| /* |
| * 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.flink.api.common.typeutils.base; |
| |
| import java.io.IOException; |
| import java.util.Date; |
| import org.apache.flink.annotation.Internal; |
| import org.apache.flink.core.memory.DataInputView; |
| import org.apache.flink.core.memory.DataOutputView; |
| |
| @Internal |
| public final class DateSerializer extends TypeSerializerSingleton<Date> { |
| |
| private static final long serialVersionUID = 1L; |
| |
| public static final DateSerializer INSTANCE = new DateSerializer(); |
| |
| @Override |
| public boolean isImmutableType() { |
| return false; |
| } |
| |
| @Override |
| public Date createInstance() { |
| return new Date(); |
| } |
| |
| @Override |
| public Date copy(Date from) { |
| if(from == null) { |
| return null; |
| } |
| return new Date(from.getTime()); |
| } |
| |
| @Override |
| public Date copy(Date from, Date reuse) { |
| if (from == null) { |
| return null; |
| } |
| reuse.setTime(from.getTime()); |
| return reuse; |
| } |
| |
| @Override |
| public int getLength() { |
| return 8; |
| } |
| |
| @Override |
| public void serialize(Date record, DataOutputView target) throws IOException { |
| if (record == null) { |
| target.writeLong(Long.MIN_VALUE); |
| } else { |
| target.writeLong(record.getTime()); |
| } |
| } |
| |
| @Override |
| public Date deserialize(DataInputView source) throws IOException { |
| final long v = source.readLong(); |
| if (v == Long.MIN_VALUE) { |
| return null; |
| } else { |
| return new Date(v); |
| } |
| } |
| |
| @Override |
| public Date deserialize(Date reuse, DataInputView source) throws IOException { |
| final long v = source.readLong(); |
| if (v == Long.MIN_VALUE) { |
| return null; |
| } |
| reuse.setTime(v); |
| return reuse; |
| } |
| |
| @Override |
| public void copy(DataInputView source, DataOutputView target) throws IOException { |
| target.writeLong(source.readLong()); |
| } |
| |
| @Override |
| public boolean canEqual(Object obj) { |
| return obj instanceof DateSerializer; |
| } |
| |
| @Override |
| protected boolean isCompatibleSerializationFormatIdentifier(String identifier) { |
| return super.isCompatibleSerializationFormatIdentifier(identifier) |
| || identifier.equals(SqlDateSerializer.class.getCanonicalName()) |
| || identifier.equals(SqlTimeSerializer.class.getCanonicalName()); |
| } |
| } |