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 com.datastax.oss.driver.internal.querybuilder.select;
  
  import com.datastax.oss.driver.api.core.CqlIdentifier;
  import com.datastax.oss.driver.api.querybuilder.select.Selector;
  import com.datastax.oss.driver.api.querybuilder.term.Term;
  import com.datastax.oss.driver.shaded.guava.common.base.Preconditions;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import edu.umd.cs.findbugs.annotations.Nullable;
  import java.util.Objects;
  import net.jcip.annotations.Immutable;
  
  @Immutable
  public class RangeSelector implements Selector {
  
    private final Selector collection;
    private final Term left;
    private final Term right;
    private final CqlIdentifier alias;
  
    public RangeSelector(@NonNull Selector collection, @Nullable Term left, @Nullable Term right) {
      this(collection, left, right, null);
    }
  
    public RangeSelector(
        @NonNull Selector collection,
        @Nullable Term left,
        @Nullable Term right,
        @Nullable CqlIdentifier alias) {
      Preconditions.checkNotNull(collection);
      Preconditions.checkArgument(
          left != null || right != null, "At least one of the bounds must be specified");
      this.collection = collection;
      this.left = left;
      this.right = right;
      this.alias = alias;
    }
  
    @NonNull
    @Override
    public Selector as(@NonNull CqlIdentifier alias) {
      return new RangeSelector(collection, left, right, alias);
    }
  
    @Override
    public void appendTo(@NonNull StringBuilder builder) {
      collection.appendTo(builder);
      builder.append('[');
      if (left != null) {
        left.appendTo(builder);
      }
      builder.append("..");
      if (right != null) {
        right.appendTo(builder);
      }
      builder.append(']');
      if (alias != null) {
        builder.append(" AS ").append(alias.asCql(true));
      }
    }
  
    @NonNull
    public Selector getCollection() {
      return collection;
    }
  
    @Nullable
    public Term getLeft() {
      return left;
    }
  
    @Nullable
    public Term getRight() {
      return right;
    }
  
    @Nullable
    @Override
    public CqlIdentifier getAlias() {
      return alias;
    }
  
    @Override
    public boolean equals(Object other) {
      if (other == this) {
        return true;
      } else if (other instanceof RangeSelector) {
        RangeSelector that = (RangeSelector) other;
        return this.collection.equals(that.collection)
            && Objects.equals(this.left, that.left)
            && Objects.equals(this.right, that.right)
            && Objects.equals(this.alias, that.alias);
      } else {
        return false;
      }
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(collection, left, right, alias);
    }
  }
  