blob: e481838e959763b16e2f5c55fcd10004756568b8 (
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
|
/*------------------------------------------------------------------------------
* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
*
* Distributable under the terms of either the Apache License (Version 2.0) or
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#include "CLucene/StdHeader.h"
#include "SegmentHeader.h"
#include "Terms.h"
CL_NS_USE(util)
CL_NS_DEF(index)
SegmentTermPositions::SegmentTermPositions(const SegmentReader* _parent):
SegmentTermDocs(_parent){
//Func - Constructor
//Pre - Parent != NULL
//Post - The instance has been created
CND_PRECONDITION(_parent != NULL, "Parent is NULL");
proxStream = _parent->proxStream->clone();
CND_CONDITION(proxStream != NULL,"proxStream is NULL");
position = 0;
proxCount = 0;
}
SegmentTermPositions::~SegmentTermPositions() {
//Func - Destructor
//Pre - true
//Post - The intance has been closed
close();
}
TermDocs* SegmentTermPositions::__asTermDocs(){
return (TermDocs*) this;
}
TermPositions* SegmentTermPositions::__asTermPositions(){
return (TermPositions*) this;
}
void SegmentTermPositions::seek(const TermInfo* ti) {
SegmentTermDocs::seek(ti);
if (ti != NULL)
proxStream->seek(ti->proxPointer);
proxCount = 0;
}
void SegmentTermPositions::close() {
//Func - Frees the resources
//Pre - true
//Post - The resources have been freed
SegmentTermDocs::close();
//Check if proxStream still exists
if(proxStream){
proxStream->close();
_CLDELETE( proxStream );
}
}
int32_t SegmentTermPositions::nextPosition() {
/* DSR:CL_BUG: Should raise exception if proxCount == 0 at the
** beginning of this method, as in
** if (--proxCount == 0) throw ...;
** The JavaDocs for TermPositions.nextPosition declare this constraint,
** but CLucene doesn't enforce it. */
proxCount--;
return position += proxStream->readVInt();
}
bool SegmentTermPositions::next() {
for (int32_t f = proxCount; f > 0; f--) // skip unread positions
proxStream->readVInt();
if (SegmentTermDocs::next()) { // run super
proxCount = _freq; // note frequency
position = 0; // reset position
return true;
}
return false;
}
int32_t SegmentTermPositions::read(int32_t* docs, int32_t* freqs, int32_t length) {
_CLTHROWA(CL_ERR_InvalidState,"TermPositions does not support processing multiple documents in one call. Use TermDocs instead.");
}
void SegmentTermPositions::skippingDoc() {
for (int32_t f = _freq; f > 0; f--) // skip all positions
proxStream->readVInt();
}
void SegmentTermPositions::skipProx(int64_t proxPointer){
proxStream->seek(proxPointer);
proxCount = 0;
}
CL_NS_END
|
