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1   package ejava.jpa.examples.cache;
2   
3   import javax.persistence.*;
4   
5   @Entity
6   @Table(name="JPACACHE_ZIPADDR")
7   @Cacheable(true)
8   public class ZipAddress {
9   	@Id
10  	@Column(length=10)
11  	private String zip;
12  	@Column(length=32, nullable=false)
13  	private String city;
14  	
15  	protected ZipAddress() {}
16  	public ZipAddress(String zip, String city) {
17  		this.zip=zip;
18  		this.city=city;
19  	}
20  	
21  	public ZipAddress(String zip) {
22  		this.zip=zip;
23  	}
24  	public String getZip() { return zip; }
25  	public String getCity() { return city; }
26  	
27  	@Override
28  	public String toString() {
29  		return zip + "=" + city;
30  	}
31  	
32  	@Override
33  	public int hashCode() {
34  		return zip==null? 0 : zip.hashCode();
35  	}
36  	
37  	@Override
38  	public boolean equals(Object obj) {
39  		if (obj==null) { return false; }
40  		if (obj==this) { return true; }
41  		if (!(obj instanceof ZipAddress)) { return false; }
42  		ZipAddress rhs = (ZipAddress) obj;
43  		return zip==null ? rhs.zip==null : zip.equals(rhs.zip);
44  	}
45  }