Method addBuiltin

fe/src/main/java/org/apache/impala/catalog/Db.java:458–463

Adds a builtin to this database. The function must not already exist.

(Function fn)

   * Adds a builtin to this database. The function must not already exist.
   */
  public void addBuiltin(Function fn) {
    Preconditions.checkState(isSystemDb());
    Preconditions.checkState(fn != null);
    Preconditions.checkState(getFunction(fn, Function.CompareMode.IS_IDENTICAL) == null);
    addFunction(fn, false);
  }

  /**
   * Returns a map of functionNames to list of (overloaded) functions with that name.