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// This Source Code is in the Public Domain per: http://litesoft.org/License.txt package org.litesoft.core.simpletypes.temporal; import java.util.*; import org.litesoft.core.*; import org.litesoft.core.simpletypes.temporal.nonpublic.*; /** * A Simple date that acts as a proxy for a java.util.Date (burying the depricated method use) providing * varying levels of resolution based on the Format String (which supports formatting similar to SimpledateFormat). * <p/> * <pre> * y Year - YY (1996 becomes 96), * otherwise it is the complete Year, eg: 1996, 2001, 10050. * M Month - M generates no leading 0 months as numbers, * MM produces 2 digit month numbers, * MMM produces 3 letter month abbreviated form, * MMMM (4 or more) produces the full form. * d Day - d generates no leading 0 day of month as numbers, * dd produces 2 digit day of month numbers. * </pre> */ public final class SimpleDate extends DateFormatControl<SimpleDate> implements YMDaccessor, SQLdateable { private int mYear, mMonth, mDay; /** * @deprecated - for Serialization */ protected SimpleDate() { } private SimpleDate( String pFormat ) { super( pFormat ); } public SimpleDate( String pFormat, int pYear ) throws IllegalArgumentException { this( pFormat ); noMonthProvided(); noDayProvided(); setYear( pYear ); } public SimpleDate( String pFormat, int pYear, int pMonth ) throws IllegalArgumentException { this( pFormat ); noDayProvided(); setYearAndMonth( pYear, pMonth ); } public SimpleDate( String pFormat, int pYear, int pMonth, int pDay ) throws IllegalArgumentException { this( pFormat ); setDate( pYear, pMonth, pDay ); } public SimpleDate( int pYear, int pMonth, int pDay ) throws IllegalArgumentException { this( DEFAULT_DATE_FORMAT, pYear, pMonth, pDay ); } public SimpleDate( String pFormat, Date pDate ) throws IllegalArgumentException { this( pFormat ); setDate( pDate ); } public SimpleDate( Date pDate ) throws IllegalArgumentException { this( DEFAULT_DATE_FORMAT, pDate ); } public SimpleDate( String pFormat, SimpleDate pDate ) throws IllegalArgumentException { this( pFormat ); setDate( pDate ); } public SimpleDate( String pFormat, UtilDateAdaptor pDate ) throws IllegalArgumentException { this( pFormat ); setDate( pDate ); } public SimpleDate copy() { return new SimpleDate( getFormat(), this ); } @Override public boolean isValidToMonth() { return getDateRes().isValidToMonth(); } @Override public boolean isValidToDay() { return getDateRes().isValidToDay(); } @Override public int getYear() { return mYear; } /** * @return 0 if not ValidToMonth, otherwise 1-12 */ @Override public int getMonth() { return mMonth; } /** * @return 0 if not ValidToDay, otherwise 1-31 */ @Override public int getDay() { return mDay; } public UtilDateAdaptor getUtilDateAdaptor() { return new UtilDateAdaptor( mYear, mMonth, mDay ); } public Date getDate() { return getUtilDateAdaptor().getDate(); } public void setDate( UtilDateAdaptor pDate ) { if ( pDate == null ) { throw new IllegalArgumentException( "Date was null" ); } setDateToResolution( pDate, getDateRes() ); } public void setDate( Date pDate ) { if ( pDate == null ) { throw new IllegalArgumentException( "Date was null" ); } setDateToResolution( new UtilDateAdaptor( pDate, 0 ), DateRes.ToDAY ); } public void setDate( SimpleDate pDate ) throws IllegalArgumentException { if ( pDate == null ) { throw new IllegalArgumentException( "Date was null" ); } setDateToResolution( pDate, pDate.getDateRes() ); } private