Example usage for org.eclipse.jdt.core ITypeRoot exists

Introduction

In this page you can find the example usage for org.eclipse.jdt.core ITypeRoot exists.

Prototype

boolean exists();

Source Link

Document

Returns whether this Java element exists in the model.

Usage

From source file:at.bestsolution.fxide.jdt.text.javadoc.JavadocContentAccess2.java

License:Open Source License

/**
 * Returns the Javadoc for a package which could be present in package.html, package-info.java
 * or from an attached Javadoc.// www  . j  a v  a  2 s  .  c  om
 *
 * @param packageFragment the package which is requesting for the document
 * @return the document content in HTML format or <code>null</code> if there is no associated
 *         Javadoc
 * @throws CoreException if the Java element does not exists or an exception occurs while
 *             accessing the file containing the package Javadoc
 * @since 3.9
 */
public static String getHTMLContent(IPackageFragment packageFragment) throws CoreException {
    IPackageFragmentRoot root = (IPackageFragmentRoot) packageFragment
            .getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);

    //1==> Handle the case when the documentation is present in package-info.java or package-info.class file
    ITypeRoot packageInfo;
    boolean isBinary = root.getKind() == IPackageFragmentRoot.K_BINARY;
    if (isBinary) {
        packageInfo = packageFragment.getClassFile(JavaModelUtil.PACKAGE_INFO_CLASS);
    } else {
        packageInfo = packageFragment.getCompilationUnit(JavaModelUtil.PACKAGE_INFO_JAVA);
    }
    if (packageInfo != null && packageInfo.exists()) {
        String cuSource = packageInfo.getSource();
        //the source can be null for some of the class files
        if (cuSource != null) {
            Javadoc packageJavadocNode = getPackageJavadocNode(packageFragment, cuSource);
            if (packageJavadocNode != null) {
                IJavaElement element;
                if (isBinary) {
                    element = ((IClassFile) packageInfo).getType();
                } else {
                    element = packageInfo.getParent(); // parent is the IPackageFragment
                }
                return new JavadocContentAccess2(element, packageJavadocNode, cuSource).toHTML();
            }
        }
    }

    // 2==> Handle the case when the documentation is done in package.html file. The file can be either in normal source folder or coming from a jar file
    else {
        Object[] nonJavaResources = packageFragment.getNonJavaResources();
        // 2.1 ==>If the package.html file is present in the source or directly in the binary jar
        for (Object nonJavaResource : nonJavaResources) {
            if (nonJavaResource instanceof IFile) {
                IFile iFile = (IFile) nonJavaResource;
                if (iFile.exists() && JavaModelUtil.PACKAGE_HTML.equals(iFile.getName())) {
                    return getIFileContent(iFile);
                }
            }
        }

        // 2.2==>The file is present in a binary container
        if (isBinary) {
            for (Object nonJavaResource : nonJavaResources) {
                // The content is from an external binary class folder
                if (nonJavaResource instanceof IJarEntryResource) {
                    IJarEntryResource jarEntryResource = (IJarEntryResource) nonJavaResource;
                    String encoding = getSourceAttachmentEncoding(root);
                    if (JavaModelUtil.PACKAGE_HTML.equals(jarEntryResource.getName())
                            && jarEntryResource.isFile()) {
                        return getHTMLContent(jarEntryResource, encoding);
                    }
                }
            }
            //2.3 ==>The file is present in the source attachment path.
            String contents = getHTMLContentFromAttachedSource(root, packageFragment);
            if (contents != null)
                return contents;
        }
    }

    //3==> Handle the case when the documentation is coming from the attached Javadoc
    if ((root.isArchive() || root.isExternal())) {
        return packageFragment.getAttachedJavadoc(null);

    }

    return null;
}

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From source file:org.eclipse.ajdt.core.builder.AJCompilationParticipantResult.java

License:Open Source License

@Override
public boolean hasAnnotations() {
    if (hasAnnotationsCache == null) {
        try {/*from  ww  w.j  a v  a 2 s.  c  om*/
            if (file != null) {
                ITypeRoot root = (ITypeRoot) JavaCore.create(file);
                if (root.exists()) {
                    hasAnnotationsCache = hasAnnotations(root);
                } else {
                    hasAnnotationsCache = false;
                }
            }
        } catch (JavaModelException e) {
            hasAnnotationsCache = false;
        }

    }

    return hasAnnotationsCache;
}

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From source file:org.eclipse.che.jdt.javadoc.ASTProvider.java

License:Open Source License

/**
 * Checks whether the given Java element has accessible source.
 *
 * @param je the Java element to test/* w  w w  .j  a v a  2  s. c  o  m*/
 * @return <code>true</code> if the element has source
 * @since 3.2
 */
private static boolean hasSource(ITypeRoot je) {
    if (je == null || !je.exists())
        return false;

    try {
        return je.getBuffer() != null;
    } catch (JavaModelException ex) {
        LOG.error(ex.getMessage(), ex);
    }
    return false;
}

