org.eclipse.osgi.internal.hooks.DevClassLoadingHook Maven / Gradle / Ivy
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Show all versions of aspectjtools Show documentation
AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during
compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based
@AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step.
This library is a superset of AspectJ weaver and hence also of AspectJ runtime.
/*******************************************************************************
* Copyright (c) 2006, 2017 IBM Corporation and others.
*
* 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/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.internal.hooks;
import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import org.eclipse.osgi.container.ModuleCapability;
import org.eclipse.osgi.container.namespaces.EquinoxModuleDataNamespace;
import org.eclipse.osgi.framework.util.KeyedElement;
import org.eclipse.osgi.internal.framework.EquinoxConfiguration;
import org.eclipse.osgi.internal.hookregistry.ClassLoaderHook;
import org.eclipse.osgi.internal.loader.classpath.ClasspathEntry;
import org.eclipse.osgi.internal.loader.classpath.ClasspathManager;
import org.eclipse.osgi.internal.loader.classpath.FragmentClasspath;
import org.eclipse.osgi.storage.BundleInfo.Generation;
import org.eclipse.osgi.storage.ContentProvider.Type;
import org.eclipse.osgi.storage.bundlefile.BundleFile;
public class DevClassLoadingHook extends ClassLoaderHook implements KeyedElement {
public static final String KEY = DevClassLoadingHook.class.getName();
public static final int HASHCODE = KEY.hashCode();
private static final String FRAGMENT = "@fragment@"; //$NON-NLS-1$
private final EquinoxConfiguration configuration;
public DevClassLoadingHook(EquinoxConfiguration configuration) {
this.configuration = configuration;
}
@Override
public boolean addClassPathEntry(ArrayList cpEntries, String cp, ClasspathManager hostmanager, Generation sourceGeneration) {
// if this is a connect bundle just ignore
if (sourceGeneration.getContentType() == Type.CONNECT) {
return false;
}
// first check that we are in devmode for this sourcedata
String[] devClassPaths = !configuration.inDevelopmentMode() ? null : configuration.getDevClassPath(sourceGeneration.getRevision());
if (devClassPaths == null || devClassPaths.length == 0)
return false; // not in dev mode return
// check that dev classpath entries have not already been added; we mark this in the first entry below
if (!cpEntries.isEmpty() && cpEntries.get(0).getUserObject(KEY) != null)
return false; // this source has already had its dev classpath entries added.
// get the specified classpath from the Bundle-ClassPath header to check for dups
List moduleDatas = sourceGeneration.getRevision().getModuleCapabilities(EquinoxModuleDataNamespace.MODULE_DATA_NAMESPACE);
@SuppressWarnings("unchecked")
List specifiedCP = Optional.ofNullable(moduleDatas.isEmpty()
?
null
: (List) moduleDatas.get(0).getAttributes().get(EquinoxModuleDataNamespace.CAPABILITY_CLASSPATH))
.orElse(Collections.singletonList(".")); //$NON-NLS-1$
boolean result = false;
for (String devClassPath : devClassPaths) {
if (specifiedCP.contains(devClassPath)) {
// dev properties contained a duplicate of an entry on the Bundle-ClassPath header
// don't add anything, the framework will do it for us
continue;
}
if (hostmanager.addClassPathEntry(cpEntries, devClassPath, hostmanager, sourceGeneration)) {
result = true;
} else {
String devCP = devClassPath;
boolean fromFragment = devCP.endsWith(FRAGMENT);
if (!fromFragment && devCP.indexOf("..") >= 0) { //$NON-NLS-1$
// if in dev mode, try using cp as a relative path from the base bundle file
File base = sourceGeneration.getBundleFile().getBaseFile();
if (base != null && base.isDirectory()) {
// this is only supported for directory bundles
ClasspathEntry entry = hostmanager.getExternalClassPath(new File(base, devCP).getAbsolutePath(), sourceGeneration);
if (entry != null) {
cpEntries.add(entry);
result = true;
}
}
} else {
// if in dev mode, try using the cp as an absolute path
// we assume absolute entries come from fragments. Find the source
if (fromFragment)
devCP = devCP.substring(0, devCP.length() - FRAGMENT.length());
Generation fragSource = findFragmentSource(sourceGeneration, devCP, hostmanager, fromFragment);
if (fragSource != null) {
ClasspathEntry entry = hostmanager.getExternalClassPath(devCP, fragSource);
if (entry != null) {
cpEntries.add(entry);
result = true;
}
}
}
}
}
// mark the first entry of the list.
// This way we can quickly tell that dev classpath entries have been added to the list
if (result && !cpEntries.isEmpty())
cpEntries.get(0).addUserObject(this);
return result;
}
private Generation findFragmentSource(Generation hostGeneration, String cp, ClasspathManager manager, boolean fromFragment) {
if (hostGeneration != manager.getGeneration())
return hostGeneration;
File file = new File(cp);
if (!file.isAbsolute())
return hostGeneration;
FragmentClasspath[] fragCPs = manager.getFragmentClasspaths();
for (FragmentClasspath fragCP : fragCPs) {
BundleFile fragBase = fragCP.getGeneration().getBundleFile();
File fragFile = fragBase.getBaseFile();
if (fragFile != null && file.getPath().startsWith(fragFile.getPath())) {
return fragCP.getGeneration();
}
}
return fromFragment ? null : hostGeneration;
}
@Override
public boolean compare(KeyedElement other) {
return other.getKey() == KEY;
}
@Override
public Object getKey() {
return KEY;
}
@Override
public int getKeyHashCode() {
return HASHCODE;
}
@Override
public boolean isProcessClassRecursionSupported() {
return true;
}
}