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Java > Open Source Codes > org > hibernate > hql > ast > tree > Statement


1 // $Id: Statement.java,v 1.1 2005/07/12 20:27:17 steveebersole Exp $
2 package org.hibernate.hql.ast.tree;
3
4 import org.hibernate.hql.ast.HqlSqlWalker;
5
6 /**
7  * Common interface modeling the different HQL statements (i.e., INSERT, UPDATE, DELETE, SELECT).
8  *
9  * @author Steve Ebersole
10  */
11 public interface Statement {
12
13     /**
14      * Retreive the "phase 2" walker which generated this statement tree.
15      *
16      * @return The HqlSqlWalker instance which generated this statement tree.
17      */
18     public HqlSqlWalker getWalker();
19
20     /**
21      * Return the main token type representing the type of this statement.
22      *
23      * @return The corresponding token type.
24      */
25     public int getStatementType();
26
27     /**
28      * Does this statement require the StatementExecutor?
29      * </p>
30      * Essentially, at the JDBC level, does this require an executeUpdate()?
31      *
32      * @return True if this statement should be handed off to the
33      * StatementExecutor to be executed; false otherwise.
34      */
35     public boolean needsExecutor();
36 }
37
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