How to use

keySet

method

in

uk.gov.gchq.gaffer.data.element.Properties

@Override
public Set<String> keySet() {
  return properties.keySet();
}

/**
 * Constructs a  by wrapping the provided {@link Properties}
 * and using the {@link uk.gov.gchq.gaffer.data.element.ElementValueLoader} to lazily load the property values when requested.
 *
 * @param properties  the properties to wrap.
 * @param valueLoader the element value loader to use to lazily load the property values
 */
public LazyProperties(final Properties properties, final ElementValueLoader valueLoader) {
  this.valueLoader = valueLoader;
  this.properties = properties;
  loadedProperties = new HashSet<>(properties.keySet());
}

@Override
public Set<String> keySet() {
  return properties.keySet();
}

/**
 * Constructs a  by wrapping the provided {@link Properties}
 * and using the {@link uk.gov.gchq.gaffer.data.element.ElementValueLoader} to lazily load the property values when requested.
 *
 * @param properties  the properties to wrap.
 * @param valueLoader the element value loader to use to lazily load the property values
 */
public LazyProperties(final Properties properties, final ElementValueLoader valueLoader) {
  this.valueLoader = valueLoader;
  this.properties = properties;
  loadedProperties = new HashSet<>(properties.keySet());
}

  /**
   * Clone an {@link Element}, based on a target {@link Schema}.
   *
   * @param element the element to clone
   * @param schema the schema
   * @return the cloned element
   */
  public Element cloneElement(final Element element, final Schema schema) {
    try {
      final Element clone = element.emptyClone();
      final SchemaElementDefinition sed = schema.getElement(clone.getGroup());
      for (final String propertyName : element.getProperties().keySet()) {
        final Object property = element.getProperty(propertyName);
        if (null == sed.getPropertyTypeDef(propertyName) || null == sed.getPropertyTypeDef(propertyName).getSerialiser()) {
          // This can happen if transient properties are derived - they will not have serialisers.
          LOGGER.warn("Can't find Serialisation for {}, returning uncloned property", propertyName);
          clone.putProperty(propertyName, property);
        } else if (null != property) {
          final Serialiser serialiser = sed.getPropertyTypeDef(propertyName).getSerialiser();
          clone.putProperty(propertyName, serialiser.deserialise(serialiser.serialise(property)));
        } else {
          clone.putProperty(propertyName, null);
        }
      }
      return clone;
    } catch (final SerialisationException e) {
      throw new RuntimeException("SerialisationException converting elements", e);
    }
  }
}