public boolean equals(TAppend that) {
    if (that == null)
      return false;
    if (this == that)
      return true;

    boolean this_present_table = true && this.isSetTable();
    boolean that_present_table = true && that.isSetTable();
    if (this_present_table || that_present_table) {
      if (!(this_present_table && that_present_table))
        return false;
      if (!this.table.equals(that.table))
        return false;
    }

    boolean this_present_row = true && this.isSetRow();
    boolean that_present_row = true && that.isSetRow();
    if (this_present_row || that_present_row) {
      if (!(this_present_row && that_present_row))
        return false;
      if (!this.row.equals(that.row))
        return false;
    }

    boolean this_present_columns = true && this.isSetColumns();
    boolean that_present_columns = true && that.isSetColumns();
    if (this_present_columns || that_present_columns) {
      if (!(this_present_columns && that_present_columns))
        return false;
      if (!this.columns.equals(that.columns))
        return false;
    }

    boolean this_present_values = true && this.isSetValues();
    boolean that_present_values = true && that.isSetValues();
    if (this_present_values || that_present_values) {
      if (!(this_present_values && that_present_values))
        return false;
      if (!this.values.equals(that.values))
        return false;
    }

    return true;
  }
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/thrift/generated/TAppend.java