Copyright (c) 2000, 2015 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
/*******************************************************************************
 * Copyright (c) 2000, 2015 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.core.internal.resources;

import org.eclipse.core.internal.watson.IPathRequestor;
import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.QualifiedName;

Implements a resource proxy given a path requestor and the resource
info of the resource currently being visited.
/**
 * Implements a resource proxy given a path requestor and the resource
 * info of the resource currently being visited.
 */
public class ResourceProxy implements IResourceProxy, ICoreConstants {
	protected final Workspace workspace = (Workspace) ResourcesPlugin.getWorkspace();
	protected IPathRequestor requestor;
	protected ResourceInfo info;

	//cached info
	protected IPath fullPath;
	protected IResource resource;

	
See Also:
getModificationStamp.getModificationStamp()/**
	 * @see org.eclipse.core.resources.IResourceProxy#getModificationStamp()
	 */
	@Override
	public long getModificationStamp() {
		return info.getModificationStamp();
	}

	@Override
	public String getName() {
		return requestor.requestName();
	}

	@Override
	public Object getSessionProperty(QualifiedName key) {
		return info.getSessionProperty(key);
	}

	@Override
	public int getType() {
		return info.getType();
	}

	
See Also:
isAccessible.isAccessible()/**
	 * @see org.eclipse.core.resources.IResourceProxy#isAccessible()
	 */
	@Override
	public boolean isAccessible() {
		int flags = info.getFlags();
		if (info.getType() == IResource.PROJECT)
			return flags != NULL_FLAG && ResourceInfo.isSet(flags, M_OPEN);
		return flags != NULL_FLAG;
	}

	
See Also:
isDerived.isDerived()/**
	 * @see org.eclipse.core.resources.IResourceProxy#isDerived()
	 */
	@Override
	public boolean isDerived() {
		int flags = info.getFlags();
		return flags != NULL_FLAG && ResourceInfo.isSet(flags, M_DERIVED);
	}

	
See Also:
isLinked.isLinked()/**
	 * @see org.eclipse.core.resources.IResourceProxy#isLinked()
	 */
	@Override
	public boolean isLinked() {
		int flags = info.getFlags();
		return flags != NULL_FLAG && ResourceInfo.isSet(flags, M_LINK);
	}

	
See Also:
isPhantom.isPhantom()/**
	 * @see org.eclipse.core.resources.IResourceProxy#isPhantom()
	 */
	@Override
	public boolean isPhantom() {
		int flags = info.getFlags();
		return flags != NULL_FLAG && ResourceInfo.isSet(flags, M_PHANTOM);
	}

	
See Also:
isTeamPrivateMember.isTeamPrivateMember()/**
	 * @see org.eclipse.core.resources.IResourceProxy#isTeamPrivateMember()
	 */
	@Override
	public boolean isTeamPrivateMember() {
		int flags = info.getFlags();
		return flags != NULL_FLAG && ResourceInfo.isSet(flags, M_TEAM_PRIVATE_MEMBER);
	}

	
See Also:
isHidden.isHidden()/**
	 * @see org.eclipse.core.resources.IResourceProxy#isHidden()
	 */
	@Override
	public boolean isHidden() {
		int flags = info.getFlags();
		return flags != NULL_FLAG && ResourceInfo.isSet(flags, M_HIDDEN);
	}

	
See Also:
requestFullPath.requestFullPath()/**
	 * @see org.eclipse.core.resources.IResourceProxy#requestFullPath()
	 */
	@Override
	public IPath requestFullPath() {
		if (fullPath == null)
			fullPath = requestor.requestPath();
		return fullPath;
	}

	
See Also:
requestResource.requestResource()/**
	 * @see org.eclipse.core.resources.IResourceProxy#requestResource()
	 */
	@Override
	public IResource requestResource() {
		if (resource == null)
			resource = workspace.newResource(requestFullPath(), info.getType());
		return resource;
	}

	protected void reset() {
		fullPath = null;
		resource = null;
	}
}