tech.tablesaw.splitting.dates.SplitUtils Maven / Gradle / Ivy
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package tech.tablesaw.splitting.dates;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.temporal.ChronoField;
import java.util.function.Function;
import tech.tablesaw.columns.packeddata.PackedLocalDate;
public class SplitUtils {
public static LocalDateSplitter byYear = PackedLocalDate::getYear;
public static LocalDateSplitter byMonth = PackedLocalDate::getMonthValue;
public static LocalDateSplitter byDayOfMonth = PackedLocalDate::getDayOfMonth;
public static LocalDateSplitter byDayOfYear = PackedLocalDate::getDayOfYear;
public static LocalDateSplitter byDayOfWeek = packedLocalDate ->
PackedLocalDate.getDayOfWeek(packedLocalDate).getValue();
public static LocalDateSplitter byQuarter = PackedLocalDate::getQuarter;
public static Function, Object> byWeek = comparable -> {
if (comparable instanceof LocalDate) {
return ((LocalDate) comparable).get(ChronoField.ALIGNED_WEEK_OF_YEAR);
} else if (comparable instanceof LocalDateTime) {
return ((LocalDateTime) comparable).get(ChronoField.ALIGNED_WEEK_OF_YEAR);
} else {
throw new IllegalArgumentException("Date function called on non-date column");
}
};
public static Function, Object> byHour = comparable -> {
if (comparable instanceof LocalDateTime) {
return ((LocalDateTime) comparable).get(ChronoField.HOUR_OF_DAY);
} else {
throw new IllegalArgumentException("Time function called on non-time column");
}
};
public static Function, Object> bySecondOfMinute = comparable -> {
if (comparable instanceof LocalDateTime) {
return ((LocalDateTime) comparable).get(ChronoField.SECOND_OF_MINUTE);
} else {
throw new IllegalArgumentException("Time function called on non-time column");
}
};
public static Function, Object> bySecondOfDay = comparable -> {
if (comparable instanceof LocalDateTime) {
return ((LocalDateTime) comparable).get(ChronoField.SECOND_OF_DAY);
} else {
throw new IllegalArgumentException("Time function called on non-time column");
}
};
public static Function, Object> byMinuteOfHour = comparable -> {
if (comparable instanceof LocalDateTime) {
return ((LocalDateTime) comparable).get(ChronoField.MINUTE_OF_HOUR);
} else {
throw new IllegalArgumentException("Time function called on non-time column");
}
};
public static Function, Object> byMinuteOfDay = comparable -> {
if (comparable instanceof LocalDateTime) {
return ((LocalDateTime) comparable).get(ChronoField.MINUTE_OF_HOUR);
} else {
throw new IllegalArgumentException("Time function called on non-time column");
}
};
/*
BY_QUARTER_AND_YEAR, // 1974-Q1; 1974-Q2; etc.
BY_MONTH_AND_YEAR, // 1974-01; 1974-02; 1974-03; etc.
BY_WEEK_AND_YEAR, // 1956-51; 1956-52;
BY_DAY_AND_YEAR, // 1990-364; 1990-365;
BY_DAY_AND_MONTH, // 12-03
BY_DAY_AND_MONTH_AND_YEAR, // 2003-04-15
BY_DAY_AND_WEEK_AND_YEAR, // 1993-48-6
BY_DAY_AND_WEEK, // 52-1 to 52-7
BY_HOUR_AND_DAY, //
BY_MINUTE_AND_HOUR, // 23-49
*/
}