[21405] | 1 | /**********************************************************************
|
---|
| 2 | *
|
---|
| 3 | * jdbmnaiveclass.cpp --
|
---|
| 4 | * Copyright (C) 1999-2010 The New Zealand Digital Library Project
|
---|
| 5 | *
|
---|
| 6 | * A component of the Greenstone digital library software
|
---|
| 7 | * from the New Zealand Digital Library Project at the
|
---|
| 8 | * University of Waikato, New Zealand.
|
---|
| 9 | *
|
---|
| 10 | * This program is free software; you can redistribute it and/or modify
|
---|
| 11 | * it under the terms of the GNU General Public License as published by
|
---|
| 12 | * the Free Software Foundation; either version 2 of the License, or
|
---|
| 13 | * (at your option) any later version.
|
---|
| 14 | *
|
---|
| 15 | * This program is distributed in the hope that it will be useful,
|
---|
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 18 | * GNU General Public License for more details.
|
---|
| 19 | *
|
---|
| 20 | * You should have received a copy of the GNU General Public License
|
---|
| 21 | * along with this program; if not, write to the Free Software
|
---|
| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
| 23 | *
|
---|
| 24 | *********************************************************************/
|
---|
| 25 |
|
---|
| 26 | #include "jdbmnaiveclass.h"
|
---|
| 27 | #include "gsdltools.h"
|
---|
| 28 | #include "gsdlunicode.h"
|
---|
| 29 | #include "fileutil.h"
|
---|
| 30 | #include "stdlib.h"
|
---|
| 31 | #include <cstring>
|
---|
| 32 |
|
---|
| 33 |
|
---|
| 34 | jdbmnaiveclass::jdbmnaiveclass(const text_t& gsdlhome)
|
---|
| 35 | : dbclass()
|
---|
| 36 | {
|
---|
| 37 | gsdlhome_ = gsdlhome;
|
---|
| 38 |
|
---|
[21410] | 39 | text_t jdbm_jar = filename_cat(gsdlhome_,"lib","java","jdbm.jar");
|
---|
[21405] | 40 |
|
---|
| 41 | text_t jdbm_wrapper_jar = filename_cat(gsdlhome_,"bin","java","JDBMWrapper.jar");
|
---|
| 42 |
|
---|
| 43 | classpath_ = pathname_cat(jdbm_wrapper_jar,jdbm_jar);
|
---|
| 44 | classpath_cstr_ = to_utf8(classpath_).getcstr();
|
---|
| 45 | }
|
---|
| 46 |
|
---|
| 47 | jdbmnaiveclass::~jdbmnaiveclass()
|
---|
| 48 | {
|
---|
| 49 | delete [] classpath_cstr_;
|
---|
| 50 | }
|
---|
| 51 |
|
---|
| 52 |
|
---|
| 53 | // returns true if opened
|
---|
| 54 | bool jdbmnaiveclass::opendatabase (const text_t &filename, int mode, int num_retrys,
|
---|
| 55 | #ifdef __WIN32__
|
---|
| 56 | bool need_filelock
|
---|
| 57 | #else
|
---|
| 58 | bool
|
---|
| 59 | #endif
|
---|
| 60 | )
|
---|
| 61 | {
|
---|
| 62 | if (openfile_ == filename) {
|
---|
| 63 | return true;
|
---|
| 64 | }
|
---|
| 65 |
|
---|
| 66 | if (logout == NULL) {
|
---|
| 67 | logout = &cerr;
|
---|
| 68 | }
|
---|
| 69 |
|
---|
| 70 | // Map the DB mode value into equivalent JDBM 'must_exist' value
|
---|
| 71 | bool must_exist = true; // default
|
---|
| 72 |
|
---|
| 73 | if (mode == DB_WRITER_CREATE) {
|
---|
| 74 | must_exist = false;
|
---|
| 75 | }
|
---|
| 76 |
|
---|
| 77 | if (must_exist) {
|
---|
| 78 | // test that jdbm file exists
|
---|
| 79 |
|
---|
| 80 | if (!file_exists(filename)) {
|
---|
| 81 | outconvertclass text_t2ascii;
|
---|
| 82 | (*logout) << text_t2ascii
|
---|
| 83 | << "Error: JDBM filename " << filename << "does not exist\n";
|
---|
| 84 | return false;
|
---|
| 85 | }
|
---|
| 86 | }
|
---|
| 87 |
|
---|
