Package com.espertech.esper.common.internal.epl.expression.visitor

Class ExprNodeSubselectDeclaredNoTraverseVisitor

java.lang.Object
com.espertech.esper.common.internal.epl.expression.visitor.ExprNodeSubselectDeclaredNoTraverseVisitor
All Implemented Interfaces:
ExprNodeVisitorWithParent
public class ExprNodeSubselectDeclaredNoTraverseVisitor extends Object implements ExprNodeVisitorWithParent
Visitor that collects subselect instances only directly under alias expressions, and declared expressions, stopping at nested declared expressions.

  • Constructor Details

    • ExprNodeSubselectDeclaredNoTraverseVisitor

      public ExprNodeSubselectDeclaredNoTraverseVisitor(ExprDeclaredNode declaration)
      Ctor.
      Parameters:
      declaration - declare node

  • Method Details

    • reset

      public void reset()

    • getSubselects

      public List<ExprSubselectNode> getSubselects()
      Returns a list of lookup expression nodes.
      Returns:
      lookup nodes

    • isVisit

      public boolean isVisit(ExprNode exprNode)
      Description copied from interface: ExprNodeVisitorWithParent
      Allows visitor to indicate whether to visit a given node. Implicitly if a visitor doesn't visit a node it would also not visit any descendent child nodes of that node.
      Specified by:
      isVisit in interface ExprNodeVisitorWithParent
      Parameters:
      exprNode - is the node in questions
      Returns:
      true if the visitor wants to visit the child node (next call is visit), or false to skip child

    • visit

      public void visit(ExprNode exprNode, ExprNode parentExprNode)
      Description copied from interface: ExprNodeVisitorWithParent
      Visit the given expression node.
      Specified by:
      visit in interface ExprNodeVisitorWithParent
      Parameters:
      exprNode - is the expression node to visit
      parentExprNode - parent to visit