Java Code Examples for org.eclipse.jdt.core.IPackageFragmentRoot#getKind()

/**
 * Returns the classpath entry of the given package fragment root. This is the raw entry, except
 * if the root is a referenced library, in which case it's the resolved entry.
 * 
 * @param root a package fragment root
 * @return the corresponding classpath entry
 * @throws JavaModelException if accessing the entry failed
 * @since 3.6
 */
public static IClasspathEntry getClasspathEntry(IPackageFragmentRoot root) throws JavaModelException {
	IClasspathEntry rawEntry= root.getRawClasspathEntry();
	int rawEntryKind= rawEntry.getEntryKind();
	switch (rawEntryKind) {
		case IClasspathEntry.CPE_LIBRARY:
		case IClasspathEntry.CPE_VARIABLE:
		case IClasspathEntry.CPE_CONTAINER: // should not happen, see https://bugs.eclipse.org/bugs/show_bug.cgi?id=305037
			if (root.isArchive() && root.getKind() == IPackageFragmentRoot.K_BINARY) {
				IClasspathEntry resolvedEntry= root.getResolvedClasspathEntry();
				if (resolvedEntry.getReferencingEntry() != null)
					return resolvedEntry;
				else
					return rawEntry;
			}
	}
	return rawEntry;
}
 

public static IPackageFragment getResourceBundlePackage(IJavaProject javaProject, String packageName, String resourceName) throws JavaModelException {
	IPackageFragmentRoot[] allRoots= javaProject.getAllPackageFragmentRoots();
	for (int i= 0; i < allRoots.length; i++) {
		IPackageFragmentRoot root= allRoots[i];
		if (root.getKind() == IPackageFragmentRoot.K_SOURCE) {
			IPackageFragment packageFragment= root.getPackageFragment(packageName);
			if (packageFragment.exists()) {
				Object[] resources= packageFragment.isDefaultPackage() ? root.getNonJavaResources() : packageFragment.getNonJavaResources();
				for (int j= 0; j < resources.length; j++) {
					Object object= resources[j];
					if (object instanceof IFile) {
						IFile file= (IFile) object;
						if (file.getName().equals(resourceName)) {
							return packageFragment;
						}
					}
				}
			}
		}
	}
	return null;
}
 

private Object getPackageFragmentObjectToOpen(IPackageFragment packageFragment) throws JavaModelException {
	ITypeRoot typeRoot= null;
	IPackageFragmentRoot root= (IPackageFragmentRoot) packageFragment.getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);
	if (root.getKind() == IPackageFragmentRoot.K_BINARY)
		typeRoot= (packageFragment).getClassFile(JavaModelUtil.PACKAGE_INFO_CLASS);
	else
		typeRoot= (packageFragment).getCompilationUnit(JavaModelUtil.PACKAGE_INFO_JAVA);
	if (typeRoot.exists())
		return typeRoot;
	
	Object[] nonJavaResources= (packageFragment).getNonJavaResources();
	for (Object nonJavaResource : nonJavaResources) {
		if (nonJavaResource instanceof IFile) {
			IFile file= (IFile) nonJavaResource;
			if (file.exists() && JavaModelUtil.PACKAGE_HTML.equals(file.getName())) {
				return file;
			}
		}
	}
	return packageFragment;
}
 

/**
 * Gets a reader for an package fragment's Javadoc comment content from the source attachment.
 * The content does contain only the text from the comment without the Javadoc leading star characters.
 * Returns <code>null</code> if the package fragment does not contain a Javadoc comment or if no source is available.
 * @param fragment The package fragment to get the Javadoc of.
 * @return Returns a reader for the Javadoc comment content or <code>null</code> if the member
 * does not contain a Javadoc comment or if no source is available
 * @throws JavaModelException is thrown when the package fragment's javadoc can not be accessed
 * @since 3.4
 */
private static Reader internalGetContentReader(IPackageFragment fragment) throws JavaModelException {
	IPackageFragmentRoot root= (IPackageFragmentRoot) fragment.getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);

