How to use

isEmpty

method

in

com.atlassian.jira.issue.customfields.view.CustomFieldParams

@Override
public boolean hasParam(Map parameters)
{
  CustomFieldParams relevantParams = getRelevantParams(parameters);
  return !relevantParams.isEmpty();
}

return ((CustomFieldParams) value).isEmpty();

public Map<String, Option> getValueFromCustomFieldParams(CustomFieldParams relevantParams) throws FieldValidationException
{
  if (relevantParams != null && !relevantParams.isEmpty())
  {
    try
    {
      return getOptionMapFromCustomFieldParams(relevantParams);
    }
    catch (final FieldValidationException e)
    {
      return null;
    }
  }
  else
  {
    return null;
  }
}

@Override
public Set<Label> getValueFromCustomFieldParams(CustomFieldParams customFieldParams) throws FieldValidationException
{
  if (customFieldParams == null || customFieldParams.isEmpty())
  {
    return null;
  }
  final Collection<String> normalParams = (Collection<String>) customFieldParams.getValuesForKey(null); //single field types should not scope their parameters
  if (normalParams == null || normalParams.isEmpty())
  {
    return null;
  }
  return convertStringsToLabels(normalParams);
}

public void populateFromQuery(final ApplicationUser user, final FieldValuesHolder fieldValuesHolder, final Query query, final SearchContext searchContext)
{
  final CustomFieldParams customFieldParams = getParamsFromSearchRequest(user, query, searchContext);
  if (customFieldParams != null && !customFieldParams.isEmpty())
  {
    fieldValuesHolder.put(urlParameterName, customFieldParams);
  }
}

if (!params.isEmpty())

public Clause getSearchClause(final ApplicationUser user, final FieldValuesHolder fieldValuesHolder)
{
  if (fieldValuesHolder.containsKey(urlParameterName))
  {
    CustomFieldParams customFieldParams = (CustomFieldParams) fieldValuesHolder.get(urlParameterName);
    if (customFieldParams != null && !customFieldParams.isEmpty())
    {
      return getClauseFromParams(user, customFieldParams);
    }
  }
  return null;
}

if (!customFieldParams.isEmpty())

public void validateFromParams(CustomFieldParams relevantParams, ErrorCollection errorCollectionToAddTo, FieldConfig config)
  if (relevantParams == null || relevantParams.isEmpty())