How to use

isLinkingEnabled

method

in

com.atlassian.jira.issue.link.IssueLinkManager

if (!issueLinkManager.isLinkingEnabled())

private void validateLinkingEnabled(final I18nHelper i18n, final ErrorCollection errors)
{
  if (!issueLinkManager.isLinkingEnabled())
  {
    errors.addErrorMessage(i18n.getText("admin.issuelinking.status", i18n.getText("admin.common.words.disabled")), Reason.FORBIDDEN);
  }
}

public boolean isIssueWithLinks() {
  final MutableIssue issue = getMutableIssue();
  if (issueLinkManager.isLinkingEnabled()) {
    //checking if there are any not-subtask issue links (inward or outward)
    return Iterables.any(issueLinkManager.getOutwardLinks(issue.getId()), IssueLinkCopier.isNotSubtaskIssueLink)
        || Iterables.any(issueLinkManager.getInwardLinks(issue.getId()), IssueLinkCopier.isNotSubtaskIssueLink)
        || !remoteIssueLinkManager.getRemoteIssueLinksForIssue(issue).isEmpty();
  }
  return false;
}

private void validateLinkingEnabled(final ApplicationUser user, final ErrorCollection errors)
{
  final I18nHelper i18n = beanFactory.getInstance(user);
  if (!issueLinkManager.isLinkingEnabled())
  {
    errors.addErrorMessage(i18n.getText("admin.issuelinking.status", i18n.getText("admin.common.words.disabled")), Reason.FORBIDDEN);
  }
}

@Override
public FieldJsonRepresentation getJsonFromIssue(Issue issue, boolean renderedVersionRequired, FieldLayoutItem fieldLayoutItem)
{
  if (!issueLinkManager.isLinkingEnabled())
  {
    return null;
  }
  IssueLinksBeanBuilder builder = issueLinkBeanBuilderFactory.newIssueLinksBeanBuilder(issue);
  return new FieldJsonRepresentation(new JsonData(builder.buildIssueLinks()));
}

if (!issueLinkManager.isLinkingEnabled())

@Nonnull
@Override
public MessageSet validate(final ApplicationUser searcher, @Nonnull final FunctionOperand operand, @Nonnull final TerminalClause terminalClause)
{
  MessageSet messageSet = new MessageSetImpl();
  if (!issueLinkManager.isLinkingEnabled())
  {
    messageSet.addErrorMessage(getI18n().getText("jira.jql.function.issue.linking.disabled", getFunctionName()));
    return messageSet;
  }
  final List<String> args = operand.getArgs();
  final int maxArgSize = DefaultRemoteIssueLinkManager.MAX_GLOBAL_ID_LIST_SIZE_FOR_FIND;
  if (args.size() < 1 || args.size() > maxArgSize)
  {
    messageSet.addErrorMessage(getI18n().getText("jira.jql.function.arg.incorrect.range", getFunctionName(), 1, maxArgSize, args.size())
        + " " + getI18n().getText("jira.jql.function.remote.link.by.global.id.incorrect.usage", getFunctionName()));
    return messageSet;
  }
  return messageSet;
}

private void cloneLinksIfNeeded(Issue clone, Set<Long> originalIssueIdSet) throws CreateException
{
  if (isCloneLinks() && issueLinkManager.isLinkingEnabled())
  {
    Collection<IssueLink> inwardLinks = issueLinkManager.getInwardLinks(originalIssue.getId());
    cloneInwardLinks(clone, originalIssueIdSet, inwardLinks);
    Collection<IssueLink> outwardLinks = issueLinkManager.getOutwardLinks(originalIssue.getId());
    cloneOutwardLinks(clone, originalIssueIdSet, outwardLinks);
    cloneRemoteIssueLinks(clone);
  }
}

public boolean isDisplayCopyLink()
{
  if (issueLinkManager.isLinkingEnabled())
  {
    // See if there are any links to clone
    if (givenIssueHasAnyCopyableLink(getOriginalIssue()))
    {
      return true;
    }
    else
    {
      // See if there are any links to copy on sub-tasks
      if (originalIssueHasSubTask())
      {
        for (Issue subTask : getOriginalIssue().getSubTaskObjects())
        {
          if (givenIssueHasAnyCopyableLink(subTask))
          {
            return true;
          }
        }
      }
    }
  }
  return false;
}

public MessageSet validate(final ApplicationUser searcher, final FunctionOperand operand, final TerminalClause terminalClause)
  if (!issueLinkManager.isLinkingEnabled())

private ConfigurationBean createConfigurationBean(boolean timeTrackingEnabled, Option<TimeTrackingConfigurationBean> timeTrackingConfigurationBean)
{
  return ConfigurationBean.builer()
      .votingEnabled(voteService.isVotingEnabled())
      .watchingEnabled(watcherService.isWatchingEnabled())
      .unassignedIssuesAllowed(applicationProperties.getOption(APKeys.JIRA_OPTION_ALLOWUNASSIGNED))
      .subTasksEnabled(subTaskManager.isSubTasksEnabled())
      .attachmentsEnabled(attachmentManager.attachmentsEnabled())
      .issueLinkingEnabled(issueLinkManager.isLinkingEnabled())
      .timeTrackingEnabled(timeTrackingEnabled)
      .timeTrackingConfiguration(timeTrackingConfigurationBean.getOrNull())
      .build();
}

if (getCopyIssueLinks() && issueLinkManager.isLinkingEnabled()) {
  IssueLinkCopier copier = new IssueLinkCopier(issueLinkManager, remoteIssueLinkManager, proxy, linkType);
  Either<NegativeResponseStatus, SuccessfulResponse> copierResult = copier.copyLocalAndRemoteLinks(issueToCopy, copiedIssue.getIssueKey(), copiedIssue.getIssueId());