Examples of org.joda.time.DateTime.minusDays()

org.joda.time.DateTime.minusDays()
Returns a copy of this datetime minus the specified number of days.
The calculation will do its best to only change the day field retaining the same time of day. However, in certain circumstances, typically daylight savings cutover, it may be necessary to alter the time fields.
In spring an hour is typically removed. If subtracting one day results in the time being within the cutover then the time is adjusted to be within summer time. For example, if the cutover is from 01:59 to 03:00 and the result of this method would have been 02:30, then the result will be adjusted to 03:30.
The following three lines are identical in effect:
```
 DateTime subtracted = dt.minusDays(6); DateTime subtracted = dt.minus(Period.days(6)); DateTime subtracted = dt.withFieldAdded(DurationFieldType.days(), -6); 
```
This datetime instance is immutable and unaffected by this method call. @param days the amount of days to subtract, may be negative @return the new datetime minus the increased days @since 1.1

        for (int i = 0; i < 99; i++) {
            Nicolive nicolinve = new Nicolive();
            nicolinve.setTitle("テスト" + i);
            nicolinve.setDescription(new Text("テスト説明文" + i));
            DateTime datetime = new DateTime(2011, 1, 1, 0, 0, 0, 0);
            datetime = datetime.minusDays(i);
            nicolinve.setOpenTime(datetime.toDate());
            nicolinve.setLink(new Link("http://ryu22e.org/" + i));
            Key key = Datastore.put(nicolinve);
            testDataKeys.add(key);
        }

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        for (int i = 0; i < 99; i++) {
            Nicolive nicolinve = new Nicolive();
            nicolinve.setTitle("テスト" + i);
            nicolinve.setDescription(new Text("テスト説明文" + i));
            DateTime datetime = new DateTime(2011, 1, 1, 0, 0, 0, 0);
            datetime = datetime.minusDays(i);
            nicolinve.setOpenTime(datetime.toDate());
            nicolinve.setLink(new Link("http://ryu22e.org/" + i));
            Key key = Datastore.put(nicolinve);
            testDataKeys.add(key);
        }

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    public void 全文検索用インデックスを作成する() throws Exception {
        assertThat(service, is(notNullValue()));


        // テストデータを作成する。
        DateTime datetime = new DateTime();
        datetime = datetime.minusDays(3);
        Nicolive nicolinve1 = new Nicolive();
        nicolinve1.setTitle("テスト");
        nicolinve1.setDescription(new Text("本日は晴天なり。"));
        nicolinve1.setOpenTime(datetime.toDate());
        nicolinve1.setStartTime(datetime.plusMinutes(10).toDate());

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        DateTime datetime = new DateTime();
        List<NicoliveIndex> indexes = new LinkedList<NicoliveIndex>();
        for (int i = 0; i < 50; i++) {
            NicoliveIndex index = new NicoliveIndex();
            index.setKeyword("テスト");
            index.setOpenTime(datetime.minusDays(i).toDate());
            indexes.add(index);
        }
        testDataKeys.addAll(Datastore.put(indexes));
        service.deleteOldIndex(datetime.minusDays(31).toDate());

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            index.setKeyword("テスト");
            index.setOpenTime(datetime.minusDays(i).toDate());
            indexes.add(index);
        }
        testDataKeys.addAll(Datastore.put(indexes));
        service.deleteOldIndex(datetime.minusDays(31).toDate());


        NicoliveIndexMeta ni = NicoliveIndexMeta.get();
        int count =
                Datastore
                    .query(ni)

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        NicoliveIndexMeta ni = NicoliveIndexMeta.get();
        int count =
                Datastore
                    .query(ni)
                    .filter(
                        ni.openTime.lessThanOrEqual(datetime
                            .minusDays(31)
                            .toDate()))
                    .count();
        assertThat(count, is(0));
    }

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        DateTime datetime = new DateTime();
        List<NicoliveIndex> indexes = new LinkedList<NicoliveIndex>();
        for (int i = 0; i < 1500; i++) {
            NicoliveIndex index = new NicoliveIndex();
            index.setKeyword("テスト");
            index.setOpenTime(datetime.minusDays(i).toDate());
            indexes.add(index);
        }
        testDataKeys.addAll(Datastore.put(indexes));


    }

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        NicoliveIndexMeta ni = NicoliveIndexMeta.get();
        int count =
                Datastore
                    .query(ni)
                    .filter(
                        ni.openTime.lessThanOrEqual(datetime
                            .minusDays(31)
                            .toDate()))
                    .count();
        assertThat(count, is(0));
    }

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        for (int i = 0; i < 99; i++) {
            Nicolive nicolinve = new Nicolive();
            nicolinve.setTitle("テスト" + i);
            nicolinve.setDescription(new Text("テスト説明文" + i));
            DateTime datetime = new DateTime(2011, 1, 1, 0, 0, 0, 0);
            datetime = datetime.minusDays(i);
            nicolinve.setOpenTime(datetime.toDate());
            nicolinve.setLink(new Link("http://ryu22e.org/" + i));
            Key key = Datastore.put(nicolinve);
            testDataKeys.add(key);
            NicoliveIndex nicoliveIndex1 = new NicoliveIndex();

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    public void RSSフィードをiCalendar形式に変換する_該当するデータが存在する() throws Exception {
        assertThat(service, is(notNullValue()));


        CalendarCondition condition = new CalendarCondition();
        DateTime startDate = new DateTime(2011, 1, 1, 0, 0, 0, 0);
        startDate = startDate.minusDays(7);
        condition.setStartDate(startDate.toDate());
        condition.setKeywords(Arrays.asList("テスト", "説明"));


        Calendar calendar = service.getCalendar(condition);
        assertThat(calendar, not(nullValue()));

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