1 /**
2 * This file Copyright (c) 2003-2011 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.cms.gui.query;
35
36 /**
37 * @author Sameer Charles $Id: AbstractExpressionImpl.java 41137 2011-01-06 18:19:25Z gjoseph $
38 */
39 public abstract class AbstractExpressionImpl implements SearchQueryExpression {
40
41 /**
42 * previous pointer
43 */
44 private SearchQueryExpression left;
45
46 /**
47 * next pointer
48 */
49 private SearchQueryExpression right;
50
51 /**
52 * get left expression
53 * @return object on left
54 */
55 public SearchQueryExpression getLeft() {
56 return this.left;
57 }
58
59 /**
60 * set left expression
61 * @param left object on left
62 */
63 public void setleft(SearchQueryExpression left) {
64 this.left = left;
65 }
66
67 /**
68 * checks if has left
69 * @return true if left object exist
70 */
71 public boolean hasLeft() {
72 return (this.getLeft() != null);
73 }
74
75 /**
76 * get right expression
77 * @return object on right
78 */
79 public SearchQueryExpression getRight() {
80 return this.right;
81 }
82
83 /**
84 * set right expression
85 * @param right object on right
86 */
87 public void setRight(SearchQueryExpression right) {
88 this.right = right;
89 }
90
91 /**
92 * checks if has right
93 * @return true if right object exist
94 */
95 public boolean hasRight() {
96 return (this.getRight() != null);
97 }
98
99 }