File.java

/*
    Copyright (C) 2016 maik.jablonski@jease.org

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package jease.cms.domain;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;

import jfix.db4o.Blob;

/**
 * A File stores all kinds of binary content as blob in the file-system.
 * Additionally the content-type is stored, so the Id of the File doesn't need
 * to reflect the stored content.
 */
public class File extends Content {

	private String contentType;
	private Blob blob = new Blob();

	public File() {
	}

	public void setContentType(String contentType) {
		this.contentType = contentType;
	}

	public String getContentType() {
		return contentType;
	}

	/**
	 * Returns true if it is valid to store given content type in object. File
	 * accepts all content types, derived implementations may limit the set of
	 * valid content types.
	 */
	public boolean isValidContentType(String contentType) {
		return true;
	}

	public java.io.File getFile() {
		return blob.getFile();
	}

	public boolean isPage() {
		return false;
	}

	public StringBuilder getFulltext() {
		return super.getFulltext().append("\n").append(getContentType())
				.append("\n").append(getFile().length());
	}

	public long getSize() {
		return super.getSize()
				+ (getContentType() != null ? getContentType().length() : 0)
				+ getFile().length();
	}

	public File copy(boolean recursive) {
		File file = (File) super.copy(recursive);
		file.setContentType(getContentType());
		if (getFile().exists()) {
			try {
				Files.copy(getFile().toPath(), file.getFile().toPath(),
						StandardCopyOption.REPLACE_EXISTING);
			} catch (IOException e) {
				throw new RuntimeException(e);
			}
		}
		return file;
	}
}