	//1==> Handle the case when the documentation is present in package-info.java or package-info.class file
	boolean isBinary= root.getKind() == IPackageFragmentRoot.K_BINARY;
	ITypeRoot packageInfo;
	if (isBinary) {
		packageInfo= fragment.getClassFile(PACKAGE_INFO_CLASS);
	} else {
		packageInfo= fragment.getCompilationUnit(PACKAGE_INFO_JAVA);
	}
	if (packageInfo != null && packageInfo.exists()) {
		String source = packageInfo.getSource();
		//the source can be null for some of the class files
		if (source != null) {
			Javadoc javadocNode = getPackageJavadocNode(fragment, source);
			if (javadocNode != null) {
				int start = javadocNode.getStartPosition();
				int length = javadocNode.getLength();
				return new JavaDocCommentReader(source, start, start + length - 1);
			}
		}
	}
	return null;
}
 

private Object[] getPackageFragmentRoots(IJavaProject project) throws JavaModelException {
	ArrayList<Object> result= new ArrayList<Object>();

	IPackageFragmentRoot[] roots= project.getPackageFragmentRoots();
	for (int i= 0; i < roots.length; i++) {
		IPackageFragmentRoot root= roots[i];
		if (root.getKind() == IPackageFragmentRoot.K_SOURCE) {
			if (root.getPath().equals(root.getJavaProject().getPath())) {
				Object[] packageFragments= getPackageFragments(root);
				for (int k= 0; k < packageFragments.length; k++) {
					result.add(packageFragments[k]);
				}
			} else {
				result.add(root);
			}
		}
	}
	return result.toArray();
}
 

public static URL getJavadocBaseLocation(IJavaElement element) throws JavaModelException {
	if (element.getElementType() == IJavaElement.JAVA_PROJECT) {
		return getProjectJavadocLocation((IJavaProject) element);
	}

	IPackageFragmentRoot root = JavaModelUtil.getPackageFragmentRoot(element);
	if (root == null) {
		return null;
	}

	if (root.getKind() == IPackageFragmentRoot.K_BINARY) {
		IClasspathEntry entry = root.getResolvedClasspathEntry();
		URL javadocLocation = getLibraryJavadocLocation(entry);
		if (javadocLocation != null) {
			return getLibraryJavadocLocation(entry);
		}
		entry = root.getRawClasspathEntry();
		switch (entry.getEntryKind()) {
			case IClasspathEntry.CPE_LIBRARY:
			case IClasspathEntry.CPE_VARIABLE:
				return getLibraryJavadocLocation(entry);
			default:
				return null;
		}
	} else {
		return getProjectJavadocLocation(root.getJavaProject());
	}
}
 

private void collectCompilationUnits(IPackageFragmentRoot root, Collection<IJavaElement> result) throws JavaModelException {
	if (root.getKind() == IPackageFragmentRoot.K_SOURCE) {
		IJavaElement[] children= root.getChildren();
		for (int i= 0; i < children.length; i++) {
			collectCompilationUnits((IPackageFragment)children[i], result);
		}
	}
}
 

public static URL getJavadocBaseLocation(IJavaElement element) throws JavaModelException {
	if (element.getElementType() == IJavaElement.JAVA_PROJECT) {
		return getProjectJavadocLocation((IJavaProject) element);
	}

	IPackageFragmentRoot root= JavaModelUtil.getPackageFragmentRoot(element);
	if (root == null) {
		return null;
	}

	if (root.getKind() == IPackageFragmentRoot.K_BINARY) {
		IClasspathEntry entry= root.getResolvedClasspathEntry();
		URL javadocLocation= getLibraryJavadocLocation(entry);
		if (javadocLocation != null) {
			return getLibraryJavadocLocation(entry);
		}
		entry= root.getRawClasspathEntry();
		switch (entry.getEntryKind()) {
			case IClasspathEntry.CPE_LIBRARY:
			case IClasspathEntry.CPE_VARIABLE:
				return getLibraryJavadocLocation(entry);
			default:
				return null;
		}
	} else {
		return getProjectJavadocLocation(root.getJavaProject());
	}
}
 

private IClasspathEntry findJavaXValidationClasspathEntry() throws JavaModelException {
  IType type = javaProject.findType("javax.validation.Constraint");

  if (type == null) {
    return null;
  }

  IPackageFragmentRoot packageFragmentRoot = (IPackageFragmentRoot) type
      .getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);
  if (packageFragmentRoot.getKind() == IPackageFragmentRoot.K_BINARY) {
    return JavaCore.newLibraryEntry(packageFragmentRoot.getPath(), null, null);
  }

  return null;
}
 

/**
 * Find the classpath for get-dev.jar which is used to run super dev mode.
 *
 * @return IClasspathEntry for the path to gwt-dev.jar
 * @throws JavaModelException
 */
private IClasspathEntry findGwtCodeServerClasspathEntry() throws JavaModelException {
  IType type = javaProject.findType(GwtLaunchConfigurationProcessorUtilities.GWT_CODE_SERVER);
  if (type == null) {
    return null;
  }

