public void setFieldValue(_Fields field, @org.apache.thrift.annotation.Nullable java.lang.Object value) {
    switch (field) {
    case LOW_VALUE:
      if (value == null) {
        unsetLowValue();
      } else {
        setLowValue((Date)value);
      }
      break;

    case HIGH_VALUE:
      if (value == null) {
        unsetHighValue();
      } else {
        setHighValue((Date)value);
      }
      break;

    case NUM_NULLS:
      if (value == null) {
        unsetNumNulls();
      } else {
        setNumNulls((java.lang.Long)value);
      }
      break;

    case NUM_DVS:
      if (value == null) {
        unsetNumDVs();
      } else {
        setNumDVs((java.lang.Long)value);
      }
      break;

    case BIT_VECTORS:
      if (value == null) {
        unsetBitVectors();
      } else {
        if (value instanceof byte[]) {
          setBitVectors((byte[])value);
        } else {
          setBitVectors((java.nio.ByteBuffer)value);
        }
      }
      break;

    case HISTOGRAM:
      if (value == null) {
        unsetHistogram();
      } else {
        if (value instanceof byte[]) {
          setHistogram((byte[])value);
        } else {
          setHistogram((java.nio.ByteBuffer)value);
        }
      }
      break;

    }
  }
Returns true if field histogram is set (has been assigned a value) and false otherwise
standalone-metastore/metastore-common/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/metastore/api/DateColumnStatsData.java