public void setFieldValue(_Fields field, @org.apache.thrift.annotation.Nullable java.lang.Object value) {
    switch (field) {
    case TASK_ID:
      if (value == null) {
        unsetTaskId();
      } else {
        setTaskId((java.lang.String)value);
      }
      break;

    case TASK_TYPE:
      if (value == null) {
        unsetTaskType();
      } else {
        setTaskType((TaskType)value);
      }
      break;

    case TASK_ATTRIBUTES:
      if (value == null) {
        unsetTaskAttributes();
      } else {
        setTaskAttributes((java.util.Map<java.lang.String,java.lang.String>)value);
      }
      break;

    case TASK_COUNTERS:
      if (value == null) {
        unsetTaskCounters();
      } else {
        setTaskCounters((java.util.Map<java.lang.String,java.lang.Long>)value);
      }
      break;

    case OPERATOR_GRAPH:
      if (value == null) {
        unsetOperatorGraph();
      } else {
        setOperatorGraph((Graph)value);
      }
      break;

    case OPERATOR_LIST:
      if (value == null) {
        unsetOperatorList();
      } else {
        setOperatorList((java.util.List<Operator>)value);
      }
      break;

    case DONE:
      if (value == null) {
        unsetDone();
      } else {
        setDone((java.lang.Boolean)value);
      }
      break;

    case STARTED:
      if (value == null) {
        unsetStarted();
      } else {
        setStarted((java.lang.Boolean)value);
      }
      break;

    }
  }
Returns true if field started is set (has been assigned a value) and false otherwise
ql/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/ql/plan/api/Task.java