Examples of org.eclipse.jdt.core.IClasspathEntry

org.eclipse.jdt.core.IClasspathEntry
An entry on a Java project classpath identifying one or more package fragment roots. A classpath entry has a content kind (either source, {@link IPackageFragmentRoot#K_SOURCE}, or binary, {@link IPackageFragmentRoot#K_BINARY}), which is inherited by each package fragment root and package fragment associated with the entry.
A classpath entry can refer to any of the following:
- Source code in the current project. In this case, the entry identifies a root folder in the current project containing package fragments and source files with one of the {@link JavaCore#getJavaLikeExtensions() Java-like extensions}. The root folder itself represents a default package, subfolders represent package fragments, and files with a Java-like extension (e.g. .java files) represent compilation units. All compilation units will be compiled when the project is built. The classpath entry must specify the absolute path to the root folder. Entries of this kind are associated with the {@link #CPE_SOURCE} constant.Source classpath entries can carry inclusion and exclusion patterns for selecting which source files appear as compilation units and get compiled when the project is built.
- A binary library in the current project, in another project, or in the external file system. In this case the entry identifies a JAR (or root folder) containing package fragments and .class files. The classpath entry must specify the absolute path to the JAR (or root folder), and in case it refers to an external JAR, then there is no associated resource in the workbench. Entries of this kind are associated with the {@link #CPE_LIBRARY} constant.
- A required project. In this case the entry identifies another project in the workspace. The required project is used as a binary library when compiling (that is, the builder looks in the output location of the required project for required .class files when building). When performing other "development" operations - such as code assist, code resolve, type hierarchy creation, etc. - the source code of the project is referred to. Thus, development is performed against a required project's source code, and compilation is performed against a required project's last built state. The classpath entry must specify the absolute path to the project. Entries of this kind are associated with the {@link #CPE_PROJECT}constant. Note: referencing a required project with a classpath entry refers to the source code or associated .class files located in its output location. It will also automatically include any other libraries or projects that the required project's classpath refers to, iff the corresponding classpath entries are tagged as being exported ( {@link IClasspathEntry#isExported}). Unless exporting some classpath entries, classpaths are not chained by default - each project must specify its own classpath in its entirety.
- A path beginning in a classpath variable defined globally to the workspace. Entries of this kind are associated with the {@link #CPE_VARIABLE} constant.Classpath variables are created using {@link JavaCore#setClasspathVariable(String,IPath,org.eclipse.core.runtime.IProgressMonitor)}, and gets resolved, to either a project or library entry, using {@link JavaCore#getResolvedClasspathEntry(IClasspathEntry)}. It is also possible to register an automatic initializer ( {@link ClasspathVariableInitializer}), which will be invoked through the extension point "org.eclipse.jdt.core.classpathVariableInitializer". After resolution, a classpath variable entry may either correspond to a project or a library entry.
- A named classpath container identified by its container path. A classpath container provides a way to indirectly reference a set of classpath entries through a classpath entry of kind {@link #CPE_CONTAINER}. Typically, a classpath container can be used to describe a complex library composed of multiple JARs, projects or classpath variables, considering also that containers can be mapped differently on each project. Several projects can reference the same generic container path, but have each of them actually bound to a different container object. The container path is a formed by a first ID segment followed with extra segments, which can be used as additional hints for resolving this container reference. If no container was ever recorded for this container path onto this project (using {@link JavaCore#setClasspathContainer}, then a {@link ClasspathContainerInitializer} will be activated if any was registered for thiscontainer ID onto the extension point "org.eclipse.jdt.core.classpathContainerInitializer". A classpath container entry can be resolved explicitly using {@link JavaCore#getClasspathContainer}and the resulting container entries can contain any non-container entry. In particular, it may contain variable entries, which in turn needs to be resolved before being directly used.
  Also note that the container resolution APIs include an IJavaProject argument, so as to allow the same container path to be interpreted in different ways for different projects.
The result of {@link IJavaProject#getResolvedClasspath} will have all entries of type{@link #CPE_VARIABLE} and {@link #CPE_CONTAINER} resolved to a set of{@link #CPE_SOURCE}, {@link #CPE_LIBRARY} or {@link #CPE_PROJECT}classpath entries.
Any classpath entry other than a source folder (kind {@link #CPE_SOURCE}) can be marked as being exported. Exported entries are automatically contributed to dependent projects, along with the project's default output folder, which is implicitly exported, and any auxiliary output folders specified on source classpath entries. The project's output folder(s) are always listed first, followed by the any exported entries.
Classpath entries can be created via methods on {@link JavaCore}.
@see JavaCore#newLibraryEntry(org.eclipse.core.runtime.IPath,org.eclipse.core.runtime.IPath,org.eclipse.core.runtime.IPath) @see JavaCore#newProjectEntry(org.eclipse.core.runtime.IPath) @see JavaCore#newSourceEntry(org.eclipse.core.runtime.IPath) @see JavaCore#newVariableEntry(org.eclipse.core.runtime.IPath,org.eclipse.core.runtime.IPath,org.eclipse.core.runtime.IPath) @see JavaCore#newContainerEntry(org.eclipse.core.runtime.IPath) @see ClasspathVariableInitializer @see ClasspathContainerInitializer @noimplement This interface is not intended to be implemented by clients.

