001    /**
002     * Implements the Cold Fusion Function firstdayofmonth
003     */
004    package railo.runtime.functions.dateTime;
005    
006    import java.util.Calendar;
007    import java.util.TimeZone;
008    
009    import railo.commons.date.JREDateTimeUtil;
010    import railo.commons.date.TimeZoneUtil;
011    import railo.runtime.PageContext;
012    import railo.runtime.exp.ExpressionException;
013    import railo.runtime.ext.function.Function;
014    import railo.runtime.type.dt.DateTime;
015    
016    public final class FirstDayOfMonth implements Function {
017            
018            public static double call(PageContext pc , DateTime date) {
019                    return _call(pc, date, pc.getTimeZone());
020            }
021            
022            public static double call(PageContext pc , DateTime date, String strTimezone) throws ExpressionException {
023                    return _call(pc, date, strTimezone==null?pc.getTimeZone():TimeZoneUtil.toTimeZone(strTimezone));
024            }
025            
026            private static double _call(PageContext pc , DateTime date,TimeZone tz) {
027            //synchronized (calendar) {
028                    Calendar calendar=JREDateTimeUtil.getCalendar();
029            calendar.clear();
030            calendar.setTimeZone(tz);   
031                    calendar.setTime(date);   
032                    calendar.set(Calendar.DATE,1);         
033                    return calendar.get(Calendar.DAY_OF_YEAR);
034            //}
035            }
036    }