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/**
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
* specific language governing rights and limitations under the License.
*
* The Original Code is "CommonDT.java". Description:
* "Note: The class description below has been excerpted from the Hl7 2.4 documentation"
*
* The Initial Developer of the Original Code is University Health Network. Copyright (C)
* 2001. All Rights Reserved.
*
* Contributor(s): ______________________________________.
*
* Alternatively, the contents of this file may be used under the terms of the
* GNU General Public License (the �GPL�), in which case the provisions of the GPL are
* applicable instead of those above. If you wish to allow use of your version of this
* file only under the terms of the GPL and not to allow others to use your version
* of this file under the MPL, indicate your decision by deleting the provisions above
* and replace them with the notice and other provisions required by the GPL License.
* If you do not delete the provisions above, a recipient may use your version of
* this file under either the MPL or the GPL.
*
*/
package ca.uhn.hl7v2.model.primitive;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.io.Serializable;
import ca.uhn.hl7v2.model.DataTypeException;
import ca.uhn.hl7v2.model.DataTypeUtil;
/**
* This class contains functionality used by the DT class
* in the version 2.3.0, 2.3.1, and 2.4 packages
*
* Note: The class description below has been excerpted from the Hl7 2.4 documentation. Sectional
* references made below also refer to the same documentation.
*
* Format: YYYY[MM[DD]]
* In prior versions of HL7, this data type was always specified to be in the format YYYYMMDD. In the current and future
* versions, the precision of a date may be expressed by limiting the number of digits used with the format specification
* YYYY[MM[DD]]. Thus, YYYY is used to specify a precision of "year," YYYYMM specifies a precision of "month,"
* and YYYYMMDD specifies a precision of "day."
* By site-specific agreement, YYYYMMDD may be used where backward compatibility must be maintained.
* Examples: |19880704| |199503|
* @author Neal Acharya
*/
@SuppressWarnings("serial")
public class CommonDT implements Serializable {
private String value;
private int year;
private int month;
private int day;
/**
* Constructs a DT datatype with fields initialzed to zero and value initialized
* to null.
*/
public CommonDT() {
//initialize all DT fields
value = null;
year = 0;
month = 0;
day = 0;
} //end constructor
/**
* Constructs a DT object with the given value.
* The stored value will be in the following
* format YYYY[MM[DD]].
*/
public CommonDT(String val) throws DataTypeException {
this.setValue(val);
} //end constructor
/**
* Convenience setter which sets the value using a {@link Calendar} object. Passing in null clears any existing value.
*
* Note: Sets fields using maximum possible precision
*
* @param theCalendar The calendar object from which to retrieve values
* @since 1.1
*/
public void setValue(Calendar theCalendar) throws DataTypeException {
if (theCalendar == null) {
setValue((String)null);
return;
}
int yr = theCalendar.get(Calendar.YEAR);
int mnth = theCalendar.get(Calendar.MONTH) + 1;
int dy = theCalendar.get(Calendar.DATE);
setYearMonthDayPrecision(yr, mnth, dy);
}
/**
* Convenience setter which sets the value using a {@link Date} object. Passing in null clears any existing value.
*
* Note: Sets fields using maximum possible precision
*
* @param theDate The date object from which to retrieve values
* @since 1.1
*/
public void setValue(Date theDate) throws DataTypeException {
if (theDate == null) {
setValue((String)null);
return;
}
Calendar calendar = Calendar.getInstance();
calendar.setTime(theDate);
setValue(calendar);
}
/**
* Return the value as a calendar object
* @since 1.1
*/
public Calendar getValueAsCalendar() {
Calendar retVal = Calendar.getInstance();
retVal.set(Calendar.DATE, getDay());
retVal.set(Calendar.MONTH, getMonth() - 1);
retVal.set(Calendar.YEAR, getYear());
// Truncate
retVal.set(Calendar.HOUR_OF_DAY, 0);
retVal.set(Calendar.MINUTE, 0);
retVal.set(Calendar.SECOND, 0);
retVal.set(Calendar.MILLISECOND, 0);
return retVal;
}
/**
* Return the value as a date object
* @since 1.1
*/
public Date getValueAsDate() {
return getValueAsCalendar().getTime();
}
/**
* This method takes in a string HL7 date value and performs validations
* then sets the value field. The stored value will be in the following
* format YYYY[MM[DD]]. Passing in null clears any existing value.
