1 package pt.digitalis.maven.ormgenerator;
2
3 import org.xml.sax.Attributes;
4 import org.xml.sax.SAXException;
5 import org.xml.sax.helpers.DefaultHandler;
6
7 import pt.digitalis.maven.ormgenerator.utils.DAOFinder;
8
9 /**
10 * This class should handler the data in the configuration xml and put it
11 *
12 * @author António Silva <a href="mailto:asilva@digitalis.pt">asilva@digitalis.pt</a>
13 * @created Nov 6, 2007
14 */
15 public class ServiceHandler extends DefaultHandler {
16
17 /** The DAO interface classes base package directory */
18 private String basePackageDir;
19
20 /**
21 * This flag indicates if we are inside a service xml tag
22 */
23 private boolean inService = false;
24
25 /**
26 * This is a temporary variable that holds the service that is being build at the moment
27 */
28 private Services service;
29
30 /**
31 * Holds all the structure of the xml built
32 */
33 private ServiceCfg serviceCfg = new ServiceCfg();
34
35 /**
36 * Default constructor
37 *
38 * @param basePackage
39 */
40 public ServiceHandler(String basePackage) {
41 this.basePackageDir = basePackage;
42 }
43
44 /**
45 * Receive notification of the end of an element and should save the information that is recorded in the data object
46 * to the main object.
47 *
48 * @param uri
49 * The Namespace URI, or the empty string if the element has no Namespace URI or if Namespace processing
50 * is not being performed.
51 * @param localName
52 * The local name (without prefix), or the empty string if Namespace processing is not being performed.
53 * @param qName
54 * The qualified name (with prefix), or the empty string if qualified names are not available.
55 * @exception org.xml.sax.SAXException
56 * Any SAX exception, possibly wrapping another exception.
57 * @see org.xml.sax.ContentHandler#endElement
58 */
59 @Override
60 public void endElement(String uri, String localName, String qName) throws SAXException {
61 if (qName.equals("service")) {
62 this.setInService(false);
63 this.getServiceCfg().getServices().add(service);
64 }
65 }
66
67 /**
68 * @return the service
69 */
70 private Services getService() {
71 return service;
72 }
73
74 /**
75 * The Service Configuration built by this class based on the xml this should only be obtained after running parser
76 *
77 * @return the serviceCfg
78 */
79 public ServiceCfg getServiceCfg() {
80 return serviceCfg;
81 }
82
83 /**
84 * @return the inService
85 */
86 private boolean isInService() {
87 return inService;
88 }
89
90 /**
91 * @param inService
92 * the inService to set
93 */
94 private void setInService(boolean inService) {
95 this.inService = inService;
96 }
97
98 /**
99 * @param service
100 * the service to set
101 */
102 private void setService(Services service) {
103 this.service = service;
104 }
105
106 /**
107 * Receive notification of the start of an element and starts the transformation of xml tags to the data objects.
108 *
109 * @param uri
110 * The NameSpace URI, or the empty string if the element has no NameSpace URI or if NameSpace processing
111 * is not being performed.
112 * @param localName
113 * The local name (without prefix), or the empty string if NameSpace processing is not being performed.
114 * @param qName
115 * The qualified name (with prefix), or the empty string if qualified names are not available.
116 * @param attributes
117 * The attributes attached to the element. If there are no attributes, it shall be an empty Attributes
118 * object.
119 * @exception org.xml.sax.SAXException
120 * Any SAX exception, possibly wrapping another exception.
121 * @see org.xml.sax.ContentHandler#startElement
122 */
123 @Override
124 public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
125 if (qName.equals("service")) {
126 this.setInService(true);
127 Services localServicePkgs = new Services();
128 localServicePkgs.setName(attributes.getValue("name"));
129 this.setService(localServicePkgs);
130 }
131 if (this.isInService()) {
132 if (qName.equals("uses")) {
133 if (attributes.getIndex("dao") != -1) {
134 String daoEntityName = attributes.getValue("dao");
135 DAO dao = DAOFinder.findDAO(basePackageDir, daoEntityName);
136
137 if (dao != null)
138 this.getService().getLinkedDAOs().add(dao);
139 }
140 if (attributes.getIndex("service") != -1) {
141 this.getService().getLinkedServices().add(attributes.getValue("service"));
142 }
143 }
144 }
145 }
146 }