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SirixDB is a hybrid on-disk and in-memory document oriented, versioned database system. It has a lightweight buffer manager, stores everything in a huge persistent and durable tree and allows efficient reconstruction of every revision. Furthermore, SirixDB implements change tracking, diffing and supports time travel queries.

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package io.sirix.index.redblacktree;

import io.sirix.index.redblacktree.interfaces.ImmutableRBNodeKey;
import io.sirix.node.AbstractForwardingNode;
import io.sirix.node.NodeKind;

import io.sirix.node.delegates.NodeDelegate;
import org.checkerframework.checker.nullness.qual.NonNull;

/**
 * Immutable RBNode.
 *
 * @author Johannes Lichtenberger
 *
 * @param  key which has to be comparable (implement Comparable interface)
 */
public final class ImmutableRBNodeImpl> extends AbstractForwardingNode
    implements ImmutableRBNodeKey {

  /** {@link RBNodeKey} to wrap. */
  private final RBNodeKey node;

  /**
   * Constructor.
   *
   * @param node {@link RBNodeKey} to wrap.
   */
  public ImmutableRBNodeImpl(final RBNodeKey node) {
    assert node != null;
    this.node = node;
  }

  @Override
  public NodeKind getKind() {
    return node.getKind();
  }

  @Override
  public K getKey() {
    return node.getKey();
  }

  @Override
  public long getValueNodeKey() {
    return node.getValueNodeKey();
  }

  @Override
  public boolean isChanged() {
    return node.isChanged();
  }

  @Override
  public boolean hasLeftChild() {
    return node.hasLeftChild();
  }

  @Override
  public boolean hasRightChild() {
    return node.hasRightChild();
  }

  @Override
  public long getLeftChildKey() {
    return node.getLeftChildKey();
  }

  @Override
  public long getRightChildKey() {
    return node.getRightChildKey();
  }

  @Override
  protected @NonNull NodeDelegate delegate() {
    return node.delegate();
  }
}