author | hgs |
Mon, 09 Aug 2010 10:51:30 +0530 | |
changeset 14 | 8bd192d47aaa |
parent 0 | 671dee74050a |
child 23 | d4d56f5e7c55 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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|
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|
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#include "cpixhits.h" |
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#include "idxdb.h" |
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#include "cpixexc.h" |
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#include "iqrytype.h" |
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#include "document.h" |
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#include "common/cpixlog.h" |
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namespace Cpix |
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{ |
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/** |
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* Interface IHits |
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*/ |
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IHits::~IHits() |
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{ |
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; |
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} |
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void HitsBase::destroyWrappers(int32_t index) |
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{ |
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WrapperMap::iterator |
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i = wrappers_.begin(); |
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if (index == -1) { |
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for (; i != wrappers_.end(); ++i) |
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{ |
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delete i->second; |
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wrappers_.clear(); |
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} |
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} else { |
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for (; i != wrappers_.find(index); ++i) |
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{ |
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delete i->second; |
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} |
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wrappers_.erase(wrappers_.begin(),wrappers_.find(index)); |
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} |
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14 | 59 |
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} |
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HitsBase::HitsBase(bool docsOwnedByClucene) |
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: docsOwnedByClucene_(docsOwnedByClucene) |
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{ |
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; |
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} |
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void HitsBase::wrapDocument(int32_t index, |
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lucene::document::Document * doc) |
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{ |
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// if (wrappers_.find(index) != wrappers_.end()) |
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// { |
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// delete wrappers_[index]; |
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// wrappers_[index] = NULL; |
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// } |
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// |
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// Cpix::Document |
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// * cpixDoc = new Cpix::Document(doc, |
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// docsOwnedByClucene_); |
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// wrappers_[index] = cpixDoc; |
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if (wrappers_.find(index) == wrappers_.end()) |
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{ |
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Cpix::Document |
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* cpixDoc = new Cpix::Document(doc, |
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docsOwnedByClucene_); |
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wrappers_[index] = cpixDoc; |
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} |
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14 | 92 |
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} |
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Cpix::Document * HitsBase::getDocument(int32_t index) |
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{ |
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Cpix::Document |
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* rv = NULL; |
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if (wrappers_.find(index) == wrappers_.end()) |
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{ |
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getDocument_(index); |
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} |
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rv = wrappers_[index]; |
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return rv; |
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} |
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14 | 111 |
int HitsBase::resetDocumentCache(int32_t index, int32_t count) |
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{ |
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int32_t reqCount = index + count; |
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int rv = 0; |
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int i = (wrappers_.begin()->first)+ (int32_t) wrappers_.size(); |
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if ((i < reqCount) || (index < wrappers_.begin()->first)) |
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{ |
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getDocument_(index); |
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||
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} |
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rv = (int32_t) wrappers_.size(); |
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return rv; |
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} |
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/** |
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* Class ClhDocumentConsumer |
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*/ |
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int32_t ClhDocumentConsumer::beginIndex() const |
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{ |
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return beginIndex_; |
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} |
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int32_t ClhDocumentConsumer::endIndex() const |
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{ |
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return endIndex_; |
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} |
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void ClhDocumentConsumer::useDocument(int32_t index, |
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lucene::document::Document * document) |
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{ |
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clHits_.wrapDocument(index, |
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document); |
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} |
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146 |
|
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147 |
|
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void ClhDocumentConsumer::failedDocument(int32_t index, |
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int clErrorNumber) |
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{ |
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failedDocErrors_[index - beginIndex_] = clErrorNumber; |
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} |
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153 |
|
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154 |
|
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ClhDocumentConsumer::ClhDocumentConsumer(LuceneHits & clHits) |
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: pageSize_(IdxDbMgr::instance()->getClHitsPageSize()), |
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beginIndex_(UNUSED), |
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endIndex_(UNUSED), |
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clHits_(clHits) |
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160 |
{ |
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failedDocErrors_.reserve(pageSize_); |
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for (int i = 0; i < pageSize_; ++i) |
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163 |
{ |
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failedDocErrors_.push_back(CL_ERR_UNKNOWN); |
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} |
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} |
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167 |
|
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168 |
|
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void ClhDocumentConsumer::setPageBoundaryForIndex(int32_t index) |
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170 |
{ |
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if (index >= clHits_.length()) |
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172 |
{ |
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THROW_CPIXEXC("Not a valid hit doc: %d (hits length is %d)", |
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index, |
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clHits_.length()); |
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} |
