com.ebay.nest.io.sede.lazy.LazyHiveVarchar.java Source code

Introduction

Here is the source code for com.ebay.nest.io.sede.lazy.LazyHiveVarchar.java

Source

/**
 * 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 com.ebay.nest.io.sede.lazy;

import java.nio.charset.CharacterCodingException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.io.Text;

import com.ebay.nest.io.sede.HiveVarcharWritable;
import com.ebay.nest.io.sede.lazy.objectinspector.primitive.LazyHiveVarcharObjectInspector;
import com.ebay.nest.io.sede.typeinfo.VarcharTypeParams;

/**
 * LazyObject for storing a value of HiveVarchar.
 *
 */
public class LazyHiveVarchar extends LazyPrimitive<LazyHiveVarcharObjectInspector, HiveVarcharWritable> {

    private static final Log LOG = LogFactory.getLog(LazyHiveVarchar.class);

    protected int maxLength = -1;

    public LazyHiveVarchar(LazyHiveVarcharObjectInspector oi) {
        super(oi);
        VarcharTypeParams typeParams = (VarcharTypeParams) oi.getTypeParams();
        if (typeParams == null) {
            throw new RuntimeException("varchar type used without type params");
        }
        maxLength = typeParams.getLength();
        data = new HiveVarcharWritable();
    }

    public LazyHiveVarchar(LazyHiveVarchar copy) {
        super(copy);
        this.maxLength = copy.maxLength;
        data = new HiveVarcharWritable(copy.data);
    }

    public void setValue(LazyHiveVarchar copy) {
        data.set(copy.data, maxLength);
    }

    @Override
    public void init(ByteArrayRef bytes, int start, int length) {
        String byteData = null;
        try {
            byteData = Text.decode(bytes.getData(), start, length);
            data.set(byteData, maxLength);
            isNull = false;
        } catch (CharacterCodingException e) {
            isNull = true;
            LOG.debug("Data not in the HiveVarchar data type range so converted to null.", e);
        }
    }

}