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tsqlormapperiterator.h
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1#pragma once
2#include <TSqlORMapper>
3
4
5template <class T>
7public:
9 m(&mapper), i(0), n(m->rowCount()) { }
10
11 bool hasNext() const { return i >= 0 && i < m->rowCount(); }
12 bool hasPrevious() const { return i > 0 && i <= m->rowCount(); }
13 T next()
14 {
15 n = i++;
16 return m->value(n);
17 }
19 {
20 n = --i;
21 return m->value(n);
22 }
23 void toBack() { i = n = m->rowCount(); }
24 void toFront()
25 {
26 i = 0;
27 n = m->rowCount();
28 }
29 T value() const { return m->value(n); }
30
31private:
34
35 const TSqlORMapper<T> *m;
36 int i, n;
37};
38
The TSqlORMapperIterator class provides a Java-style iterator for TSqlORMapper.
Definition tsqlormapperiterator.h:6
T next()
Returns the next object and advances the iterator by one position.
Definition tsqlormapperiterator.h:13
T value() const
Returns the current object and does not move the iterator.
Definition tsqlormapperiterator.h:29
TSqlORMapperIterator(const TSqlORMapper< T > &mapper)
Constructor.
Definition tsqlormapperiterator.h:8
bool hasNext() const
Returns true if there is at least one object ahead of the iterator; otherwise returns false.
Definition tsqlormapperiterator.h:11
void toFront()
Moves the iterator to the front of the results (before the first object).
Definition tsqlormapperiterator.h:24
T previous()
Returns the previous object and moves the iterator back by one position.
Definition tsqlormapperiterator.h:18
void toBack()
Moves the iterator to the back of the results (after the last object).
Definition tsqlormapperiterator.h:23
bool hasPrevious() const
Returns true if there is at least one object behind the iterator; otherwise returns false.
Definition tsqlormapperiterator.h:12
The TSqlORMapper class is a template class that provides concise functionality to object-relational m...
Definition tsqlormapper.h:53