Attachment 4518 Details for Bug 35528 – Proposed implementation as an attachment

Proposed implementation as an attachment

a.txt (text/plain), 3.34 KB, created by Philipe Mulet

on 2003-04-09 07:06:23 EDT

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Creator: Philipe Mulet

Created: 2003-04-09 07:06:23 EDT

Size: 3.34 KB

patch

obsolete

>/**
> * Update cycle markers for all java projects
> */
>public static void updateAllCycleMarkers() throws JavaModelException {
>	
>	JavaModelManager manager = JavaModelManager.getJavaModelManager();
>	IJavaProject[] projects = manager.getJavaModel().getJavaProjects();
>	IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
>
>	HashSet cycleParticipants = new HashSet();
>	HashSet alreadyTraversed = new HashSet();
>	int length = projects.length;
>	
>	// compute cycle participants
>	ArrayList prereqChain = new ArrayList();
>	for (int i = 0; i < length; i++){
>		JavaProject project = (JavaProject)projects[i];
>		if (!alreadyTraversed.contains(project)){
>			prereqChain.clear();
>			project.updateCycleParticipants(null, prereqChain, cycleParticipants, workspaceRoot, alreadyTraversed);
>		}
>	}
>	
>	for (int i = 0; i < length; i++){
>		JavaProject project = (JavaProject)projects[i];
>		
>		if (cycleParticipants.contains(project)){
>			IMarker cycleMarker = project.getCycleMarker();
>			String circularCPOption = project.getOption(JavaCore.CORE_CIRCULAR_CLASSPATH, true);
>			int circularCPSeverity = JavaCore.ERROR.equals(circularCPOption) ? IMarker.SEVERITY_ERROR : IMarker.SEVERITY_WARNING;
>			if (cycleMarker != null) {
>				// update existing cycle marker if needed
>				try {
>					int existingSeverity = ((Integer)cycleMarker.getAttribute(IMarker.SEVERITY)).intValue();
>					if (existingSeverity != circularCPSeverity) {
>						cycleMarker.setAttribute(IMarker.SEVERITY, circularCPSeverity);
>					}
>				} catch (CoreException e) {
>					throw new JavaModelException(e);
>				}
>			} else {
>				// create new marker
>				project.createClasspathProblemMarker(
>					new JavaModelStatus(IJavaModelStatusConstants.CLASSPATH_CYCLE, project)); 
>			}
>		} else {
>			project.flushClasspathProblemMarkers(true, false);
>		}			
>	}
>}
>
>/**
> * If a cycle is detected, then cycleParticipants contains all the project involved in this cycle (directly and indirectly),
> * no cycle if the set is empty (and started empty)
> */
>public void updateCycleParticipants(
>		IClasspathEntry[] preferredClasspath, 
>		ArrayList prereqChain, 
>		HashSet cycleParticipants, 
>		IWorkspaceRoot workspaceRoot,
>		HashSet alreadyTraversed){
>			
>	prereqChain.add(this);
>	try {
>		IClasspathEntry[] classpath = preferredClasspath == null ? getResolvedClasspath(true) : preferredClasspath;
>		for (int i = 0, length = classpath.length; i < length; i++) {
>			IClasspathEntry entry = classpath[i];
>			
>			if (entry.getEntryKind() == IClasspathEntry.CPE_PROJECT){
>				IPath entryPath = entry.getPath();
>				IResource member = workspaceRoot.findMember(entryPath);
>				if (member != null && member.getType() == IResource.PROJECT){
>					JavaProject project = (JavaProject)JavaCore.create((IProject)member);
>					int index = cycleParticipants.contains(project) ? 0 : prereqChain.indexOf(project);
>					if (index >= 0) { // refer to cycle, or in cycle itself
>						for (int size = prereqChain.size(); index < size; index++) {
>							cycleParticipants.add(prereqChain.get(index)); 
>						}
>					} else {
>						if (!alreadyTraversed.contains(project)) {
>							project.updateCycleParticipants(null, prereqChain, cycleParticipants, workspaceRoot, alreadyTraversed);
>						}
>					}
>				}
>			}
>		}
>	} catch(JavaModelException e){
>	}
>	prereqChain.remove(this);
>	alreadyTraversed.add(this);
>}

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Attachments on bug 35528: 4518