public void setTableConstraintsInfo(TableConstraintsInfo tableConstraintsInfo) {
    this.tableConstraintsInfo = tableConstraintsInfo;
    this.isTableConstraintsFetched = true;
  }
Constraints related methods
 Note that set apis are used by DESCRIBE only, although get apis return RELY or ENABLE
 constraints DESCRIBE could set all type of constraints
ql/src/java/org/apache/hadoop/hive/ql/metadata/Table.java