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.dse.driver.api.core.cql.reactive;
  
  import com.datastax.dse.driver.internal.core.cql.reactive.CqlRequestReactiveProcessor;
  import com.datastax.oss.driver.api.core.cql.SimpleStatement;
  import com.datastax.oss.driver.api.core.cql.Statement;
  import com.datastax.oss.driver.api.core.session.Session;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import java.util.Map;
  import java.util.Objects;
  import org.reactivestreams.Publisher;
  
  /**
   * A {@link Session} that offers utility methods to issue queries using reactive-style programming.
   *
   * <p>Methods in this interface all return {@link ReactiveResultSet} instances. See the javadocs of
   * this interface for important remarks anc caveats regarding the subscription to and consumption of
   * reactive result sets.
   *
   * @see ReactiveResultSet
   * @see ReactiveRow
   */
  public interface ReactiveSession extends Session {
  
    /**
     * Returns a {@link Publisher} that, once subscribed to, executes the given query and emits all
     * the results.
     *
     * <p>This is an alias for {@link #executeReactive(Statement)}
     * executeReactive(SimpleStatement.newInstance(query))}.
     *
     * @param query the query to execute.
     * @return The {@link Publisher} that will publish the returned results.
     * @see SimpleStatement#newInstance(String)
     */
    @NonNull
    default ReactiveResultSet executeReactive(@NonNull String query) {
      return executeReactive(SimpleStatement.newInstance(query));
    }
  
    /**
     * Returns a {@link Publisher} that, once subscribed to, executes the given query and emits all
     * the results.
     *
     * <p>This is an alias for {@link #executeReactive(Statement)}
     * executeReactive(SimpleStatement.newInstance(query, values))}.
     *
     * @param query the query to execute.
     * @param values the values for placeholders in the query string. Individual values can be {@code
     *     null}, but the vararg array itself can't.
     * @return The {@link Publisher} that will publish the returned results.
     * @see SimpleStatement#newInstance(String,Object...)
     */
    @NonNull
    default ReactiveResultSet executeReactive(@NonNull String query, @NonNull Object... values) {
      return executeReactive(SimpleStatement.newInstance(query, values));
    }
  
    /**
     * Returns a {@link Publisher} that, once subscribed to, executes the given query and emits all
     * the results.
     *
     * <p>This is an alias for {@link #executeReactive(Statement)}
     * executeReactive(SimpleStatement.newInstance(query,values))}.
     *
     * @param query the query to execute.
     * @param values the values for named placeholders in the query string. Individual values can be
     *     {@code null}, but the map itself can't.
     * @return The {@link Publisher} that will publish the returned results.
     * @see SimpleStatement#newInstance(String,Map)
     */
    @NonNull
    default ReactiveResultSet executeReactive(
        @NonNull String query, @NonNull Map<String, Object> values) {
      return executeReactive(SimpleStatement.newInstance(query, values));
    }
  
    /**
     * Returns a {@link Publisher} that, once subscribed to, executes the given query and emits all
     * the results.
     *
     * @param statement the statement to execute.
     * @return The {@link Publisher} that will publish the returned results.
     */
    @NonNull
    default ReactiveResultSet executeReactive(@NonNull Statement<?> statement) {
      return Objects.requireNonNull(
          execute(statement, CqlRequestReactiveProcessor.REACTIVE_RESULT_SET));
    }
  }
  