| 88 | openfile_ = filename;
|
---|
| 89 |
|
---|
| 90 | // In naive implementation, no connection to database to open, so
|
---|
| 91 | // nothing else to do at this stage
|
---|
| 92 |
|
---|
| 93 | return true;
|
---|
| 94 | }
|
---|
| 95 |
|
---|
| 96 |
|
---|
| 97 | void jdbmnaiveclass::closedatabase ()
|
---|
| 98 | {
|
---|
| 99 | // nothing to do in naive implementation
|
---|
| 100 | }
|
---|
| 101 |
|
---|
| 102 | // returns file extension string
|
---|
| 103 | text_t jdbmnaiveclass::getfileextension ()
|
---|
| 104 | {
|
---|
| 105 | return ".jdb";
|
---|
| 106 | }
|
---|
| 107 |
|
---|
| 108 |
|
---|
| 109 | void jdbmnaiveclass::deletekey (const text_t &key)
|
---|
| 110 | {
|
---|
| 111 | if (openfile_.empty()) return;
|
---|
| 112 |
|
---|
| 113 | if (logout == NULL) {
|
---|
| 114 | logout = &cerr;
|
---|
| 115 | }
|
---|
| 116 |
|
---|
| 117 | // get a utf-8 encoded c string of the unicode key
|
---|
| 118 | char* key_cstr = (to_utf8(key)).getcstr();
|
---|
| 119 | if (key_cstr == NULL) {
|
---|
| 120 | (*logout) << "jdbmnaiveclass: out of memory" << endl;
|
---|
| 121 | return;
|
---|
| 122 | }
|
---|
| 123 |
|
---|
| 124 |
|
---|
| 125 | // delete the key<
|
---|
| 126 | char* openfile_cstr = (to_utf8(openfile_)).getcstr();
|
---|
| 127 |
|
---|
| 128 | char cmd[512];
|
---|
| 129 | sprintf(cmd,"java -cp %s JdbDel %s %s",classpath_cstr_,
|
---|
| 130 | openfile_cstr,key_cstr);
|
---|
| 131 |
|
---|
| 132 | delete [] openfile_cstr;
|
---|
| 133 |
|
---|
| 134 | int status = system(cmd);
|
---|
| 135 | if (status != 0 ) {
|
---|
| 136 | (*logout) << "jdbmnaiveclass: failed to run cmd: " << cmd << endl;
|
---|
| 137 | }
|
---|
| 138 |
|
---|
| 139 | // free up the key memory
|
---|
| 140 | delete [] key_cstr;
|
---|
| 141 | }
|
---|
| 142 |
|
---|
| 143 |
|
---|
| 144 |
|
---|
| 145 | // returns true on success
|
---|
| 146 | bool jdbmnaiveclass::getkeydata (const text_t& key, text_t &data)
|
---|
| 147 | {
|
---|
| 148 | if (openfile_.empty()) return false;
|
---|
| 149 |
|
---|
| 150 | if (logout == NULL) {
|
---|
| 151 | logout = &cerr;
|
---|
| 152 | }
|
---|
| 153 |
|
---|
| 154 | // get a utf-8 encoded c string of the unicode key
|
---|
| 155 | char* key_cstr = (to_utf8(key)).getcstr();
|
---|
| 156 | if (key_cstr == NULL) {
|
---|
| 157 | (*logout) << "jdbmnaiveclass: out of memory" << endl;
|
---|
| 158 |
|
---|
| 159 | return false;
|
---|
| 160 | }
|
---|
| 161 |
|
---|
| 162 | // fetch the result
|
---|
| 163 | char* openfile_cstr = (to_utf8(openfile_)).getcstr();
|
---|
| 164 |
|
---|
| 165 | char cmd[512];
|
---|
| 166 | sprintf(cmd,"java -cp %s JdbGet %s %s",classpath_cstr_,
|
---|
| 167 | openfile_cstr,key_cstr);
|
---|
| 168 |
|
---|
| 169 | delete [] openfile_cstr;
|
---|
| 170 |
|
---|
| 171 | FILE* PIN = popen(cmd,"r");
|
---|
| 172 |
|
---|
| 173 | if (PIN == NULL) {
|
---|
| 174 | (*logout) << "jdbmnaiveclass: failed to run cmd: " << cmd << endl;
|
---|
| 175 | }
|
---|
| 176 | else {
|
---|
| 177 | while (!feof(PIN)) {
|
---|
| 178 | char buf[256];
|
---|
| 179 | fgets(buf,256,PIN);
|
---|
| 180 |
|
---|
| 181 | cerr << "**## buf = " << buf << endl;
|
---|
| 182 |
|
---|
| 183 | cerr << "**## buf: ";
|
---|
| 184 |
|
---|
| 185 | int blen = strlen(buf);
|
---|
| 186 | for (int i=0; i< blen; i++) {
|
---|
| 187 | cerr << "(" << buf[i] << "," << (int)buf[i] << ") ";
