Package org.eclipse.persistence.jpa.jpql.parser

Class QueryPosition

java.lang.Object
org.eclipse.persistence.jpa.jpql.parser.QueryPosition
public final class QueryPosition extends Object
This object contains the cursor position within the parsed tree and within each of the Expression from the root to the deepest leaf.
Version:
2.5
Author:
Pascal Filion

  • Constructor Details

    • QueryPosition

      public QueryPosition(int position)
      Creates a new QueryPosition.
      Parameters:
      position - The position of the cursor in the query

  • Method Details

    • addPosition

      public void addPosition(Expression expression, int position)
      Adds the position of the cursor within the given Expression
      Parameters:
      expression - An Expression in which the cursor is located
      position - The position of the cursor within the given Expression

    • getExpression

      public Expression getExpression()
      Returns the child Expression where the position of the cursor is.
      Returns:
      The deepest Expression child that was retrieving by traversing the parsed tree up to the position of the cursor.

    • getPosition

      public int getPosition()
      Returns the position of the cursor in the query.
      Returns:
      The position of the cursor in the query

    • getPosition

      public int getPosition(Expression expression)
      Returns the position of the cursor within the given Expression
      Parameters:
      expression - The Expression for which the position of the cursor is requested
      Returns:
      Either the position of the cursor within the given Expression or -1 if the cursor is not within it

    • setExpression

      public void setExpression(Expression expression)
      Sets the deepest leaf where the cursor is located.
      Parameters:
      expression - The Expression that is the deepest leaf within the parsed tree

    • toString

      public String toString()
      Overrides:
      toString in class Object