  IPackageFragmentRoot packageFragmentRoot = (IPackageFragmentRoot) type
      .getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);
  if (packageFragmentRoot.getKind() == IPackageFragmentRoot.K_BINARY) {
    return JavaCore.newLibraryEntry(packageFragmentRoot.getPath(), null, null);
  }

  return null;
}
 

/**
 * Checks that the Java file for the given class name exists in the project.
 *
 * @param project
 *          the project, must not be {@code null}
 * @param className
 *          the class name, must not be {@code null}
 * @return whether the corresponding java file exists in the project
 */
public boolean isJavaFilePresent(final IProject project, final String className) {
  int packageSplitIndex = className.lastIndexOf('.');
  if (packageSplitIndex == -1) {
    throw new IllegalArgumentException(String.format("%s is a simple class name or not a class name at all.", className));
  }
  int fileNameEndIndex = className.indexOf('$');
  if (fileNameEndIndex == -1) {
    fileNameEndIndex = className.length();
  }
  String packageName = className.substring(0, packageSplitIndex);
  String fileName = className.substring(packageSplitIndex + 1, fileNameEndIndex) + ".java";
  try {
    if (project.hasNature(JavaCore.NATURE_ID)) {
      for (IPackageFragmentRoot root : JavaCore.create(project).getAllPackageFragmentRoots()) {
        if (root.getKind() == IPackageFragmentRoot.K_SOURCE) {
          for (IJavaElement element : root.getChildren()) {
            if (element instanceof IPackageFragment && packageName.equals(element.getElementName())
                && ((IPackageFragment) element).getCompilationUnit(fileName).exists()) {
              return true;
            }
          }
        }
      }
    }
  } catch (CoreException e) {
    LOGGER.error(String.format("Failed to read project %s.", project.getName()), e);
  }
  return false;
}
 

/**
 * @param prefix prefixString with thatthe sourcepackagefragmentroots must begin
 * @param replacementLength length of the text to replace
 * @return array with sourcepackagefragmentroots
 */
private ICompletionProposal[] createSourcePackageFragmentRootProposals(String prefix, int replacementLength) {
	List<JavaCompletionProposal> proposals= new ArrayList<JavaCompletionProposal>();
	try {
		IJavaProject[] projects= fRoot.getJavaProjects();
		for (int i= 0; i < projects.length; i++) {
			IJavaProject project= projects[i];
			IPackageFragmentRoot[] roots= project.getPackageFragmentRoots();
			for (int j= 0; j < roots.length; j++) {
				IPackageFragmentRoot root= roots[j];
				if (root.exists() && (root.getKind() == IPackageFragmentRoot.K_SOURCE)) {
					String name= root.getPath().toString();
					if (name.length() > 1) {
						name= name.substring(1);
					}
					if (name.startsWith(prefix)) {
						Image image= fLabelProvider.getImage(root);
						JavaCompletionProposal proposal= new JavaCompletionProposal(name, 0, replacementLength, image,
							name, 0);
						proposals.add(proposal);
					}
				}
			}
		}
	} catch (JavaModelException e) {
		// nothing to do
	}

