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.beam.sdk.coders;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.BitSet;
  
  /** Coder for {@link BitSet}. */
  public class BitSetCoder extends AtomicCoder<BitSet> {
    private static final BitSetCoder INSTANCE = new BitSetCoder();
    private static final ByteArrayCoder BYTE_ARRAY_CODER = ByteArrayCoder.of();
  
    private BitSetCoder() {}
  
    public static BitSetCoder of() {
      return INSTANCE;
    }
  
    @Override
    public void encode(BitSet value, OutputStream outStream) throws CoderException, IOException {
      encode(value, outStream, Context.NESTED);
    }
  
    @Override
    public void encode(BitSet value, OutputStream outStream, Context context)
        throws CoderException, IOException {
      if (value == null) {
        throw new CoderException("cannot encode a null BitSet");
      }
      BYTE_ARRAY_CODER.encodeAndOwn(value.toByteArray(), outStream, context);
    }
  
    @Override
    public BitSet decode(InputStream inStream) throws CoderException, IOException {
      return decode(inStream, Context.NESTED);
    }
  
    @Override
    public BitSet decode(InputStream inStream, Context context) throws CoderException, IOException {
      return BitSet.valueOf(BYTE_ARRAY_CODER.decode(inStream, context));
    }
  
    @Override
    public void verifyDeterministic() throws NonDeterministicException {
      verifyDeterministic(
          this, "BitSetCoder requires its ByteArrayCoder to be deterministic.", BYTE_ARRAY_CODER);
    }
  
    @Override
    public boolean consistentWithEquals() {
      return true;
    }
  }
  