How to use

isReference

method

in

org.apache.tools.ant.types.TarFileSet

/**
 * @return the group name string.
 */
public String getGroup() {
  if (isReference()) {
    return ((TarFileSet) getCheckedRef()).getGroup();
  }
  return groupName;
}

/**
 * @return the group identifier.
 */
public int getGid() {
  if (isReference()) {
    return ((TarFileSet) getCheckedRef()).getGid();
  }
  return gid;
}

/**
 * @return the user name for the tar entry
 */
public String getUserName() {
  if (isReference()) {
    return ((TarFileSet) getCheckedRef()).getUserName();
  }
  return userName;
}

/**
 * @return the uid for the tar entry
 */
public int getUid() {
  if (isReference()) {
    return ((TarFileSet) getCheckedRef()).getUid();
  }
  return uid;
}

/**
 * Return a TarFileSet that has the same properties
 * as this one.
 * @return the cloned tarFileSet
 */
@Override
public Object clone() {
  if (isReference()) {
    return getRef(getProject()).clone();
  }
  return super.clone();
}

/**
 * A check attributes for TarFileSet.
 * If there is a reference, and
 * it is a TarFileSet, the tar fileset attributes
 * cannot be used.
 */
private void checkTarFileSetAttributesAllowed() {
  if (getProject() == null
    || (isReference()
      && (getRefid().getReferencedObject(
          getProject())
        instanceof TarFileSet))) {
    checkAttributesAllowed();
  }
}