1 | /**********************************************************************
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2 | *
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3 | * lucenegdbmsource.cpp --
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4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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5 | *
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6 | * A component of the Greenstone digital library software
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7 | * from the New Zealand Digital Library Project at the
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8 | * University of Waikato, New Zealand.
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9 | *
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10 | * This program is free software; you can redistribute it and/or modify
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11 | * it under the terms of the GNU General Public License as published by
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12 | * the Free Software Foundation; either version 2 of the License, or
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13 | * (at your option) any later version.
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14 | *
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15 | * This program is distributed in the hope that it will be useful,
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | * GNU General Public License for more details.
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19 | *
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20 | * You should have received a copy of the GNU General Public License
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21 | * along with this program; if not, write to the Free Software
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22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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23 | *
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24 | *********************************************************************/
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25 |
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26 | #include "lucenegdbmsource.h"
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27 | #include "fileutil.h"
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28 | #include "OIDtools.h"
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29 | #include "expat_document.h"
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30 | #include "lucenesearch.h"
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31 |
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32 | lucenegdbmsourceclass::lucenegdbmsourceclass ()
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33 | : gdbmsourceclass()
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34 | {
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35 | classname = "lucenegdbmsource";
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36 | }
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37 |
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38 | lucenegdbmsourceclass::~lucenegdbmsourceclass () {
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39 | }
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40 |
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41 | bool lucenegdbmsourceclass::get_document (const text_t &OID, text_t &doc,
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42 | comerror_t &err, ostream &logout) {
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43 |
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44 | outconvertclass text_t2ascii;
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45 | err = noError;
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46 | if (gdbmptr == NULL) {
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47 | // most likely a configuration problem
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48 | logout << text_t2ascii
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49 | << "configuration error: lucenegdbmsource contains a null gdbmclass\n\n";
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50 | err = configurationError;
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51 | return true;
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52 | }
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53 |
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54 | // open the database
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55 | gdbmptr->setlogout(&logout);
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56 | if (!gdbmptr->opendatabase (gdbm_filename, GDBM_READER, 100, false)) {
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57 | // most likely a system problem (we have already checked that the
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58 | // gdbm database exists)
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59 | logout << text_t2ascii
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60 | << "system problem: open on gdbm database \""
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61 | << gdbm_filename << "\" failed\n\n";
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62 | err = systemProblem;
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63 | return true;
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64 | }
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65 |
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66 | text_t tOID = OID;
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67 | if (needs_translating (OID))
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68 | translate_OID (OID, tOID, err, logout);
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69 | infodbclass info;
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70 | if (!gdbmptr->getinfo(tOID, info)) return false;
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71 |
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72 | if (info["hastxt"].getint() == 0) { // there is no text for this section
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73 | return false; // true??
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74 | }
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75 | int docnum = info["docnum"].getint();
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76 |
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77 | // get the parent id
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78 | text_t parent_OID;
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79 | get_top(tOID, parent_OID);
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80 |
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81 | // locate the parent info ingdbm db
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82 | if (!gdbmptr->getinfo(parent_OID, info)) return false;
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83 |
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84 | text_t archive_dir = info["assocfilepath"];
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85 | text_t full_path_to_doc = filename_cat(collectdir, "index", "text", archive_dir, "doc.xml");
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86 |
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87 | doc.clear();
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88 | expat_document(full_path_to_doc, ((lucenesearchclass*)textsearchptr)->gdbm_level, text_t(docnum), doc);
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89 | return true;
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90 | }
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