Examples of com.ibm.icu.util.BasicTimeZone

com.ibm.icu.util.BasicTimeZone
BasicTimeZone is an abstract class extending TimeZone. This class provides some additional methods to access time zone transitions and rules. All ICU TimeZone concrete subclasses extend this class. @see com.ibm.icu.util.TimeZoneRule @see com.ibm.icu.util.TimeZoneTransition @stable ICU 3.8

        for (int i = 0; i < tzids.length; i++) {
            if (skipIfBeforeICU(4, 3, 1) && tzids[i].equals("Asia/Amman")) {
                // See #7008
                return;
            }
            BasicTimeZone olsontz = (BasicTimeZone)TimeZone.getTimeZone(tzids[i], TimeZone.TIMEZONE_ICU);
            VTimeZone vtz_org = VTimeZone.create(tzids[i]);
            vtz_org.setTZURL("http://source.icu-project.org/timezone");
            vtz_org.setLastModified(new Date());
            VTimeZone vtz_new = null;
            try {
                // Write out VTIMEZONE
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                OutputStreamWriter writer = new OutputStreamWriter(baos);
                vtz_org.write(writer);
                writer.close();
                byte[] vtzdata = baos.toByteArray();
                // Read VTIMEZONE
                ByteArrayInputStream bais = new ByteArrayInputStream(vtzdata);
                InputStreamReader reader = new InputStreamReader(bais);
                vtz_new = VTimeZone.create(reader);
                reader.close();


                // Write out VTIMEZONE one more time
                ByteArrayOutputStream baos1 = new ByteArrayOutputStream();
                OutputStreamWriter writer1 = new OutputStreamWriter(baos1);
                vtz_new.write(writer1);
                writer1.close();
                byte[] vtzdata1 = baos1.toByteArray();


                // Make sure VTIMEZONE data is exactly same with the first one
                if (vtzdata.length != vtzdata1.length) {
                    errln("FAIL: different VTIMEZONE data length");
                }
                for (int j = 0; j < vtzdata.length; j++) {
                    if (vtzdata[j] != vtzdata1[j]) {
                        errln("FAIL: different VTIMEZONE data");
                        break;
                    }
                }
            } catch (IOException ioe) {
                errln("FAIL: IO error while writing/reading VTIMEZONE data");
            }
            // Check equivalency after the first transition.
            // The DST information before the first transition might be lost
            // because there is no good way to represent the initial time with
            // VTIMEZONE.
            if (vtz_new.getOffset(startTime) != olsontz.getOffset(startTime)) {
                errln("FAIL: VTimeZone for " + tzids[i]
                         + " is not equivalent to its OlsonTimeZone corresponding at " + startTime);
            }
            TimeZoneTransition tzt = olsontz.getNextTransition(startTime, false);
            if (tzt != null) {
                if (!vtz_new.hasEquivalentTransitions(olsontz, tzt.getTime(), endTime, true)) {
                    errln("FAIL: VTimeZone for " + tzids[i] + " is not equivalent to its OlsonTimeZone corresponding.");
                }
                if (!vtz_new.hasEquivalentTransitions(olsontz, tzt.getTime(), endTime, false)) {

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            for (int i = 0; i < tzids.length; i++) {
                if (skipIfBeforeICU(4, 3, 1) && tzids[i].equals("Asia/Amman")) {
                    // See #7008
                    return;
                }
                BasicTimeZone olsontz = (BasicTimeZone)TimeZone.getTimeZone(tzids[i], TimeZone.TIMEZONE_ICU);
                VTimeZone vtz_org = VTimeZone.create(tzids[i]);
                VTimeZone vtz_new = null;
                try {
                    // Write out VTIMEZONE
                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
                    OutputStreamWriter writer = new OutputStreamWriter(baos);
                    vtz_org.write(writer, startTime);
                    writer.close();
                    byte[] vtzdata = baos.toByteArray();
                    // Read VTIMEZONE
                    ByteArrayInputStream bais = new ByteArrayInputStream(vtzdata);
                    InputStreamReader reader = new InputStreamReader(bais);
                    vtz_new = VTimeZone.create(reader);
                    reader.close();