|
---|
| 188 | }
|
---|
| 189 | cerr << endl;
|
---|
| 190 |
|
---|
| 191 |
|
---|
| 192 | data.append(buf);
|
---|
| 193 | }
|
---|
| 194 |
|
---|
| 195 | }
|
---|
| 196 |
|
---|
| 197 | delete [] key_cstr;
|
---|
| 198 |
|
---|
| 199 | cerr << "**** data before to_unicode = " << data << endl;
|
---|
| 200 |
|
---|
| 201 | data = to_uni(data); // convert to unicode
|
---|
| 202 |
|
---|
| 203 | return true;
|
---|
| 204 | }
|
---|
| 205 |
|
---|
| 206 |
|
---|
| 207 | // returns array of keys
|
---|
| 208 | text_tarray jdbmnaiveclass::getkeys ()
|
---|
| 209 | {
|
---|
| 210 | text_tarray keys;
|
---|
| 211 |
|
---|
| 212 | if (openfile_.empty()) return keys;
|
---|
| 213 |
|
---|
| 214 | if (logout == NULL) {
|
---|
| 215 | logout = &cerr;
|
---|
| 216 | }
|
---|
| 217 |
|
---|
| 218 | char* openfile_cstr = (to_utf8(openfile_)).getcstr();
|
---|
| 219 |
|
---|
| 220 | char cmd[512];
|
---|
| 221 | sprintf(cmd,"java -cp %s JdbKeys %s",classpath_cstr_,
|
---|
| 222 | openfile_cstr);
|
---|
| 223 |
|
---|
| 224 | delete [] openfile_cstr;
|
---|
| 225 |
|
---|
| 226 | FILE* PIN = popen(cmd,"r");
|
---|
| 227 |
|
---|
| 228 | if (PIN == NULL) {
|
---|
| 229 | (*logout) << "jdbmnaiveclass: failed to run cmd: " << cmd << endl;
|
---|
| 230 | }
|
---|
| 231 | else {
|
---|
| 232 | text_t key = "";
|
---|
| 233 |
|
---|
| 234 | while (!feof(PIN)) {
|
---|
| 235 |
|
---|
| 236 | char buf[256];
|
---|
| 237 | fgets(buf,256,PIN);
|
---|
| 238 | key.append(buf);
|
---|
| 239 |
|
---|
| 240 | keys.push_back(key);
|
---|
| 241 |
|
---|
| 242 | }
|
---|
| 243 | }
|
---|
| 244 |
|
---|
| 245 | pclose(PIN);
|
---|
| 246 |
|
---|
| 247 | return keys;
|
---|
| 248 | }
|
---|
| 249 |
|
---|
| 250 |
|
---|
| 251 | // returns true on success
|
---|
| 252 | bool jdbmnaiveclass::setkeydata (const text_t &key, const text_t &data)
|
---|
| 253 | {
|
---|
| 254 | if (openfile_.empty()) return false;
|
---|
| 255 |
|
---|
| 256 | if (logout == NULL) {
|
---|
| 257 | logout = &cerr;
|
---|
| 258 | }
|
---|
| 259 |
|
---|
| 260 | // get a utf-8 encoded c string of the unicode key
|
---|
| 261 | char* key_cstr = (to_utf8(key)).getcstr();
|
---|
| 262 |
|
---|
| 263 | if (key_cstr == NULL) {
|
---|
| 264 | (*logout) << "jdbmnaiveclass: out of memory" << endl;
|
---|
| 265 |
|
---|
| 266 | return false;
|
---|
| 267 | }
|
---|
| 268 |
|
---|
| 269 | char* data_cstr = (to_utf8(data)).getcstr();
|
---|
| 270 | if (data_cstr == NULL) {
|
---|
| 271 | (*logout) << "jdbmnaiveclass: out of memory" << endl;
|
---|
| 272 |
|
---|
| 273 | delete [] key_cstr;
|
---|
| 274 | return false;
|
---|
| 275 | }
|
---|
| 276 | int data_len = strlen(data_cstr);
|
---|
| 277 |
|
---|
| 278 | char* openfile_cstr = (to_utf8(openfile_)).getcstr();
|
---|
| 279 |
|
---|
| 280 | char cmd[512];
|
---|
| 281 | sprintf(cmd,"java -cp %s JdbSet %s %s %s",
|
---|
| 282 | classpath_cstr_,openfile_cstr,key_cstr,data_cstr);
|
---|
| 283 |
|
---|
| 284 | delete [] openfile_cstr;
|
---|
| 285 |
|
---|
| 286 | int status = system(cmd);
|
---|
| 287 | if (status != 0) {
|
---|
| 288 | (*logout) << "jdbmnaiveclass: failed to run cmd:"
|
---|
| 289 | << cmd << endl;
|
---|
| 290 | }
|
---|
| 291 |
|
---|
| 292 | delete [] key_cstr;
|
---|
| 293 | delete [] data_cstr;
|
---|
| 294 |
|
---|
| 295 | return (status == 0);
|
---|
| 296 | }
|
---|
| 297 |
|
---|