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.model;
  
  import com.fasterxml.jackson.annotation.JsonIgnore;
  import org.apache.atlas.model.annotation.AtlasJSON;
  
  import java.io.Serializable;
  import java.util.Objects;
  import java.util.concurrent.atomic.AtomicLong;
  
  @AtlasJSON
  public abstract class AtlasBaseModelObject implements Serializable {
      private static final long serialVersionUID = 1L;
  
      @JsonIgnore
      private static final AtomicLong s_nextId = new AtomicLong(System.nanoTime());
  
      private String guid;
  
      protected AtlasBaseModelObject() {
          init();
      }
  
      public AtlasBaseModelObject(final AtlasBaseModelObject other) {
          this.guid = other.guid;
      }
  
      public String getGuid() {
          return this.guid;
      }
  
      public void setGuid(String guid) {
          this.guid = guid;
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(guid);
      }
  
      @Override
      public boolean equals(final Object o) {
          if (this == o) {
              return true;
          } else if (!(o instanceof AtlasBaseModelObject)) {
              return false;
          }
  
          AtlasBaseModelObject that = (AtlasBaseModelObject) o;
  
          return Objects.equals(guid, that.guid);
      }
  
      @Override
      public String toString() {
          StringBuilder sb = new StringBuilder();
          sb.append(this.getClass().getSimpleName());
          sb.append("{");
          sb.append("guid=").append(guid);
          toString(sb);
          sb.append("}");
          return sb.toString();
      }
  
      protected void init() {
          setGuid("-" + s_nextId.incrementAndGet());
      }
  
      protected abstract StringBuilder toString(StringBuilder sb);
  }
  