Source code: org/objectstyle/cayenne/project/validator/DbRelationshipValidator.java
1 /* ====================================================================
2 *
3 * The ObjectStyle Group Software License, Version 1.0
4 *
5 * Copyright (c) 2002-2003 The ObjectStyle Group
6 * and individual authors of the software. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. The end-user documentation included with the redistribution, if
21 * any, must include the following acknowlegement:
22 * "This product includes software developed by the
23 * ObjectStyle Group (http://objectstyle.org/)."
24 * Alternately, this acknowlegement may appear in the software itself,
25 * if and wherever such third-party acknowlegements normally appear.
26 *
27 * 4. The names "ObjectStyle Group" and "Cayenne"
28 * must not be used to endorse or promote products derived
29 * from this software without prior written permission. For written
30 * permission, please contact andrus@objectstyle.org.
31 *
32 * 5. Products derived from this software may not be called "ObjectStyle"
33 * nor may "ObjectStyle" appear in their names without prior written
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35 *
36 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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46 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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48 * ====================================================================
49 *
50 * This software consists of voluntary contributions made by many
51 * individuals on behalf of the ObjectStyle Group. For more
52 * information on the ObjectStyle Group, please see
53 * <http://objectstyle.org/>.
54 *
55 */
56 package org.objectstyle.cayenne.project.validator;
57
58 import java.util.Iterator;
59
60 import org.objectstyle.cayenne.map.DbAttributePair;
61 import org.objectstyle.cayenne.map.DbRelationship;
62 import org.objectstyle.cayenne.project.ProjectPath;
63 import org.objectstyle.cayenne.util.Util;
64
65 /**
66 * @author Andrei Adamchik
67 */
68 public class DbRelationshipValidator extends TreeNodeValidator {
69
70 /**
71 * Constructor for DbRelationshipValidator.
72 */
73 public DbRelationshipValidator() {
74 super();
75 }
76
77 public void validateObject(ProjectPath path, Validator validator) {
78 DbRelationship rel = (DbRelationship) path.getObject();
79 if (rel.getTargetEntity() == null) {
80 validator.registerError("DbRelationship has no target entity.", path);
81 }
82 else if (rel.getJoins().size() == 0) {
83 validator.registerWarning("DbRelationship has no joins.", path);
84 }
85 else {
86 // validate joins
87 Iterator joins = rel.getJoins().iterator();
88 while (joins.hasNext()) {
89 DbAttributePair join = (DbAttributePair) joins.next();
90 if (join.getSource() == null && join.getTarget() == null) {
91 validator.registerWarning(
92 "DbRelationship join has no source and target attributes selected.",
93 path);
94 }
95 else if (join.getSource() == null) {
96 validator.registerWarning(
97 "DbRelationship join has no source attribute selected.",
98 path);
99 }
100 else if (join.getTarget() == null) {
101 validator.registerWarning(
102 "DbRelationship join has no target attribute selected.",
103 path);
104 }
105 }
106 }
107
108 if (Util.isEmptyString(rel.getName())) {
109 validator.registerError("Unnamed DbRelationship.", path);
110 }
111 // check if there are attributes having the same name
112 else if (rel.getSourceEntity().getAttribute(rel.getName()) != null) {
113 validator.registerWarning(
114 "DbRelationship has the same name as one of DbAttributes",
115 path);
116 }
117 }
118 }