companybean.java

关于的ｊａｖａ的多媒体课件

package com.mydomain.ejb;

import javax.ejb.*;
import java.util.Set;
import com.mydomain.dvc.*;

public abstract class CompanyBean implements EntityBean {
	private EntityContext ctx;
	
	public String ejbCreate(String name, Location location) throws CreateException {
		System.out.println("Creating Company " + name);
		setName(name);
		setLocation(location);
		return null;
	}
	
	public void ejbPostCreate(String name, Location location) {}
	
	public String ejbCreate(String name, Location location, Set emps) throws CreateException {
		System.out.println("Creating Company " + name);
		setName(name);
		setLocation(location);
		return null;
	}
	
	public void ejbPostCreate(String name, Location location, Set emps) {
		setEmployees(emps);
	}
	
	// CMP field accessors -----------------------------------------------------
	public abstract String getName();
	
	public abstract void setName(String name);
	
	public abstract Location getLocation();
	
	public abstract void setLocation(Location location);
	
	//abstract accessors for cmr-field(s)
	public abstract Set getEmployees();
	
	public abstract void setEmployees(Set emps);
	
	// EJB callbacks -----------------------------------------------------------
	public void setEntityContext(EntityContext context) {
		ctx = context;
	}
	
	public void unsetEntityContext() {
		ctx = null;
	}
	
	public void ejbActivate() { }
	
	public void ejbPassivate() { }
	
	public void ejbRemove() { System.out.println("Removing " + getName()); }
	
	public void ejbStore() { }
	
	public void ejbLoad() {}
}