/*
* Druid - a distributed column store.
* Copyright (C) 2012, 2013 Metamarkets Group Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package io.druid.jackson;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.KeyDeserializer;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import com.fasterxml.jackson.datatype.joda.deser.DurationDeserializer;
import com.fasterxml.jackson.datatype.joda.deser.PeriodDeserializer;
import org.joda.time.DateTime;
import org.joda.time.Duration;
import org.joda.time.Interval;
import org.joda.time.Period;
import org.joda.time.format.ISODateTimeFormat;
import java.io.IOException;
/**
*/
class JodaStuff
{
static SimpleModule register(SimpleModule module)
{
module.addKeyDeserializer(DateTime.class, new DateTimeKeyDeserializer());
module.addDeserializer(DateTime.class, new DateTimeDeserializer());
module.addSerializer(DateTime.class, ToStringSerializer.instance);
module.addDeserializer(Interval.class, new JodaStuff.IntervalDeserializer());
module.addSerializer(Interval.class, ToStringSerializer.instance);
module.addDeserializer(Period.class, new PeriodDeserializer());
module.addSerializer(Period.class, ToStringSerializer.instance);
module.addDeserializer(Duration.class, new DurationDeserializer());
module.addSerializer(Duration.class, ToStringSerializer.instance);
return module;
}
/**
*/
private static class IntervalDeserializer extends StdDeserializer<Interval>
{
public IntervalDeserializer()
{
super(Interval.class);
}
@Override
public Interval deserialize(JsonParser jsonParser, DeserializationContext deserializationContext)
throws IOException, JsonProcessingException
{
return new Interval(jsonParser.getText());
}
}
private static class DateTimeKeyDeserializer extends KeyDeserializer
{
@Override
public Object deserializeKey(String key, DeserializationContext ctxt) throws IOException, JsonProcessingException
{
return new DateTime(key);
}
}
private static class DateTimeDeserializer extends StdDeserializer<DateTime>
{
public DateTimeDeserializer() {
super(DateTime.class);
}
@Override
public DateTime deserialize(JsonParser jp, DeserializationContext ctxt)
throws IOException, JsonProcessingException
{
JsonToken t = jp.getCurrentToken();
if (t == JsonToken.VALUE_NUMBER_INT) {
return new DateTime(jp.getLongValue());
}
if (t == JsonToken.VALUE_STRING) {
String str = jp.getText().trim();
if (str.length() == 0) { // [JACKSON-360]
return null;
}
// make sure to preserve time zone information when parsing timestamps
return ISODateTimeFormat.dateTimeParser()
.withOffsetParsed()
.parseDateTime(str);
}
throw ctxt.mappingException(getValueClass());
}
}
}