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.processor.api;
  
  /**
   * An abstract implementation of {@link FixedKeyProcessor} that manages the {@link FixedKeyProcessorContext} instance.
   *
   * @param <KIn> the type of input keys
   * @param <VIn> the type of input values
   * @param <VOut> the type of output values
   */
  public abstract class ContextualFixedKeyProcessor<KIn, VIn, VOut> implements FixedKeyProcessor<KIn, VIn, VOut> {
  
      private FixedKeyProcessorContext<KIn, VOut> context;
  
      protected ContextualFixedKeyProcessor() {}
  
      @Override
      public void init(final FixedKeyProcessorContext<KIn, VOut> context) {
          this.context = context;
      }
  
      /**
       * Get the processor's context set during {@link #init(FixedKeyProcessorContext) initialization}.
       *
       * @return the processor context; null only when called prior to {@link #init(FixedKeyProcessorContext) initialization}.
       */
      protected final FixedKeyProcessorContext<KIn, VOut> context() {
          return context;
      }
  }
  