Source Code Cross Referenced for PIMDatabase.java in  » 6.0-JDK-Modules » j2me » com » sun » kvem » midp » pim » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.kvem.midp.pim 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *   
003:         *
004:         * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License version
009:         * 2 only, as published by the Free Software Foundation.
010:         * 
011:         * This program is distributed in the hope that it will be useful, but
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:         * General Public License version 2 for more details (a copy is
015:         * included at /legal/license.txt).
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * version 2 along with this work; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA
021:         * 
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023:         * Clara, CA 95054 or visit www.sun.com if you need additional
024:         * information or have any questions.
025:         */
026:
027:        package com.sun.kvem.midp.pim;
028:
029:        import java.util.Hashtable;
030:        import java.util.Enumeration;
031:        import java.util.Vector;
032:        import javax.microedition.io.file.*;
033:        import java.io.*;
034:        import javax.microedition.io.Connector;
035:        import javax.microedition.pim.PIMException;
036:
037:        import com.sun.midp.log.*;
038:        import com.sun.midp.security.*;
039:        import com.sun.midp.main.Configuration;
040:
041:        /**
042:         * Handles reading and writing PIM data.
043:         *
044:         */
045:        public class PIMDatabase {
046:
047:            /**
048:             * Inner class to request security token from SecurityInitializer.
049:             * SecurityInitializer should be able to check this inner class name.
050:             */
051:            static private class SecurityTrusted implements 
052:                    ImplicitlyTrustedClass {
053:            };
054:
055:            /** Security token to allow access to implementation APIs */
056:            private static SecurityToken classSecurityToken = SecurityInitializer
057:                    .requestToken(new SecurityTrusted());
058:
059:            /** Name of root dir. */
060:            private String dir;
061:            /** Hashtable of categories. */
062:            private Hashtable categoriesMap = new Hashtable();
063:            /** File separator symbol. */
064:            private final String fileSep = "/";
065:
066:            // private static final Debug debug = Debug.create(PIMDatabase.class);
067:
068:            /** Directory structure of lists. */
069:            private static final String[] DIRECTORIES = { "contacts", "events",
070:                    "todo" };
071:
072:            /** Default names of lists. */
073:            String[][] LISTS = { { "DefaultContactList" },
074:                    { "DefaultEventList" }, { "DefaultTodoList" } };
075:
076:            /**
077:             * Default constructor.
078:             *
079:             */
080:            public PIMDatabase() {
081:            }
082:
083:            /**
084:             * Constructor for creating a database object for the given path.
085:             *
086:             * @param inpDir path of root directory
087:             * @throws IOException if an error occurs accessing the file
088:             */
089:            public PIMDatabase(String inpDir) throws IOException {
090:                this .dir = inpDir;
091:                String fcPrefix = "file:";
092:                if (dir.startsWith(fcPrefix)) { // remove file prefix
093:                    dir = dir.substring(fcPrefix.length());
094:                }
095:                FileConnection tmpDir;
096:                boolean tmpCond;
097:                String tmpStr, tmpStr1;
098:
099:                com.sun.midp.io.j2me.file.Protocol conn = new com.sun.midp.io.j2me.file.Protocol();
100:
101:                tmpDir = (FileConnection) conn
102:                        .openPrim(classSecurityToken, dir);
103:                tmpCond = tmpDir.exists();
104:                tmpDir.close();
105:
106:                if (!tmpCond) { // Create directories if need
107:                    synchronized (this ) {
108:                        tmpDir = (FileConnection) conn.openPrim(
109:                                classSecurityToken, dir);
110:                        tmpDir.mkdir();
111:                        tmpStr = tmpDir.getURL().substring(fcPrefix.length());
112:                        tmpDir.close();
113:                        // create list type directories with default lists
114:                        for (int i = 0; i < DIRECTORIES.length; i++) {
115:                            tmpDir = (FileConnection) conn
116:                                    .openPrim(classSecurityToken, tmpStr
117:                                            + DIRECTORIES[i]);
118:                            tmpDir.mkdir();
119:                            tmpStr1 = tmpDir.getURL().substring(
120:                                    fcPrefix.length());
121:                            tmpDir.close();
122:                            for (int j = 0; j < LISTS[i].length; j++) {
123:                                String listName = Configuration
124:                                        .getProperty(LISTS[i][j]);
125:                                tmpDir = (FileConnection) conn.openPrim(
126:                                        classSecurityToken, tmpStr1 + listName);
127:                                tmpDir.mkdir();
128:                                tmpDir.close();
129:                            }
130:                        }
131:                    }
132:                }
133:            }
134:
135:            /**
136:             *  Gets the path for given list type.
