#ifndef _SEARCHDATA_H_INCLUDED_
#define _SEARCHDATA_H_INCLUDED_
/* @(#$Id: searchdata.h,v 1.3 2006-11-13 08:49:45 dockes Exp $ (C) 2004 J.F.Dockes */
#include <string>
#include <list>
#include "rcldb.h"
#ifndef NO_NAMESPACES
using std::list;
using std::string;
#endif
namespace Rcl {
/** Search clause types */
enum SClType {
SCLT_AND,
SCLT_OR, SCLT_EXCL, SCLT_FILENAME, SCLT_PHRASE, SCLT_NEAR,
SCLT_SUB
};
class SearchDataClause;
/**
* Holder for a list of search clauses. Some of the clauses can be comples
* subqueries.
*/
class SearchData {
public:
SClType m_tp; // Only SCLT_AND or SCLT_OR here
list<SearchDataClause *> m_query;
list<string> m_filetypes; // Restrict to filetypes if set.
string m_topdir; // Restrict to subtree.
// Printable expanded version of the complete query, obtained from Xapian
// valid after setQuery() call
string m_description;
SearchData(SClType tp) : m_tp(tp) {}
~SearchData() {erase();}
/** Make pristine */
void erase();
/** Is there anything but a file name search in here ? */
bool fileNameOnly();
/** Translate to Xapian query. rcldb knows about the void* */
bool toNativeQuery(Rcl::Db &db, void *, const string& stemlang);
/** We become the owner of cl and will delete it */
bool addClause(SearchDataClause *cl);
private:
/* Copyconst and assignment private and forbidden */
SearchData(const SearchData &) {}
SearchData& operator=(const SearchData&) {return *this;};
};
class SearchDataClause {
public:
SClType m_tp;
SearchDataClause(SClType tp) : m_tp(tp) {}
virtual ~SearchDataClause() {}
virtual bool toNativeQuery(Rcl::Db &db, void *, const string&) = 0;
virtual bool isFileName() {return m_tp == SCLT_FILENAME ? true : false;}
};
class SearchDataClauseSimple : public SearchDataClause {
public:
SearchDataClauseSimple(SClType tp, string txt)
: SearchDataClause(tp), m_text(txt) {}
virtual ~SearchDataClauseSimple() {}
virtual bool toNativeQuery(Rcl::Db &db, void *, const string& stemlang);
protected:
string m_text;
};
class SearchDataClauseFilename : public SearchDataClauseSimple {
public:
SearchDataClauseFilename(string txt)
: SearchDataClauseSimple(SCLT_FILENAME, m_text) {}
virtual ~SearchDataClauseFilename() {}
virtual bool toNativeQuery(Rcl::Db &db, void *, const string& stemlang);
};
class SearchDataClauseDist : public SearchDataClauseSimple {
public:
SearchDataClauseDist(SClType tp, string txt, int dist)
: SearchDataClauseSimple(tp, txt), m_distance(dist) {}
virtual ~SearchDataClauseDist() {}
virtual bool toNativeQuery(Rcl::Db &db, void *, const string& stemlang);
protected:
int m_distance;
};
class SearchDataClauseSub : public SearchDataClause {
public:
SearchDataClauseSub(SClType tp, SClType stp)
: SearchDataClause(tp), m_sub(stp) {}
virtual ~SearchDataClauseSub() {}
virtual bool toNativeQuery(Rcl::Db &db, void *, const string& stemlang);
protected:
SearchData m_sub;
};
} // Namespace Rcl
#endif /* _SEARCHDATA_H_INCLUDED_ */