|
1
11 package org.eclipse.jdt.launching.sourcelookup;
12
13
14 import java.io.IOException  ;
15 import java.io.StringReader ;
16 import com.ibm.icu.text.MessageFormat;
17 import java.util.ArrayList ;
18
19 import javax.xml.parsers.DocumentBuilder ;
20 import javax.xml.parsers.DocumentBuilderFactory ;
21 import javax.xml.parsers.ParserConfigurationException ;
22 import javax.xml.transform.TransformerException ;
23
24 import org.eclipse.core.resources.IProject;
25 import org.eclipse.core.resources.ResourcesPlugin;
26 import org.eclipse.core.runtime.CoreException;
27 import org.eclipse.core.runtime.IStatus;
28 import org.eclipse.core.runtime.PlatformObject;
29 import org.eclipse.core.runtime.Status;
30 import org.eclipse.jdt.core.IJavaProject;
31 import org.eclipse.jdt.core.IPackageFragmentRoot;
32 import org.eclipse.jdt.core.JavaCore;
33 import org.eclipse.jdt.core.JavaModelException;
34 import org.eclipse.jdt.internal.launching.LaunchingMessages;
35 import org.eclipse.jdt.internal.launching.LaunchingPlugin;
36 import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
37 import org.w3c.dom.Document ;
38 import org.w3c.dom.Element ;
39 import org.xml.sax.InputSource ;
40 import org.xml.sax.SAXException ;
41 import org.xml.sax.helpers.DefaultHandler ;
42
43
61 public class JavaProjectSourceLocation extends PlatformObject implements IJavaSourceLocation {
62
63
66 private IJavaProject fProject;
67
68
71 private IJavaSourceLocation[] fRootLocations = null;
72
73
77 public JavaProjectSourceLocation() {
78 }
79
80
86 public JavaProjectSourceLocation(IJavaProject project) {
87 setJavaProject(project);
88 }
89
90
93 public Object findSourceElement(String name) throws CoreException {
94 if (fRootLocations != null) {
95 for (int i = 0; i < fRootLocations.length; i++) {
96 Object element = fRootLocations[i].findSourceElement(name);
97 if (element != null) {
98 return element;
99 }
100 }
101 }
102 return null;
103 }
104
105
111 private void setJavaProject(IJavaProject project) {
112 fProject = project;
113 fRootLocations = null;
114 if (fProject != null) {
115 try {
116 IPackageFragmentRoot[] roots = project.getPackageFragmentRoots();
117 ArrayList list = new ArrayList (roots.length);
118
119 for (int i = 0; i < roots.length; i++) {
120 if (roots[i].getKind() == IPackageFragmentRoot.K_SOURCE) {
121 list.add(new PackageFragmentRootSourceLocation(roots[i]));
122 }
123 }
124 fRootLocations = (IJavaSourceLocation[])list.toArray(new IJavaSourceLocation[list.size()]);
125 } catch (JavaModelException e) {
126 LaunchingPlugin.log(e);
127 }
128 }
129 }
130
131
137 public IJavaProject getJavaProject() {
138 return fProject;
139 }
140
141
144 public boolean equals(Object object) {
145 return object instanceof JavaProjectSourceLocation &&
146 getJavaProject().equals(((JavaProjectSourceLocation)object).getJavaProject());
147 }
148
149
152 public int hashCode() {
153 return getJavaProject().hashCode();
154 }
155
156
159 public String getMemento() throws CoreException {
160 try {
161 Document doc = LaunchingPlugin.getDocument();
162 Element node = doc.createElement("javaProjectSourceLocation"); doc.appendChild(node);
164 node.setAttribute("name", getJavaProject().getElementName()); return LaunchingPlugin.serializeDocument(doc);
166 } catch (IOException e) {
167 abort(MessageFormat.format(LaunchingMessages.JavaProjectSourceLocation_Unable_to_create_memento_for_Java_project_source_location__0__1, new String [] {getJavaProject().getElementName()}), e);
168 } catch (ParserConfigurationException e) {
169 abort(MessageFormat.format(LaunchingMessages.JavaProjectSourceLocation_Unable_to_create_memento_for_Java_project_source_location__0__1, new String [] {getJavaProject().getElementName()}), e);
170 } catch (TransformerException e) {
171 abort(MessageFormat.format(LaunchingMessages.JavaProjectSourceLocation_Unable_to_create_memento_for_Java_project_source_location__0__1, new String [] {getJavaProject().getElementName()}), e);
172 }
173 return null;
175 }
176
177
180 public void initializeFrom(String memento) throws CoreException {
181 Exception ex = null;
182 try {
183 Element root = null;
184 DocumentBuilder parser =
185 DocumentBuilderFactory.newInstance().newDocumentBuilder();
186 parser.setErrorHandler(new DefaultHandler ());
187 StringReader reader = new StringReader (memento);
188 InputSource source = new InputSource (reader);
189 root = parser.parse(source).getDocumentElement();
190
191 String name = root.getAttribute("name"); if (isEmpty(name)) {
193 abort(LaunchingMessages.JavaProjectSourceLocation_Unable_to_initialize_source_location___missing_project_name_3, null);
194 } else {
195 IProject proj = ResourcesPlugin.getWorkspace().getRoot().getProject(name);
196 setJavaProject(JavaCore.create(proj));
197 }
198 return;
199 } catch (ParserConfigurationException e) {
200 ex = e;
201 } catch (SAXException e) {
202 ex = e;
203 } catch (IOException e) {
204 ex = e;
205 }
206 abort(LaunchingMessages.JavaProjectSourceLocation_Exception_occurred_initializing_source_location__4, ex);
207 }
208
209 private boolean isEmpty(String string) {
210 return string == null || string.length() == 0;
211 }
212
213
216 private void abort(String message, Throwable e) throws CoreException {
217 IStatus s = new Status(IStatus.ERROR, LaunchingPlugin.getUniqueIdentifier(), IJavaLaunchConfigurationConstants.ERR_INTERNAL_ERROR, message, e);
218 throw new CoreException(s);
219 }
220
221 }
222 |
Popular Tags |
Java API By Example, From Geeks To Geeks.