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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.

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/*******************************************************************************
 * Copyright (c) 2000, 2022 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
 *     James Blackburn (Broadcom Corp.) - ongoing development
 *     Christoph Läubrich - Issue #77 - SaveManager access the ResourcesPlugin.getWorkspace at init phase
 *******************************************************************************/
package org.eclipse.core.internal.resources;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;
import java.util.Set;
import org.eclipse.core.internal.utils.Messages;
import org.eclipse.core.resources.IResourceStatus;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;

/**
 * Represents a table of keys and paths used by a plugin to maintain its
 * configuration files' names.
 */
public class SafeFileTable {
	protected IPath location;
	protected Properties table;
	private Workspace workspace;

	public SafeFileTable(String pluginId, Workspace workspace) throws CoreException {
		this.workspace = workspace;
		location = getWorkspace().getMetaArea().getSafeTableLocationFor(pluginId);
		restore();
	}

	public IPath[] getFiles() {
		Set set = table.keySet();
		String[] keys = set.toArray(new String[set.size()]);
		IPath[] files = new IPath[keys.length];
		for (int i = 0; i < keys.length; i++)
			files[i] = IPath.fromOSString(keys[i]);
		return files;
	}

	protected Workspace getWorkspace() {
		return workspace;
	}

	public IPath lookup(IPath file) {
		String result = table.getProperty(file.toOSString());
		return result == null ? null : IPath.fromOSString(result);
	}

	public void map(IPath file, IPath aLocation) {
		if (aLocation == null)
			table.remove(file);
		else
			table.setProperty(file.toOSString(), aLocation.toOSString());
	}

	public void restore() throws CoreException {
		java.io.File target = location.toFile();
		table = new Properties();
		if (!target.exists())
			return;
		try (FileInputStream input = new FileInputStream(target)) {
			table.load(input);
		} catch (IOException e) {
			String message = Messages.resources_exSafeRead;
			throw new ResourceException(IResourceStatus.INTERNAL_ERROR, null, message, e);
		}
	}

	public void save() throws CoreException {
		java.io.File target = location.toFile();
		try (FileOutputStream output = new FileOutputStream(target)) {
			table.store(output, "safe table"); //$NON-NLS-1$
		} catch (IOException e) {
			String message = Messages.resources_exSafeSave;
			throw new ResourceException(IResourceStatus.INTERNAL_ERROR, null, message, e);
		}
	}

	public void setLocation(IPath location) {
		if (location != null)
			this.location = location;
	}
}
 















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