	return proposals.toArray(new ICompletionProposal[proposals.size()]);
}
 

/**
 * Creates a selection dialog that lists all packages of the given Java project.
 * The caller is responsible for opening the dialog with <code>Window.open</code>,
 * and subsequently extracting the selected package (of type
 * <code>IPackageFragment</code>) via <code>SelectionDialog.getResult</code>.
 *
 * @param parent the parent shell of the dialog to be created
 * @param project the Java project
 * @param style flags defining the style of the dialog; the valid flags are:
 *   <code>IJavaElementSearchConstants.CONSIDER_BINARIES</code>, indicating that
 *   packages from binary package fragment roots should be included in addition
 *   to those from source package fragment roots;
 *   <code>IJavaElementSearchConstants.CONSIDER_REQUIRED_PROJECTS</code>, indicating that
 *   packages from required projects should be included as well.
 * @param filter the initial pattern to filter the set of packages. For example "com" shows
 * all packages starting with "com". The meta character '?' representing any character and
 * '*' representing any string are supported. Clients can pass an empty string if no filtering
 * is required.
 * @return a new selection dialog
 * @exception JavaModelException if the selection dialog could not be opened
 *
 * @since 2.0
 */
public static SelectionDialog createPackageDialog(Shell parent, IJavaProject project, int style, String filter) throws JavaModelException {
	Assert.isTrue((style | IJavaElementSearchConstants.CONSIDER_BINARIES | IJavaElementSearchConstants.CONSIDER_REQUIRED_PROJECTS) ==
		(IJavaElementSearchConstants.CONSIDER_BINARIES | IJavaElementSearchConstants.CONSIDER_REQUIRED_PROJECTS));

	IPackageFragmentRoot[] roots= null;
	if ((style & IJavaElementSearchConstants.CONSIDER_REQUIRED_PROJECTS) != 0) {
	    roots= project.getAllPackageFragmentRoots();
	} else {
		roots= project.getPackageFragmentRoots();
	}

	List<IPackageFragmentRoot> consideredRoots= null;
	if ((style & IJavaElementSearchConstants.CONSIDER_BINARIES) != 0) {
		consideredRoots= Arrays.asList(roots);
	} else {
		consideredRoots= new ArrayList<IPackageFragmentRoot>(roots.length);
		for (int i= 0; i < roots.length; i++) {
			IPackageFragmentRoot root= roots[i];
			if (root.getKind() != IPackageFragmentRoot.K_BINARY)
				consideredRoots.add(root);

		}
	}

	IJavaSearchScope searchScope= SearchEngine.createJavaSearchScope(consideredRoots.toArray(new IJavaElement[consideredRoots.size()]));
	BusyIndicatorRunnableContext context= new BusyIndicatorRunnableContext();
	if (style == 0 || style == IJavaElementSearchConstants.CONSIDER_REQUIRED_PROJECTS) {
		return createPackageDialog(parent, context, searchScope, false, true, filter);
	} else {
		return createPackageDialog(parent, context, searchScope, false, false, filter);
	}
}
 

private boolean isEnabled(IStructuredSelection selection) {
	Object[] selected= selection.toArray();
	for (int i= 0; i < selected.length; i++) {
		try {
			if (selected[i] instanceof IJavaElement) {
				IJavaElement elem= (IJavaElement)selected[i];
				if (elem.exists()) {
					switch (elem.getElementType()) {
						case IJavaElement.TYPE:
							return elem.getParent().getElementType() == IJavaElement.COMPILATION_UNIT; // for browsing perspective
						case IJavaElement.COMPILATION_UNIT:
							return true;
						case IJavaElement.IMPORT_CONTAINER:
							return true;
						case IJavaElement.PACKAGE_FRAGMENT:
						case IJavaElement.PACKAGE_FRAGMENT_ROOT:
							IPackageFragmentRoot root= (IPackageFragmentRoot)elem.getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);
							return (root.getKind() == IPackageFragmentRoot.K_SOURCE);
						case IJavaElement.JAVA_PROJECT:
							// https://bugs.eclipse.org/bugs/show_bug.cgi?id=65638
							return true;
					}
				}
			} else if (selected[i] instanceof LogicalPackage) {
				return true;
			} else if (selected[i] instanceof IWorkingSet) {
				IWorkingSet workingSet= (IWorkingSet) selected[i];
				return IWorkingSetIDs.JAVA.equals(workingSet.getId());
			}
		} catch (JavaModelException e) {
			if (!e.isDoesNotExist()) {
				JavaPlugin.log(e);
			}
		}
	}
	return false;
}
 

private void collectRelevantFiles(IPackageFragmentRoot root, Multimap<IProject, IFile> result)
		throws JavaModelException {
	if (root.getKind() == IPackageFragmentRoot.K_SOURCE) {
		IJavaElement[] children = root.getChildren();
		for (int i = 0; i < children.length; i++) {
			collectRelevantFiles((IPackageFragment) children[i], result);
		}

