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


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
4  * ObjectStyle Group - http://objectstyle.org/
5  *
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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22  * must include the following acknowlegement:
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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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54  * <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.map.DataMap;
61 import org.objectstyle.cayenne.map.Procedure;
62 import org.objectstyle.cayenne.project.ProjectPath;
63 import org.objectstyle.cayenne.query.ProcedureQuery;
64 import org.objectstyle.cayenne.query.Query;
65 import org.objectstyle.cayenne.util.Util;
66
67 /**
68  * Validator for ProcedureQueries.
69  *
70  * @author Andrei Adamchik
71  * @since 1.1
72  */
73 public class ProcedureQueryValidator extends TreeNodeValidator {
74
75     public void validateObject(ProjectPath treeNodePath, Validator validator) {
76         ProcedureQuery query = (ProcedureQuery) treeNodePath.getObject();
77
78         validateName(query, treeNodePath, validator);
79         validateRoot(query, treeNodePath, validator);
80         validateResultType(query, treeNodePath, validator);
81     }
82
83     protected void validateRoot(Query query, ProjectPath path, Validator validator) {
84         DataMap map = (DataMap) path.firstInstanceOf(DataMap.class);
85         Object JavaDoc root = query.getRoot();
86
87         if (root == null && map != null) {
88             validator.registerWarning("Query has no root", path);
89         }
90
91         // procedure query only supports procedure root
92 if (root instanceof Procedure) {
93             Procedure procedure = (Procedure) root;
94
95             // procedure may have been deleted...
96 if (map != null && map.getProcedure(procedure.getName()) != procedure) {
97                 validator.registerWarning("Invalid Procedure Root - "
98                         + procedure.getName(), path);
99             }
100
101             return;
102         }
103
104         if (root instanceof String JavaDoc) {
105             if (map != null && map.getProcedure(root.toString()) == null) {
106                 validator.registerWarning("Invalid Procedure Root - " + root, path);
107             }
108         }
109     }
110
111     protected void validateName(Query query, ProjectPath path, Validator validator) {
112         String JavaDoc name = query.getName();
113
114         // Must have name
115 if (Util.isEmptyString(name)) {
116             validator.registerError("Unnamed Query.", path);
117             return;
118         }
119
120         DataMap map = (DataMap) path.getObjectParent();
121         if (map == null) {
122             return;
123         }
124
125         // check for duplicate names in the parent context
126 Iterator JavaDoc it = map.getQueries().iterator();
127         while (it.hasNext()) {
128             Query otherQuery = (Query) it.next();
129             if (otherQuery == query) {
130                 continue;
131             }
132
133             if (name.equals(otherQuery.getName())) {
134                 validator.registerError("Duplicate Query name: " + name + ".", path);
135                 break;
136             }
137         }
138     }
139
140     protected void validateResultType(
141             ProcedureQuery query,
142             ProjectPath path,
143             Validator validator) {
144
145         if (query.isSelecting()
146                 && !query.isFetchingDataRows()
147                 && query.getResultClassName() == null) {
148             validator.registerWarning(
149                     "Missing result entity for Procedure query fetching DataObjects.",
150                     path);
151         }
152     }
153 }
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