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
   *
   * 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.calcite.materialize;
  
  import org.apache.calcite.util.ImmutableBitSet;
  
  import com.google.common.collect.ImmutableList;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.util.Objects;
  
  /** Definition of a particular combination of dimensions and measures of a
   * lattice that is the basis of a materialization.
   *
   * <p>Holds similar information to a
   * {@link org.apache.calcite.materialize.Lattice.Tile} but a lattice is
   * immutable and tiles are not added after their creation. */
  public class TileKey {
    public final Lattice lattice;
    public final ImmutableBitSet dimensions;
    public final ImmutableList<Lattice.Measure> measures;
  
    /** Creates a TileKey. */
    public TileKey(Lattice lattice, ImmutableBitSet dimensions,
        ImmutableList<Lattice.Measure> measures) {
      this.lattice = lattice;
      this.dimensions = dimensions;
      this.measures = measures;
    }
  
    @Override public int hashCode() {
      return Objects.hash(lattice, dimensions);
    }
  
    @Override public boolean equals(@Nullable Object obj) {
      return obj == this
          || obj instanceof TileKey
          && lattice == ((TileKey) obj).lattice
          && dimensions.equals(((TileKey) obj).dimensions)
          && measures.equals(((TileKey) obj).measures);
    }
  
    @Override public String toString() {
      return "dimensions: " + dimensions + ", measures: " + measures;
    }
  }
  