public void setFieldValue(_Fields field, @org.apache.thrift.annotation.Nullable java.lang.Object value) {
    switch (field) {
    case NAME:
      if (value == null) {
        unsetName();
      } else {
        if (value instanceof byte[]) {
          setName((byte[])value);
        } else {
          setName((java.nio.ByteBuffer)value);
        }
      }
      break;

    case MAX_VERSIONS:
      if (value == null) {
        unsetMaxVersions();
      } else {
        setMaxVersions((java.lang.Integer)value);
      }
      break;

    case COMPRESSION:
      if (value == null) {
        unsetCompression();
      } else {
        setCompression((java.lang.String)value);
      }
      break;

    case IN_MEMORY:
      if (value == null) {
        unsetInMemory();
      } else {
        setInMemory((java.lang.Boolean)value);
      }
      break;

    case BLOOM_FILTER_TYPE:
      if (value == null) {
        unsetBloomFilterType();
      } else {
        setBloomFilterType((java.lang.String)value);
      }
      break;

    case BLOOM_FILTER_VECTOR_SIZE:
      if (value == null) {
        unsetBloomFilterVectorSize();
      } else {
        setBloomFilterVectorSize((java.lang.Integer)value);
      }
      break;

    case BLOOM_FILTER_NB_HASHES:
      if (value == null) {
        unsetBloomFilterNbHashes();
      } else {
        setBloomFilterNbHashes((java.lang.Integer)value);
      }
      break;

    case BLOCK_CACHE_ENABLED:
      if (value == null) {
        unsetBlockCacheEnabled();
      } else {
        setBlockCacheEnabled((java.lang.Boolean)value);
      }
      break;

    case TIME_TO_LIVE:
      if (value == null) {
        unsetTimeToLive();
      } else {
        setTimeToLive((java.lang.Integer)value);
      }
      break;

    }
  }
Returns true if field timeToLive is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/generated/ColumnDescriptor.java