TColumnValueUtil.java

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// Copyright 2014 Cloudera Inc.
//
// Licensed 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.cloudera.impala.util;

import com.cloudera.impala.thrift.TColumnValue;

public class TColumnValueUtil {
  public static double getNumericVal(TColumnValue val) {
    if (val.isSetByte_val()) {
      return (double) val.byte_val;
    } else if (val.isSetShort_val()) {
      return (double) val.short_val;
    } else if (val.isSetInt_val()) {
      return (double) val.int_val;
    } else if (val.isSetLong_val()) {
      return (double) val.long_val;
    } else if (val.isSetDouble_val()) {
      return (double) val.double_val;
    } else if (val.isSetString_val()) {
      // we always return decimals as strings, even with as_ascii=false
      // in Expr::GetValue()
      try {
        return Double.valueOf(val.string_val);
      } catch (NumberFormatException e) {
        return 0;
      }
    }
    return 0;
  }
}