content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.atlas.v1.typesystem.types.utils;
  
  import org.apache.atlas.v1.model.typedef.AttributeDefinition;
  import org.apache.atlas.v1.model.typedef.ClassTypeDefinition;
  import org.apache.atlas.v1.model.typedef.Multiplicity;
  import org.apache.atlas.v1.model.typedef.TraitTypeDefinition;
  
  import java.util.Arrays;
  import java.util.List;
  import java.util.Objects;
  import java.util.Set;
  
  public class TypesUtil {
      private TypesUtil() {
          // to block instantiation
      }
  
      public static ClassTypeDefinition createClassTypeDef(String name, String description, Set<String> superTypes, AttributeDefinition... attributes) {
          return new ClassTypeDefinition(name, description, "1.0", Arrays.asList(attributes), superTypes);
      }
  
      public static ClassTypeDefinition createClassTypeDef(String name, String description, String typeVersion, Set<String> superTypes, AttributeDefinition... attributes) {
          return new ClassTypeDefinition(name, description, typeVersion, Arrays.asList(attributes), superTypes);
      }
  
      public static TraitTypeDefinition createTraitTypeDef(String name, String description, Set<String> superTypes, AttributeDefinition... attributes) {
          return createTraitTypeDef(name, description, superTypes, Arrays.asList(attributes));
      }
  
      public static TraitTypeDefinition createTraitTypeDef(String name, String description, String typeVersion, Set<String> superTypes, AttributeDefinition... attributes) {
          return createTraitTypeDef(name, description, typeVersion, superTypes, Arrays.asList(attributes));
      }
  
      public static TraitTypeDefinition createTraitTypeDef(String name, String description, Set<String> superTypes, List<AttributeDefinition> attributes) {
          return new TraitTypeDefinition(name, description, "1.0", attributes, superTypes);
      }
  
      public static TraitTypeDefinition createTraitTypeDef(String name, String description, String typeVersion, Set<String> superTypes, List<AttributeDefinition> attributes) {
          return new TraitTypeDefinition(name, description, typeVersion, attributes, superTypes);
      }
  
      public static AttributeDefinition createUniqueRequiredAttrDef(String name, String dataTypeName) {
          return new AttributeDefinition(name, dataTypeName, Multiplicity.REQUIRED, false, true, true, null, null);
      }
  
      public static AttributeDefinition createRequiredAttrDef(String name, String dataTypeName) {
          return new AttributeDefinition(name, dataTypeName, Multiplicity.REQUIRED, false, false, true, null, null);
      }
  
      public static AttributeDefinition createOptionalAttrDef(String name, String dataTypeName) {
          return new AttributeDefinition(name, dataTypeName, Multiplicity.OPTIONAL, false, false, true, null, null);
      }
  
      public static class Pair<L, R> {
          public L left;
          public R right;
  
          public Pair(L left, R right) {
              this.left  = left;
              this.right = right;
          }
  
          public static <L, R> Pair<L, R> of(L left, R right) {
              return new Pair<>(left, right);
          }
  
          public int hashCode() {
              return Objects.hash(left, right);
          }
  
          public boolean equals(Object o) {
              if (this == o) {
                  return true;
              } else if (o == null || getClass() != o.getClass()) {
                  return false;
              }
  
              Pair<?, ?> p = (Pair<?, ?>) o;
  
              return Objects.equals(left, p.left) && Objects.equals(right, p.right);
          }
      }
  }
  