Source Code Cross Referenced for SearchSequence.java in  » EJB-Server-GlassFish » mail » com » sun » mail » imap » protocol » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server GlassFish » mail » com.sun.mail.imap.protocol 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003:         *
004:         * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005:         *
006:         * The contents of this file are subject to the terms of either the GNU
007:         * General Public License Version 2 only ("GPL") or the Common Development
008:         * and Distribution License("CDDL") (collectively, the "License").  You
009:         * may not use this file except in compliance with the License. You can obtain
010:         * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
011:         * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
012:         * language governing permissions and limitations under the License.
013:         *
014:         * When distributing the software, include this License Header Notice in each
015:         * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
016:         * Sun designates this particular file as subject to the "Classpath" exception
017:         * as provided by Sun in the GPL Version 2 section of the License file that
018:         * accompanied this code.  If applicable, add the following below the License
019:         * Header, with the fields enclosed by brackets [] replaced by your own
020:         * identifying information: "Portions Copyrighted [year]
021:         * [name of copyright owner]"
022:         *
023:         * Contributor(s):
024:         *
025:         * If you wish your version of this file to be governed by only the CDDL or
026:         * only the GPL Version 2, indicate your decision by adding "[Contributor]
027:         * elects to include this software in this distribution under the [CDDL or GPL
028:         * Version 2] license."  If you don't indicate a single choice of license, a
029:         * recipient has the option to distribute your version of this file under
030:         * either the CDDL, the GPL Version 2 or to extend the choice of license to
031:         * its licensees as provided above.  However, if you add GPL Version 2 code
032:         * and therefore, elected the GPL Version 2 license, then the option applies
033:         * only if the new code is made subject to such option by the copyright
034:         * holder.
035:         */
036:
037:        /*
038:         * @(#)SearchSequence.java	1.16 07/05/04
039:         */
040:
041:        package com.sun.mail.imap.protocol;
042:
043:        import java.util.*;
044:        import java.io.IOException;
045:
046:        import javax.mail.*;
047:        import javax.mail.search.*;
048:        import com.sun.mail.iap.*;
049:
050:        /**
051:         * This class traverses a search-tree and generates the 
052:         * corresponding IMAP search sequence. 
053:         *
054:         * @author	John Mani
055:         */
056:        class SearchSequence {
057:
058:            /**
059:             * Generate the IMAP search sequence for the given search expression. 
060:             */
061:            static Argument generateSequence(SearchTerm term, String charset)
062:                    throws SearchException, IOException {
063:                /* Call the appropriate handler depending on the type of
064:                 * the search-term ...
065:                 */
066:                if (term instanceof  AndTerm) // AND
067:                    return and((AndTerm) term, charset);
068:                else if (term instanceof  OrTerm) // OR
069:                    return or((OrTerm) term, charset);
070:                else if (term instanceof  NotTerm) // NOT
071:                    return not((NotTerm) term, charset);
072:                else if (term instanceof  HeaderTerm) // HEADER
073:                    return header((HeaderTerm) term, charset);
074:                else if (term instanceof  FlagTerm) // FLAG
075:                    return flag((FlagTerm) term);
076:                else if (term instanceof  FromTerm) { // FROM
077:                    FromTerm fterm = (FromTerm) term;
078:                    return from(fterm.getAddress().toString(), charset);
079:                } else if (term instanceof  FromStringTerm) { // FROM
080:                    FromStringTerm fterm = (FromStringTerm) term;
081:                    return from(fterm.getPattern(), charset);
082:                } else if (term instanceof  RecipientTerm) { // RECIPIENT
083:                    RecipientTerm rterm = (RecipientTerm) term;
084:                    return recipient(rterm.getRecipientType(), rterm
085:                            .getAddress().toString(), charset);
086:                } else if (term instanceof  RecipientStringTerm) { // RECIPIENT
087:                    RecipientStringTerm rterm = (RecipientStringTerm) term;
088:                    return recipient(rterm.getRecipientType(), rterm
089:                            .getPattern(), charset);
090:                } else if (term instanceof  SubjectTerm) // SUBJECT
091:                    return subject((SubjectTerm) term, charset);
092:                else if (term instanceof  BodyTerm) // BODY
093:                    return body((BodyTerm) term, charset);
094:                else if (term instanceof  SizeTerm) // SIZE
095:                    return size((SizeTerm) term);
096:                else if (term instanceof  SentDateTerm) // SENTDATE
097:                    return sentdate((SentDateTerm) term);
098:                else if (term instanceof  ReceivedDateTerm) // INTERNALDATE
099:                    return receiveddate((ReceivedDateTerm) term);
100:                else if (term instanceof  MessageIDTerm) // MessageID
101:                    return messageid((MessageIDTerm) term, charset);
102:                else
103:                    throw new SearchException("Search too complex");
104:            }
105:
106:            /* 
107:             * Check if the "text" terms in the given SearchTerm contain
108:             * non US-ASCII characters.