	}
}
 

@Override
public boolean select(Viewer viewer, Object parent, Object element) {
	if (element instanceof IPackageFragmentRoot) {
		IPackageFragmentRoot fragmentRoot= (IPackageFragmentRoot)element;
		try {
			return (fragmentRoot.getKind() == IPackageFragmentRoot.K_SOURCE);
		} catch (JavaModelException e) {
			return false;
		}
	}
	return super.select(viewer, parent, element);
}
 

public JavadocHelpContext(IContext context, Object[] elements) throws JavaModelException {
	Assert.isNotNull(elements);
	if (context instanceof IContext2)
		fTitle= ((IContext2)context).getTitle();

	List<IHelpResource> helpResources= new ArrayList<IHelpResource>();

	String javadocSummary= null;
	for (int i= 0; i < elements.length; i++) {
		if (elements[i] instanceof IJavaElement) {
			IJavaElement element= (IJavaElement) elements[i];
			// if element isn't on the build path skip it
			if (!ActionUtil.isOnBuildPath(element))
				continue;

			// Create Javadoc summary
			if (BUG_85721_FIXED) {
				if (javadocSummary == null) {
					javadocSummary= retrieveText(element);
					if (javadocSummary != null) {
						String elementLabel= JavaElementLabels.getTextLabel(element, JavaElementLabels.ALL_DEFAULT);

						// FIXME: needs to be NLSed once the code becomes active
						javadocSummary= "<b>Javadoc for " + elementLabel + ":</b><br>" + javadocSummary;   //$NON-NLS-1$//$NON-NLS-2$
					}
				} else {
					javadocSummary= ""; // no Javadoc summary for multiple selection //$NON-NLS-1$
				}
			}

			URL url= JavaUI.getJavadocLocation(element, true);
			if (url == null || doesNotExist(url)) {
				IPackageFragmentRoot root= JavaModelUtil.getPackageFragmentRoot(element);
				if (root != null) {
					url= JavaUI.getJavadocBaseLocation(element);
					if (root.getKind() == IPackageFragmentRoot.K_SOURCE) {
						element= element.getJavaProject();
					} else {
						element= root;
					}
					url= JavaUI.getJavadocLocation(element, false);
				}
			}
			if (url != null) {
				IHelpResource javaResource= new JavaUIHelpResource(element, getURLString(url));
				helpResources.add(javaResource);
			}
		}
	}

	// Add static help topics
	if (context != null) {
		IHelpResource[] resources= context.getRelatedTopics();
		if (resources != null) {
			for (int j= 0; j < resources.length; j++) {
				helpResources.add(resources[j]);
			}
		}
	}

	fHelpResources= helpResources.toArray(new IHelpResource[helpResources.size()]);

	if (context != null)
		fText= context.getText();

	if (BUG_85721_FIXED) {
		if (javadocSummary != null && javadocSummary.length() > 0) {
			if (fText != null)
				fText= context.getText() + "<br><br>" + javadocSummary; //$NON-NLS-1$
			else
				fText= javadocSummary;
		}
	}

