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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.cayenne.ejbql.parser;
import org.apache.cayenne.ejbql.EJBQLExpression;
/**
* A JJTree-compliant tree node interface.
*
* @since 3.0
*/
public interface Node extends EJBQLExpression {
/**
* This method is called after the node has been made the current node. It
* indicates that child nodes can now be added to it.
*/
public void jjtOpen();
/**
* This method is called after all the child nodes have been added.
*/
public void jjtClose();
/**
* This pair of methods are used to inform the node of its parent.
*/
public void jjtSetParent(Node n);
public Node jjtGetParent();
/**
* This method tells the node to add its argument to the node's list of
* children.
*/
public void jjtAddChild(Node n, int i);
/**
* This method returns a child node. The children are numbered from zero,
* left to right.
*/
public Node jjtGetChild(int i);
/** Return the number of children the node has. */
public int jjtGetNumChildren();
}