109:             */
110:            static boolean isAscii(SearchTerm term) {
111:                if (term instanceof  AndTerm || term instanceof  OrTerm) {
112:                    SearchTerm[] terms;
113:                    if (term instanceof  AndTerm)
114:                        terms = ((AndTerm) term).getTerms();
115:                    else
116:                        terms = ((OrTerm) term).getTerms();
117:
118:                    for (int i = 0; i < terms.length; i++)
119:                        if (!isAscii(terms[i])) // outta here !
120:                            return false;
121:                } else if (term instanceof  NotTerm)
122:                    return isAscii(((NotTerm) term).getTerm());
123:                else if (term instanceof  StringTerm)
124:                    return isAscii(((StringTerm) term).getPattern());
125:                else if (term instanceof  AddressTerm)
126:                    return isAscii(((AddressTerm) term).getAddress().toString());
127:
128:                // Any other term returns true.
129:                return true;
130:            }
131:
132:            private static boolean isAscii(String s) {
133:                int l = s.length();
134:
135:                for (int i = 0; i < l; i++) {
136:                    if ((int) s.charAt(i) > 0177) // non-ascii
137:                        return false;
138:                }
139:                return true;
140:            }
141:
142:            private static Argument and(AndTerm term, String charset)
143:                    throws SearchException, IOException {
144:                // Combine the sequences for both terms
145:                SearchTerm[] terms = term.getTerms();
146:                // Generate the search sequence for the first term
147:                Argument result = generateSequence(terms[0], charset);
148:                // Append other terms
149:                for (int i = 1; i < terms.length; i++)
150:                    result.append(generateSequence(terms[i], charset));
151:                return result;
152:            }
153:
154:            private static Argument or(OrTerm term, String charset)
155:                    throws SearchException, IOException {
156:                SearchTerm[] terms = term.getTerms();
157:
158:                /* The IMAP OR operator takes only two operands. So if
159:                 * we have more than 2 operands, group them into 2-operand
160:                 * OR Terms.
161:                 */
162:                if (terms.length > 2) {
163:                    SearchTerm t = terms[0];
164:
165:                    // Include rest of the terms
166:                    for (int i = 1; i < terms.length; i++)
167:                        t = new OrTerm(t, terms[i]);
168:
169:                    term = (OrTerm) t; // set 'term' to the new jumbo OrTerm we
170:                    // just created
171:                    terms = term.getTerms();
172:                }
173:
174:                // 'term' now has only two operands
175:                Argument result = new Argument();
176:
177:                // Add the OR search-key, if more than one term
178:                if (terms.length > 1)
179:                    result.writeAtom("OR");
180:
181:                /* If this term is an AND expression, we need to enclose it
182:                 * within paranthesis.
183:                 *
184:                 * AND expressions are either AndTerms or FlagTerms 
185:                 */
186:                if (terms[0] instanceof  AndTerm || terms[0] instanceof  FlagTerm)
187:                    result.writeArgument(generateSequence(terms[0], charset));
188:                else
189:                    result.append(generateSequence(terms[0], charset));
190:
191:                // Repeat the above for the second term, if there is one
192:                if (terms.length > 1) {
193:                    if (terms[1] instanceof  AndTerm
194:                            || terms[1] instanceof  FlagTerm)
195:                        result
196:                                .writeArgument(generateSequence(terms[1],
197:                                        charset));
198:                    else
199:                        result.append(generateSequence(terms[1], charset));
200:                }
201:
202:                return result;
203:            }
204:
205:            private static Argument not(NotTerm term, String charset)
206:                    throws SearchException, IOException {
207:                Argument result = new Argument();
208:
209:                // Add the NOT search-key
210:                result.writeAtom("NOT");
211:
212:                /* If this term is an AND expression, we need to enclose it
213:                 * within paranthesis. 
