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implement nano date part

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This commit is contained in:
Jacky 2018-05-02 22:02:35 -04:00
parent 34c46111ea
commit 7b857a4b24
1 changed files with 50 additions and 4 deletions
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54
main/src/com/google/refine/expr/functions/date/DatePart.java
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@ -36,6 +36,12 @@ package com.google.refine.expr.functions.date;
import java.util.Calendar;
import java.util.Date;
import java.util.Properties;
import java.util.TimeZone;
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.OffsetDateTime;
import java.time.temporal.TemporalField;
import java.time.temporal.WeekFields;
import org.json.JSONException;
import org.json.JSONWriter;
@ -49,21 +55,61 @@ public class DatePart implements Function {
@Override
public Object call(Properties bindings, Object[] args) {
if (args.length == 2 &&
args[0] != null && (args[0] instanceof Calendar || args[0] instanceof Date) &&
args[0] != null && (args[0] instanceof Calendar || args[0] instanceof Date || args[0] instanceof OffsetDateTime) &&
args[1] != null && args[1] instanceof String) {
String part = (String) args[1];
if (args[0] instanceof Calendar) {
return getPart((Calendar) args[0], part);
} else {
Calendar c = Calendar.getInstance();
} else if (args[0] instanceof Date) {
Calendar c = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
c.setTime((Date) args[0]);
return getPart(c, part);
} else {
return getPart((OffsetDateTime) args[0], part);
}
}
return new EvalError(ControlFunctionRegistry.getFunctionName(this) + " expects a date and a string");
}
private Object getPart(OffsetDateTime offsetDateTime, String part) {
if ("hours".equals(part) || "hour".equals(part) || "h".equals(part)) {
return offsetDateTime.getHour();
} else if ("minutes".equals(part) || "minute".equals(part) || "min".equals(part)) { // avoid 'm' to avoid confusion with month
return offsetDateTime.getMinute();
} else if ("seconds".equals(part) || "sec".equals(part) || "s".equals(part)) {
return offsetDateTime.getSecond();
} else if ("milliseconds".equals(part) || "ms".equals(part) || "S".equals(part)) {
return Math.round(offsetDateTime.getNano() / 1000);
} else if ("nanos".equals(part) || "nano".equals(part) || "n".equals(part)) {
// JSR-310 is based on nanoseconds, not milliseconds.
return offsetDateTime.getNano();
} else if ("years".equals(part) || "year".equals(part)) {
return offsetDateTime.getYear();
} else if ("months".equals(part) || "month".equals(part)) { // avoid 'm' to avoid confusion with minute
return offsetDateTime.getMonth().getValue();
} else if ("weeks".equals(part) || "week".equals(part) || "w".equals(part)) {
return getWeekOfMonth(offsetDateTime);
} else if ("days".equals(part) || "day".equals(part) || "d".equals(part)) {
return offsetDateTime.getDayOfMonth();
} else if ("weekday".equals(part)) {
return offsetDateTime.getDayOfWeek().name();
} else if ("time".equals(part)) { // get Time In Millis
return offsetDateTime.toInstant().toEpochMilli();
} else {
return new EvalError("Date unit '" + part + "' not recognized.");
}
}
private int getWeekOfMonth(OffsetDateTime offsetDateTime) {
LocalDate date = offsetDateTime.toLocalDate();
DayOfWeek firstDayOfWeek = DayOfWeek.SUNDAY;
int minDays = 1;
WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
TemporalField womField = week.weekOfMonth();
return date.get(womField);
}
static private String[] s_daysOfWeek = new String[] {
"Saturday", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
};