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Java > Open Source Codes > org > objectstyle > cayenne > project > validator > DataNodeValidator


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
4  * ObjectStyle Group - http://objectstyle.org/
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6  * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
7  * of the software. All rights reserved.
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10  * modification, are permitted provided that the following conditions
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24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
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26  * if and wherever such third-party acknowlegements normally appear.
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55  */
56 package org.objectstyle.cayenne.project.validator;
57
58 import java.util.Iterator JavaDoc;
59
60 import org.objectstyle.cayenne.access.DataDomain;
61 import org.objectstyle.cayenne.access.DataNode;
62 import org.objectstyle.cayenne.conf.DriverDataSourceFactory;
63 import org.objectstyle.cayenne.project.ProjectPath;
64 import org.objectstyle.cayenne.util.Util;
65
66 /**
67  * @author Andrei Adamchik
68  */
69 public class DataNodeValidator extends TreeNodeValidator {
70
71     /**
72      * Constructor for DataNodeValidator.
73      */
74     public DataNodeValidator() {
75         super();
76     }
77
78     public void validateObject(ProjectPath path, Validator validator) {
79         DataNode node = (DataNode) path.getObject();
80         validateName(node, path, validator);
81         validateConnection(node, path, validator);
82     }
83
84     protected void validateConnection(
85         DataNode node,
86         ProjectPath path,
87         Validator validator) {
88         String JavaDoc factory = node.getDataSourceFactory();
89
90         // If direct factory, make sure the location is a valid file name.
91 if (Util.isEmptyString(factory)) {
92             validator.registerError("No DataSource factory.", path);
93         } else if(!DriverDataSourceFactory.class.getName().equals(factory)) {
94             String JavaDoc location = node.getDataSourceLocation();
95             if (Util.isEmptyString(location)) {
96                 validator.registerError("DataNode has no location parameter.", path);
97             }
98         }
99
100         if (node.getAdapter() == null) {
101             validator.registerWarning("DataNode has no DBAdapter.", path);
102         }
103     }
104
105     protected void validateName(DataNode node, ProjectPath path, Validator validator) {
106         String JavaDoc name = node.getName();
107
108         if (Util.isEmptyString(name)) {
109             validator.registerError("Unnamed DataNode.", path);
110             return;
111         }
112
113         DataDomain domain = (DataDomain) path.getObjectParent();
114         if (domain == null) {
115             return;
116         }
117
118         // check for duplicate names in the parent context
119 Iterator JavaDoc it = domain.getDataNodes().iterator();
120         while (it.hasNext()) {
121             DataNode otherNode = (DataNode) it.next();
122             if (otherNode == node) {
123                 continue;
124             }
125
126             if (name.equals(otherNode.getName())) {
127                 validator.registerError("Duplicate DataNode name: " + name + ".", path);
128                 break;
129             }
130         }
131     }
132 }
133
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