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.cassandra.cql3.restrictions;
  
  import org.apache.cassandra.schema.ColumnMetadata;
  
  /**
   * Sets of restrictions
   */
  public interface Restrictions extends Restriction
  {
      /**
       * Checks if the specified column is restricted by an equals at the column level.
       * @return {@code true} if the column is restricted by an equals at the column level, {@code false} otherwise.
       */
      boolean isRestrictedByEquals(ColumnMetadata column);
  
      /**
       * Checks if the specified column is restricted by an equals or an IN at the column level.
       * @return {@code true} if the column is restricted by an equals or an IN at the column level, {@code false} otherwise.
       */
      boolean isRestrictedByEqualsOrIN(ColumnMetadata column);
  
      /**
       * Checks if this <code>Restrictions</code> is empty or not.
       *
       * @return <code>true</code> if this <code>Restrictions</code> is empty, <code>false</code> otherwise.
       */
      default boolean isEmpty()
      {
          return size() == 0;
      }
  
      /**
       * Returns the number of columns that have a restriction.
       *
       * @return the number of columns that have a restriction.
       */
      default int size()
      {
          return columns().size();
      }
  
      /**
       * Checks if any of the underlying restriction use an {@code IN} operator.
       * @return {@code true} if any of the underlying restriction is an IN, {@code false} otherwise
       */
      default boolean hasIN()
      {
          return false;
      }
  
      /**
       * Checks if any of the underlying restrictions is a slice.
       * @return {@code true} if any of the underlying restrictions is a slice, {@code false} otherwise
       */
      default boolean hasSlice()
      {
          return false;
      }
  }
  