    if (libs != null) {          
      BeanMapPreferencesStore<IPath, LibraryClasspathEntryInformation> store = WGADesignerPlugin.getDefault().getLibraryClasspathEntryInformationStore();
      store.load();
      Map<IPath, LibraryClasspathEntryInformation> infos = store.getBeans();
      for( File lib: libs ) {
        IClasspathEntry entry = JavaCore.newLibraryEntry(new Path(lib.getAbsolutePath()), null, null);
        IPath srcPath = jarToProjectSource.get(lib.getName());
        if (srcPath != null) {
          if (!infos.containsKey(new Path(lib.getAbsolutePath()))) {
            LibraryClasspathEntryInformation info = new LibraryClasspathEntryInformation();
            info.setSourcePath(srcPath);
            store.getBeans().put(entry.getPath(), info);
          }
        }
          entryList.add(entry);
      }
      store.flush();

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            if (editor == null) {
                return;
            }
            IPackageFragmentRoot root = editor.getPackageFragmentRoot(editor.getClassFile());
            try {
                IClasspathEntry entry = root.getRawClasspathEntry();
                IPath containerPath = null;
                IJavaProject javaProject = root.getJavaProject();
                if (entry.getEntryKind() == IClasspathEntry.CPE_CONTAINER) {
                    containerPath = entry.getPath();
                    IClasspathContainer container = JavaCore
                        .getClasspathContainer(containerPath, javaProject);
                    if(!isSourceAttachmentPossible(containerPath, javaProject)){
                        editor.setSourceAttachmentPossible(false);
                        attachAction.setEnabled(false);
                        BytecodeOutlinePlugin
                            .error("Unable to configure source attachment:\n"
                                + "classpath entry '" + containerPath +
                                        "'\nis either read-only "
                                + "or source attachment is not supported...", null);
                        return;
                    }
                    entry = JavaModelUtil.findEntryInContainer(container, root
                        .getPath());
                }


                Shell shell = Display.getDefault().getActiveShell();
                IClasspathEntry cpe = BuildPathDialogAccess
                    .configureSourceAttachment(shell, entry);
                if (cpe == null) {
                    return;
                }
                String[] changedAttributes = {CPListElement.SOURCEATTACHMENT};
                BuildPathSupport.modifyClasspathEntry(
                    shell, cpe, changedAttributes, javaProject, containerPath,
                    cpe.getReferencingEntry() != null,
                    new NullProgressMonitor());
            } catch (CoreException e) {
                BytecodeOutlinePlugin.error(
                    "Unable to configure source attachment", e);
            }

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        if (resource == null) {
            return dir;
        }
        // resolve multiple output locations here
        if (project.exists() && project.getProject().isOpen()) {
            IClasspathEntry entries[] = project.getRawClasspath();
            for (int i = 0; i < entries.length; i++) {
                IClasspathEntry classpathEntry = entries[i];
                if (classpathEntry.getEntryKind() == IClasspathEntry.CPE_SOURCE) {
                    IPath outputPath = classpathEntry.getOutputLocation();
                    if (outputPath != null
                        && classpathEntry.getPath().isPrefixOf(
                            resource.getFullPath())) {
                        path = outputPath;
                        break;
                    }
                }

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        boolean isRoot = false;
        if (project == null || pack == null || !(pack instanceof IContainer)) {
            return isRoot;
        }
        IPackageFragmentRoot root = project.getPackageFragmentRoot(pack);
        IClasspathEntry clPathEntry = null;
        if (root != null) {
            clPathEntry = root.getRawClasspathEntry();
        }
        isRoot = clPathEntry != null;
        return isRoot;

