119 lines
3.8 KiB
C++
119 lines
3.8 KiB
C++
/*
|
|
----
|
|
This file is part of SECONDO.
|
|
|
|
Copyright (C) 2004, University in Hagen, Department of Computer Science,
|
|
Database Systems for New Applications.
|
|
|
|
SECONDO is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
SECONDO is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with SECONDO; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
----
|
|
|
|
The class is part of a SAX parser, processing an XML file sequentially. It
|
|
offers pblic methods to inform it about events occuring while moving through
|
|
the file in forward direction (like stream processing). In this methods it
|
|
reacts to those events dispatching them to more specialised private functions
|
|
processing the read data.
|
|
|
|
*/
|
|
|
|
#ifndef ALGEBRAS_NESTEDRELATION2_DBLPPARSER_H_
|
|
#define ALGEBRAS_NESTEDRELATION2_DBLPPARSER_H_
|
|
|
|
#include "DblpImportLocalInfo.h"
|
|
#include <string>
|
|
#include "Element.h"
|
|
#include "XmlParserInterface.h"
|
|
|
|
//An unordered map (hash map) might be more efficient here, but is available
|
|
//not before C++11
|
|
#include <map>
|
|
|
|
namespace nr2a {
|
|
|
|
class ARel;
|
|
class NRel;
|
|
class DblpParser;
|
|
|
|
typedef void (DblpParser::*popMethodType)(const Element & element);
|
|
typedef Attribute* (*makeAttributeMethodType)(
|
|
const std::string *content);
|
|
|
|
class DblpParser : public XmlParserInterface
|
|
{
|
|
static const int c_attributeCount = 17;
|
|
|
|
public:
|
|
DblpParser(NRel *nrel, std::set<std::string> *stopwords,
|
|
DblpImportLocalInfo *info);
|
|
virtual ~DblpParser();
|
|
virtual void pushedElementToStack(const Element &element);
|
|
virtual void poppedElementFromStack(const Element &element);
|
|
virtual bool isElementInteresting(const Element &element) const;
|
|
virtual bool foundInterestingElement() const;
|
|
virtual void processedText(const std::string &text);
|
|
|
|
static ListExpr BuildResultType();
|
|
|
|
private:
|
|
|
|
void poppedDocument(const Element &element);
|
|
void poppedAuthor(const Element &element);
|
|
void poppedTitle(const Element &element);
|
|
void poppedSimpleElement(const Element &element);
|
|
|
|
void setAttribute(const int index, Attribute *attribute);
|
|
|
|
static Attribute *createString(const std::string *content);
|
|
static Attribute *createText(const std::string *content);
|
|
|
|
std::string simplifyTitle(const std::string title) const;
|
|
void extractKeywords(const std::string title,
|
|
std::vector<std::string> &result) const;
|
|
std::string mapElementNameToAttributeIndex
|
|
(const std::string & elementName);
|
|
|
|
static void buildMapping();
|
|
void prepareTuple();
|
|
|
|
void extractKeyword(char *tokenBuffer, int &tokenLength,
|
|
std::vector<std::string> &keywords) const;
|
|
|
|
Tuple *m_currentTuple;
|
|
NRel *m_nrel;
|
|
ListExpr m_tupleType;
|
|
std::string m_authorsText;
|
|
ARel *m_authorsList;
|
|
ListExpr m_authorsType;
|
|
ARel *m_keywords;
|
|
ListExpr m_keywordsType;
|
|
bool m_attributeSet[c_attributeCount];
|
|
std::string m_currentText;
|
|
DblpImportLocalInfo *m_info;
|
|
int m_tuple_counter = 1;
|
|
|
|
std::set<std::string> *m_stopwords;
|
|
|
|
//Maps elements' names to functions handling this elements content
|
|
static std::map<std::string, popMethodType> *parserMapping;
|
|
//Maps simple elements' names (corresponding to attribute names) to
|
|
//attributes' indexes
|
|
static std::map<std::string, int> *attributeMapping;
|
|
static makeAttributeMethodType creationMapping[c_attributeCount];
|
|
};
|
|
|
|
} /* namespace nr2a*/
|
|
|
|
#endif /* ALGEBRAS_NESTEDRELATION2_DBLPPARSER_H_*/
|