122 lines
2.6 KiB
C++
122 lines
2.6 KiB
C++
#ifndef lint
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static char rcsid[] = "@(#$Id: rcldb.cpp,v 1.1 2004-12-14 17:50:28 dockes Exp $ (C) 2004 J.F.Dockes";
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#endif
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#include <iostream>
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#include <string>
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#include <vector>
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using namespace std;
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#include "rcldb.h"
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#include "xapian.h"
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// Data for a xapian database
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class Native {
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public:
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bool isopen;
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bool iswritable;
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class Xapian::Database db;
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class Xapian::WritableDatabase wdb;
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vector<bool> updated;
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Native() : isopen(false), iswritable(false) {}
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};
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Rcl::Db::Db()
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{
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pdata = new Native;
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}
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Rcl::Db::~Db()
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{
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if (pdata == 0)
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return;
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Native *ndb = (Native *)pdata;
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try {
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// There is nothing to do for an ro db.
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if (ndb->isopen == false || ndb->iswritable == false) {
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delete ndb;
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return;
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}
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ndb->wdb.flush();
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delete ndb;
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} catch (const Xapian::Error &e) {
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cout << "Exception: " << e.get_msg() << endl;
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} catch (const string &s) {
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cout << "Exception: " << s << endl;
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} catch (const char *s) {
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cout << "Exception: " << s << endl;
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} catch (...) {
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cout << "Caught unknown exception" << endl;
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}
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}
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bool Rcl::Db::open(const string& dir, OpenMode mode)
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{
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if (pdata == 0)
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return false;
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Native *ndb = (Native *)pdata;
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try {
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switch (mode) {
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case DbUpd:
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ndb->wdb = Xapian::Auto::open(dir, Xapian::DB_CREATE_OR_OPEN);
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ndb->updated.resize(ndb->wdb.get_lastdocid() + 1);
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ndb->iswritable = true;
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break;
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case DbTrunc:
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ndb->wdb = Xapian::Auto::open(dir, Xapian::DB_CREATE_OR_OVERWRITE);
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ndb->iswritable = true;
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break;
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case DbRO:
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default:
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ndb->iswritable = false;
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cerr << "Not ready to open RO yet" << endl;
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exit(1);
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}
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ndb->isopen = true;
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return true;
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} catch (const Xapian::Error &e) {
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cout << "Exception: " << e.get_msg() << endl;
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} catch (const string &s) {
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cout << "Exception: " << s << endl;
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} catch (const char *s) {
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cout << "Exception: " << s << endl;
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} catch (...) {
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cout << "Caught unknown exception" << endl;
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}
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return false;
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}
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bool Rcl::Db::close()
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{
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if (pdata == 0)
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return false;
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Native *ndb = (Native *)pdata;
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if (ndb->isopen == false)
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return true;
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try {
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if (ndb->isopen == true && ndb->iswritable == true) {
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ndb->wdb.flush();
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}
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delete ndb;
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} catch (const Xapian::Error &e) {
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cout << "Exception: " << e.get_msg() << endl;
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return false;
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} catch (const string &s) {
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cout << "Exception: " << s << endl;
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return false;
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} catch (const char *s) {
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cout << "Exception: " << s << endl;
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return false;
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} catch (...) {
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cout << "Caught unknown exception" << endl;
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return false;
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}
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pdata = new Native;
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if (pdata)
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return true;
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return false;
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}
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