137:             *
138:             * @param listType - CONTACT_LIST, EVENT_LIST or  TODO_LIST
139:             *
140:             * @return the path
141:             */
142:            private String getTypeDir(int listType) {
143:                return dir + fileSep + DIRECTORIES[listType - 1];
144:            }
145:
146:            /**
147:             *  Gets the path for given list name.
148:             *
149:             * @param listType - CONTACT_LIST, EVENT_LIST or  TODO_LIST
150:             * @param listName    name of list
151:             *
152:             * @return the path
153:             */
154:            private String getListDir(int listType, String listName) {
155:                return getTypeDir(listType) + fileSep + listName;
156:            }
157:
158:            /**
159:             *  Gets the list of names for given list type.
160:             *
161:             * @param listType - CONTACT_LIST, EVENT_LIST or  TODO_LIST
162:             *
163:             * @return array of names
164:             */
165:            public String[] getListNames(int listType) {
166:                Vector vect_names = new Vector();
167:                Enumeration enListType = null;
168:                FileConnection tmpDir;
169:
170:                com.sun.midp.io.j2me.file.Protocol conn = new com.sun.midp.io.j2me.file.Protocol();
171:
172:                try {
173:                    tmpDir = (FileConnection) conn.openPrim(classSecurityToken,
174:                            getTypeDir(listType));
175:                    enListType = tmpDir.list();
176:                    tmpDir.close();
177:                } catch (IOException e) {
178:                    if (Logging.TRACE_ENABLED) {
179:                        Logging
180:                                .trace(e,
181:                                        "getListNames: FileConnection problem");
182:                    }
183:                }
184:                while (enListType.hasMoreElements()) {
185:                    String curr_name = (enListType.nextElement()).toString();
186:                    if (curr_name.endsWith(fileSep)) { // The last symbol is "/"
187:                        vect_names.addElement(curr_name.substring(0, curr_name
188:                                .length() - 1)); // save the list name
189:                    }
190:                }
191:                String[] names = new String[vect_names.size()];
192:                Enumeration dir_names = vect_names.elements();
193:                int i;
194:                for (i = 0; i < names.length; i++) {
195:                    names[i] = (dir_names.nextElement()).toString();
196:                }
197:                return names;
198:            }
199:
200:            /**
201:             *  Gets the default list name for given list type.
202:             *
203:             * @param listType - CONTACT_LIST, EVENT_LIST or  TODO_LIST
204:             *
205:             * @return default name
206:             */
207:            public String getDefaultListName(int listType) {
208:                return Configuration.getProperty(LISTS[listType - 1][0]);
209:            }
210:
211:            /**
212:             *  Gets the key table for given list name.
213:             *
214:             * @param listType - CONTACT_LIST, EVENT_LIST or  TODO_LIST
215:             * @param listName    name of list
216:             *
217:             * @return hashkey of keys
218:             * @throws PIMException in case of I/O error
219:             */
220:            public Hashtable getKeys(int listType, String listName)
221:                    throws PIMException {
222:                Hashtable keys = new Hashtable();
223:                Enumeration enListDir = null;
224:                FileConnection tmpDir;
225:
226:                com.sun.midp.io.j2me.file.Protocol conn = new com.sun.midp.io.j2me.file.Protocol();
227:
228:                try {
229:                    tmpDir = (FileConnection) conn.openPrim(classSecurityToken,
230:                            getTypeDir(listType) + "/" + listName);
231:                    enListDir = tmpDir.list();
232:                    tmpDir.close();
233:                } catch (IOException e) {
234:                    if (Logging.TRACE_ENABLED) {
235:                        Logging.trace(e, "getKeys: FileConnection problem");
236:                    }
237:                    throw new PIMException("getKeys: " + e.getMessage());
238:                }
239:                while (enListDir.hasMoreElements()) {
240:                    String curr_name = (enListDir.nextElement()).toString();
241:                    curr_name = curr_name.toLowerCase();
242:                    if (curr_name.endsWith(".vcf")
243:                            || curr_name.endsWith(".vcs")) {
244:                        keys.put(curr_name, curr_name);
245:                    }
246:                }
247:                return keys;
248:            }
249:
250:            /**
251:             *  Gets the element by key.