214:                 *
215:                 * AND expressions are either AndTerms or FlagTerms 
216:                 */
217:                SearchTerm nterm = term.getTerm();
218:                if (nterm instanceof  AndTerm || nterm instanceof  FlagTerm)
219:                    result.writeArgument(generateSequence(nterm, charset));
220:                else
221:                    result.append(generateSequence(nterm, charset));
222:
223:                return result;
224:            }
225:
226:            private static Argument header(HeaderTerm term, String charset)
227:                    throws SearchException, IOException {
228:                Argument result = new Argument();
229:                result.writeAtom("HEADER");
230:                result.writeString(term.getHeaderName());
231:                result.writeString(term.getPattern(), charset);
232:                return result;
233:            }
234:
235:            private static Argument messageid(MessageIDTerm term, String charset)
236:                    throws SearchException, IOException {
237:                Argument result = new Argument();
238:                result.writeAtom("HEADER");
239:                result.writeString("Message-ID");
240:                // XXX confirm that charset conversion ought to be done
241:                result.writeString(term.getPattern(), charset);
242:                return result;
243:            }
244:
245:            private static Argument flag(FlagTerm term) throws SearchException {
246:                boolean set = term.getTestSet();
247:
248:                Argument result = new Argument();
249:
250:                Flags flags = term.getFlags();
251:                Flags.Flag[] sf = flags.getSystemFlags();
252:                String[] uf = flags.getUserFlags();
253:                if (sf.length == 0 && uf.length == 0)
254:                    throw new SearchException("Invalid FlagTerm");
255:
256:                for (int i = 0; i < sf.length; i++) {
257:                    if (sf[i] == Flags.Flag.DELETED)
258:                        result.writeAtom(set ? "DELETED" : "UNDELETED");
259:                    else if (sf[i] == Flags.Flag.ANSWERED)
260:                        result.writeAtom(set ? "ANSWERED" : "UNANSWERED");
261:                    else if (sf[i] == Flags.Flag.DRAFT)
262:                        result.writeAtom(set ? "DRAFT" : "UNDRAFT");
263:                    else if (sf[i] == Flags.Flag.FLAGGED)
264:                        result.writeAtom(set ? "FLAGGED" : "UNFLAGGED");
265:                    else if (sf[i] == Flags.Flag.RECENT)
266:                        result.writeAtom(set ? "RECENT" : "OLD");
267:                    else if (sf[i] == Flags.Flag.SEEN)
268:                        result.writeAtom(set ? "SEEN" : "UNSEEN");
269:                }
270:
271:                for (int i = 0; i < uf.length; i++) {
272:                    result.writeAtom(set ? "KEYWORD" : "UNKEYWORD");
273:                    result.writeAtom(uf[i]);
274:                }
275:
276:                return result;
277:            }
278:
279:            private static Argument from(String address, String charset)
280:                    throws SearchException, IOException {
281:                Argument result = new Argument();
282:                result.writeAtom("FROM");
283:                result.writeString(address, charset);
284:                return result;
285:            }
286:
287:            private static Argument recipient(Message.RecipientType type,
288:                    String address, String charset) throws SearchException,
289:                    IOException {
290:                Argument result = new Argument();
291:
292:                if (type == Message.RecipientType.TO)
293:                    result.writeAtom("TO");
294:                else if (type == Message.RecipientType.CC)
295:                    result.writeAtom("CC");
296:                else if (type == Message.RecipientType.BCC)
297:                    result.writeAtom("BCC");
298:                else
299:                    throw new SearchException("Illegal Recipient type");
300:
301:                result.writeString(address, charset);
302:                return result;
303:            }
304:
305:            private static Argument subject(SubjectTerm term, String charset)
306:                    throws SearchException, IOException {
307:                Argument result = new Argument();
308:
309:                result.writeAtom("SUBJECT");
310:                result.writeString(term.getPattern(), charset);
311:                return result;
312:            }
313:
314:            private static Argument body(BodyTerm term, String charset)
315:                    throws SearchException, IOException {
316:                Argument result = new Argument();
317:
318:                result.writeAtom("BODY");
319:                result.writeString(term.getPattern(), charset);
320:                return result;
321:            }
322:
323:            private static Argument size(SizeTerm term) throws SearchException {
324:                Argument result = new Argument();
325:
326:                switch (term.getComparison()) {
327:                case ComparisonTerm.GT:
328:                    result.writeAtom("LARGER");
329:                    break;
330:                case ComparisonTerm.LT:
331:                    result.writeAtom("SMALLER");
332:                    break;
333:                default:
334:                    // GT and LT is all we get from IMAP for size
335:                    throw new SearchException("Cannot handle Comparison");
336:                }
337:
338:                result.writeNumber(term.getNumber());
339:                return result;
340:            }
341:
342:            // Date SEARCH stuff ...
