// $Id: Statement.java 7460 2005-07-12 20:27:29Z steveebersole $package org.hibernate.hql.ast.tree;import org.hibernate.hql.ast.HqlSqlWalker;/** * Common interface modeling the different HQL statements (i.e., INSERT, UPDATE, DELETE, SELECT). * * @author Steve Ebersole */public interface Statement {	/**	 * Retreive the "phase 2" walker which generated this statement tree.	 *	 * @return The HqlSqlWalker instance which generated this statement tree.	 */	public HqlSqlWalker getWalker();	/**	 * Return the main token type representing the type of this statement.	 *	 * @return The corresponding token type.	 */	public int getStatementType();	/**	 * Does this statement require the StatementExecutor?	 * </p>	 * Essentially, at the JDBC level, does this require an executeUpdate()?	 *	 * @return True if this statement should be handed off to the	 * StatementExecutor to be executed; false otherwise.	 */	public boolean needsExecutor();}