checkJiraCustomFieldValueChanged.java

protected boolean fieldWasChanged(String fieldName, IssueEvent issueEvent, String fieldValue) throws GenericEntityException {
		boolean result = false;

		List<GenericValue> changeItemList = issueEvent.getChangeLog().getRelated("ChildChangeItem");

		Iterator<GenericValue> changeItemListIterator = changeItemList.iterator();
		while (changeItemListIterator.hasNext()) {
			GenericValue changeItem = (GenericValue) changeItemListIterator.next();
			String currentFieldName = changeItem.get("field").toString();
			if (currentFieldName.equals(fieldName)) // Name of custom field.
			{
				Object oldValue = changeItem.get("oldstring");
				Object newValue = changeItem.get("newstring");
				if (oldValue!= null && newValue != null){
					if (!oldValue.equals(newValue) && newValue.equals(fieldValue)) result = true;
					break;
				}else if (oldValue == null && newValue != null) {
					if (newValue.equals(fieldValue)) result = true;
					break;
				}
			}
		}
		return result;
	}