binding/mdsal-binding-generator/src/main/java/org/opendaylight/mdsal/binding/generator/impl/rt/DefaultGroupingRuntimeType.java

   1 /*
   2  * Copyright (c) 2021 PANTHEON.tech, s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.mdsal.binding.generator.impl.rt;
   9
  10 import java.util.Arrays;
  11 import java.util.Collections;
  12 import java.util.List;
  13 import java.util.Objects;
  14 import org.eclipse.jdt.annotation.Nullable;
  15 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
  16 import org.opendaylight.mdsal.binding.runtime.api.CompositeRuntimeType;
  17 import org.opendaylight.mdsal.binding.runtime.api.GroupingRuntimeType;
  18 import org.opendaylight.mdsal.binding.runtime.api.RuntimeType;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.GroupingEffectiveStatement;
  20
  21 public final class DefaultGroupingRuntimeType extends AbstractCompositeRuntimeType<GroupingEffectiveStatement>
  22         implements GroupingRuntimeType {
  23     private final @Nullable Object directUsers;
  24
  25     public DefaultGroupingRuntimeType(final GeneratedType bindingType, final GroupingEffectiveStatement statement,
  26             final List<RuntimeType> children, final List<? extends CompositeRuntimeType> directUsers) {
  27         super(bindingType, statement, children);
  28         this.directUsers = switch (directUsers.size()) {
  29             case 0 -> null;
  30             case 1 -> Objects.requireNonNull(directUsers.get(0));
  31             default -> directUsers.stream().map(Objects::requireNonNull).toArray(CompositeRuntimeType[]::new);
  32         };
  33     }
  34
  35     @Override
  36     public List<CompositeRuntimeType> directUsers() {
  37         final var local = directUsers;
  38         if (local == null) {
  39             return List.of();
  40         } else if (local instanceof CompositeRuntimeType[] array) {
  41             return Collections.unmodifiableList(Arrays.asList(array));
  42         } else {
  43             return List.of((CompositeRuntimeType) local);
  44         }
  45     }
  46 }