252:             *
253:             * @param listType - CONTACT_LIST, EVENT_LIST or  TODO_LIST
254:             * @param listName    name of list
255:             * @param key         key value
256:             *
257:             * @return data by key
258:             * @throws PIMException in case of I/O error
259:             */
260:            public byte[] getElement(int listType, String listName, String key)
261:                    throws PIMException {
262:                FileConnection file = null;
263:                byte[] ret_v = null;
264:
265:                com.sun.midp.io.j2me.file.Protocol conn = new com.sun.midp.io.j2me.file.Protocol();
266:
267:                try {
268:                    file = (FileConnection) conn.openPrim(classSecurityToken,
269:                            getListDir(listType, listName) + fileSep + key,
270:                            Connector.READ);
271:                    long elemSize = file.fileSize();
272:                    if (elemSize <= 0) { // no categories
273:                        ret_v = new byte[0];
274:                    } else { // read categories
275:                        byte[] buffer = new byte[(int) elemSize];
276:                        DataInputStream in = file.openDataInputStream();
277:                        in.readFully(buffer);
278:                        in.close();
279:                        ret_v = buffer;
280:                    }
281:                    file.close();
282:                } catch (IOException e) {
283:                    if (Logging.TRACE_ENABLED) {
284:                        Logging.trace(e, "getElement: FileConnection problem");
285:                    }
286:                    throw new PIMException("getElement: " + e.getMessage());
287:                } finally {
288:                    try {
289:                        if (file.isOpen()) {
290:                            file.close();
291:                        }
292:                    } catch (IOException e) {
293:                        // do nothing
294:                    }
295:                }
296:                return ret_v;
297:            }
298:
299:            /**
300:             *  Commits the PIM item by key.
301:             *
302:             * @param listType    CONTACT_LIST, EVENT_LIST or  TODO_LIST
303:             * @param listName    name of list
304:             * @param key         key of PIM item
305:             * @param data        data of PIM item
306:             *
307:             * @return key of PIM item
308:             * @throws PIMException in case of I/O error
309:             */
310:            public synchronized String commitElement(int listType,
311:                    String listName, String key, byte[] data)
312:                    throws PIMException {
313:                String ret_v = null;
314:                if (key == null) {
315:                    // make a new key
316:                    Hashtable keySet = getKeys(listType, listName);
317:                    String extension;
318:                    switch (listType) {
319:                    case PIMBridge.CONTACT_LIST:
320:                        extension = ".vcf";
321:                        break;
322:                    default:
323:                        extension = ".vcs";
324:                        break;
325:                    }
326:                    key = 1 + extension;
327:                    int i = 1;
328:                    while (keySet.containsKey(i + extension)) {
329:                        key = (++i) + extension;
330:                        // keep looking for a free file name
331:                    }
332:                }
333:                String listDir = getListDir(listType, listName);
334:                FileConnection file = null;
335:                com.sun.midp.io.j2me.file.Protocol conn = new com.sun.midp.io.j2me.file.Protocol();
336:                try {
337:                    file = (FileConnection) conn.openPrim(classSecurityToken,
338:                            listDir + fileSep + key);
339:                    if (data == null) {
340:                        if (file.exists()) {
341:                            file.delete();
342:                        }
343:                        file.close();
344:                    } else {
345:                        if (!file.exists()) {
346:                            file.create();
347:                        }
348:                        DataOutputStream out = file.openDataOutputStream();
349:                        out.write(data);
350:                        out.close();
351:                        file.close();
352:                        ret_v = new String(key);
353:                    }
354:                } catch (IOException e) {
355:                    if (Logging.TRACE_ENABLED) {
356:                        Logging.trace(e,
357:                                "commitElement: FileConnection problem");
358:                    }
359:                    throw new PIMException("commitElement: " + e.getMessage());
360:                } finally {
361:                    try {
362:                        if (file.isOpen()) {
363:                            file.close();
364:                        }
365:                    } catch (IOException e) {
366:                        // do nothing
367:                    }
368:                }
369:                return ret_v;
370:            }
371:
372:            /**
373:             *  Create the key string by the given PIM list.
