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00026 #ifndef XAPIAN_INCLUDED_POSTINGITERATOR_H
00027 #define XAPIAN_INCLUDED_POSTINGITERATOR_H
00028
00029 #include <iterator>
00030 #include <string>
00031
00032 #include <xapian/base.h>
00033 #include <xapian/types.h>
00034
00035 namespace Xapian {
00036
00037 class Database;
00038 class PositionIterator;
00039
00040 class PostingIterator {
00041 public:
00042 class Internal;
00044 Xapian::Internal::RefCntPtr<Internal> internal;
00045
00046 private:
00047 friend class Database;
00048
00049 PostingIterator(Internal *internal_);
00050
00051 public:
00052 friend bool operator==(const PostingIterator &a,
00053 const PostingIterator &b);
00054
00056
00057
00059 ~PostingIterator();
00060
00064 PostingIterator(const PostingIterator &other);
00065
00069 void operator=(const PostingIterator &other);
00070
00071 PostingIterator & operator++();
00072
00073 void operator++(int);
00074
00075
00076 void skip_to(Xapian::docid did);
00077
00078
00079
00080
00081
00083 Xapian::docid operator *() const;
00084
00094 Xapian::doclength get_doclength() const;
00095
00099 Xapian::termcount get_wdf() const;
00100
00101
00102 PositionIterator positionlist_begin();
00103 PositionIterator positionlist_end();
00104
00105
00106
00107
00108
00109
00113 std::string get_description() const;
00114
00116
00117 typedef std::input_iterator_tag iterator_category;
00118 typedef Xapian::docid value_type;
00119 typedef Xapian::doccount_diff difference_type;
00120 typedef Xapian::docid * pointer;
00121 typedef Xapian::docid & reference;
00123 };
00124
00126 inline bool operator==(const PostingIterator &a, const PostingIterator &b)
00127 {
00128 return (a.internal.get() == b.internal.get());
00129 }
00130
00132 inline bool operator!=(const PostingIterator &a, const PostingIterator &b)
00133 {
00134 return !(a == b);
00135 }
00136
00137 }
00138
00139 #endif