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

    sb.append("fileType:");
    if (this.fileType == null) {
      sb.append("null");
    } else {
      sb.append(this.fileType);
    }
    first = false;
    if (!first) sb.append(", ");
    sb.append("path:");
    if (this.path == null) {
      sb.append("null");
    } else {
      sb.append(this.path);
    }
    first = false;
    if (!first) sb.append(", ");
    sb.append("fileSize:");
    sb.append(this.fileSize);
    first = false;
    if (!first) sb.append(", ");
    sb.append("mask:");
    sb.append(this.mask);
    first = false;
    if (!first) sb.append(", ");
    sb.append("index:");
    sb.append(this.index);
    first = false;
    if (!first) sb.append(", ");
    sb.append("specId:");
    sb.append(this.specId);
    first = false;
    if (!first) sb.append(", ");
    sb.append("partition:");
    if (this.partition == null) {
      sb.append("null");
    } else {
      sb.append(this.partition);
    }
    first = false;
    if (!first) sb.append(", ");
    sb.append("recordCount:");
    sb.append(this.recordCount);
    first = false;
    if (!first) sb.append(", ");
    sb.append("upperBounds:");
    if (this.upperBounds == null) {
      sb.append("null");
    } else {
      sb.append(this.upperBounds);
    }
    first = false;
    sb.append(")");
    return sb.toString();
  }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
amoro-common/src/main/gen-java/org/apache/amoro/api/DataFile.java