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177 |
|
14 | 178 |
//beginIndex_ = index - (index % pageSize_); |
179 |
beginIndex_ = index; |
|
0
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endIndex_ = beginIndex_ + pageSize_; |
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181 |
|
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endIndex_ = std::min(clHits_.length(), |
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endIndex_); |
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184 |
|
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for (int i = 0; i < pageSize_; ++i) |
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186 |
{ |
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failedDocErrors_[i] = CL_ERR_UNKNOWN; |
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} |
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189 |
} |
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190 |
|
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191 |
|
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void ClhDocumentConsumer::throwIfFailedDocIndex(int32_t index) |
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193 |
{ |
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if (beginIndex_ == UNUSED) |
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195 |
{ |
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// nothing has been fetched with this instance, so |
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// nothing has failed yet |
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return; |
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} |
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200 |
|
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if (index < beginIndex_ || index >= endIndex_) |
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{ |
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// we have not tried to load this document in this |
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// batch |
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return; |
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} |
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207 |
|
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int32_t |
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idx = index - beginIndex_; |
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210 |
|
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if (failedDocErrors_[idx] != CL_ERR_Success) |
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{ |
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THROW_CPIXEXC("Failed to fetch hit document %d, CL error code: %d (cf. clucene debug/error.h)", |
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index, |
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failedDocErrors_[idx]); |
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} |
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else |
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{ |
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THROW_CPIXEXC(PL_ERROR "Reloading a document should not be necessary %d", |
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index); |
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} |
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} |
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223 |
|
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|
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225 |
|
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|
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|
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/** |
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* Class LuceneHits wrapping lucene::document::Hits |
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*/ |
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LuceneHits::LuceneHits(lucene::search::Hits * hits, |
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lucene::search::Query * query, |
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IdxDbHndl idxDb, |
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Version idxDbVersion) |
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: HitsBase(true), // docs in here are owned by clucene |
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hits_(hits), |
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length_(hits != NULL ? hits->length() : 0), |
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query_(query), // increase reference count |
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idxDb_(idxDb), |
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idxDbVersion_(idxDbVersion), |
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docConsumer_(NULL) |
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{ |
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docConsumer_ = new ClhDocumentConsumer(*this); |
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244 |
|
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IdxDbMgr::instance()->incRefHndl(idxDb_); |
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|
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// pre-fetching the first page - assumption is that first |
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// document to get will be #0 anyway, and no need for IPC + |
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// ctxt switch with client by which time an idx operation may |
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// have upset everything. |
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// |
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// TODO the dependent idxdb locks are released by this point, |
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// so getDocument_ will have to re-acquire all locks, which is |
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// not only OS operation but may bump into already modified |
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// idx-es. Idea: IIdxDb::search could be reorganized into |
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// fetchRecommitting() instead - the first fetch operations |
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257 |
// would be performed while locks are still in place... |
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258 |
if (length_ > 0) |
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259 |
{ |
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|
260 |
getDocument_(0); |
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|
261 |
} |
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|
262 |
} |
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|
263 |
|
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|
264 |
LuceneHits::~LuceneHits() |
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|
265 |
{ |
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|
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delete hits_; |
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|
267 |
hits_ = 0; |
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|
268 |
|
14 | 269 |
destroyWrappers(0); |
0
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|
270 |
|
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|
271 |
delete docConsumer_; |
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|
272 |
|
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|
273 |
IdxDbMgr::instance()->releaseHndl(idxDb_); |
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|
274 |
} |
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|
275 |
|
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|
276 |
|
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|
277 |
void LuceneHits::getDocument_(int32_t index) |
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|
278 |
{ |
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|
279 |
// check if we have tried to fetch it before and failed |
14 | 280 |
//docConsumer_->throwIfFailedDocIndex(index); |
0
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|
281 |
|
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|
282 |
// common usage pattern is to enumerate hits, never to access |
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|
283 |
// them at true random manner. That means that we never need |
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284 |
// wrappers for more than the current page - ie when about to |
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|
285 |
// fetch the next page we can discard all other wrapped |
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|
286 |
// documents. Merely an memory consumption optimization |
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|
287 |
// measure, can be commented out. |
14 | 288 |
destroyWrappers(index); |
0
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|
289 |
|
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|
290 |
// if we get here, then it means we don't have the page of hit |
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|
291 |
// docs we need, but it may still throw if the hits is an |
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|
292 |
// empty object or the hits itself was NULL |
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|
293 |
docConsumer_->setPageBoundaryForIndex(index); |
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|
294 |
|
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|
295 |
IIdxDb* idx = IIdxDb::getPtr( idxDb_ ); |
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changeset
|
296 |
|
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parents:
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|
297 |
lucene::search::Hits |
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|
298 |
* currentHits = hits_; |
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|
299 |
|
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|
300 |
hits_ = 0; |
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parents:
diff
changeset
|
301 |
|
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|
302 |
// the version number of idx that produced currentHits is |
