001    /**
002     * Implements the CFML 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.exp.PageException;
014    import railo.runtime.functions.BIF;
015    import railo.runtime.op.Caster;
016    import railo.runtime.type.dt.DateTime;
017    
018    public final class FirstDayOfMonth extends BIF {
019    
020            private static final long serialVersionUID = 2771139908016254661L;
021    
022            public static double call(PageContext pc , DateTime date) {
023                    return _call(pc, date, pc.getTimeZone());
024            }
025            
026            public static double call(PageContext pc , DateTime date, String strTimezone) throws ExpressionException {
027                    return _call(pc, date, strTimezone==null?pc.getTimeZone():TimeZoneUtil.toTimeZone(strTimezone));
028            }
029            
030            private static double _call(PageContext pc , DateTime date,TimeZone tz) {
031            //synchronized (calendar) {
032                    Calendar calendar=JREDateTimeUtil.getCalendar();
033            calendar.clear();
034            calendar.setTimeZone(tz);   
035                    calendar.setTime(date);   
036                    calendar.set(Calendar.DATE,1);         
037                    return calendar.get(Calendar.DAY_OF_YEAR);
038            //}
039            }
040            
041            @Override
042            public Object invoke(PageContext pc, Object[] args) throws PageException {
043                    if(args.length==1)return call(pc,Caster.toDatetime(args[0],pc.getTimeZone()));
044                    return call(pc,Caster.toDatetime(args[0],pc.getTimeZone()),Caster.toString(args[1]));
045            }
046    }