	if (fText == null)
		fText= "";  //$NON-NLS-1$

}
 

/**
 * Computes the adornment flags for the given element.
 *
 * @param obj the element to compute the flags for
 *
 * @return the adornment flags
 */
protected int computeAdornmentFlags(Object obj) {
	try {
		if (obj instanceof IJavaElement) {
			IJavaElement element= (IJavaElement) obj;
			int type= element.getElementType();
			switch (type) {
				case IJavaElement.JAVA_MODEL:
				case IJavaElement.JAVA_PROJECT:
				case IJavaElement.PACKAGE_FRAGMENT_ROOT:
					int flags= getErrorTicksFromMarkers(element.getResource(), IResource.DEPTH_INFINITE, null);
					switch (type) {
						case IJavaElement.PACKAGE_FRAGMENT_ROOT:
							IPackageFragmentRoot root= (IPackageFragmentRoot) element;
							if (flags != ERRORTICK_ERROR && root.getKind() == IPackageFragmentRoot.K_SOURCE && isIgnoringOptionalProblems(root.getRawClasspathEntry())) {
								flags= ERRORTICK_IGNORE_OPTIONAL_PROBLEMS;
							}
							break;
						case IJavaElement.JAVA_PROJECT:
							IJavaProject project= (IJavaProject) element;
							if (flags != ERRORTICK_ERROR && flags != ERRORTICK_BUILDPATH_ERROR && isIgnoringOptionalProblems(project)) {
								flags= ERRORTICK_IGNORE_OPTIONAL_PROBLEMS;
							}
							break;
					}
					return flags;
				case IJavaElement.PACKAGE_FRAGMENT:
					return getPackageErrorTicksFromMarkers((IPackageFragment) element);
				case IJavaElement.COMPILATION_UNIT:
				case IJavaElement.CLASS_FILE:
					return getErrorTicksFromMarkers(element.getResource(), IResource.DEPTH_ONE, null);
				case IJavaElement.PACKAGE_DECLARATION:
				case IJavaElement.IMPORT_DECLARATION:
				case IJavaElement.IMPORT_CONTAINER:
				case IJavaElement.TYPE:
				case IJavaElement.INITIALIZER:
				case IJavaElement.METHOD:
				case IJavaElement.FIELD:
				case IJavaElement.LOCAL_VARIABLE:
					ICompilationUnit cu= (ICompilationUnit) element.getAncestor(IJavaElement.COMPILATION_UNIT);
					if (cu != null) {
						ISourceReference ref= (type == IJavaElement.COMPILATION_UNIT) ? null : (ISourceReference) element;
						// The assumption is that only source elements in compilation unit can have markers
						IAnnotationModel model= isInJavaAnnotationModel(cu);
						int result= 0;
						if (model != null) {
							// open in Java editor: look at annotation model
							result= getErrorTicksFromAnnotationModel(model, ref);
						} else {
							result= getErrorTicksFromMarkers(cu.getResource(), IResource.DEPTH_ONE, ref);
						}
						fCachedRange= null;
						return result;
					}
					break;
				default:
			}
		} else if (obj instanceof IResource) {
			return getErrorTicksFromMarkers((IResource) obj, IResource.DEPTH_INFINITE, null);
		}
	} catch (CoreException e) {
		if (e instanceof JavaModelException) {
			if (((JavaModelException) e).isDoesNotExist()) {
				return 0;
			}
		}
		if (e.getStatus().getCode() == IResourceStatus.MARKER_NOT_FOUND) {
			return 0;
		}

		JavaPlugin.log(e);
	}
	return 0;
}
 

/**
 * Checks whether the archive referenced by the package fragment root is not
 * shared with multiple java projects in the workspace.
 *
 * @param root
 *            the package fragment root
 * @param monitor
 *            the progress monitor to use
 * @return the status of the operation
 */
private static RefactoringStatus checkPackageFragmentRoots(final IPackageFragmentRoot root, final IProgressMonitor monitor) {
	final RefactoringStatus status= new RefactoringStatus();
	try {
		monitor.beginTask(JarImportMessages.JarImportWizard_prepare_import, 100);
		final IWorkspaceRoot workspace= ResourcesPlugin.getWorkspace().getRoot();
		if (workspace != null) {
			final IJavaModel model= JavaCore.create(workspace);
			if (model != null) {
				try {
					final URI uri= getLocationURI(root.getRawClasspathEntry());
					if (uri != null) {
						final IJavaProject[] projects= model.getJavaProjects();
						final IProgressMonitor subMonitor= new SubProgressMonitor(monitor, 100, SubProgressMonitor.SUPPRESS_SUBTASK_LABEL);
						try {
							subMonitor.beginTask(JarImportMessages.JarImportWizard_prepare_import, projects.length * 100);
							for (int index= 0; index < projects.length; index++) {
								final IPackageFragmentRoot[] roots= projects[index].getPackageFragmentRoots();
								final IProgressMonitor subsubMonitor= new SubProgressMonitor(subMonitor, 100, SubProgressMonitor.SUPPRESS_SUBTASK_LABEL);
								try {
									subsubMonitor.beginTask(JarImportMessages.JarImportWizard_prepare_import, roots.length);
									for (int offset= 0; offset < roots.length; offset++) {
										final IPackageFragmentRoot current= roots[offset];
										if (!current.equals(root) && current.getKind() == IPackageFragmentRoot.K_BINARY) {
											final IClasspathEntry entry= current.getRawClasspathEntry();
											if (entry.getEntryKind() == IClasspathEntry.CPE_LIBRARY) {
												final URI location= getLocationURI(entry);
												if (uri.equals(location))
													status.addFatalError(Messages.format(JarImportMessages.JarImportWizard_error_shared_jar, new String[] { JavaElementLabels.getElementLabel(current.getJavaProject(), JavaElementLabels.ALL_DEFAULT) }));
											}
										}
										subsubMonitor.worked(1);
									}
								} finally {
									subsubMonitor.done();
								}
							}
						} finally {
							subMonitor.done();
						}
					}
				} catch (CoreException exception) {
					status.addError(exception.getLocalizedMessage());
				}
			}
		}
	} finally {
		monitor.done();
	}
	return status;
}
 

