String queryStr);
	
	/**
	 * 根据Id查询物料
	 * @param item item对象
	 */
	public Item findItemById(String itemNo);
}

package com.bjsxt.drp.business.itemmgr.manager;

import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.bjsxt.drp.business.itemmgr.model.Item;
import com.bjsxt.drp.business.util.AppException;
import com.bjsxt.drp.business.util.PageModel;

/**
 * 物料管理类，采用单例模式实现
 * @author Administrator
 *
 */
public class ItemManagerImpl extends HibernateDaoSupport implements ItemManager {

	/**
	 * 添加物料
	 * @param item item对象
	 */
	public void addItem(Item item) {
		try {
			this.getHibernateTemplate().save(item);
		}catch(Exception e) {
			//记录日志,log4j等......
			e.printStackTrace();
			throw new AppException("drp.basedata.item.error.add"); 
		}
	}

	/**
	 * 修改物料
	 * @param item item对象
	 */
	public void modifyItem(Item item) {
		try {
			this.getHibernateTemplate().update(item);
		}catch(Exception e) {
			//记录日志,log4j等......
			e.printStackTrace();
			throw new AppException("drp.database.item.error.modify", item.getItemNo());
		}
	}

	/**
	 * 删除物料
	 * @param itemNoList 物料代码集合
	 */
	public void deleteItem(String[] itemNoList) {
		try {
			for (int i=0; i<itemNoList.length; i++) {
				Item item = (Item)this.getHibernateTemplate().load(Item.class, itemNoList[i]);
				this.getHibernateTemplate().delete(item);
			}
		}catch(Exception e) {
			//记录日志,log4j等......
			e.printStackTrace();
			throw new AppException("drp.basedata.item.error.delete");
		}		
	}

	/**
	 * 根据条件查询物料信息
	 * @param queryStr 查询条件
	 * @return item对象的集合
	 */
	public PageModel findAllItem(final int pageNo, final int pageSize, final String queryStr) {
		PageModel pageModel = null;
		List itemList = new ArrayList();
		try {
			if (queryStr != null && queryStr.trim().length() != 0) {
				itemList = this.getHibernateTemplate().executeFind(new HibernateCallback() {

					public Object doInHibernate(Session session)
							throws HibernateException, SQLException {
						return session.createQuery("from Item a where a.itemNo like ? or a.itemName like ? order by a.itemNo")
										.setParameter(0, queryStr + "%")
										.setParameter(1, queryStr + "%")
										.setFirstResult((pageNo - 1) * pageSize)
										.setMaxResults(pageSize)
										.list();
					}
				});
			}else {
				itemList = this.getHibernateTemplate().executeFind(new HibernateCallback() {

					public Object doInHibernate(Session session)
							throws HibernateException, SQLException {
						return session.createQuery("select a from Item a join fetch a.category b join fetch a.unit c order by a.itemNo")
						.setFirstResult((pageNo - 1) * pageSize)
						.setMaxResults(pageSize)
						.list();
					}
				});
			}
			
			pageModel = new PageModel();
			pageModel.setPageNo(pageNo);
			pageModel.setPageSize(pageSize);
			pageModel.setList(itemList);
			pageModel.setTotalRecords(getTotalRecords(queryStr));
		}catch(Exception e) {
			//记录日志,log4j等......
			e.printStackTrace();
			throw new AppException("drp.database.item.error.findallitem");
		}	
		return pageModel;

	}
	
	/**
	 * 查询记录数
	 * 
	 * @param session
	 * @param queryStr
	 * @return
	 */
	private int getTotalRecords(String queryStr) {
		Long totalRecords = 0L;
		if (queryStr != null && queryStr.trim().length() != 0) {
			//采用模板取得总记录数据
			totalRecords = (Long)this.getHibernateTemplate().find("select count(*) from Item a where a.itemNo like ? or a.itemName like ?", 
											 new Object[]{queryStr + "%", queryStr + "%"}).get(0);
		}else {
			//采用session取得总记录数
			totalRecords = (Long)this.getSession().createQuery("select count(*) from Item a").uniqueResult();
		}
		return totalRecords.intValue();
	}
	
	/**
	 * 根据Id查询物料
	 * @param item item对象
	 */
	public Item findItemById(String itemNo) {
		Item item = null;
		try {
			item = (Item)this.getHibernateTemplate().load(Item.class, itemNo);
		}catch(Exception e) {
			//记录日志,log4j等......
			e.printStackTrace();
			throw new AppException("drp.basedata.item.error.delete");
		}	
		return item;
	}
}