| /******************************************************************************* |
| * Copyright (c) 2010, 2016 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.e4.core.internal.di; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Type; |
| import org.eclipse.e4.core.di.IInjector; |
| import org.eclipse.e4.core.di.InjectionException; |
| import org.eclipse.e4.core.di.suppliers.IObjectDescriptor; |
| import org.eclipse.e4.core.di.suppliers.PrimaryObjectSupplier; |
| |
| public class ConstructorRequestor extends Requestor<Constructor<?>> { |
| |
| public ConstructorRequestor(Constructor<?> constructor, IInjector injector, PrimaryObjectSupplier primarySupplier, PrimaryObjectSupplier tempSupplier) { |
| super(constructor, injector, primarySupplier, tempSupplier, null, false /* do not track */); |
| } |
| |
| @Override |
| public Object execute() throws InjectionException { |
| Object result = null; |
| if (!location.isAccessible()) { |
| location.setAccessible(true); |
| } |
| boolean pausedRecording = false; |
| if ((primarySupplier != null)) { |
| primarySupplier.pauseRecording(); |
| pausedRecording = true; |
| } |
| try { |
| result = location.newInstance(actualArgs); |
| } catch (IllegalArgumentException | IllegalAccessException e) { |
| throw new InjectionException(e); |
| } catch (InstantiationException e) { |
| throw new InjectionException("Unable to instantiate " + location, e); //$NON-NLS-1$ |
| } catch (InvocationTargetException e) { |
| Throwable originalException = e.getCause(); |
| // Errors such as ThreadDeath or OutOfMemoryError should not be trapped |
| // http://bugs.eclipse.org/bugs/show_bug.cgi?id=457687 |
| if (originalException instanceof Error) { |
| throw (Error) originalException; |
| } |
| throw new InjectionException((originalException != null) ? originalException : e); |
| } finally { |
| if (pausedRecording) |
| primarySupplier.resumeRecording(); |
| clearResolvedArgs(); |
| } |
| return result; |
| } |
| |
| @Override |
| public IObjectDescriptor[] calcDependentObjects() { |
| Annotation[][] annotations = location.getParameterAnnotations(); |
| Type[] logicalParams = location.getGenericParameterTypes(); |
| // JDK bug: different methods see / don't see generated args for nested classes |
| // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5087240 |
| Class<?>[] compilerParams = location.getParameterTypes(); |
| if (compilerParams.length > logicalParams.length) { |
| Type[] tmp = new Type[compilerParams.length]; |
| System.arraycopy(compilerParams, 0, tmp, 0, compilerParams.length - logicalParams.length); |
| System.arraycopy(logicalParams, 0, tmp, compilerParams.length - logicalParams.length, logicalParams.length); |
| logicalParams = tmp; |
| } |
| if (logicalParams.length == 0) { |
| return EMPTY_DESCRIPTORS; |
| } |
| IObjectDescriptor[] descriptors = new IObjectDescriptor[logicalParams.length]; |
| for (int i = 0; i < logicalParams.length; i++) { |
| descriptors[i] = new ObjectDescriptor(logicalParams[i], annotations[i]); |
| } |
| return descriptors; |
| } |
| |
| @Override |
| public Class<?> getRequestingObjectClass() { |
| return location.getDeclaringClass(); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuffer tmp = new StringBuffer(); |
| Object object = getRequestingObject(); |
| if (object != null) |
| tmp.append(object.getClass().getSimpleName()); |
| else |
| tmp.append(location.getDeclaringClass().getSimpleName()); |
| tmp.append('('); |
| tmp.append(')'); |
| return tmp.toString(); |
| } |
| } |