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.kafka.streams.state;
  
  import org.apache.kafka.common.Configurable;
  import org.apache.kafka.streams.TopologyConfig;
  
  import java.util.Map;
  
  /**
   * {@code DslStoreSuppliers} defines a grouping of factories to construct
   * stores for each of the types of state store implementations in Kafka
   * Streams. This allows configuration of a default store supplier beyond
   * the builtin defaults of RocksDB and In-Memory.
   *
   * <p>There are various ways that this configuration can be supplied to
   * the application (in order of precedence):
   * <ol>
   *     <li>Passed in directly to a DSL operator via either
   *     {@link org.apache.kafka.streams.kstream.Materialized#as(DslStoreSuppliers)},
   *     {@link org.apache.kafka.streams.kstream.Materialized#withStoreType(DslStoreSuppliers)}, or
   *     {@link org.apache.kafka.streams.kstream.StreamJoined#withDslStoreSuppliers(DslStoreSuppliers)}</li>
   *
   *     <li>Passed in via a Topology configuration override (configured in a
   *     {@link org.apache.kafka.streams.TopologyConfig} and passed into the
   *     {@link org.apache.kafka.streams.StreamsBuilder#StreamsBuilder(TopologyConfig)} constructor</li>
   *
   *     <li>Configured as a global default in {@link org.apache.kafka.streams.StreamsConfig} using
   *     the {@link org.apache.kafka.streams.StreamsConfig#DSL_STORE_SUPPLIERS_CLASS_CONFIG}</li>
   *     configuration.
   * </ol>
   *
   * <p>Kafka Streams is packaged with some pre-existing {@code DslStoreSuppliers}
   * that exist in {@link BuiltInDslStoreSuppliers}
   */
  public interface DslStoreSuppliers extends Configurable {
  
      @Override
      default void configure(Map<String, ?> configs) {
          // optional to configure this class
      }
  
      KeyValueBytesStoreSupplier keyValueStore(final DslKeyValueParams params);
  
      WindowBytesStoreSupplier windowStore(final DslWindowParams params);
  
      SessionBytesStoreSupplier sessionStore(final DslSessionParams params);
  
  }