diff options
Diffstat (limited to '3rdparty/clucene/src/CLucene/search/DateFilter.cpp')
-rw-r--r-- | 3rdparty/clucene/src/CLucene/search/DateFilter.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/3rdparty/clucene/src/CLucene/search/DateFilter.cpp b/3rdparty/clucene/src/CLucene/search/DateFilter.cpp new file mode 100644 index 000000000..925858204 --- /dev/null +++ b/3rdparty/clucene/src/CLucene/search/DateFilter.cpp @@ -0,0 +1,93 @@ +/*------------------------------------------------------------------------------ +* 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 "DateFilter.h" + +CL_NS_USE(index) +CL_NS_USE(util) +CL_NS_USE(document) +CL_NS_DEF(search) + + DateFilter::~DateFilter(){ + _CLDECDELETE( start ); + _CLDECDELETE( end ); + } + + DateFilter::DateFilter(const DateFilter& copy): + start( _CL_POINTER(copy.start) ), + end ( _CL_POINTER(copy.end) ) + { + } + + /** Constructs a filter for field <code>f</code> matching times between + <code>from</code> and <code>to</code>. */ + DateFilter::DateFilter(const TCHAR* f, int64_t from, int64_t to) + { + TCHAR* tmp = DateField::timeToString(from); + start = _CLNEW Term(f, tmp); + _CLDELETE_CARRAY(tmp); + + tmp = DateField::timeToString(to); + end = _CLNEW Term(start, tmp); + _CLDELETE_CARRAY(tmp); + } + + /** Constructs a filter for field <code>f</code> matching times before + <code>time</code>. */ + DateFilter* DateFilter::Before(const TCHAR* field, int64_t time) { + return _CLNEW DateFilter(field, 0,time); + } + + /** Constructs a filter for field <code>f</code> matching times after + <code>time</code>. */ + DateFilter* DateFilter::After(const TCHAR* field, int64_t time) { + return _CLNEW DateFilter(field,time, DATEFIELD_DATE_MAX ); + } + + /** Returns a BitSet with true for documents which should be permitted in + search results, and false for those that should not. */ + BitSet* DateFilter::bits(IndexReader* reader) { + BitSet* bts = _CLNEW BitSet(reader->maxDoc()); + + TermEnum* enumerator = reader->terms(start); + if (enumerator->term(false) == NULL){ + _CLDELETE(enumerator); + return bts; + } + TermDocs* termDocs = reader->termDocs(); + + try { + while (enumerator->term(false)->compareTo(end) <= 0) { + termDocs->seek(enumerator->term(false)); + while (termDocs->next()) { + bts->set(termDocs->doc()); + } + if (!enumerator->next()) { + break; + } + } + } _CLFINALLY ( + termDocs->close(); + _CLDELETE(termDocs); + enumerator->close(); + _CLDELETE(enumerator); + ); + return bts; + } + + Filter* DateFilter::clone() const{ + return _CLNEW DateFilter(*this); + } + + TCHAR* DateFilter::toString(){ + size_t len = _tcslen(start->field()) + start->textLength() + end->textLength() + 8; + TCHAR* ret = _CL_NEWARRAY(TCHAR,len); + ret[0]=0; + _sntprintf(ret,len,_T("%s: [%s-%s]"), start->field(),start->text(),end->text()); + return ret; + } +CL_NS_END |