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The Open Source version of the IBM Toolbox for Java
///////////////////////////////////////////////////////////////////////////////
//
// JTOpen (IBM Toolbox for Java - OSS version)
//
// Filename: DateValueMap.java
//
// The source code contained herein is licensed under the IBM Public License
// Version 1.0, which has been approved by the Open Source Initiative.
// Copyright (C) 1997-2000 International Business Machines Corporation and
// others. All rights reserved.
//
///////////////////////////////////////////////////////////////////////////////
package com.ibm.as400.resource;
import com.ibm.as400.access.AS400;
import com.ibm.as400.access.AS400Calendar;
import com.ibm.as400.access.DateTimeConverter;
import com.ibm.as400.access.ExtendedIllegalArgumentException;
import com.ibm.as400.access.ExtendedIllegalStateException;
import com.ibm.as400.access.Trace;
import java.io.Serializable;
import java.util.Calendar;
import java.util.Date;
/**
The DateValueMap class maps between a logical Date value
and a variety of date formats for a physical value.
**/
class DateValueMap
implements ValueMap, Serializable
{
private static final String copyright = "Copyright (C) 1997-2000 International Business Machines Corporation and others.";
static final long serialVersionUID = 4L;
// Date formats. // physical <--> logical
public static final int FORMAT_6 = 6; // HHMMSS <--> Date
public static final int FORMAT_7 = 7; // CYYMMDD <--> Date
public static final int FORMAT_13 = 13; // CYYMMDDHHMMSS <--> Date
public static final int FORMAT_DTS = 99; // System *DTS (date timestamp) format <--> Date
// Private data.
static final Date NO_DATE = new Date(0);
private static final String DTS = "*DTS";
private static final String HHMMSS_ZEROS = "000000";
private static final String CYYMMDD_ZEROS = "0000000";
private int format_ = -1;
/**
Constructs a DateValueMap object.
@param format The format.
**/
public DateValueMap(int format)
{
if ((format != FORMAT_6)
&& (format != FORMAT_7)
&& (format != FORMAT_13)
&& (format != FORMAT_DTS))
throw new ExtendedIllegalArgumentException("format", ExtendedIllegalArgumentException.PARAMETER_VALUE_NOT_VALID);
format_ = format;
}
/**
Maps from a logical value to a physical value.
@param logicalValue The logical value.
@param system The system.
@return The physical value.
**/
public Object ltop(Object logicalValue, AS400 system)
{
if (logicalValue == null)
throw new NullPointerException("logicalValue");
switch(format_) {
case FORMAT_13:
return dateToString13((Date)logicalValue);
case FORMAT_7:
return dateToString13((Date)logicalValue).substring(0,7);
case FORMAT_6:
return dateToString13((Date)logicalValue).substring(7);
case FORMAT_DTS:
if (system == null)
throw new NullPointerException("system");
try {
DateTimeConverter converter = new DateTimeConverter(system);
return converter.convert((Date)logicalValue, DTS);
}
catch(Exception e) {
throw new ExtendedIllegalArgumentException("logicalValue", ExtendedIllegalArgumentException.PARAMETER_VALUE_NOT_VALID);
}
}
// If the format specified is bad...
throw new ExtendedIllegalStateException("format", ExtendedIllegalStateException.UNKNOWN);
}
/**
Maps from a physical value to a logical value.
@param physicalValue The physical value.
@param system The system.
@return The logical value.
**/
public Object ptol(Object physicalValue, AS400 system)
{
// Validate the physical value.
if (physicalValue == null)
throw new NullPointerException("physicalValue");
switch(format_) {
case FORMAT_13:
return string13ToDate((String)physicalValue);
case FORMAT_7:
return string13ToDate((String)physicalValue + HHMMSS_ZEROS);
case FORMAT_6:
return string13ToDate(CYYMMDD_ZEROS + (String)physicalValue);
case FORMAT_DTS:
if (system == null)
throw new NullPointerException("system");
try {
byte[] asBytes = (byte[])physicalValue;
// If the first byte is an EBCDIC space, assume the rest
// are and specify a default date.
if ((asBytes[0] == 0x40) || (asBytes[0] == 0x00)) // @A1C
return NO_DATE;
DateTimeConverter converter = new DateTimeConverter(system);
return converter.convert((byte[])physicalValue, DTS);
}
catch(Exception e) {
if (Trace.isTraceOn())
Trace.log(Trace.ERROR, "Error converting date from DTS format", e);
throw new ExtendedIllegalArgumentException("physicalValue", ExtendedIllegalArgumentException.PARAMETER_VALUE_NOT_VALID);
}
}
throw new ExtendedIllegalArgumentException("physicalValue", ExtendedIllegalArgumentException.PARAMETER_VALUE_NOT_VALID);
}
/**
Converts a Date to a String in the format CYYMMDDHHMMSS.
@param date The Date.
@return The String.
**/
private static String dateToString13(Date date)
{
Calendar calendar = AS400Calendar.getGregorianInstance();
calendar.setTime(date);
StringBuffer buffer13 = new StringBuffer(13);
int year13 = calendar.get(Calendar.YEAR);
buffer13.append((year13 < 2000) ? '0' : '1');
buffer13.append(twoDigits(year13 % 100));
buffer13.append(twoDigits(calendar.get(Calendar.MONTH) + 1));
buffer13.append(twoDigits(calendar.get(Calendar.DAY_OF_MONTH)));
buffer13.append(twoDigits(calendar.get(Calendar.HOUR_OF_DAY)));
buffer13.append(twoDigits(calendar.get(Calendar.MINUTE)));
buffer13.append(twoDigits(calendar.get(Calendar.SECOND)));
return buffer13.toString();
}
/**
Converts a String in the format CYYMMDDHHMMSS to a Date
@param string13 The String.
@return The Date.
**/
private static Date string13ToDate(String string13)
{
int length = string13.length();
Calendar calendar = AS400Calendar.getGregorianInstance();
// If the date is all blanks or if it is a special
// value, then return a date with all zeros.
if (length == 0)
return NO_DATE;
else if (string13.charAt(0) == '*')
return NO_DATE;
int century = Integer.parseInt(string13.substring(0,1));
int year = Integer.parseInt(string13.substring(1,3));
int month = Integer.parseInt(string13.substring(3,5));
int day = Integer.parseInt(string13.substring(5,7));
int hour = Integer.parseInt(string13.substring(7,9));
int minute = Integer.parseInt(string13.substring(9,11));
int second = Integer.parseInt(string13.substring(11,13));
calendar.set(Calendar.YEAR, year + ((century == 0) ? 1900 : 2000));
calendar.set(Calendar.MONTH, month - 1);
calendar.set(Calendar.DAY_OF_MONTH, day);
calendar.set(Calendar.HOUR_OF_DAY, hour);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, second);
calendar.set(Calendar.MILLISECOND, 0); // @A1A
return calendar.getTime();
}
/**
Returns a 2 digit String representation of the value.
The value will be 0-padded on the left if needed.
@param value The value.
@return The 2 digit String representation.
**/
private static String twoDigits(int value)
{
if (value > 99)
throw new ExtendedIllegalArgumentException("value", ExtendedIllegalArgumentException.PARAMETER_VALUE_NOT_VALID);
String full = "00" + Integer.toString(value);
return full.substring(full.length() - 2);
}
}