Examples of org.eigenbase.rex.RexLocalRef

org.eigenbase.rex.RexLocalRef
Local variable.
Identity is based upon type and index. We want multiple references to the same slot in the same context to be equal. A side effect is that references to slots in different contexts which happen to have the same index and type will be considered equal; this is not desired, but not too damaging, because of the immutability.
Variables are immutable.

    List<RelDataTypeField> fields = new ArrayList<RelDataTypeField>();
    List<RexLocalRef> projectList = program.getProjectList();


    for( int i = 0; i < projectList.size(); i++ )
      {
      RexLocalRef ref = projectList.get( i );


      if( !program.isConstant( ref ) )
        continue;


      fields.add( outputRowType.getFieldList().get( i ) );

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      if( program.getCondition() != null || !program.getInputRowType().equals( program.getOutputRowType() ) )
        return false;


      for( int i = 0; i < program.getProjectList().size(); i++ )
        {
        RexLocalRef ref = program.getProjectList().get( i );


        if( ref.getIndex() != i )
          return false;
        }


      return true;
      }

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