How to use

label

method

in

org.apache.sis.referencing.operation.CRSPair

  /**
   * Returns a string representation of this key.
   */
  @Override
  public String toString() {
    return label(sourceCRS) + " ⟶ " + label(targetCRS);
  }
}

  /**
   * Returns a string representation of this key.
   */
  @Override
  public String toString() {
    return label(sourceCRS) + " ⟶ " + label(targetCRS);
  }
}

/**
 * Returns an error message for "No path found from sourceCRS to targetCRS".
 * This is used for the construction of {@link OperationNotFoundException}.
 *
 * @param  source  the source CRS.
 * @param  target  the target CRS.
 * @return a default error message.
 */
private static String notFoundMessage(final IdentifiedObject source, final IdentifiedObject target) {
  return Resources.format(Resources.Keys.CoordinateOperationNotFound_2, CRSPair.label(source), CRSPair.label(target));
}

/**
 * Returns an error message for "No path found from sourceCRS to targetCRS".
 * This is used for the construction of {@link OperationNotFoundException}.
 *
 * @param  source  the source CRS.
 * @param  target  the target CRS.
 * @return a default error message.
 */
private static String notFoundMessage(final IdentifiedObject source, final IdentifiedObject target) {
  return Resources.format(Resources.Keys.CoordinateOperationNotFound_2, CRSPair.label(source), CRSPair.label(target));
}

/**
 * Returns a name for an object derived from the specified one.
 * This method builds a name of the form "{@literal <original identifier>} (step 1)"
 * where "(step 1)" may be replaced by "(step 2)", "(step 3)", <i>etc.</i> if this
 * method has already been invoked for the same identifier (directly or indirectly).
 */
private Map<String,?> derivedFrom(final IdentifiedObject object) {
  Identifier oldID = object.getName();
  Object p = identifierOfStepCRS.get(oldID);
  if (p instanceof Identifier) {
    oldID = (Identifier) p;
    p = identifierOfStepCRS.get(oldID);
  }
  final int count = (p != null) ? (Integer) p + 1 : 1;
  final Identifier newID = new NamedIdentifier(Citations.SIS, oldID.getCode() + " (step " + count + ')');
  identifierOfStepCRS.put(newID, oldID);
  identifierOfStepCRS.put(oldID, count);
  final Map<String,Object> properties = new HashMap<>(4);
  properties.put(IdentifiedObject.NAME_KEY, newID);
  properties.put(IdentifiedObject.REMARKS_KEY, Vocabulary.formatInternational(
            Vocabulary.Keys.DerivedFrom_1, CRSPair.label(object)));
  return properties;
}

/**
 * Returns a name for an object derived from the specified one.
 * This method builds a name of the form "{@literal <original identifier>} (step 1)"
 * where "(step 1)" may be replaced by "(step 2)", "(step 3)", <i>etc.</i> if this
 * method has already been invoked for the same identifier (directly or indirectly).
 */
private Map<String,?> derivedFrom(final IdentifiedObject object) {
  Identifier oldID = object.getName();
  Object p = identifierOfStepCRS.get(oldID);
  if (p instanceof Identifier) {
    oldID = (Identifier) p;
    p = identifierOfStepCRS.get(oldID);
  }
  final int count = (p != null) ? (Integer) p + 1 : 1;
  final Identifier newID = new NamedIdentifier(Citations.SIS, oldID.getCode() + " (step " + count + ')');
  identifierOfStepCRS.put(newID, oldID);
  identifierOfStepCRS.put(oldID, count);
  final Map<String,Object> properties = new HashMap<>(4);
  properties.put(IdentifiedObject.NAME_KEY, newID);
  properties.put(IdentifiedObject.REMARKS_KEY, Vocabulary.formatInternational(
            Vocabulary.Keys.DerivedFrom_1, CRSPair.label(object)));
  return properties;
}