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BndContainer.java
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BndContainer.java
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package org.bndtools.builder.classpath;
import static java.util.Objects.requireNonNull;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.bndtools.api.BndtoolsConstants;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IClasspathAttribute;
import org.eclipse.jdt.core.IClasspathContainer;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.launching.IRuntimeClasspathEntry;
import org.eclipse.jdt.launching.JavaRuntime;
import aQute.bnd.osgi.Constants;
public class BndContainer implements IClasspathContainer, Serializable {
private static final long serialVersionUID = 2L;
public static final String DESCRIPTION = "Bnd Bundle Path";
private static final IClasspathEntry[] EMPTY_ENTRIES = new IClasspathEntry[0];
static final IRuntimeClasspathEntry[] EMPTY_RUNTIMEENTRIES = new IRuntimeClasspathEntry[0];
private final IClasspathEntry[] entries;
private final long lastModified;
private transient volatile List<IResource> resources;
private BndContainer(IClasspathEntry[] entries, long lastModified, List<IResource> resources) {
this.entries = entries;
this.lastModified = lastModified;
this.resources = resources;
}
@Override
public IClasspathEntry[] getClasspathEntries() {
return entries;
}
@Override
public String getDescription() {
return DESCRIPTION;
}
@Override
public int getKind() {
return IClasspathContainer.K_APPLICATION;
}
@Override
public IPath getPath() {
return BndtoolsConstants.BND_CLASSPATH_ID;
}
@Override
public String toString() {
return getDescription();
}
public long lastModified() {
return lastModified;
}
void refresh() throws CoreException {
List<IResource> files = resources;
if (files == null) {
return;
}
if (ResourcesPlugin.getWorkspace()
.isTreeLocked()) {
return;
}
for (IResource target : files) {
int depth = target.getType() == IResource.FILE ? IResource.DEPTH_ZERO : IResource.DEPTH_INFINITE;
if (!target.isSynchronized(depth)) {
target.refreshLocal(depth, null);
}
}
resources = null;
}
static final IClasspathAttribute TEST = JavaCore.newClasspathAttribute("test",
Boolean.TRUE.toString());
private static final IClasspathAttribute PROJECT = JavaCore.newClasspathAttribute(Constants.VERSION_ATTRIBUTE,
Constants.VERSION_ATTR_PROJECT);
IRuntimeClasspathEntry[] getRuntimeClasspathEntries() throws JavaModelException {
List<IRuntimeClasspathEntry> runtime = new ArrayList<>();
for (IClasspathEntry cpe : entries) {
switch (cpe.getEntryKind()) {
case IClasspathEntry.CPE_LIBRARY : {
runtime
.add(JavaRuntime.newArchiveRuntimeClasspathEntry(cpe.getPath(), cpe.getSourceAttachmentPath(),
cpe.getSourceAttachmentRootPath(), cpe.getAccessRules(), cpe.getExtraAttributes(), false));
break;
}
case IClasspathEntry.CPE_PROJECT : {
if (!hasAttribute(cpe, PROJECT)) {
/*
* This project entry is not version=project, so the
* library entry for the project will result in a
* runtime entry being added.
*/
break;
}
/*
* This project entry is version=project, so we must add a
* runtime entry for each of the project's output folders.
*/
IProject project = ResourcesPlugin.getWorkspace()
.getRoot()
.getProject(cpe.getPath()
.segment(0));
if (project.isOpen()) {
IJavaProject javaProject = JavaCore.create(project);
Set<IPath> seen = new HashSet<>();
for (IClasspathEntry raw : javaProject.getRawClasspath()) {
if ((raw.getEntryKind() == IClasspathEntry.CPE_SOURCE) && !hasAttribute(raw, TEST)) {
IPath output = raw.getOutputLocation();
if (output == null) {
// use default output location
output = javaProject.getOutputLocation();
}
if (seen.add(output)) {
runtime.add(JavaRuntime.newArchiveRuntimeClasspathEntry(output, cpe.getPath(), null,
cpe.getAccessRules(), cpe.getExtraAttributes(), false));
}
}
}
}
break;
}
default :
break;
}
}
return runtime.toArray(EMPTY_RUNTIMEENTRIES);
}
static boolean hasAttribute(IClasspathEntry cpe, IClasspathAttribute attr) {
return Arrays.stream(cpe.getExtraAttributes())
.anyMatch(attr::equals);
}
static class Builder {
private final List<IClasspathEntry> entries = new ArrayList<>();
private final List<IResource> resources = new ArrayList<>();
private long lastModified = 0L;
Builder() {}
Builder updateLastModified(long time) {
if (time > lastModified) {
lastModified = time;
}
return this;
}
long lastModified() {
return lastModified;
}
List<IClasspathEntry> entries() {
return entries;
}
Builder entries(List<IClasspathEntry> entries) {
requireNonNull(entries);
if (entries != this.entries) {
this.entries.clear();
this.entries.addAll(entries);
}
return this;
}
Builder entry(IClasspathEntry entry) {
entries.add(requireNonNull(entry));
return this;
}
Builder entry(int i, IClasspathEntry entry) {
entries.set(i, requireNonNull(entry));
return this;
}
Builder refresh(IResource resource) {
resources.add(requireNonNull(resource));
return this;
}
BndContainer build() {
return new BndContainer(entries.toArray(EMPTY_ENTRIES), lastModified,
resources.isEmpty() ? null : new ArrayList<>(resources));
}
}
}