exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/fn/ExtendedJsonOutput.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.drill.exec.vector.complex.fn;

import java.io.IOException;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneOffset;
import java.time.temporal.TemporalAccessor;

import org.joda.time.Period;

import com.fasterxml.jackson.core.JsonGenerator;

/**
 * Writes JSON Output that will wrap Binary, Date, Time, Timestamp, Integer, Decimal and Interval types with wrapping
 * maps for better type resolution upon deserialization.
 */
public class ExtendedJsonOutput extends BasicJsonOutput {

  public ExtendedJsonOutput(JsonGenerator gen) {
    super(gen, DateOutputFormat.ISO);
  }

  @Override
  public void writeBigInt(long value) throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.INTEGER.serialized);
    super.writeBigInt(value);
    gen.writeEndObject();
  }

  @Override
  public void writeBinary(byte[] value) throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.BINARY.serialized);
    super.writeBinary(value);
    gen.writeEndObject();
  }

  @Override
  public void writeDate(TemporalAccessor value) throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.DATE.serialized);
    super.writeDate(value);
    gen.writeEndObject();
  }

  @Override
  public void writeTime(TemporalAccessor value) throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.TIME.serialized);
    super.writeTime(((LocalTime) value).atOffset(ZoneOffset.UTC));   // output time in local time zone
    gen.writeEndObject();
  }

  @Override
  public void writeTimestamp(TemporalAccessor value) throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.TIMESTAMP.serialized);
    super.writeTimestamp(((LocalDateTime) value).atOffset(ZoneOffset.UTC)); // output date time in local time zone
    gen.writeEndObject();
  }

  @Override
  public void writeInterval(Period value) throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.INTERVAL.serialized);
    super.writeInterval(value);
    gen.writeEndObject();
  }

  @Override
  public void writeBigIntNull() throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.INTEGER.serialized);
    super.writeBigIntNull();
    gen.writeEndObject();
  }

  @Override
  public void writeBinaryNull() throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.BINARY.serialized);
    super.writeBinaryNull();
    gen.writeEndObject();
  }

  @Override
  public void writeDateNull() throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.DATE.serialized);
    super.writeDateNull();
    gen.writeEndObject();
  }

  @Override
  public void writeTimeNull() throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.TIME.serialized);
    super.writeTimeNull();
    gen.writeEndObject();
  }

  @Override
  public void writeTimestampNull() throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.TIMESTAMP.serialized);
    super.writeTimestampNull();
    gen.writeEndObject();
  }

  @Override
  public void writeIntervalNull() throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.INTERVAL.serialized);
    super.writeIntervalNull();
    gen.writeEndObject();
  }

  @Override
  public void writeDecimal(BigDecimal value) throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.DECIMAL.serialized);
    super.writeDecimal(value);
    gen.writeEndObject();
  }

  @Override
  public void writeDecimalNull() throws IOException {
    gen.writeStartObject();
    gen.writeFieldName(ExtendedType.DECIMAL.serialized);
    super.writeDecimalNull();
    gen.writeEndObject();
  }

  @Override
  public void writeTinyInt(byte value) throws IOException {
    writeBigInt(value);
  }

  @Override
  public void writeSmallInt(short value) throws IOException {
    writeBigInt(value);
  }

  @Override
  public void writeInt(int value) throws IOException {
    writeBigInt(value);
  }

  @Override
  public void writeTinyIntNull() throws IOException {
    writeBigIntNull();
  }

  @Override
  public void writeSmallIntNull() throws IOException {
    writeBigIntNull();
  }

  @Override
  public void writeIntNull() throws IOException {
    writeBigIntNull();
  }


}