public boolean doCheckUniqueInProject(QualifiedName name, JvmDeclaredType type) throws JavaModelException {
	IJavaProject javaProject = javaProjectProvider.getJavaProject(type.eResource().getResourceSet());
	getContext().put(ProjectAwareUniqueClassNameValidator.OUTPUT_CONFIGS,
			outputConfigurationProvider.getOutputConfigurations(type.eResource()));

	String packageName = type.getPackageName();
	String typeName = type.getSimpleName();
	IndexManager indexManager = JavaModelManager.getIndexManager();
	List<IPackageFragmentRoot> sourceFolders = new ArrayList<>();
	for (IPackageFragmentRoot root : javaProject.getPackageFragmentRoots()) {
		if (root.getKind() == IPackageFragmentRoot.K_SOURCE) {
			sourceFolders.add(root);
		}
	}

	if (sourceFolders.isEmpty() || indexManager.awaitingJobsCount() > 0) {
		// still indexing - don't enter a busy wait loop but ask the source folders directly
		SourceTraversal sourceTraversal = doCheckUniqueInProjectSource(packageName != null ? packageName : "", typeName, type,
				sourceFolders);
		if (sourceTraversal == SourceTraversal.DUPLICATE) {
			return false;
		} else if (sourceTraversal == SourceTraversal.UNIQUE) {
			return true;
		}
	}

	Set<String> workingCopyPaths = new HashSet<>();
	ICompilationUnit[] copies = getWorkingCopies(type);
	if (copies != null) {
		for (ICompilationUnit workingCopy : copies) {
			IPath path = workingCopy.getPath();
			if (javaProject.getPath().isPrefixOf(path) && !isDerived(workingCopy.getResource())) {
				if (workingCopy.getPackageDeclaration(packageName).exists()) {
					IType result = workingCopy.getType(typeName);
					if (result.exists()) {
						addIssue(type, workingCopy.getElementName());
						return false;
					}
				}
				workingCopyPaths.add(workingCopy.getPath().toString());
			}
		}
	}

	// The code below is adapted from BasicSearchEnginge.searchAllSecondaryTypes
	// The Index is ready, query it for a secondary type 
	char[] pkg = packageName == null ? CharOperation.NO_CHAR : packageName.toCharArray();
	TypeDeclarationPattern pattern = new TypeDeclarationPattern(pkg, //
			CharOperation.NO_CHAR_CHAR, // top level type - no enclosing type names
			typeName.toCharArray(), //
			IIndexConstants.TYPE_SUFFIX, //
			SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE);

	IndexQueryRequestor searchRequestor = new IndexQueryRequestor() {

		@Override
		public boolean acceptIndexMatch(String documentPath, SearchPattern indexRecord, SearchParticipant participant,
				AccessRuleSet access) {
			if (workingCopyPaths.contains(documentPath)) {
				return true; // filter out working copies
			}
			IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(documentPath));
			if (!isDerived(file)) {
				addIssue(type, file.getName());
				return false;
			}
			return true;
		}
	};

	try {
		SearchParticipant searchParticipant = BasicSearchEngine.getDefaultSearchParticipant(); // Java search only
		IJavaSearchScope javaSearchScope = BasicSearchEngine.createJavaSearchScope(sourceFolders.toArray(new IJavaElement[0]));
		PatternSearchJob patternSearchJob = new PatternSearchJob(pattern, searchParticipant, javaSearchScope, searchRequestor);
		indexManager.performConcurrentJob(patternSearchJob, IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH, null);
		return true;
	} catch (Throwable OperationCanceledException) {
		return false;
	}
}