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JavaDiscoverer.java
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JavaDiscoverer.java
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package org.palladiosimulator.retriever.extraction.discoverers;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.common.CommonPlugin;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.dom.AST;
import org.eclipse.jdt.core.dom.ASTParser;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.FileASTRequestor;
import org.palladiosimulator.retriever.services.Discoverer;
import org.palladiosimulator.retriever.services.RetrieverConfiguration;
import org.palladiosimulator.retriever.services.blackboard.RetrieverBlackboard;
import de.uka.ipd.sdq.workflow.jobs.AbstractBlackboardInteractingJob;
import de.uka.ipd.sdq.workflow.jobs.CleanupFailedException;
import de.uka.ipd.sdq.workflow.jobs.IBlackboardInteractingJob;
import de.uka.ipd.sdq.workflow.jobs.JobFailedException;
import de.uka.ipd.sdq.workflow.jobs.UserCanceledException;
public class JavaDiscoverer implements Discoverer {
public static final String DISCOVERER_ID = "org.palladiosimulator.retriever.extraction.discoverers.java";
@Override
public IBlackboardInteractingJob<RetrieverBlackboard> create(final RetrieverConfiguration configuration,
final RetrieverBlackboard blackboard) {
return new AbstractBlackboardInteractingJob<>() {
@Override
public void cleanup(final IProgressMonitor monitor) throws CleanupFailedException {
}
@Override
public void execute(final IProgressMonitor monitor) throws JobFailedException, UserCanceledException {
final Path root = Paths.get(CommonPlugin.asLocalURI(configuration.getInputFolder())
.devicePath());
this.setBlackboard(Objects.requireNonNull(blackboard));
final Map<Path, CompilationUnit> compilationUnits = new HashMap<>();
final ASTParser parser = ASTParser.newParser(AST.getJLSLatest());
parser.setKind(ASTParser.K_COMPILATION_UNIT);
parser.setResolveBindings(true);
parser.setBindingsRecovery(true);
parser.setStatementsRecovery(true);
final String latestJavaVersion = JavaCore.latestSupportedJavaVersion();
parser.setCompilerOptions(
Map.of(JavaCore.COMPILER_SOURCE, latestJavaVersion, JavaCore.COMPILER_COMPLIANCE,
latestJavaVersion, JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, latestJavaVersion));
final String[] classpathEntries = Discoverer.find(root, ".jar", this.logger)
.map(Path::toString)
.toArray(String[]::new);
final String[] sourceFilePaths = Discoverer.find(root, ".java", this.logger)
.map(Path::toString)
.toArray(String[]::new);
try {
parser.setEnvironment(classpathEntries, new String[0], new String[0], true);
parser.createASTs(sourceFilePaths, new String[sourceFilePaths.length], new String[0],
new FileASTRequestor() {
@Override
public void acceptAST(final String sourceFilePath, final CompilationUnit ast) {
compilationUnits.put(Path.of(sourceFilePath), ast);
}
}, monitor);
} catch (IllegalArgumentException | IllegalStateException e) {
this.logger.error(String.format("No Java files in %s could be transposed.", root), e);
}
this.getBlackboard()
.putDiscoveredFiles(DISCOVERER_ID, compilationUnits);
}
@Override
public String getName() {
return "Java Discoverer Job";
}
};
}
@Override
public Set<String> getConfigurationKeys() {
return Collections.emptySet();
}
@Override
public String getID() {
return DISCOVERER_ID;
}
@Override
public String getName() {
return "Java Discoverer";
}
}