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|
303 |
// either still the same in which case we get back |
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|
304 |
// currentHits, or it has changed and in that case currentHits |
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|
305 |
// will be destroyed by this call and a new one will be |
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|
306 |
// returned - rv will recieve the pointer to the fetched document |
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parents:
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|
307 |
hits_ = idx->fetchRecommitting(currentHits, |
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parents:
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|
308 |
&idxDbVersion_, |
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|
309 |
query_, |
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|
310 |
*docConsumer_); |
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parents:
diff
changeset
|
311 |
|
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|
312 |
length_ = hits_->length(); |
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diff
changeset
|
313 |
|
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|
314 |
if (wrappers_.find(index) == wrappers_.end()) |
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parents:
diff
changeset
|
315 |
{ |
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Revision: 201011
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parents:
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|
316 |
THROW_CPIXEXC("Failed to fetch doc %d: TODO reason", |
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|
317 |
index); |
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parents:
diff
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|
318 |
} |
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parents:
diff
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|
319 |
} |
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parents:
diff
changeset
|
320 |
|
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parents:
diff
changeset
|
321 |
|
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Revision: 201011
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parents:
diff
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|
322 |
int32_t LuceneHits::length() |
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parents:
diff
changeset
|
323 |
{ |
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Revision: 201011
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parents:
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|
324 |
return length_; |
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parents:
diff
changeset
|
325 |
} |
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Revision: 201011
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parents:
diff
changeset
|
326 |
|
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Revision: 201011
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parents:
diff
changeset
|
327 |
|
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Revision: 201011
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parents:
diff
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|
328 |
/** |
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Revision: 201011
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parents:
diff
changeset
|
329 |
* HitDocumentList (for suggestion feature) |
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Revision: 201011
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parents:
diff
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|
330 |
*/ |
671dee74050a
Revision: 201011
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parents:
diff
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|
331 |
HitDocumentList::HitDocumentList() |
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Revision: 201011
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parents:
diff
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|
332 |
: HitsBase(false) // docs owned by this |
671dee74050a
Revision: 201011
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parents:
diff
changeset
|
333 |
{ |
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parents:
diff
changeset
|
334 |
; |
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parents:
diff
changeset
|
335 |
} |
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parents:
diff
changeset
|
336 |
|
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Revision: 201011
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parents:
diff
changeset
|
337 |
HitDocumentList::~HitDocumentList() |
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Revision: 201011
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parents:
diff
changeset
|
338 |
{ |
14 | 339 |
destroyWrappers(0); |
0
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Revision: 201011
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parents:
diff
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|
340 |
for (std::vector<lucene::document::Document*>::iterator i = documents_.begin(); |
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Revision: 201011
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parents:
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|
341 |
i != documents_.end(); |
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Revision: 201011
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parents:
diff
changeset
|
342 |
i++) |
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Revision: 201011
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parents:
diff
changeset
|
343 |
{ |
14 | 344 |
_CLDELETE(*i); |
0
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Revision: 201011
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parents:
diff
changeset
|
345 |
} |
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parents:
diff
changeset
|
346 |
} |
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parents:
diff
changeset
|
347 |
|
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parents:
diff
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|
348 |
void HitDocumentList::getDocument_(int32_t index) |
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diff
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|
349 |
{ |
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Revision: 201011
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parents:
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|
350 |
if (index >= 0 && index < documents_.size()) |
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Revision: 201011
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parents:
diff
changeset
|
351 |
{ |
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Revision: 201011
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parents:
diff
changeset
|
352 |
wrapDocument(index, |
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Revision: 201011
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parents:
diff
changeset
|
353 |
documents_[index]); |
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Revision: 201011
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parents:
diff
changeset
|
354 |
} |
671dee74050a
Revision: 201011
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parents:
diff
changeset
|
355 |
else |
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Revision: 201011
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parents:
diff
changeset
|
356 |
{ |
671dee74050a
Revision: 201011
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parents:
diff
changeset
|
357 |
THROW_CPIXEXC(L"Hit document index '%d' out of bounds", |
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Revision: 201011
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parents:
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|
358 |
index); |
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Revision: 201011
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parents:
diff
changeset
|
359 |
} |
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Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
360 |
} |
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Revision: 201011
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parents:
diff
changeset
|
361 |
|
671dee74050a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
362 |
int32_t HitDocumentList::length() |
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Revision: 201011
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parents:
diff
changeset
|
363 |
{ |
671dee74050a
Revision: 201011
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parents:
diff
changeset
|
364 |
return documents_.size(); |
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Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
365 |
} |
671dee74050a
Revision: 201011
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parents:
diff
changeset
|
366 |
|
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Revision: 201011
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parents:
diff
changeset
|
367 |
|
671dee74050a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
368 |
void HitDocumentList::add(lucene::document::Document* document) |
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Revision: 201011
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parents:
diff
changeset
|
369 |
{ |
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Revision: 201011
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parents:
diff
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|
370 |
documents_.push_back(document); |
671dee74050a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
371 |
} |
671dee74050a
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
372 |
|
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void HitDocumentList::remove(int index) |
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{ |
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documents_.erase(documents_.begin()+index); |
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} |
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} |