| /******************************************************************************* |
| * Copyright (c) 2010, 2013 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License 2.0, which accompanies this distribution |
| * and is available at https://www.eclipse.org/legal/epl-2.0/. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.common.core.internal.utility; |
| |
| import java.io.FileNotFoundException; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IParent; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jpt.common.core.internal.plugin.JptCommonCorePlugin; |
| import org.eclipse.jpt.common.utility.internal.predicate.PredicateAdapter; |
| import org.eclipse.jpt.common.utility.predicate.Predicate; |
| |
| /** |
| * {@link IJavaElement} convenience methods. |
| */ |
| public class JavaElementTools { |
| |
| // ********** children ********** |
| |
| /** |
| * Wrap checked exception and check for out of sync workspace. |
| */ |
| public static IJavaElement[] getChildren(IParent parent) { |
| try { |
| return parent.getChildren(); |
| } catch (JavaModelException ex) { |
| // ignore FNFE - which can happen when the workspace is out of sync with O/S file system |
| if ( ! (ex.getCause() instanceof FileNotFoundException)) { |
| JptCommonCorePlugin.instance().logError(ex); |
| } |
| return EMPTY_JAVA_ELEMENT_ARRAY; |
| } |
| } |
| private static final IJavaElement[] EMPTY_JAVA_ELEMENT_ARRAY = new IJavaElement[0]; |
| |
| |
| // ********** exists ********** |
| |
| public static final Predicate<IJavaElement> EXISTS = new Exists(); |
| |
| public static class Exists |
| extends PredicateAdapter<IJavaElement> |
| { |
| @Override |
| public boolean evaluate(IJavaElement javaElement) { |
| return javaElement.exists(); |
| } |
| } |
| |
| |
| // ********** disabled constructor ********** |
| |
| private JavaElementTools() { |
| throw new UnsupportedOperationException(); |
| } |
| } |