How to use

GroupOrMergeElementExpression

in

cascading.flow.planner.rule.elementexpression

public ConsecutiveGroupOrMergeExpressionGraph()
 {
 super( SearchOrder.Topological );
 this.arc(
  new GroupOrMergeElementExpression( ElementCapture.Primary, TypeExpression.Topo.LinearOut ),
  ScopeExpression.ALL,
  new GroupOrMergeElementExpression()
 );
 }
}

public ConsecutiveGroupOrMergeExpressionGraph()
 {
 super( SearchOrder.Topological );
 this.arc(
  new GroupOrMergeElementExpression( ElementCapture.Primary, TypeExpression.Topo.LinearOut ),
  ScopeExpression.ALL,
  new GroupOrMergeElementExpression()
 );
 }
}

public GroupMergeToTapBoundaryExpressionGraph()
 {
 super( SearchOrder.ReverseTopological );
 this
  .arc(
   new GroupOrMergeElementExpression( ElementCapture.Primary ),
   ScopeExpression.ALL,
   new TapOrBoundaryElementExpression()
  );
 }
}

public GroupMergeToTapBoundaryExpressionGraph()
 {
 super( SearchOrder.ReverseTopological );
 this
  .arc(
   new GroupOrMergeElementExpression( ElementCapture.Primary ),
   ScopeExpression.ALL,
   new TapOrBoundaryElementExpression()
  );
 }
}