| /* |
| * 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.store.easy.json.values; |
| |
| import java.time.Duration; |
| import java.time.LocalDate; |
| import java.time.format.DateTimeFormatter; |
| |
| import org.apache.drill.exec.store.easy.json.loader.JsonLoaderImpl; |
| import org.apache.drill.exec.store.easy.json.parser.TokenIterator; |
| import org.apache.drill.exec.vector.accessor.ScalarWriter; |
| |
| import com.fasterxml.jackson.core.JsonToken; |
| |
| /** |
| * Parse local time dates. Stored internally in a local epoch |
| * offset from the local epoch, in ms. Does no time zone conversions, |
| * simply asserts that the date is in in the same time zone as the |
| * Drillbit. |
| */ |
| public class DateValueListener extends ScalarListener { |
| |
| public DateValueListener(JsonLoaderImpl loader, ScalarWriter writer) { |
| super(loader, writer); |
| } |
| |
| @Override |
| public void onValue(JsonToken token, TokenIterator tokenizer) { |
| switch (token) { |
| case VALUE_NULL: |
| setNull(); |
| break; |
| case VALUE_NUMBER_INT: |
| addValueToListenerMap(writer.schema().name(), tokenizer.longValue()); |
| writer.setLong(tokenizer.longValue()); |
| break; |
| case VALUE_STRING: |
| try { |
| |
| // A Drill date is ms since the epoch, local time. Our input |
| // is in UTC. We DO NOT want to convert from the date, midnight, UTC |
| // to local time since that will change the date. Instead, we just |
| // want to copy the offset since the epoch from UTC to our local |
| // time, so that we retain the date, even if the span of the date |
| // is different locally than UTC. A mess. |
| final String formatValue = schema().format(); |
| DateTimeFormatter dateTimeFormatter = formatValue == null |
| ? DateTimeFormatter.ISO_LOCAL_DATE : DateTimeFormatter.ofPattern(formatValue); |
| LocalDate localDate = LocalDate.parse(tokenizer.stringValue(), dateTimeFormatter); |
| writer.setLong(Duration.between(TimestampValueListener.LOCAL_EPOCH, |
| localDate.atStartOfDay()).toMillis()); |
| addValueToListenerMap(writer.schema().name(), Duration.between(TimestampValueListener.LOCAL_EPOCH, localDate.atStartOfDay()).toMillis()); |
| } catch (Exception e) { |
| throw loader.dataConversionError(schema(), "date", tokenizer.stringValue()); |
| } |
| break; |
| default: |
| throw tokenizer.invalidValue(token); |
| } |
| } |
| } |