Method: hashCode()

1: package de.fhdw.wtf.persistence.meta;
2:
3: /**
4: * A class to represent an adhoc Transaction. An Adhoc Transaction is a Transaction, which is not typed and therefore
5: * part of the Model. It can be used to manipulate the Database.
6: *
7: */
8: public class AdhocTransaction implements Transaction {
9:         
10:         /**
11:          * The Database Id of the Transaction. The Id is unique.
12:          */
13:         private final long id;
14:         
15:         @Override
16:         public long getId() {
17:                 return this.id;
18:         }
19:         
20:         /**
21:          * Constructor for a new Adhoc Transaction. This constructor should not be called by any function different to
22:          * provideAdhocTransaction in the Object Facade or any JUnit Test Case. Because it must be assured that the id also
23:          * exists in the Database.
24:          *
25:          * @param id
26:          * The id of the Adhoc Transaction. The Id is provided by the database.
27:          */
28:         public AdhocTransaction(final long id) {
29:                 super();
30:                 this.id = id;
31:         }
32:         
33:         @Override
34:         public boolean equals(final java.lang.Object obj) {
35:                 if (obj instanceof Transaction) {
36:                         return this.customEquals((Transaction) obj);
37:                 }
38:                 return false;
39:         }
40:         
41:         /**
42:          * Provides true, if two Transaction have the same Id.
43:          *
44:          * @param obj
45:          * Any other Transaction, adhoc or not.
46:          * @return Provides true if two Transactions are the same.
47:          */
48:         private boolean customEquals(final Transaction obj) {
49:                 return this.getId() == obj.getId();
50:         }
51:         
52:         @Override
53:         public int hashCode() {
54:                 return super.hashCode();
55:         }
56:         
57: }