org.apache.drill.exec.serialization.PathSerDe Maven / Gradle / Ivy

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/*
 * 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.drill.exec.serialization;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import org.apache.hadoop.fs.Path;

import java.io.IOException;

/**
 * Path serializer to simple String path. Without it the hadoop Path serialization creates a big JSON object.
 */
public class PathSerDe {

  public static class Se extends JsonSerializer {

    @Override
    public void serialize(Path value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
      gen.writeString(value.toUri().getPath());
    }
  }
}