                } catch (IOException ioe) {
                    errln("FAIL: IO error while writing/reading VTIMEZONE data");
                }
                // Check equivalency after the first transition.
                // The DST information before the first transition might be lost
                // because there is no good way to represent the initial time with
                // VTIMEZONE.
                if (vtz_new.getOffset(startTime) != olsontz.getOffset(startTime)) {
                    errln("FAIL: VTimeZone for " + tzids[i]
                             + " is not equivalent to its OlsonTimeZone corresponding at " + startTime);
                }
                TimeZoneTransition tzt = olsontz.getNextTransition(startTime, false);
                if (tzt != null) {
                    if (!vtz_new.hasEquivalentTransitions(olsontz, tzt.getTime(), endTime, true)) {
                        errln("FAIL: VTimeZone for " + tzids[i] + "(>=" + startTime + ") is not equivalent to its OlsonTimeZone corresponding.");
                    }
                }

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        String[] tzids = getTestZIDs();
        for (int n = 0; n < testTimes.length; n++) {
            long time = testTimes[n];
            for (int i = 0; i < tzids.length; i++) {
                BasicTimeZone tz = (BasicTimeZone)TimeZone.getTimeZone(tzids[i], TimeZone.TIMEZONE_ICU);
                TimeZoneRule[] rules = tz.getSimpleTimeZoneRulesNear(time);
                if (rules == null) {
                    errln("FAIL: Failed to extract simple rules for " + tzids[i] + " at " + time);
                } else {
                    if (rules.length == 1) {
                        if (!(rules[0] instanceof InitialTimeZoneRule)) {

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    /*
     * API coverage test for VTimeZone
     */
    public void TestVTimeZoneCoverage() {
        final String TZID = "Europe/Moscow";
        BasicTimeZone otz = (BasicTimeZone)TimeZone.getTimeZone(TZID, TimeZone.TIMEZONE_ICU);
        VTimeZone vtz = VTimeZone.create(TZID);


        // getOffset(era, year, month, day, dayOfWeek, milliseconds)
        int offset1 = otz.getOffset(GregorianCalendar.AD, 2007, Calendar.JULY, 1, Calendar.SUNDAY, 0);
        int offset2 = vtz.getOffset(GregorianCalendar.AD, 2007, Calendar.JULY, 1, Calendar.SUNDAY, 0);
        if (offset1 != offset2) {
            errln("FAIL: getOffset(int,int,int,int,int,int) returned different results in VTimeZone and OlsonTimeZone");
        }


        // getOffset(date, local, offsets)
        int[] offsets1 = new int[2];
        int[] offsets2 = new int[2];
        long t = System.currentTimeMillis();
        otz.getOffset(t, false, offsets1);
        vtz.getOffset(t, false, offsets2);
        if (offsets1[0] != offsets2[0] || offsets1[1] != offsets2[1]) {
            errln("FAIL: getOffset(long,boolean,int[]) returned different results in VTimeZone and OlsonTimeZone");
        }


        // getRawOffset
        if (otz.getRawOffset() != vtz.getRawOffset()) {
            errln("FAIL: getRawOffset returned different results in VTimeZone and OlsonTimeZone");
        }


        // inDaylightTime
        Date d = new Date();
        if (otz.inDaylightTime(d) != vtz.inDaylightTime(d)) {
            errln("FAIL: inDaylightTime returned different results in VTimeZone and OlsonTimeZone");
        }


        // useDaylightTime
        if (otz.useDaylightTime() != vtz.useDaylightTime()) {
            errln("FAIL: useDaylightTime returned different results in VTimeZone and OlsonTimeZone");
        }


        // setRawOffset
        final int RAW = -10*HOUR;
        VTimeZone tmpvtz = (VTimeZone)vtz.clone();
        tmpvtz.setRawOffset(RAW);
        if (tmpvtz.getRawOffset() != RAW) {
            logln("setRawOffset is implemented");
        }


        // hasSameRules
        boolean bSame = otz.hasSameRules(vtz);
        logln("OlsonTimeZone#hasSameRules(VTimeZone) should return false always for now - actual: " + bSame);


        // getTZURL/setTZURL
        final String TZURL = "http://icu-project.org/timezone";
        String tzurl = vtz.getTZURL();
        if (tzurl != null) {
            errln("FAIL: getTZURL returned non-null value");
        }
        vtz.setTZURL(TZURL);
        tzurl = vtz.getTZURL();
        if (!TZURL.equals(tzurl)) {
            errln("FAIL: URL returned by getTZURL does not match the one set by setTZURL");
        }