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            // BytecodeOutlinePlugin.log(e, IStatus.ERROR);
        }
        if (paths != null) {
            IPath projectPath = javaProject.getProject().getLocation();
            for (int i = 0; i < paths.length; ++i) {
                IClasspathEntry cpEntry = paths[i];
                IPath p = null;
                if (cpEntry.getEntryKind() == IClasspathEntry.CPE_SOURCE) {
                    // filter out source container - there are unused for class
                    // search - add bytecode output location instead
                    p = cpEntry.getOutputLocation();
                    if (p == null) {
                        // default output used:
                        p = defaultOutputLocation;
                    }
                } else if (cpEntry.getEntryKind() == IClasspathEntry.CPE_PROJECT) {
                    String projName = cpEntry.getPath().toPortableString()
                        .substring(1);
                    IProject proj = workspaceRoot.getProject(projName);
                    IJavaProject projj = JavaCore.create(proj);
                    getClassURLs(projj, urls);
                    continue;
                } else {
                    p = cpEntry.getPath();
                }


                if (p == null) {
                    continue;
                }

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        // replace JCL_LIB with JCL15_LIB, and JCL_SRC with JCL15_SRC
        IClasspathEntry[] classpath = javaProject.getRawClasspath();
        IPath jclLib = new Path(jclLibString);
        for (int i = 0, length = classpath.length; i < length; i++) {
            IClasspathEntry entry = classpath[i];
            if (entry.getPath().equals(jclLib)) {
                classpath[i] = JavaCore.newVariableEntry(
                    new Path(newJclLibString), null, entry
                        .getSourceAttachmentRootPath(), entry.getAccessRules(),
                    new IClasspathAttribute[0], entry.isExported());
                break;
            }
        }
        javaProject.setRawClasspath(classpath, null);
    }

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        try {
            IClasspathEntry[] paths = project.getResolvedClasspath(true);
            if (paths != null) {
                
                for ( int i = 0; i < paths.length; i++ ) {
                    IClasspathEntry path = paths[i];
                    if (path.getEntryKind() == IClasspathEntry.CPE_LIBRARY) {
                        URL url = getRawLocationURL(path.getPath());
                        pathElements.add(url);
                    }
                }
            }
            IPath location = getProjectLocation(project.getProject());

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        List<IClasspathEntry> result = new ArrayList<IClasspathEntry>(entries.length + 2);
        result.addAll(Arrays.asList(entries));


        // Add the Bnd classpath container entry
        IPath bndContainerPath = BndtoolsConstants.BND_CLASSPATH_ID;
        IClasspathEntry bndContainerEntry = JavaCore.newContainerEntry(bndContainerPath, false);
        result.add(bndContainerEntry);


        return result.toArray(new IClasspathEntry[result.size()]);
    }

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                calculateWorkspaceBundleAccessRules(projectAccessRules, c);
            }
        }


        for (Container c : containers) {
            IClasspathEntry cpe;


            if (c.getError() == null) {
                File file = c.getFile();
                assert file.isAbsolute();

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        IClasspathEntry[] entries = project.getRawClasspath();
        List<IClasspathEntry> queue = new ArrayList<IClasspathEntry>(entries.length);
        queue.addAll(Arrays.asList(entries));


        while (!queue.isEmpty()) {
            IClasspathEntry entry = queue.remove(0);


            if (exports && !entry.isExported())
                continue;


            IPath path = entry.getPath();


            switch (entry.getEntryKind()) {
            case IClasspathEntry.CPE_LIBRARY :
                files.add(getFileForPath(path));
                break;
            case IClasspathEntry.CPE_VARIABLE :
                IPath resolvedPath = JavaCore.getResolvedVariablePath(path);
                files.add(getFileForPath(resolvedPath));
                break;
            case IClasspathEntry.CPE_SOURCE :
                IPath outputLocation = entry.getOutputLocation();
                if (exports && outputLocation != null)
                    files.add(getFileForPath(outputLocation));
                break;
            case IClasspathEntry.CPE_CONTAINER :
                IClasspathContainer container = JavaCore.getClasspathContainer(path, project);
                boolean allow = true;
                for (Predicate<IClasspathContainer> filter : containerFilters)
                    if (!filter.select(container))
                        allow = false;
                if (allow)
                    queue.addAll(Arrays.asList(container.getClasspathEntries()));
                break;
            case IClasspathEntry.CPE_PROJECT :
                IProject targetProject = ResourcesPlugin.getWorkspace().getRoot().getProject(path.lastSegment());
                IJavaProject targetJavaProject = JavaCore.create(targetProject);
                accumulateClasspath(files, targetJavaProject, true, containerFilters);
                break;
            default :
                logger.logError("Unhandled IPath entryKind of " + entry.getEntryKind(), null);
                break;
            }
        }
    }

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