geronimo-spec-activation/src/java/javax/activation/FileDataSource.java

/**
 *
 * Copyright 2003-2004 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package javax.activation;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * @version $Rev$ $Date$
 */
public class FileDataSource implements DataSource {
    private final File file;
    private FileTypeMap fileTypeMap;

    /**
     * Creates a FileDataSource from a File object
     */
    public FileDataSource(File file) {
        this.file = file;
    }

    /**
     * Creates a FileDataSource from the specified path name
     */
    public FileDataSource(String name) {
        this(new File(name));
    }

    /**
     * Return the InputStream obtained from the data source
     */
    public InputStream getInputStream() throws IOException {
        return new FileInputStream(file);
    }

    /**
     * Return the OutputStream obtained from the data source
     */
    public OutputStream getOutputStream() throws IOException {
        return new FileOutputStream(file);
    }

    /**
     * Returns the content type of the data source
     */
    public String getContentType() {
        if (fileTypeMap == null) {
            return FileTypeMap.getDefaultFileTypeMap().getContentType(file);
        } else {
            return fileTypeMap.getContentType(file);
        }
    }

    /**
     * Returns the name of the data source object
     */
    public String getName() {
        return file.getName();
    }

    /**
     * Returns the data source file
     */
    public File getFile() {
        return file;
    }

    /**
     * Sets the FileTypeMap associated with the data source
     */
    public void setFileTypeMap(FileTypeMap map) {
        fileTypeMap = map;
    }
}