        // getLastModified/setLastModified
        Date lastmod = vtz.getLastModified();
        if (lastmod != null) {
            errln("FAIL: getLastModified returned non-null value");
        }
        Date newdate = new Date();
        vtz.setLastModified(newdate);
        lastmod = vtz.getLastModified();
        if (!newdate.equals(lastmod)) {
            errln("FAIL: Date returned by getLastModified does not match the one set by setLastModified");
        }


        // getNextTransition/getPreviousTransition
        long base = getUTCMillis(2007, Calendar.JULY, 1);
        TimeZoneTransition tzt1 = otz.getNextTransition(base, true);
        TimeZoneTransition tzt2 = vtz.getNextTransition(base, true);
        if (tzt1.equals(tzt2)) {
            errln("FAIL: getNextTransition returned different results in VTimeZone and OlsonTimeZone");
        }
        tzt1 = otz.getPreviousTransition(base, false);
        tzt2 = vtz.getPreviousTransition(base, false);
        if (tzt1.equals(tzt2)) {
            errln("FAIL: getPreviousTransition returned different results in VTimeZone and OlsonTimeZone");
        }

View Full Code Here

    /*
     * Check if a time shift really happens on each transition returned by getNextTransition or
     * getPreviousTransition in the specified time range
     */
    private void verifyTransitions(TimeZone tz, long start, long end) {
        BasicTimeZone icutz = (BasicTimeZone)tz;
        long time;
        int[] before = new int[2];
        int[] after = new int[2];
        TimeZoneTransition tzt0;


        // Ascending
        tzt0 = null;
        time = start;
        while(true) {
            TimeZoneTransition tzt = icutz.getNextTransition(time, false);


            if (tzt == null) {
                break;
            }
            time = tzt.getTime();
            if (time >= end) {
                break;
            }
            icutz.getOffset(time, false, after);
            icutz.getOffset(time - 1, false, before);


            if (after[0] == before[0] && after[1] == before[1]) {
                errln("FAIL: False transition returned by getNextTransition for " + icutz.getID() + " at " + time);
            }
            if (tzt0 != null &&
                    (tzt0.getTo().getRawOffset() != tzt.getFrom().getRawOffset()
                    || tzt0.getTo().getDSTSavings() != tzt.getFrom().getDSTSavings())) {
                errln("FAIL: TO rule of the previous transition does not match FROM rule of this transtion at "
                        + time + " for " + icutz.getID());                
            }
            tzt0 = tzt;
        }


        // Descending
        tzt0 = null;
        time = end;
        while(true) {
            TimeZoneTransition tzt = icutz.getPreviousTransition(time, false);
            if (tzt == null) {
                break;
            }
            time = tzt.getTime();
            if (time <= start) {
                break;
            }
            icutz.getOffset(time, false, after);
            icutz.getOffset(time - 1, false, before);


            if (after[0] == before[0] && after[1] == before[1]) {
                errln("FAIL: False transition returned by getPreviousTransition for " + icutz.getID() + " at " + time);
            }


            if (tzt0 != null &&
                    (tzt0.getFrom().getRawOffset() != tzt.getTo().getRawOffset()
                    || tzt0.getFrom().getDSTSavings() != tzt.getTo().getDSTSavings())) {
                errln("FAIL: TO rule of the next transition does not match FROM rule in this transtion at "
                        + time + " for " + icutz.getID());                
            }
            tzt0 = tzt;
        }
    }

View Full Code Here


    /*
     * Compare all time transitions in 2 time zones in the specified time range in ascending order
     */
    private void compareTransitionsAscending(TimeZone tz1, TimeZone tz2, long start, long end, boolean inclusive) {
        BasicTimeZone z1 = (BasicTimeZone)tz1;
        BasicTimeZone z2 = (BasicTimeZone)tz2;
        String zid1 = tz1.getID();
        String zid2 = tz2.getID();


        long time = start;
        while(true) {
            TimeZoneTransition tzt1 = z1.getNextTransition(time, inclusive);
            TimeZoneTransition tzt2 = z2.getNextTransition(time, inclusive);
            boolean inRange1 = false;
            boolean inRange2 = false;
            if (tzt1 != null) {
                if (tzt1.getTime() < end || (inclusive && tzt1.getTime() == end)) {
                    inRange1 = true;

