code: /*
   * 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
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * 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.skywalking.oap.server.core.storage.model;
  
  import lombok.EqualsAndHashCode;
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  import org.apache.skywalking.oap.server.core.analysis.DownSampling;
  import org.apache.skywalking.oap.server.core.analysis.metrics.Metrics;
  import org.apache.skywalking.oap.server.core.analysis.record.Record;
  
  import java.util.List;
  
  /**
   * The model definition of a logic entity.
   */
  @Getter
  @EqualsAndHashCode
  @RequiredArgsConstructor
  public class Model {
      private final String name;
      private final List<ModelColumn> columns;
      private final int scopeId;
      private final DownSampling downsampling;
      private final boolean superDataset;
      private final Class<?> streamClass;
      private final boolean timeRelativeID;
      private final SQLDatabaseModelExtension sqlDBModelExtension;
      private final BanyanDBModelExtension banyanDBModelExtension;
      private final ElasticSearchModelExtension elasticSearchModelExtension;
  
      @Getter(lazy = true)
      private final boolean isMetric = Metrics.class.isAssignableFrom(getStreamClass());
      @Getter(lazy = true)
      private final boolean isRecord = Record.class.isAssignableFrom(getStreamClass());
      @Getter(lazy = true)
      private final boolean isTimeSeries = !DownSampling.None.equals(getDownsampling());
  }
  