KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > caucho > amber > query > PathExpr


1 /*
2  * Copyright (c) 1998-2004 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.amber.query;
30
31 import com.caucho.amber.type.EntityType;
32
33 /**
34  * Represents an amber mapping query expression
35  */
36 public interface PathExpr extends AmberExpr {
37   /**
38    * Returns the target type.
39    */
40   public EntityType getTargetType();
41
42   /**
43    * Creates the expr from the path.
44    */
45   public AmberExpr createField(QueryParser parser, String field);
46   
47   /**
48    * Creates an array reference.
49    */
50   public AmberExpr createArray(AmberExpr field);
51   
52   /**
53    * Binds the expression as a select item.
54    */
55   public PathExpr bindSelect(QueryParser parser, String tableName);
56   
57   /**
58    * Binds the expression as a select item.
59    */
60   public FromItem bindSubPath(QueryParser parser);
61   
62   /**
63    * Returns the from item
64    */
65   public FromItem getChildFromItem();
66 }
67
Popular Tags