View Full Code Here


    /*
     * Compare all time transitions in 2 time zones in the specified time range in descending order
     */
    private void compareTransitionsDescending(TimeZone tz1, TimeZone tz2, long start, long end, boolean inclusive) {
        BasicTimeZone z1 = (BasicTimeZone)tz1;
        BasicTimeZone z2 = (BasicTimeZone)tz2;
        String zid1 = tz1.getID();
        String zid2 = tz2.getID();
        long time = end;
        while(true) {
            TimeZoneTransition tzt1 = z1.getPreviousTransition(time, inclusive);
            TimeZoneTransition tzt2 = z2.getPreviousTransition(time, inclusive);
            boolean inRange1 = false;
            boolean inRange2 = false;
            if (tzt1 != null) {
                if (tzt1.getTime() > start || (inclusive && tzt1.getTime() == start)) {
                    inRange1 = true;

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                    }
                }
                if (tztype != TZTYPE_UNK) {
                    copy = (Calendar)cal.clone();
                    TimeZone tz = copy.getTimeZone();
                    BasicTimeZone btz = null;
                    if (tz instanceof BasicTimeZone) {
                        btz = (BasicTimeZone)tz;
                    }


                    // Get local millis
                    copy.set(Calendar.ZONE_OFFSET, 0);
                    copy.set(Calendar.DST_OFFSET, 0);
                    long localMillis = copy.getTimeInMillis();


                    // Make sure parsed time zone type (Standard or Daylight)
                    // matches the rule used by the parsed time zone.
                    int[] offsets = new int[2];
                    if (btz != null) {
                        if (tztype == TZTYPE_STD) {
                            btz.getOffsetFromLocal(localMillis,
                                    BasicTimeZone.LOCAL_STD, BasicTimeZone.LOCAL_STD, offsets);
                        } else {
                            btz.getOffsetFromLocal(localMillis,
                                    BasicTimeZone.LOCAL_DST, BasicTimeZone.LOCAL_DST, offsets);
                        }
                    } else {
                        // No good way to resolve ambiguous time at transition,
                        // but following code work in most case.
                        tz.getOffset(localMillis, true, offsets);


                        if (tztype == TZTYPE_STD && offsets[1] != 0 || tztype == TZTYPE_DST && offsets[1] == 0) {
                            // Roll back one day and try it again.
                            // Note: This code assumes 1. timezone transition only happens once within 24 hours at max
                            // 2. the difference of local offsets at the transition is less than 24 hours.
                            tz.getOffset(localMillis - (24*60*60*1000), true, offsets);
                        }
                    }


                    // Now, compare the results with parsed type, either standard or daylight saving time
                    int resolvedSavings = offsets[1];
                    if (tztype == TZTYPE_STD) {
                        if (offsets[1] != 0) {
                            // Override DST_OFFSET = 0 in the result calendar
                            resolvedSavings = 0;
                        }
                    } else { // tztype == TZTYPE_DST
                        if (offsets[1] == 0) {
                            if (btz != null) {
                                long time = localMillis + offsets[0];
                                // We use the nearest daylight saving time rule.
                                TimeZoneTransition beforeTrs, afterTrs;
                                long beforeT = time, afterT = time;
                                int beforeSav = 0, afterSav = 0;


                                // Search for DST rule before or on the time
                                while (true) {
                                    beforeTrs = btz.getPreviousTransition(beforeT, true);
                                    if (beforeTrs == null) {
                                        break;
                                    }
                                    beforeT = beforeTrs.getTime() - 1;
                                    beforeSav = beforeTrs.getFrom().getDSTSavings();
                                    if (beforeSav != 0) {
                                        break;
                                    }
                                }


                                // Search for DST rule after the time
                                while (true) {
                                    afterTrs = btz.getNextTransition(afterT, false);
                                    if (afterTrs == null) {
                                        break;
                                    }
                                    afterT = afterTrs.getTime();
                                    afterSav = afterTrs.getTo().getDSTSavings();
                                    if (afterSav != 0) {
                                        break;
                                    }
                                }


                                if (beforeTrs != null && afterTrs != null) {
                                    if (time - beforeT > afterT - time) {
                                        resolvedSavings = afterSav;
                                    } else {
                                        resolvedSavings = beforeSav;
                                    }
                                } else if (beforeTrs != null && beforeSav != 0) {
                                    resolvedSavings = beforeSav;
                                } else if (afterTrs != null && afterSav != 0) {
                                    resolvedSavings = afterSav;
                                } else {
                                    resolvedSavings = btz.getDSTSavings();
                                }
                            } else {
                                resolvedSavings = tz.getDSTSavings();
                            }
                            if (resolvedSavings == 0) {

