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


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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24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
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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.map.DataMap;
63 import org.objectstyle.cayenne.project.ProjectPath;
64 import org.objectstyle.cayenne.util.Util;
65
66 /**
67  * Validator for DataMaps.
68  *
69  * @author Andrei Adamchik
70  */
71 public class DataMapValidator extends TreeNodeValidator {
72
73     /**
74      * Constructor for DataMapValidator.
75      */
76     public DataMapValidator() {
77         super();
78     }
79
80     public void validateObject(ProjectPath path, Validator validator) {
81         DataMap map = (DataMap) path.getObject();
82         validateName(map, path, validator);
83
84         // check if data map is not attached to any nodes
85 validateNodeLinks(map, path, validator);
86     }
87
88     protected void validateNodeLinks(DataMap map, ProjectPath path, Validator validator) {
89         DataDomain domain = (DataDomain) path.getObjectParent();
90         if (domain == null) {
91             return;
92         }
93         
94         boolean unlinked = true;
95         int nodeCount = 0;
96         Iterator JavaDoc it = domain.getDataNodes().iterator();
97         while(it.hasNext()) {
98             DataNode node = (DataNode)it.next();
99             nodeCount++;
100             if(node.getDataMaps().contains(map)) {
101                 unlinked = false;
102                 break;
103             }
104         }
105         
106         if(unlinked && nodeCount > 0) {
107              validator.registerWarning("DataMap is not linked to any DataNodes.", path);
108         }
109     }
110
111     protected void validateName(DataMap map, ProjectPath path, Validator validator) {
112         String JavaDoc name = map.getName();
113
114         if (Util.isEmptyString(name)) {
115             validator.registerError("Unnamed DataMap.", path);
116             return;
117         }
118
119         DataDomain domain = (DataDomain) path.getObjectParent();
120         if (domain == null) {
121             return;
122         }
123
124         // check for duplicate names in the parent context
125 Iterator JavaDoc it = domain.getDataMaps().iterator();
126         while (it.hasNext()) {
127             DataMap otherMap = (DataMap) it.next();
128             if (otherMap == map) {
129                 continue;
130             }
131
132             if (name.equals(otherMap.getName())) {
133                 validator.registerError("Duplicate DataMap name: " + name + ".", path);
134                 return;
135             }
136         }
137     }
138 }
139
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