org.apache.hadoop.hive.serde2.lazy.LazyDate Maven / Gradle / Ivy
/**
* 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.hadoop.hive.serde2.lazy;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.sql.Date;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.hive.serde2.io.DateWritable;
import org.apache.hadoop.hive.serde2.lazy.objectinspector.primitive.LazyDateObjectInspector;
import org.apache.hadoop.io.Text;
/**
*
* LazyDate.
* Serializes and deserializes a Date in the SQL date format
*
* YYYY-MM-DD
*
*/
public class LazyDate extends LazyPrimitive {
private static final Logger LOG = LoggerFactory.getLogger(LazyDate.class);
public LazyDate(LazyDateObjectInspector oi) {
super(oi);
data = new DateWritable();
}
public LazyDate(LazyDate copy) {
super(copy);
data = new DateWritable(copy.data);
}
/**
* Initializes LazyDate object by interpreting the input bytes as a SQL date string.
*
* @param bytes
* @param start
* @param length
*/
@Override
public void init(ByteArrayRef bytes, int start, int length) {
String s = null;
if (!LazyUtils.isDateMaybe(bytes.getData(), start, length)) {
isNull = true;
return;
}
try {
s = Text.decode(bytes.getData(), start, length);
data.set(Date.valueOf(s));
isNull = false;
} catch (Exception e) {
isNull = true;
logExceptionMessage(bytes, start, length, "DATE");
}
}
/**
* Writes a Date in SQL date format to the output stream.
* @param out
* The output stream
* @param i
* The Date to write
* @throws IOException
*/
public static void writeUTF8(OutputStream out, DateWritable d)
throws IOException {
ByteBuffer b = Text.encode(d.toString());
out.write(b.array(), 0, b.limit());
}
}