solr/contrib/analytics/src/java/org/apache/solr/analytics/stream/reservation/write/StringDataWriter.java

/*
 * 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.solr.analytics.stream.reservation.write;

import java.io.DataOutput;
import java.io.IOException;
import java.util.function.Supplier;

public class StringDataWriter extends ReductionDataWriter<Supplier<String>> {

  public StringDataWriter(DataOutput output, Supplier<String> extractor) {
    super(output, extractor);
  }

  @Override
  public void write() throws IOException {
    String temp = extractor.get();
    output.writeBoolean(temp != null);
    if (temp != null) {
      output.writeUTF(temp);
    }
  }
}