itembean.java

使用J2EE编写的网上商店系统

/*
 * Created on 1999-5-18
 */
package cmp;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
/**
 * @ejb.bean name="Item"
 *	jndi-name="ItemBean"
 *	type="CMP"
 *  primkey-field="itemID"
 *  schema="mySchema" 
 *  cmp-version="2.x"
 * 
 *--
 * This is needed for JOnAS.
 * If you are not using JOnAS you can safely remove the tags below.
 * @jonas.bean ejb-name="Item"
 *	jndi-name="ItemBean"
 * @jonas.jdbc-mapping  jndi-name="java:/OracleDS" jdbc-table-name="Items" 
 * --
 * 
 *  @ejb.persistence 
 *   table-name="Items" 
 * 
 * @ejb.finder 
 *    query="SELECT OBJECT(a) FROM mySchema as a"  
 *    signature="java.util.Collection findAll()"  
 * 
 * @ejb.finder
 *    query="SELECT OBJECT(b) FROM mySchema b where b.supplierID=?1"
 *    signature="java.util.Collection findBySupplierID(java.lang.String supplierID)"
 * 
 * @ejb.finder
 *    query="SELECT OBJECT(c) FROM mySchema	c where c.quantity=0"
 *    signature="java.util.Collection findByOutOfStock()"
 *--
 * This is needed for JOnAS.
 * If you are not using JOnAS you can safely remove the tags below.
 * @jonas.finder-method-jdbc-mapping  method-name="findAll"
 *	jdbc-where-clause=""
 * @jonas.jdbc-mapping  jndi-name="java:/OracleDS"
 *	jdbc-table-name="Items"
 * 
 *--
 *  
 **/
public abstract class ItemBean implements EntityBean {
	protected EntityContext eContext;
	
	public void setEntityContext(EntityContext context) {
		eContext=context;
	}
	
	public void unsetEntityContext() {
		eContext=null;
	}
	/**
	 * The  ejbCreate method.
	 * 
	 * @ejb.create-method 
	 */
	public java.lang.String ejbCreate(String itemID,String supplierID,String description,
			Integer quantity,Float price) throws javax.ejb.CreateException {
		// EJB 2.0 spec says return null for CMP ejbCreate methods.
		// TODO: YOU MUST INITIALIZE THE FIELDS FOR THE BEAN HERE. 
		// setMyField("Something"); 
		System.out.println("Entering ItemBean,ejbCreate()");
		setItemID(itemID);
		setSupplierID(supplierID);
		setDescription(description);
		setQuantity(quantity);
		setPrice(price);
		System.out.println("Leaving ItemBean.ejbCreate()");
		return null;
	}
	/**
	 * The container invokes this method immediately after it calls ejbCreate.
	 * 
	 */
	public void ejbPostCreate() throws javax.ejb.CreateException {
	}
	/**
	 * Returns the ItemID
	 * @return the ItemID
	 * 
	 * @ejb.persistent-field 
	 * @ejb.persistence
	 *    column-name="ItemID"
	 *     sql-type="varchar2"
	 * @ejb.pk-field 
	 * @ejb.interface-method
	 * 
	 * --
	 * This is needed for JOnAS.
	 * If you are not using JOnAS you can safely remove the tags below.
	 * @jonas.cmp-field-jdbc-mapping  field-name="ItemID"
	 *	jdbc-field-name="ItemID"
	 * 
	 --
	 */
	public abstract java.lang.String getItemID();
	/**
	 * Sets the ItemID
	 * 
	 * @param java.lang.String the new ItemID value
	 * 
	 * @ejb.interface-method
	 */
	public abstract void setItemID(java.lang.String ItemID);
	/**
	 * Returns the SupplierID
	 * @return the SupplierID
	 * 
	 * @ejb.persistent-field 
	 * @ejb.persistence
	 *    column-name="SupplierID"
	 *     sql-type="varchar2"
	 *  
	 * @ejb.interface-method
	 * 
	 * --
	 * This is needed for JOnAS.
	 * If you are not using JOnAS you can safely remove the tags below.
	 * @jonas.cmp-field-jdbc-mapping  field-name="SupplierID"
	 *	jdbc-field-name="SupplierID"
	 * 
	 --
	 */
	public abstract java.lang.String getSupplierID();
	/**
	 * Sets the SupplierID
	 * 
	 * @param java.lang.String the new SupplierID value
	 * 
	 * @ejb.interface-method
	 */
	public abstract void setSupplierID(java.lang.String SupplierID);
	/**
	 * Returns the Description
	 * @return the Description
	 * 
	 * @ejb.persistent-field 
	 * @ejb.persistence
	 *    column-name="Description"
	 *     sql-type="varchar2"
	 *  
	 * @ejb.interface-method
	 * 
	 * --
	 * This is needed for JOnAS.
	 * If you are not using JOnAS you can safely remove the tags below.
	 * @jonas.cmp-field-jdbc-mapping  field-name="Description"
	 *	jdbc-field-name="Description"
	 * 
	 --
	 */
	public abstract java.lang.String getDescription();
	/**
	 * Sets the Description
	 * 
	 * @param java.lang.String the new Description value
	 * 
	 * @ejb.interface-method
	 */
	public abstract void setDescription(java.lang.String Description);
	/**
	 * Returns the Quantity
	 * @return the Quantity
	 * 
	 * @ejb.persistent-field 
	 * @ejb.persistence
	 *    column-name="Quantity"
	 *     sql-type="INTEGER"
	 *  
	 * @ejb.interface-method
	 * 
	 * --
	 * This is needed for JOnAS.
	 * If you are not using JOnAS you can safely remove the tags below.
	 * @jonas.cmp-field-jdbc-mapping  field-name="Quantity"
	 *	jdbc-field-name="Quantity"
	 * 
	 --
	 */
	public abstract java.lang.Integer getQuantity();
	/**
	 * Sets the Quantity
	 * 
	 * @param java.lang.Integer the new Quantity value
	 * 
	 * @ejb.interface-method
	 */
	public abstract void setQuantity(java.lang.Integer Quantity);
	/**
	 * Returns the Price
	 * @return the Price
	 * 
	 * @ejb.persistent-field 
	 * @ejb.persistence
	 *    column-name="Price"
	 *     sql-type="DECIMAL"
	 *  
	 * @ejb.interface-method
	 * 
	 * --
	 * This is needed for JOnAS.
	 * If you are not using JOnAS you can safely remove the tags below.
	 * @jonas.cmp-field-jdbc-mapping  field-name="Price"
	 *	jdbc-field-name="Price"
	 * 
	 --
	 */
	public abstract java.lang.Float getPrice();
	/**
	 * Sets the Price
	 * 
	 * @param java.lang.Float the new Price value
	 * 
	 * @ejb.interface-method
	 */
	public abstract void setPrice(java.lang.Float Price);
/**
 * @ejb.interface-method
 *	view-type="local" 
**/
public ItemData getItemData(){
	System.out.println("Entering ItemBean.getItemData()");
	System.out.println("Leaving ItemBean.getItemData()");
    return new ItemData(getItemID(),getSupplierID(),getDescription(),
    		getQuantity(),getPrice()); 
}

/**
 * @ejb.interface-method
 *	view-type="local" 
**/
public void fillStock (Integer quantity){ 
	System.out.println("Entering ItemBean.fillStock()");
	Integer qty=new Integer(quantity.intValue()+getQuantity().intValue());
	System.out.println("Quantity of items delivery of items"+qty.intValue());
	setQuantity(qty);
	System.out.println("Leaving ItemBean.fillStock()");
}
}