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From source file:org.eclipse.che.jdt.javadoc.JavadocContentAccess2.java

License:Open Source License

/**
 * Returns the Javadoc for a package which could be present in package.html, package-info.java
 * or from an attached Javadoc./* ww w. ja  v a2s .  c  o  m*/
 *
 * @param packageFragment the package which is requesting for the document
 * @param urlPrefix
 * @return the document content in HTML format or <code>null</code> if there is no associated
 *         Javadoc
 * @throws CoreException if the Java element does not exists or an exception occurs while
 *             accessing the file containing the package Javadoc
 * @since 3.9
 */
public static String getHTMLContent(IPackageFragment packageFragment, String urlPrefix) throws CoreException {
    IPackageFragmentRoot root = (IPackageFragmentRoot) packageFragment
            .getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);

    //1==> Handle the case when the documentation is present in package-info.java or package-info.class file
    ITypeRoot packageInfo;
    boolean isBinary = root.getKind() == IPackageFragmentRoot.K_BINARY;
    if (isBinary) {
        packageInfo = packageFragment.getClassFile(JavaModelUtil.PACKAGE_INFO_CLASS);
    } else {
        packageInfo = packageFragment.getCompilationUnit(JavaModelUtil.PACKAGE_INFO_JAVA);
    }
    if (packageInfo != null && packageInfo.exists()) {
        String cuSource = packageInfo.getSource();
        //the source can be null for some of the class files
        if (cuSource != null) {
            Javadoc packageJavadocNode = getPackageJavadocNode(packageFragment, cuSource);
            if (packageJavadocNode != null) {
                IJavaElement element;
                if (isBinary) {
                    element = ((IClassFile) packageInfo).getType();
                } else {
                    element = packageInfo.getParent(); // parent is the IPackageFragment
                }
                return new JavadocContentAccess2(element, packageJavadocNode, cuSource, urlPrefix).toHTML();
            }
        }
    }

    // 2==> Handle the case when the documentation is done in package.html file. The file can be either in normal source folder or
    // coming from a jar file
    else {
        Object[] nonJavaResources = packageFragment.getNonJavaResources();
        // 2.1 ==>If the package.html file is present in the source or directly in the binary jar
        for (Object nonJavaResource : nonJavaResources) {
            if (nonJavaResource instanceof IFile) {
                IFile iFile = (IFile) nonJavaResource;
                if (iFile.exists() && JavaModelUtil.PACKAGE_HTML.equals(iFile.getName())) {
                    return getIFileContent(iFile);
                }
            }
        }

        // 2.2==>The file is present in a binary container
        if (isBinary) {
            for (Object nonJavaResource : nonJavaResources) {
                // The content is from an external binary class folder
                if (nonJavaResource instanceof IJarEntryResource) {
                    IJarEntryResource jarEntryResource = (IJarEntryResource) nonJavaResource;
                    String encoding = getSourceAttachmentEncoding(root);
                    if (JavaModelUtil.PACKAGE_HTML.equals(jarEntryResource.getName())
                            && jarEntryResource.isFile()) {
                        return getHTMLContent(jarEntryResource, encoding);
                    }
                }
            }
            //2.3 ==>The file is present in the source attachment path.
            String contents = getHTMLContentFromAttachedSource(root, packageFragment, urlPrefix);
            if (contents != null)
                return contents;
        }
    }

    //3==> Handle the case when the documentation is coming from the attached Javadoc
    if ((root.isArchive() || root.isExternal())) {
        return packageFragment.getAttachedJavadoc(null);

    }

    return null;
}

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From source file:org.eclipse.recommenders.internal.rcp.JavaElementSelections.java

License:Open Source License

/**
 * Returns the {@link IJavaElement} at the given offset in the editor.
 *
 *//*w w w  . j a  v a  2s .  c  om*/
public static Optional<IJavaElement> resolveJavaElementFromEditor(final JavaEditor editor, final int offset) {
    ensureIsNotNull(editor);
    ITypeRoot root = findTypeRoot(editor).orNull();
    if (root != null && root.exists()) {
        return resolveJavaElementFromTypeRootInEditor(root, offset);
    }
    return absent();
}

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From source file:org.eclipse.recommenders.internal.rcp.JavaElementSelections.java

License:Open Source License

private static boolean isInvalidSelection(ITypeRoot root, final int offset) {
    try {/*w ww . j a  v  a2 s. co  m*/
        if (!root.exists()) {
            return true;
        }
        // check whether the type root is part of an package fragment root. If not, it's an invalid selection and
        // all resolutions are likely to fail. Thus, return true (=invalid):
        IJavaElement ancestor = root.getAncestor(IJavaProject.PACKAGE_FRAGMENT_ROOT);
        if (!ancestor.exists()) {
            return true;
        }
        ISourceRange range = root.getSourceRange();
        return range == null || offset < 0 || offset > range.getLength();
    } catch (Exception e) {
        log(ERROR_EXCEPTION_WHILE_CHECKING_OFFSETS, e);
        return false;
    }
}

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