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                    String id = TimeZone.getCanonicalID(ids[zidx]);
                    if (id == null || !id.equals(ids[zidx])) {
                        // Skip aliases
                        continue;
                    }
                    BasicTimeZone btz = (BasicTimeZone)TimeZone.getTimeZone(ids[zidx], TimeZone.TIMEZONE_ICU);
                    TimeZone tz = TimeZone.getTimeZone(ids[zidx]);
                    sdf.setTimeZone(tz);


                    long t = START_TIME;
                    TimeZoneTransition tzt = null;
                    boolean middle = true;
                    while (t < END_TIME) {
                        if (tzt == null) {
                            testTimes[0] = t;
                            expectedRoundTrip[0] = true;
                            testLen = 1;
                        } else {
                            int fromOffset = tzt.getFrom().getRawOffset() + tzt.getFrom().getDSTSavings();
                            int toOffset = tzt.getTo().getRawOffset() + tzt.getTo().getDSTSavings();
                            int delta = toOffset - fromOffset;
                            if (delta < 0) {
                                boolean isDstDecession = tzt.getFrom().getDSTSavings() > 0 && tzt.getTo().getDSTSavings() == 0;
                                testTimes[0] = t + delta - 1;
                                expectedRoundTrip[0] = true;
                                testTimes[1] = t + delta;
                                expectedRoundTrip[1] = isDstDecession ?
                                        !AMBIGUOUS_DST_DECESSION[patidx] : !AMBIGUOUS_NEGATIVE_SHIFT[patidx];
                                testTimes[2] = t - 1;
                                expectedRoundTrip[2] = isDstDecession ?
                                        !AMBIGUOUS_DST_DECESSION[patidx] : !AMBIGUOUS_NEGATIVE_SHIFT[patidx];
                                testTimes[3] = t;
                                expectedRoundTrip[3] = true;
                                testLen = 4;
                            } else {
                                testTimes[0] = t - 1;
                                expectedRoundTrip[0] = true;
                                testTimes[1] = t;
                                expectedRoundTrip[1] = true;
                                testLen = 2;
                            }
                        }
                        for (int testidx = 0; testidx < testLen; testidx++) {
                            testCounts++;
                            timer = System.currentTimeMillis();
                            String text = sdf.format(new Date(testTimes[testidx]));
                            try {
                                Date parsedDate = sdf.parse(text);
                                long restime = parsedDate.getTime();
                                if (restime != testTimes[testidx]) {
                                    StringBuffer msg = new StringBuffer();
                                    msg.append("Time round trip failed for ")
                                        .append("tzid=").append(ids[zidx])
                                        .append(", locale=").append(LOCALES[locidx])
                                        .append(", pattern=").append(PATTERNS[patidx])
                                        .append(", text=").append(text)
                                        .append(", gmt=").append(sdfGMT.format(new Date(testTimes[testidx])))
                                        .append(", time=").append(testTimes[testidx])
                                        .append(", restime=").append(restime)
                                        .append(", diff=").append(restime - testTimes[testidx]);
                                    if (expectedRoundTrip[testidx]) {
                                        errln("FAIL: " + msg.toString());
                                    } else if (REALLY_VERBOSE) {
                                        logln(msg.toString());
                                    }
                                }
                            } catch (ParseException pe) {
                                errln("FAIL: " + pe.getMessage());
                            }
                            times[patidx] += System.currentTimeMillis() - timer;
                        }
                        tzt = btz.getNextTransition(t, false);
                        if (tzt == null) {
                            break;
                        }
                        if (middle) {
                            // Test the date in the middle of two transitions.

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                boolean useStandard = false;
                if (cal.get(Calendar.DST_OFFSET) == 0) {
                    useStandard = true;
                    // Check if the zone actually uses daylight saving time around the time
                    if (tz instanceof BasicTimeZone) {
                        BasicTimeZone btz = (BasicTimeZone)tz;
                        TimeZoneTransition before = btz.getPreviousTransition(time, true);
                        if (before != null
                                && (time - before.getTime() < DST_CHECK_RANGE)
                                && before.getFrom().getDSTSavings() != 0) {
                            useStandard = false;
                        } else {
                            TimeZoneTransition after = btz.getNextTransition(time, false);
                            if (after != null
                                    && (after.getTime() - time < DST_CHECK_RANGE)
                                    && after.getTo().getDSTSavings() != 0) {
                                useStandard = false;
                            }

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com.ibm.icu.dev.test.timezone.TimeZoneRuleTest

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