blob: 9aeda2b7d2eb3303cae796766c56022818645a57 [file] [log] [blame]
// Copyright 2008 Google Inc.
//
// Licensed 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 com.google.gerrit.json;
import com.google.gerrit.common.Nullable;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonNull;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import java.lang.reflect.Type;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.TimeZone;
class SqlTimestampDeserializer implements JsonDeserializer<Timestamp>, JsonSerializer<Timestamp> {
private static final TimeZone UTC = TimeZone.getTimeZone("UTC");
@Nullable
@Override
public Timestamp deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
if (json.isJsonNull()) {
return null;
}
if (!json.isJsonPrimitive()) {
throw new JsonParseException("Expected string for timestamp type");
}
JsonPrimitive p = (JsonPrimitive) json;
if (!p.isString()) {
throw new JsonParseException("Expected string for timestamp type");
}
String input = p.getAsString();
if (input.trim().isEmpty()) {
// Magic timestamp to indicate no timestamp. (-> null object)
// Always create a new object as timestamps are mutable. Don't use TimeUtil.never() to not
// introduce an undesired dependency.
return new Timestamp(0);
}
return JavaSqlTimestampHelper.parseTimestamp(input);
}
@Override
public JsonElement serialize(Timestamp src, Type typeOfSrc, JsonSerializationContext context) {
if (src == null) {
return JsonNull.INSTANCE;
}
return new JsonPrimitive(newFormat().format(src) + "000000");
}
private static SimpleDateFormat newFormat() {
SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
f.setTimeZone(UTC);
f.setLenient(true);
return f;
}
}