1de5e7c00e
Replaced gel with grel in other places in the code base while maintaining backward compatibility. Changed layout in expression preview dialog to accommodate long GREL name. git-svn-id: http://google-refine.googlecode.com/svn/trunk@1442 7d457c2a-affb-35e4-300a-418c747d4874
69 lines
2.9 KiB
Java
69 lines
2.9 KiB
Java
package com.google.refine.expr.functions.date;
|
|
|
|
import java.util.Calendar;
|
|
import java.util.Date;
|
|
import java.util.Properties;
|
|
|
|
import org.json.JSONException;
|
|
import org.json.JSONWriter;
|
|
|
|
import com.google.refine.expr.EvalError;
|
|
import com.google.refine.grel.ControlFunctionRegistry;
|
|
import com.google.refine.grel.Function;
|
|
|
|
public class DatePart implements Function {
|
|
|
|
public Object call(Properties bindings, Object[] args) {
|
|
if (args.length == 2 &&
|
|
args[0] != null && (args[0] instanceof Calendar || args[0] instanceof Date) &&
|
|
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();
|
|
c.setTime((Date) args[0]);
|
|
return getPart(c, part);
|
|
}
|
|
}
|
|
return new EvalError(ControlFunctionRegistry.getFunctionName(this) + " expects a date, a number and a string");
|
|
}
|
|
|
|
static private String[] s_daysOfWeek = new String[] {
|
|
"Saturday", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
|
|
};
|
|
|
|
private Object getPart(Calendar c, String part) {
|
|
if ("hours".equals(part) || "hour".equals(part) || "h".equals(part)) {
|
|
return c.get(Calendar.HOUR_OF_DAY);
|
|
} else if ("minutes".equals(part) || "minute".equals(part) || "min".equals(part)) { // avoid 'm' to avoid confusion with month
|
|
return c.get(Calendar.MINUTE);
|
|
} else if ("seconds".equals(part) || "sec".equals(part) || "s".equals(part)) {
|
|
return c.get(Calendar.SECOND);
|
|
} else if ("years".equals(part) || "year".equals(part)) {
|
|
return c.get(Calendar.YEAR);
|
|
} else if ("months".equals(part) || "month".equals(part)) { // avoid 'm' to avoid confusion with minute
|
|
return c.get(Calendar.MONTH) + 1; // ISSUE 115 - people expect January to be 1 not 0
|
|
} else if ("weeks".equals(part) || "week".equals(part) || "w".equals(part)) {
|
|
return c.get(Calendar.WEEK_OF_MONTH);
|
|
} else if ("days".equals(part) || "day".equals(part) || "d".equals(part)) {
|
|
return c.get(Calendar.DAY_OF_MONTH);
|
|
} else if ("weekday".equals(part)) {
|
|
return s_daysOfWeek[c.get(Calendar.DAY_OF_WEEK)];
|
|
} else if ("time".equals(part)) {
|
|
return c.getTimeInMillis();
|
|
} else {
|
|
return new EvalError("Date unit '" + part + "' not recognized.");
|
|
}
|
|
}
|
|
|
|
public void write(JSONWriter writer, Properties options) throws JSONException {
|
|
writer.object();
|
|
writer.key("description"); writer.value("Returns part of a date");
|
|
writer.key("params"); writer.value("date d, string part");
|
|
writer.key("returns"); writer.value("date");
|
|
writer.endObject();
|
|
}
|
|
}
|