343:
344:            /**
345:             * Print an IMAP Date string, that is suitable for the Date
346:             * SEARCH commands.
347:             *
348:             * The IMAP Date string is :
349:             *	date ::= date_day "-" date_month "-" date_year	
350:             *
351:             * Note that this format does not contain the TimeZone
352:             */
353:            private static String monthTable[] = { "Jan", "Feb", "Mar", "Apr",
354:                    "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
355:
356:            // A GregorianCalendar object in the current timezone
357:            private static Calendar cal = new GregorianCalendar();
358:
359:            private static String toIMAPDate(Date date) {
360:                StringBuffer s = new StringBuffer();
361:                cal.setTime(date);
362:
363:                s.append(cal.get(Calendar.DATE)).append("-");
364:                s.append(monthTable[cal.get(Calendar.MONTH)]).append('-');
365:                s.append(cal.get(Calendar.YEAR));
366:
367:                return s.toString();
368:            }
369:
370:            private static Argument sentdate(DateTerm term)
371:                    throws SearchException {
372:                Argument result = new Argument();
373:                String date = toIMAPDate(term.getDate());
374:
375:                switch (term.getComparison()) {
376:                case ComparisonTerm.GT:
377:                    result.writeAtom("SENTSINCE " + date);
378:                    break;
379:                case ComparisonTerm.EQ:
380:                    result.writeAtom("SENTON " + date);
381:                    break;
382:                case ComparisonTerm.LT:
383:                    result.writeAtom("SENTBEFORE " + date);
384:                    break;
385:                case ComparisonTerm.GE:
386:                    result
387:                            .writeAtom("OR SENTSINCE " + date + " SENTON "
388:                                    + date);
389:                    break;
390:                case ComparisonTerm.LE:
391:                    result.writeAtom("OR SENTBEFORE " + date + " SENTON "
392:                            + date);
393:                    break;
394:                case ComparisonTerm.NE:
395:                    result.writeAtom("NOT SENTON " + date);
396:                    break;
397:                default:
398:                    throw new SearchException("Cannot handle Date Comparison");
399:                }
400:
401:                return result;
402:            }
403:
404:            private static Argument receiveddate(DateTerm term)
405:                    throws SearchException {
406:                Argument result = new Argument();
407:                String date = toIMAPDate(term.getDate());
408:
409:                switch (term.getComparison()) {
410:                case ComparisonTerm.GT:
411:                    result.writeAtom("SINCE " + date);
412:                    break;
413:                case ComparisonTerm.EQ:
414:                    result.writeAtom("ON " + date);
415:                    break;
416:                case ComparisonTerm.LT:
417:                    result.writeAtom("BEFORE " + date);
418:                    break;
419:                case ComparisonTerm.GE:
420:                    result.writeAtom("OR SINCE " + date + " ON " + date);
421:                    break;
422:                case ComparisonTerm.LE:
423:                    result.writeAtom("OR BEFORE " + date + " ON " + date);
424:                    break;
425:                case ComparisonTerm.NE:
426:                    result.writeAtom("NOT ON " + date);
427:                    break;
428:                default:
429:                    throw new SearchException("Cannot handle Date Comparison");
430:                }
431:
432:                return result;
433:            }
434:        }
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