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/*
 * 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.kafka.connect.data;

import org.apache.kafka.connect.errors.DataException;

import java.util.Calendar;
import java.util.TimeZone;

/**
 * 

* A date representing a calendar day with no time of day or timezone. The corresponding Java type is a java.util.Date * with hours, minutes, seconds, milliseconds set to 0. The underlying representation is an integer representing the * number of standardized days (based on a number of milliseconds with 24 hours/day, 60 minutes/hour, 60 seconds/minute, * 1000 milliseconds/second with n) since Unix epoch. *

*/ public class Date { public static final String LOGICAL_NAME = "org.apache.kafka.connect.data.Date"; private static final long MILLIS_PER_DAY = 24 * 60 * 60 * 1000; private static final TimeZone UTC = TimeZone.getTimeZone("UTC"); /** * Returns a SchemaBuilder for a Date. By returning a SchemaBuilder you can override additional schema settings such * as required/optional, default value, and documentation. * @return a SchemaBuilder */ public static SchemaBuilder builder() { return SchemaBuilder.int32() .name(LOGICAL_NAME) .version(1); } public static final Schema SCHEMA = builder().schema(); /** * Convert a value from its logical format (Date) to it's encoded format. * @param value the logical value * @return the encoded value */ public static int fromLogical(Schema schema, java.util.Date value) { if (!(LOGICAL_NAME.equals(schema.name()))) throw new DataException("Requested conversion of Date object but the schema does not match."); Calendar calendar = Calendar.getInstance(UTC); calendar.setTime(value); if (calendar.get(Calendar.HOUR_OF_DAY) != 0 || calendar.get(Calendar.MINUTE) != 0 || calendar.get(Calendar.SECOND) != 0 || calendar.get(Calendar.MILLISECOND) != 0) { throw new DataException("Kafka Connect Date type should not have any time fields set to non-zero values."); } long unixMillis = calendar.getTimeInMillis(); return (int) (unixMillis / MILLIS_PER_DAY); } public static java.util.Date toLogical(Schema schema, int value) { if (!(LOGICAL_NAME.equals(schema.name()))) throw new DataException("Requested conversion of Date object but the schema does not match."); return new java.util.Date(value * MILLIS_PER_DAY); } }




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