Interface TraversalHandler

All Known Implementing Classes:
DB2QualifierTranslator, DerbyQualifierTranslator, FirebirdQualifierTranslator, FrontBaseQualifierTranslator, HSQLQualifierTranslator, OpenBaseQualifierTranslator, OracleQualifierTranslator, PostgresQualifierTranslator, QualifierTranslator, SQLiteQualifierTranslator, SybaseQualifierTranslator, TraversalHelper, TrimmingQualifierTranslator

public interface TraversalHandler
Expression visitor interface. Defines callback methods invoked when walking the expression using Expression.traverse(TraversalHandler).
  • Method Summary

    Modifier and Type Method Description
    void endNode​(Expression node, Expression parentNode)
    Called during the traversal after an expression node children processing is finished.
    void finishedChild​(Expression node, int childIndex, boolean hasMoreChildren)
    Called during traversal after a child of expression has been visited.
    void objectNode​(Object leaf, Expression parentNode)
    Called during the traversal when a leaf non-expression node is encountered.
    void startNode​(Expression node, Expression parentNode)
    Called during the traversal before an expression node children processing is started.
  • Method Details

    • finishedChild

      void finishedChild​(Expression node, int childIndex, boolean hasMoreChildren)
      Called during traversal after a child of expression has been visited.
    • startNode

      void startNode​(Expression node, Expression parentNode)
      Called during the traversal before an expression node children processing is started.
      Since:
      1.1
    • endNode

      void endNode​(Expression node, Expression parentNode)
      Called during the traversal after an expression node children processing is finished.
      Since:
      1.1
    • objectNode

      void objectNode​(Object leaf, Expression parentNode)
      Called during the traversal when a leaf non-expression node is encountered.