374:             *
375:             * @param listType    CONTACT_LIST, EVENT_LIST or  TODO_LIST
376:             * @param listName    name of list
377:             *
378:             * @return key string
379:             */
380:            private String categoryKey(int listType, String listName) {
381:                return "" + listType + "." + listName;
382:            }
383:
384:            /**
385:             *  Sets the new categories.
386:             *
387:             * @param listType    CONTACT_LIST, EVENT_LIST or  TODO_LIST
388:             * @param listName    name of list
389:             * @param categories  string of new categories
390:             * @throws PIMException in case of I/O error
391:             * @see #getCategories
392:             *
393:             */
394:            public synchronized void setCategories(int listType,
395:                    String listName, String categories) throws PIMException {
396:                FileConnection file = null;
397:
398:                com.sun.midp.io.j2me.file.Protocol conn = new com.sun.midp.io.j2me.file.Protocol();
399:
400:                try {
401:                    file = (FileConnection) conn.openPrim(classSecurityToken,
402:                            getListDir(listType, listName) + fileSep
403:                                    + "categories.txt");
404:                    if (!file.exists()) {
405:                        file.create();
406:                    } else {
407:                        file.truncate(0);
408:                    }
409:                    DataOutputStream out = file.openDataOutputStream();
410:                    out.write(categories.getBytes());
411:                    out.close();
412:                    file.close();
413:                    categoriesMap.put(categoryKey(listType, listName),
414:                            categories);
415:                } catch (IOException e) {
416:                    if (Logging.TRACE_ENABLED) {
417:                        Logging.trace(e,
418:                                "setCategories: FileConnection problem");
419:                    }
420:                    throw new PIMException("setCategories: " + e.getMessage());
421:                } finally {
422:                    try {
423:                        if (file.isOpen()) {
424:                            file.close();
425:                        }
426:                    } catch (IOException e) {
427:                        // do nothing
428:                    }
429:                }
430:            }
431:
432:            /**
433:             *  Gets the string of supported categories.
434:             *
435:             * @param listType    CONTACT_LIST, EVENT_LIST or  TODO_LIST
436:             * @param listName    name of list
437:             *
438:             * @return string of supported categories
439:             * @throws PIMException in case of I/O error
440:             * @see #setCategories
441:             */
442:            public synchronized String getCategories(int listType,
443:                    String listName) throws PIMException {
444:                String key = categoryKey(listType, listName);
445:                String categories = (String) categoriesMap.get(key);
446:
447:                com.sun.midp.io.j2me.file.Protocol conn = new com.sun.midp.io.j2me.file.Protocol();
448:
449:                if (categories == null) {
450:                    FileConnection file = null;
451:                    try {
452:                        file = (FileConnection) conn.openPrim(
453:                                classSecurityToken, getListDir(listType,
454:                                        listName)
455:                                        + fileSep + "categories.txt");
456:                        if (!file.exists()) {
457:                            file.create();
458:                        }
459:                        long catSize = file.fileSize();
460:                        if (catSize <= 0) { // no categories
461:                            categories = "";
462:                        } else { // read categories
463:                            byte[] buffer = new byte[(int) catSize];
464:                            DataInputStream in = file.openDataInputStream();
465:                            in.readFully(buffer);
466:                            in.close();
467:                            categories = new String(buffer);
468:                        }
469:                        file.close();
470:                        categoriesMap.put(key, categories);
471:                    } catch (IOException e) {
472:                        throw new PIMException("getCategories: "
473:                                + e.getMessage());
474:                    } finally {
475:                        try {
476:                            if (file.isOpen()) {
477:                                file.close();
478:                            }
479:                        } catch (IOException e) {
480:                            throw new PIMException("getCategories: "
481:                                    + e.getMessage());
482:                        }
483:                    }
484:                }
485:                return categories;
486:            }
487:
488:        }
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