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From QiangCai <...@git.apache.org>
Subject [GitHub] carbondata pull request #842: [CARBONDATA-937] Data loading for partition ta...
Date Thu, 11 May 2017 16:24:35 GMT
Github user QiangCai commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/842#discussion_r116036552
  
    --- Diff: core/src/main/java/org/apache/carbondata/core/scan/partition/PartitionUtil.java
---
    @@ -0,0 +1,108 @@
    +/*
    + * 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.carbondata.core.scan.partition;
    +
    +import java.math.BigDecimal;
    +import java.text.DateFormat;
    +import java.text.SimpleDateFormat;
    +import java.util.BitSet;
    +
    +import org.apache.carbondata.common.logging.LogService;
    +import org.apache.carbondata.common.logging.LogServiceFactory;
    +import org.apache.carbondata.core.constants.CarbonCommonConstants;
    +import org.apache.carbondata.core.metadata.datatype.DataType;
    +import org.apache.carbondata.core.metadata.schema.PartitionInfo;
    +import org.apache.carbondata.core.util.CarbonProperties;
    +
    +import org.apache.commons.lang.StringUtils;
    +
    +public class PartitionUtil {
    +
    +  private static LogService LOGGER = LogServiceFactory.getLogService(PartitionUtil.class.getName());
    +
    +  private static final ThreadLocal<DateFormat> timestampFormatter = new ThreadLocal<DateFormat>()
{
    +    @Override protected DateFormat initialValue() {
    +      return new SimpleDateFormat(CarbonProperties.getInstance()
    +          .getProperty(CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT,
    +              CarbonCommonConstants.CARBON_TIMESTAMP_DEFAULT_FORMAT));
    +    }
    +  };
    +
    +  private static final ThreadLocal<DateFormat> dateFormatter = new ThreadLocal<DateFormat>()
{
    +    @Override protected DateFormat initialValue() {
    +      return new SimpleDateFormat(CarbonProperties.getInstance()
    +          .getProperty(CarbonCommonConstants.CARBON_DATE_FORMAT,
    +              CarbonCommonConstants.CARBON_DATE_DEFAULT_FORMAT));
    +    }
    +  };
    +
    +  public static Partitioner getPartitioner(PartitionInfo partitionInfo) {
    +    switch (partitionInfo.getPartitionType()) {
    +      case HASH:
    +        return new HashPartitioner(partitionInfo.getNumPartitions());
    +      case LIST:
    +        return new ListPartitioner(partitionInfo);
    +      case RANGE:
    +        return new RangePartitioner(partitionInfo);
    +      default:
    +        return null;
    +    }
    +  }
    +
    +  public static Object getDataBasedOnDataType(String data, DataType actualDataType) {
    +    if (data == null) {
    +      return null;
    +    }
    +    if (actualDataType != DataType.STRING && StringUtils.isEmpty(data)) {
    --- End diff --
    
    for partition function, if the datatype of this column isn't string, and the value is
blank, it will return null. it means the data will be in default partition.


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