How to use

entrySet

method

in

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

@Override
public Set<Map.Entry<String, Object>> entrySet() {
  return properties.entrySet();
}

/**
 * Removes all properties with names that are not in the provided set.
 *
 * @param propertiesToKeep a set of properties to keep
 */
public void keepOnly(final Collection<String> propertiesToKeep) {
  entrySet().removeIf(entry -> !propertiesToKeep.contains(entry.getKey()));
}

public void copyProperties(final Properties properties) {
  if (null != properties) {
    for (final Entry<String, Object> entry : properties.entrySet()) {
      putProperty(entry.getKey(), entry.getValue());
    }
  }
}

  @Test
  public void shouldDelegateEntrySetMethodToPropertiesInstance() {
    // Given
    final Properties properties = mock(Properties.class);
    final LazyProperties lazyProperties =
        new LazyProperties(properties, null);
    final Set<Map.Entry<String, Object>> expectedEntrySet = mock(Set.class);
    given(properties.entrySet()).willReturn(expectedEntrySet);

    // When
    final Set<Map.Entry<String, Object>> entrySet = lazyProperties.entrySet();

    // Then
    assertSame(expectedEntrySet, entrySet);
  }
}

@Override
public Set<Map.Entry<String, Object>> entrySet() {
  return properties.entrySet();
}

/**
 * Removes all properties with names that are not in the provided set.
 *
 * @param propertiesToKeep a set of properties to keep
 */
public void keepOnly(final Collection<String> propertiesToKeep) {
  entrySet().removeIf(entry -> !propertiesToKeep.contains(entry.getKey()));
}

public void copyProperties(final Properties properties) {
  if (null != properties) {
    for (final Entry<String, Object> entry : properties.entrySet()) {
      putProperty(entry.getKey(), entry.getValue());
    }
  }
}