Package org.restlet.engine.local

Source Code of org.restlet.engine.local.FileEntity

/**
* Copyright 2005-2011 Noelios Technologies.
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: LGPL 3.0 or LGPL 2.1 or CDDL 1.0 or EPL 1.0 (the
* "Licenses"). You can select the license that you prefer but you may not use
* this file except in compliance with one of these Licenses.
*
* You can obtain a copy of the LGPL 3.0 license at
* http://www.opensource.org/licenses/lgpl-3.0.html
*
* You can obtain a copy of the LGPL 2.1 license at
* http://www.opensource.org/licenses/lgpl-2.1.php
*
* You can obtain a copy of the CDDL 1.0 license at
* http://www.opensource.org/licenses/cddl1.php
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://www.noelios.com/products/restlet-engine
*
* Restlet is a registered trademark of Noelios Technologies.
*/

package org.restlet.engine.local;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.restlet.data.MediaType;
import org.restlet.representation.FileRepresentation;
import org.restlet.representation.Representation;
import org.restlet.service.MetadataService;

/**
* Local entity based on a regular {@link File}.
*/
public class FileEntity extends Entity {

    /** The underlying regular file. */
    private final File file;

    /**
     * Constructor.
     *
     * @param file
     *            The underlying file.
     * @param metadataService
     *            The metadata service to use.
     */
    public FileEntity(File file, MetadataService metadataService) {
        super(metadataService);
        this.file = file;
    }

    @Override
    public boolean exists() {
        return getFile().exists();
    }

    @Override
    public List<Entity> getChildren() {
        List<Entity> result = null;

        if (isDirectory()) {
            result = new ArrayList<Entity>();

            for (File f : getFile().listFiles()) {
                result.add(new FileEntity(f, getMetadataService()));
            }
        }

        return result;
    }

    /**
     * Returns the underlying regular file.
     *
     * @return The underlying regular file.
     */
    public File getFile() {
        return file;
    }

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

    @Override
    public Entity getParent() {
        File parentFile = getFile().getParentFile();
        return (parentFile == null) ? null : new FileEntity(parentFile,
                getMetadataService());
    }

    @Override
    public Representation getRepresentation(MediaType defaultMediaType,
            int timeToLive) {
        return new FileRepresentation(getFile(), defaultMediaType, timeToLive);
    }

    @Override
    public boolean isDirectory() {
        return getFile().isDirectory();

    }

    @Override
    public boolean isNormal() {
        return getFile().isFile();
    }
}
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