@Explain(displayName = "condition map", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED })
  @Signature
  public List<JoinCondDesc> getCondsList() {
    if (conds == null) {
      return null;
    }

    ArrayList<JoinCondDesc> l = new ArrayList<JoinCondDesc>();
    for (JoinCondDesc cond : conds) {
      l.add(cond);
    }

    return l;
  }
Get the string representation of filters.

Returns null if they are no filters.

@return Map from alias to filters on the alias.
ql/src/java/org/apache/hadoop/hive/ql/plan/JoinDesc.java