Source code: org/objectstyle/cayenne/project/validator/DbAttributeValidator.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
34 * permission of the ObjectStyle Group.
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
39 * DISCLAIMED. IN NO EVENT SHALL THE OBJECTSTYLE GROUP OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47 * SUCH DAMAGE.
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 org.objectstyle.cayenne.dba.TypesMapping;
59 import org.objectstyle.cayenne.map.DbAttribute;
60 import org.objectstyle.cayenne.map.DerivedDbAttribute;
61 import org.objectstyle.cayenne.project.ProjectPath;
62 import org.objectstyle.cayenne.util.Util;
63
64 /**
65 * @author Andrei Adamchik
66 */
67 public class DbAttributeValidator extends TreeNodeValidator {
68
69 /**
70 * Constructor for DbAttributeValidator.
71 */
72 public DbAttributeValidator() {
73 super();
74 }
75
76 public void validateObject(ProjectPath path, Validator validator) {
77 DbAttribute attribute = (DbAttribute) path.getObject();
78 // Must have name
79 if (Util.isEmptyString(attribute.getName())) {
80 validator.registerError("Unnamed DbAttribute.", path);
81 }
82
83 // all attributes must have type
84 if (attribute.getType() == TypesMapping.NOT_DEFINED) {
85 validator.registerWarning("DbAttribute has no type.", path);
86 }
87
88 if (attribute instanceof DerivedDbAttribute) {
89 DerivedDbAttribute derived = (DerivedDbAttribute) attribute;
90 int paramCount = derived.getParams().size();
91
92 String spec = derived.getExpressionSpec();
93 int paramsExpected = 0;
94 if (spec != null) {
95 // count tokens
96 int ind = -DerivedDbAttribute.ATTRIBUTE_TOKEN.length();
97 while ((ind =
98 spec.indexOf(
99 DerivedDbAttribute.ATTRIBUTE_TOKEN,
100 ind + DerivedDbAttribute.ATTRIBUTE_TOKEN.length()))
101 >= 0) {
102 paramsExpected++;
103 }
104 }
105
106 if (paramsExpected != paramCount) {
107 validator.registerWarning(
108 "Derived Attribute's \""
109 + attribute.getName()
110 + "\" parameter mismatch.",
111 path);
112 }
113 }
114 // VARCHAR and CHAR attributes must have max length
115 else if (
116 attribute.getMaxLength() < 0
117 && (attribute.getType() == java.sql.Types.VARCHAR
118 || attribute.getType() == java.sql.Types.CHAR)) {
119
120 validator.registerWarning(
121 "Character DbAttribute doesn't have max length.",
122 path);
123 }
124 }
125 }