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
129
130
131
132
133
134
135
|
/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
/
/**
* SOURCE: test_iterator.cc
*
* MODULE: rasodmg
*
* COMMENTS:
* None
*/
#include <iostream>
#include "rasodmg/collection.hh"
#include "rasodmg/iterator.hh"
int main()
{
int i,v,x,y,z,status;
i = 0;
v = 100;
x = 200;
y = 300;
z = 400;
status = 5;
cout << endl << endl;
cout << "Iterator Examples" << endl;
cout << "===================" << endl << endl;
cout << "Creating r_Collection of type int." <<endl;
r_Collection<int> a;
cout << "Creating an iterator of an empty collection." <<endl;
r_Iterator<int> iterEmpty = a.create_iterator();
if( iterEmpty.not_done() )
cout << "Iterator says that iteration is not done." << endl << endl;
else
cout << "Iterator says that iteration is done." << endl << endl;
cout << "Now inserting four elements:" << endl << "v = 100" << endl;
a.insert_element(v);
r_Iterator<int> iterTest = a.create_iterator();
if( iterTest.not_done() )
cout << "Iterator says that iteration is not done." << endl << endl;
else
cout << "Iterator says that iteration is done." << endl << endl;
cout << "x = 200" << endl;
a.insert_element(x);
cout << "y = 300" << endl;
a.insert_element(y);
cout << "z = 400" << endl;
a.insert_element(z);
cout << "Cardinality of collection 'a' after four inserts: " << a.cardinality() << endl << endl;
cout << "Now creating an iterator for 'a'." << endl;
// ODMG wants an iterator to be created this way...
r_Iterator<int> iter = a.create_iterator();
// ...but this is an equally valid version that doesn't require
// r_Collection to have a member function create_iterator:
//r_Iterator<int> iter( a );
cout << "Iterator points to element: " << iter.get_element() << endl << endl
<< "Advancing iterator two times." << endl;
iter.advance();
iter.advance();
cout << "Iterator points to element: " << iter.get_element() << endl << endl
<< "Regetting this element and advancing iterator (next function)." << endl;
status = iter.next( i );
cout << "Element is " << i << "." << endl;
cout << "Iterator points to element: " << iter.get_element() << endl << endl
<< "Resetting iterator." << endl;
iter.reset();
cout << "Iterator points to element: " << iter.get_element() << endl << endl;
cout << "Testing prefix and postfix incrementors." << endl;
r_Iterator<int> iter2 = a.create_iterator();
//r_Iterator<int> iter2( a );
iter.reset();
cout << "Postfix incrementor returns: " << iter++.get_element() << endl;
iter.reset();
iter2 = ++iter;
cout << "Prefix incrementor returns: " << iter2.get_element() << endl << endl;
cout << "Resetting both iterators." << endl;
iter.reset();
iter2.reset();
cout << "iter1 == iter2 ? (1=TRUE/0=FALSE) " << iter.is_equal(iter2) << endl;
cout << "iter1 != iter2 ? (1=TRUE/0=FALSE) " << (!iter.is_equal(iter2)) << endl << endl;
cout << "Computing all permutatios of the four numbers:" << endl;
r_Iterator<int> iter3 = a.create_iterator();
//r_Iterator<int> iter3( a );
r_Iterator<int> iter4 = a.create_iterator();
//r_Iterator<int> iter4( a );
for ( ; iter.not_done(); iter++ )
for ( iter2.reset(); iter2.not_done(); iter2++ )
for ( iter3.reset(); iter3.not_done(); iter3++ )
for ( iter4.reset(); iter4.not_done(); iter4++ )
if ( !(iter4.is_equal(iter3) ||
iter4.is_equal(iter2) ||
iter4.is_equal(iter) ||
iter3.is_equal(iter2) ||
iter3.is_equal(iter) ||
iter2.is_equal(iter) ) )
cout << *iter << " " << *iter2 << " " << *iter3 << " " << *iter4 << endl;
}
|
