public static ConstantPropagateSelectProc getSelectProc() {
    return new ConstantPropagateSelectProc();
  }
The Factory method to get the ConstantPropagateSelectProc class.

@return ConstantPropagateSelectProc
ql/src/java/org/apache/hadoop/hive/ql/optimizer/ConstantPropagateProcFactory.java