FlagInstanceNodeItemImpl.java

/*
 * Portions of this software was developed by employees of the National Institute
 * of Standards and Technology (NIST), an agency of the Federal Government and is
 * being made available as a public service. Pursuant to title 17 United States
 * Code Section 105, works of NIST employees are not subject to copyright
 * protection in the United States. This software may be subject to foreign
 * copyright. Permission in the United States and in foreign countries, to the
 * extent that NIST may hold copyright, to use, copy, modify, create derivative
 * works, and distribute this software and its documentation without fee is hereby
 * granted on a non-exclusive basis, provided that this notice and disclaimer
 * of warranty appears in all copies.
 *
 * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
 * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
 * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
 * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
 * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
 * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
 * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
 * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
 * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
 * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
 * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
 */

package gov.nist.secauto.metaschema.core.metapath.item.node;

import gov.nist.secauto.metaschema.core.metapath.item.atomic.IAnyAtomicItem;
import gov.nist.secauto.metaschema.core.model.IFlagInstance;
import gov.nist.secauto.metaschema.core.util.ObjectUtils;

import edu.umd.cs.findbugs.annotations.NonNull;
import nl.talsmasoftware.lazy4j.Lazy;

/**
 * A {@link INodeItem} supported by a {@link IFlagInstance}, that may have an
 * associated value.
 */
class FlagInstanceNodeItemImpl
    extends AbstractFlagInstanceNodeItem
    implements IFeatureNullableAtomicValuedItem {

  @NonNull
  private final Object value;

  /**
   * Used to cache this object as an atomic item.
   */
  @NonNull
  private final Lazy<IAnyAtomicItem> atomicItem;

  public FlagInstanceNodeItemImpl(
      @NonNull IFlagInstance instance,
      @NonNull IModelNodeItem<?, ?> parent,
      @NonNull Object value) {
    super(instance, parent);
    this.value = value;
    this.atomicItem = ObjectUtils.notNull(Lazy.lazy(() -> newAtomicItem()));
  }

  @Override
  @NonNull
  public Object getValue() {
    return value;
  }

  @Override
  public Object getAtomicValue() {
    return getValue();
  }

  @Override
  public IAnyAtomicItem toAtomicItem() {
    return atomicItem.get();
  }
}