/*
* 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.hadoop.hive.ql.parse.repl.dump.io;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.ql.parse.ReplicationSpec;
import org.apache.hadoop.hive.ql.parse.SemanticException;
import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonGenerator;
import java.io.Closeable;
import java.io.IOException;
import java.io.OutputStream;
import static org.apache.hadoop.hive.ql.parse.EximUtil.METADATA_FORMAT_VERSION;
public class JsonWriter implements Closeable {
final JsonGenerator jsonGenerator;
public JsonWriter(FileSystem fs, Path writePath) throws IOException {
OutputStream out = fs.create(writePath);
jsonGenerator = new JsonFactory().createJsonGenerator(out);
jsonGenerator.writeStartObject();
jsonGenerator.writeStringField("version", METADATA_FORMAT_VERSION);
}
@Override
public void close() throws IOException {
jsonGenerator.writeEndObject();
jsonGenerator.close();
}
public interface Serializer {
String UTF_8 = "UTF-8";
void writeTo(JsonWriter writer, ReplicationSpec additionalPropertiesProvider) throws
SemanticException, IOException;
}
}