| /* |
| * 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.cassandra.serializers; |
| |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.TimeUnit; |
| import java.util.regex.Pattern; |
| |
| import org.joda.time.DateTime; |
| import org.joda.time.DateTimeZone; |
| import org.joda.time.LocalDate; |
| import org.joda.time.format.DateTimeFormat; |
| import org.joda.time.format.DateTimeFormatter; |
| |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| // For byte-order comparability, we shift by Integer.MIN_VALUE and treat the data as an unsigned integer ranging from |
| // min date to max date w/epoch sitting in the center @ 2^31 |
| public class SimpleDateSerializer implements TypeSerializer<Integer> |
| { |
| private static final DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd").withZone(DateTimeZone.UTC); |
| private static final long minSupportedDateMillis = TimeUnit.DAYS.toMillis(Integer.MIN_VALUE); |
| private static final long maxSupportedDateMillis = TimeUnit.DAYS.toMillis(Integer.MAX_VALUE); |
| private static final long maxSupportedDays = (long)Math.pow(2,32) - 1; |
| private static final long byteOrderShift = (long)Math.pow(2,31) * 2; |
| |
| private static final Pattern rawPattern = Pattern.compile("^-?\\d+$"); |
| public static final SimpleDateSerializer instance = new SimpleDateSerializer(); |
| |
| public Integer deserialize(ByteBuffer bytes) |
| { |
| return bytes.remaining() == 0 ? null : ByteBufferUtil.toInt(bytes); |
| } |
| |
| public ByteBuffer serialize(Integer value) |
| { |
| return value == null ? ByteBufferUtil.EMPTY_BYTE_BUFFER : ByteBufferUtil.bytes(value); |
| } |
| |
| public static int dateStringToDays(String source) throws MarshalException |
| { |
| // Raw day value in unsigned int form, epoch @ 2^31 |
| if (rawPattern.matcher(source).matches()) |
| { |
| try |
| { |
| long result = Long.parseLong(source); |
| |
| if (result < 0 || result > maxSupportedDays) |
| throw new NumberFormatException("Input out of bounds: " + source); |
| |
| // Shift > epoch days into negative portion of Integer result for byte order comparability |
| if (result >= Integer.MAX_VALUE) |
| result -= byteOrderShift; |
| |
| return (int) result; |
| } |
| catch (NumberFormatException e) |
| { |
| throw new MarshalException(String.format("Unable to make unsigned int (for date) from: '%s'", source), e); |
| } |
| } |
| |
| // Attempt to parse as date string |
| try |
| { |
| DateTime parsed = formatter.parseDateTime(source); |
| long millis = parsed.getMillis(); |
| if (millis < minSupportedDateMillis) |
| throw new MarshalException(String.format("Input date %s is less than min supported date %s", source, new LocalDate(minSupportedDateMillis).toString())); |
| if (millis > maxSupportedDateMillis) |
| throw new MarshalException(String.format("Input date %s is greater than max supported date %s", source, new LocalDate(maxSupportedDateMillis).toString())); |
| |
| return timeInMillisToDay(millis); |
| } |
| catch (IllegalArgumentException e1) |
| { |
| throw new MarshalException(String.format("Unable to coerce '%s' to a formatted date (long)", source), e1); |
| } |
| } |
| |
| public static int timeInMillisToDay(long millis) |
| { |
| Integer result = (int) TimeUnit.MILLISECONDS.toDays(millis); |
| result -= Integer.MIN_VALUE; |
| return result; |
| } |
| |
| public static long dayToTimeInMillis(int days) |
| { |
| return TimeUnit.DAYS.toMillis(days - Integer.MIN_VALUE); |
| } |
| |
| public void validate(ByteBuffer bytes) throws MarshalException |
| { |
| if (bytes.remaining() != 4) |
| throw new MarshalException(String.format("Expected 4 byte long for date (%d)", bytes.remaining())); |
| } |
| |
| public String toString(Integer value) |
| { |
| if (value == null) |
| return ""; |
| |
| return formatter.print(new LocalDate(dayToTimeInMillis(value), DateTimeZone.UTC)); |
| } |
| |
| public Class<Integer> getType() |
| { |
| return Integer.class; |
| } |
| } |