void setDateToResolution( YMDaccessor pDate, DateRes pDateRes ) throws IllegalArgumentException { int dYear = pDate.getYear(); int dMonth = mMonth; int dDay = mDay; switch ( pDateRes.getIndex() ) { case DateRes.DAYindex: dDay = pDate.getDay(); // Fall thru case DateRes.MONTHindex: dMonth = pDate.getMonth(); // Fall thru default: break; } if ( isValidToDay() ) { setDate( dYear, dMonth, dDay ); } else if ( isValidToMonth() ) { setYearAndMonth( dYear, dMonth ); } else { setYear( dYear ); } } public void setDate( int pYear, int pMonth, int pDay ) throws IllegalArgumentException { monthProvided( pMonth ); dayProvided( pDay ); validate( pYear, pMonth, pDay ); mYear = pYear; mMonth = pMonth; mDay = pDay; } public void setYearAndMonth( int pYear, int pMonth ) throws IllegalArgumentException { monthProvided( pMonth ); validate( pYear, pMonth, mDay ); mYear = pYear; mMonth = pMonth; } public void setMonthAndDay( int pMonth, int pDay ) throws IllegalArgumentException { monthProvided( pMonth ); dayProvided( pDay ); validate( mYear, pMonth, pDay ); mMonth = pMonth; mDay = pDay; } public void setYear( int pYear ) throws IllegalArgumentException { validate( pYear, mMonth, mDay ); mYear = pYear; } public void setMonth( int pMonth ) throws IllegalArgumentException { monthProvided( pMonth ); validate( mYear, pMonth, mDay ); mMonth = pMonth; } public void setDay( int pDay ) throws IllegalArgumentException { dayProvided( pDay ); validate( mYear, mMonth, pDay ); mDay = pDay; } /** * if after add pYears if was LeapDay and can not be LeapDay will be 1Mar. */ public void addYears( int pYears ) { if ( pYears != 0 ) { LLadjustYears( mYear + pYears, true ); } } /** * if after minus pYears if was LeapDay and can not be LeapDay will be 28Feb. */ public void minusYears( int pYears ) { if ( pYears != 0 ) { LLadjustYears( mYear - pYears, false ); } } private void LLadjustYears( int pNewYear, boolean pAdjustForward ) { mYear = pNewYear; LLadjust( pAdjustForward ); } /** * if after add pMonth there are insufficent days in the new month, the date will be set to the 1st of the next month. */ public void addMonths( int pMonths ) throws IllegalArgumentException { validateMonthAdjustable(); if ( pMonths != 0 ) { LLadjustMonths( mMonth + pMonths, true ); } } /** * if after minus pMonth there are insufficent days in the new month, the date will be set to the last day of the target month */ public void minusMonths( int pMonths ) throws IllegalArgumentException { validateMonthAdjustable(); if ( pMonths != 0 ) { LLadjustMonths( mMonth - pMonths, false ); } } private void LLadjustMonths( int pNewMonth, boolean pAdjustForward ) { mMonth = pNewMonth; while ( mMonth > 12 ) { mYear++; mMonth -= 12; } while ( mMonth < 1 ) { mYear--; mMonth += 12; } LLadjust( pAdjustForward ); } private void LLadjust( boolean pAdjustForward ) { if ( isValidToDay() ) // if Not, then any year works with any month { int maxDaysInMonth = daysInMonth( mYear, mMonth ); if ( maxDaysInMonth < mDay ) { mDay = maxDaysInMonth; if ( pAdjustForward ) { LLaddDays( 1 ); } } } } public void addDays( int pDays ) throws IllegalArgumentException { validateDayAdjustable(); if ( pDays < 0 ) { LLminusDays( -pDays ); } else if ( pDays > 0 ) { LLaddDays( pDays ); } } public void minusDays( int pDays ) throws IllegalArgumentException { validateDayAdjustable(); if ( pDays < 0 ) { LLaddDays( -pDays ); } else if ( pDays > 0 ) { LLminusDays( pDays ); } } private void LLaddDays( int pDays ) { mDay += pDays; for ( int maxDaysInMonth; (maxDaysInMonth = daysInMonth( mYear, mMonth )) < mDay; ) { mDay -= maxDaysInMonth; if ( ++mMonth > 12 ) { mMonth = 1; mYear++; } } } private void LLminusDays( int pDays ) { mDay -= pDays; while ( mDay < 1 ) { if ( --mMonth < 1 ) { mMonth = 12; mYear--; } mDay += daysInMonth( mYear, mMonth ); } } /** * Number of days from this to pThem (could be negative). * * @param pThem !null * * @throws IllegalArgumentException if pThem is null or the resolution of either this' or pThem is not to the Day */ public int daysTill( SimpleDate pThem ) throws IllegalArgumentException { validateValidToDay( "daysTill", pThem ); int zThisMinusThem = compareTo( pThem ); if ( zThisMinusThem == 0 ) { return 0; } if ( zThisMinusThem > 0 ) { return -new DaysDiff( pThem ).till( this ); } return new DaysDiff( this ).till( pThem ); } /** * True if this is 'before' pThem. * <p/> * Note: Uses the lesser resolution of pThem or this. * * @param pThem !null * * @throws IllegalArgumentException if pThem is null */ public boolean before( SimpleDate pThem ) throws IllegalArgumentException { return LLbeforeOrAfter( pThem, "before", -1 ); } /** * True if this is 'after' pThem. * <p/> * Note: Uses the lesser resolution of pThem or this. * * @param pThem !null * * @throws IllegalArgumentException if pThem is null */ public boolean after( SimpleDate pThem ) throws IllegalArgumentException { return LLbeforeOrAfter( pThem, "after", 1 ); } private boolean LLbeforeOrAfter( SimpleDate pThem, String pWhat, int pCompareRetValue ) throws IllegalArgumentException { undefinedResultIfNull( pWhat, pThem ); if ( (this.mYear == pThem.mYear) && this.isValidToMonth() && pThem.isValidToMonth() ) { if ( (this.mMonth == pThem.mMonth) && this.isValidToDay() && pThem.isValidToDay() ) { return pCompareRetValue == compare( this.mDay, pThem.mDay ); } return pCompareRetValue == compare( this.mMonth, pThem.mMonth ); } return pCompareRetValue == compare( this.mYear, pThem.mYear ); } /** * Number of days from this to pThem (could be negative). * <p/> * Note: Treats pThem as if its resolution is to the Day. * * @param pThem !null * * @throws IllegalArgumentException if pThem is null or this' resolution is not to the Day */ public int daysTill( Date pThem ) throws IllegalArgumentException { undefinedResultIfNull( "daysTill", pThem ); return daysTill( new SimpleDate( getFormat(), pThem ) ); } /** * True if this is 'after' pThem. * <p/> * Note: Treats pThem as if its resolution is the same as this' resolution. * * @param pThem !null * * @throws IllegalArgumentException if pThem is null */ public boolean after( Date pThem ) throws IllegalArgumentException { undefinedResultIfNull( "after", pThem ); return after( new SimpleDate( getFormat(), pThem ) ); } /** * True if this is 'before' pThem. * <p/> * Note: Treats pThem as if its resolution is the same as this' resolution. * * @param pThem !null * * @throws IllegalArgumentException if pThem is null */ public boolean before( Date pThem ) throws IllegalArgumentException { undefinedResultIfNull( "before", pThem ); return before( new SimpleDate( getFormat(), pThem ) ); } @Override public boolean equals( Object o ) { return (this == o) || // ((o instanceof SimpleDate) && equals( (SimpleDate) o )) || ((o instanceof Date) && equals( (Date) o )); } public boolean equals( Date pDate ) { return (pDate != null) && equals( new SimpleDate( getFormat(), pDate ) ); } public boolean equals( SimpleDate them ) { return (this == them) || // ((them != null) // && equal( this.mYear, them.mYear ) // && equal( this.mMonth, them.mMonth ) // && equal( this.mDay, them.mDay ) // ); } @Override public int hashCode() { return hashCodeEm( calcHashCode( mYear ), // calcHashCode( mMonth ), // calcHashCode( mDay ) ); } @Override public int compareTo( SimpleDate them ) { return compareEm( compare( this.mYear, them.mYear ), // compare( this.mMonth, them.mMonth ), // compare( this.mDay, them.mDay ) ); } public String toString( SimpleDate pDate ) { return (pDate != null) ? pDate.toString() : null; } @Override public String toString() { StringBuilder sb = new StringBuilder(); Chunk[] chunks = getToStringChunks( this ); for ( Chunk chunk : chunks ) { sb.append( chunk ); } return sb.toString(); } public String toYMD() { return toYMD( this ); } public static String toYMD( SimpleDate pFromYMD ) { if ( pFromYMD == null ) { return null; } StringBuilder sb = new StringBuilder(); sb.append( pFromYMD.getYear() ); if ( pFromYMD.isValidToMonth() ) { sb.append( '/' ).append( new MM_Chunk( pFromYMD ) ); if ( pFromYMD.isValidToDay() ) { sb.append( '/' ).append( new dd_Chunk( pFromYMD ) ); } } return sb.toString(); } public static SimpleDate fromYMD( String pFormat, String pToYMD ) throws IllegalArgumentException { if ( pToYMD == null ) { return null; } String[] parts = SimpleParser.parse( pToYMD, "//", 1 ); switch ( parts.length ) { case 1: return new SimpleDate( pFormat, // parseInt( parts[0], "Year", pToYMD ) ); case 2: return new SimpleDate( pFormat, // parseInt( parts[0], "Year", pToYMD ), // parseInt( parts[1], "Month", pToYMD ) ); case 3: return new SimpleDate( pFormat, // parseInt( parts[0], "Year", pToYMD ), // parseInt( parts[1], "Month", pToYMD ), // parseInt( parts[2], "Day", pToYMD ) ); default: throw new IllegalStateException( "parts.length = " + parts.length ); } } private static class DaysDiff { private int mYear, mMonth, mDay, mDiff = 0; public DaysDiff( YMDaccessor pYMDaccessor ) { mYear = pYMDaccessor.getYear(); mMonth = pYMDaccessor.getMonth(); mDay = pYMDaccessor.getDay(); } public int till( YMDaccessor pThem ) // !null and is in our future { if ( mYear != pThem.getYear() ) { // advance to 1st of the year do { advanceTo1stOfNextMonth(); } while ( mMonth != 1 ); for (; mYear < pThem.getYear(); mYear++ ) { mDiff += isLeapYear( mYear ) ? 366 : 365; } } while ( mMonth < pThem.getMonth() ) { advanceTo1stOfNextMonth(); } return mDiff + (pThem.getDay() - mDay); } private void advanceTo1stOfNextMonth() { int zDaysInMonth = daysInMonth( mYear, mMonth ); mDiff += zDaysInMonth - (mDay - 1); mDay = 1; if ( ++mMonth > 12 ) { mMonth = 1; mYear++; } } } protected void validateMonthAdjustable() throws IllegalArgumentException { if ( !isValidToMonth() ) { throw doesNotContain( DateRes.ToMONTH, ", but Month adjustment attempted" ); } } protected void validateDayAdjustable() throws IllegalArgumentException { if ( !isValidToDay() ) { throw doesNotContain( DateRes.ToDAY, ", but Day adjustment attempted" ); } } private void validateValidToDay( String pWhat, SimpleDate pThem ) throws IllegalArgumentException { if ( !isValidToDay() ) { throw doesNotContain( DateRes.ToDAY, ", but " + pWhat + " attempted" ); } undefinedResultIfNull( pWhat, pThem ); if ( !pThem.isValidToDay() ) { throw new IllegalArgumentException( "Parameter to " + pWhat + " does NOT have Day resolution" ); } } @Override public Object toSQLvalue() { return new java.sql.Date( getDate().getTime() ); } } |