@Override
  public java.lang.String toString() {
    java.lang.StringBuilder sb = new java.lang.StringBuilder("TLogQueryFilter(");
    boolean first = true;

    if (isSetRegionName()) {
      sb.append("regionName:");
      if (this.regionName == null) {
        sb.append("null");
      } else {
        sb.append(this.regionName);
      }
      first = false;
    }
    if (isSetClientAddress()) {
      if (!first) sb.append(", ");
      sb.append("clientAddress:");
      if (this.clientAddress == null) {
        sb.append("null");
      } else {
        sb.append(this.clientAddress);
      }
      first = false;
    }
    if (isSetTableName()) {
      if (!first) sb.append(", ");
      sb.append("tableName:");
      if (this.tableName == null) {
        sb.append("null");
      } else {
        sb.append(this.tableName);
      }
      first = false;
    }
    if (isSetUserName()) {
      if (!first) sb.append(", ");
      sb.append("userName:");
      if (this.userName == null) {
        sb.append("null");
      } else {
        sb.append(this.userName);
      }
      first = false;
    }
    if (isSetLimit()) {
      if (!first) sb.append(", ");
      sb.append("limit:");
      sb.append(this.limit);
      first = false;
    }
    if (isSetLogType()) {
      if (!first) sb.append(", ");
      sb.append("logType:");
      if (this.logType == null) {
        sb.append("null");
      } else {
        sb.append(this.logType);
      }
      first = false;
    }
    if (isSetFilterByOperator()) {
      if (!first) sb.append(", ");
      sb.append("filterByOperator:");
      if (this.filterByOperator == null) {
        sb.append("null");
      } else {
        sb.append(this.filterByOperator);
      }
      first = false;
    }
    sb.append(")");
    return sb.toString();
  }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/TLogQueryFilter.java