*
*/
public void setValue(String val) throws DataTypeException {
if (val != null && !val.equals("") && !val.equals("\"\"")){
try {
GregorianCalendar cal = new GregorianCalendar();
cal.clear();
cal.setLenient(false);
//check the length, must be either four, six, or eight digits
if ((val.length() != 4) && (val.length() != 6) && (val.length() != 8)) {
String msg =
"The length of the DT datatype value does not conform to an allowable"
+ " format. Format should conform to YYYY[MM[DD]]";
DataTypeException e = new DataTypeException(msg);
throw e;
}
if (val.length() >= 4) {
//extract the year from the input value
int yrInt = Integer.parseInt(val.substring(0, 4));
//check to see if the year is valid by creating a Gregorian calendar object with
//this value. If an error occurs then processing will stop in this try block
cal.set(yrInt, 0, 1);
cal.getTime(); //for error detection
year = yrInt;
}
if (val.length() >= 6) {
//extract the month from the input value
int mnthInt = Integer.parseInt(val.substring(4, 6));
//check to see if the month is valid by creating a Gregorian calendar object with
//this value. If an error occurs then processing will stop in this try block
cal.set(year, mnthInt - 1, 1);
cal.getTime(); //for error detection
month = mnthInt;
}
if (val.length() == 8) {
//extract the day from the input value
int dayInt = Integer.parseInt(val.substring(6, 8));
//check to see if the day is valid by creating a Gregorian calendar object with
//the year/month/day combination. If an error occurs then processing will stop
// in this try block
cal.set(year, month - 1, dayInt);
cal.getTime(); //for error detection
day = dayInt;
}
//validations are complete now store the input value into the private value field
value = val;
} //end try
catch (DataTypeException e) {
throw e;
} //end catch
catch (Exception e) {
throw new DataTypeException( e );
} //end catch
} //end if
else {
//set the private value field to null or empty space.
value = val;
} //end else
} //end method
/**
* This method takes in an integer value for the year and performs validations,
* it then sets the value field formatted as an HL7 date.
* value with year precision (YYYY)
*/
public void setYearPrecision(int yr) throws DataTypeException {
try {
GregorianCalendar cal = new GregorianCalendar();
cal.clear();
cal.setLenient(false);
//ensure that the year field is four digits long
if (Integer.toString(yr).length() != 4) {
String msg = "The input year value must be four digits long";
DataTypeException e = new DataTypeException(msg);
throw e;
}
//check is input year is valid
//GregorianCalendar cal = new GregorianCalendar(yr,0,1);
cal.set(yr, 0, 1);
cal.getTime(); //for error detection
year = yr;
month = 0;
day = 0;
value = Integer.toString(yr);
} //end try
catch (DataTypeException e) {
throw e;
} //end catch
catch (Exception e) {
throw new DataTypeException( e );
} //end catch
} //end method
/**
* This method takes in integer values for the year and month and performs validations,
* it then sets the value field formatted as an HL7 date
* value with year&month precision (YYYYMM).
* Note: The first month = 1 = January.
*/
public void setYearMonthPrecision(int yr, int mnth) throws DataTypeException {
try {
GregorianCalendar cal = new GregorianCalendar();
cal.clear();
cal.setLenient(false);
//ensure that the year field is four digits long
if (Integer.toString(yr).length() != 4) {
String msg = "The input year value must be four digits long";
DataTypeException e = new DataTypeException(msg);
throw e;
}
//validate the input month
//GregorianCalendar cal = new GregorianCalendar(yr,(mnth-1),1);
cal.set(yr, (mnth - 1), 1);
cal.getTime(); //for error detection
year = yr;
month = mnth;
day = 0;
value = Integer.toString(yr) + DataTypeUtil.preAppendZeroes(mnth, 2);
}
catch (DataTypeException e) {
throw e;
} //end catch
catch (Exception e) {
throw new DataTypeException( e );
} //end catch
} //end method
/**
* This method takes in integer values for the year and month and day
* and performs validations, it then sets the value in the object
* formatted as an HL7 date value with year&month&day precision (YYYYMMDD).
*/
public void setYearMonthDayPrecision(int yr, int mnth, int dy) throws DataTypeException {
try {
GregorianCalendar cal = new GregorianCalendar();
cal.clear();
cal.setLenient(false);
//ensure that the year field is four digits long
if (Integer.toString(yr).length() != 4) {
String msg = "The input year value must be four digits long";
DataTypeException e = new DataTypeException(msg);
throw e;
}
//validate the input month/day combination
cal.set(yr, (mnth - 1), dy);
cal.getTime(); //for error detection
year = yr;
month = mnth;
day = dy;
value = Integer.toString(yr) + DataTypeUtil.preAppendZeroes(mnth, 2) + DataTypeUtil.preAppendZeroes(dy, 2);
}
catch (DataTypeException e) {
throw e;
} //end catch
catch (Exception e) {
throw new DataTypeException( e );
} //end catch
} //end method
/**
* Returns the HL7 DT string value.
*/
public String getValue() {
return value;
} //end method
/**
* Returns the year as an integer.
*/
public int getYear() {
return year;
} //end method
/**
* Returns the month as an integer.
*/
public int getMonth() {
return month;
} //end method
/**
* Returns the day as an integer.
*/
public int getDay() {
return day;
} //end method
/**
* Returns a string value representing the input Gregorian Calendar object in
* an Hl7 Date Format.
*/
public static String toHl7DTFormat(GregorianCalendar cal) throws DataTypeException {
String val = "";
try {
//set the input cal object so that it can report errors
//on it's value
cal.setLenient(false);
int calYear = cal.get(GregorianCalendar.YEAR);
int calMonth = cal.get(GregorianCalendar.MONTH) + 1;
int calDay = cal.get(GregorianCalendar.DAY_OF_MONTH);
CommonDT dt = new CommonDT();
dt.setYearMonthDayPrecision(calYear, calMonth, calDay);
val = dt.getValue();
} //end try
catch (DataTypeException e) {
throw e;
} //end catch
catch (Exception e) {
throw new DataTypeException( e );
} //end catch
return val;
} //end method
} //end class
