Calculate the duration between a date field's current and previous value

Abstract

This code snippet fetches the duration between a date field's current and previous value.

Logic

Check for null values.
Fetch the field history of the date field.
Return the difference between the two dates in Long.

Snippet

import java.text.SimpleDateFormat;
 
Date curDate = issue.get("<Date field>");
if (curDate == null)
  return null;
 
if (issue.getFieldHistory("<Date field>").size() == 0)
    return null;
oldVal = issue.getFieldHistory("<Date field>")[-1].getFrom()
 
if (oldVal==null)
 return null;
 
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date oldDate = sdf.parse(oldVal);
return (curDate.getTime() - oldeDate.getTime())/1000L;

Placeholders

Placeholder	Description	Example

Placeholder	Description	Example
`<Date field>`	Date in context	Due date

Examples

The output of the code snippet is a duration which you could use in a Groovy script, for example, to calculate and display the duration between the current Due date and the last Due date.

import java.text.SimpleDateFormat;
 
Date curDate = issue.get("duedate");
if (curDate == null)
  return null;
 
if (issue.getFieldHistory("duedate").size() == 0)
    return null;
oldVal = issue.getFieldHistory("duedate")[-1].getFrom()
 
if (oldVal==null)
 return null;
 
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date oldDate = sdf.parse(oldVal);
return (curDate.getTime() - oldDate.getTime())/1000L;