blob: 085fca33ab8a55958557854ef11ceca978bf00d8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
// **********************************************************************
//
// Copyright (c) 2002
// ZeroC, Inc.
// Billerica, MA, USA
//
// All Rights Reserved.
//
// Ice is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License version 2 as published by
// the Free Software Foundation.
//
// **********************************************************************
class BookI extends Book
{
//
// No read/write mutexes in Java - hence use native
// synchronization.
//
synchronized public BookDescription
getBookDescription(Ice.Current current)
{
if(_destroyed)
{
throw new Ice.ObjectNotExistException();
}
//
// Immutable.
//
return description;
}
synchronized public String
getRenterName(Ice.Current current)
throws BookNotRentedException
{
if(_destroyed)
{
throw new Ice.ObjectNotExistException();
}
if(rentalCustomerName.length() == 0)
{
throw new BookNotRentedException();
}
return rentalCustomerName;
}
synchronized public void
rentBook(String name, Ice.Current current)
throws BookRentedException
{
if(_destroyed)
{
throw new Ice.ObjectNotExistException();
}
if(rentalCustomerName.length() != 0)
{
throw new BookRentedException();
}
rentalCustomerName = name;
}
synchronized public void
returnBook(Ice.Current current)
throws BookNotRentedException
{
if(_destroyed)
{
throw new Ice.ObjectNotExistException();
}
if(rentalCustomerName.length() == 0)
{
throw new BookNotRentedException();
}
rentalCustomerName = new String();;
}
synchronized public void
destroy(Ice.Current current)
throws DatabaseException
{
if(_destroyed)
{
throw new Ice.ObjectNotExistException();
}
_destroyed = true;
try
{
_library.remove(description);
}
catch(Freeze.DBNotFoundException ex)
{
//
// Raised by remove. Ignore.
//
}
catch(Freeze.DBException ex)
{
DatabaseException e = new DatabaseException();
e.message = ex.message;
throw e;
}
}
BookI(LibraryI library)
{
_library = library;
_destroyed = false;
//
// This could be avoided by having two constructors (one for
// new creation of a book, and the other for restoring a
// previously saved book).
//
rentalCustomerName = new String();
}
private LibraryI _library;
private boolean _destroyed;
}
|
