jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/DataFile.java@f50545b5e2f1

     1 /*

     2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.xml.internal.org.jvnet.mimepull;

    28 import java.io.*;

    30 /**

    31  * Use {@link RandomAccessFile} for concurrent access of read

    32  * and write partial part's content.

    33  *

    34  * @author Kohsuke Kawaguchi

    35  * @author Jitendra Kotamraju

    36  */

    37 final class DataFile {

    38     private WeakDataFile weak;

    39     private long writePointer;

    41     DataFile(File file) {

    42         writePointer=0;

    43         weak = new WeakDataFile(this, file);

    44     }

    46     /**

    47      *

    48      */

    49     void close() {

    50         weak.close();

    51     }

    53     /**

    54      * Read data from the given file pointer position.

    55      *

    56      * @param pointer read position

    57      * @param buf that needs to be filled

    58      * @param offset the start offset of the data.

    59      * @param length of data that needs to be read

    60      */

    61     synchronized void read(long pointer, byte[] buf, int offset, int length ) {

    62         weak.read(pointer, buf, offset, length);

    63     }

    65     void renameTo(File f) {

    66         weak.renameTo(f);

    67     }

    69     /**

    70      * Write data to the file

    71      *

    72      * @param data that needs to written to a file

    73      * @param offset start offset in the data

    74      * @param length no bytes to write

    75      * @return file pointer before the write operation(or at which the

    76      *         data is written)

    77      */

    78     synchronized long writeTo(byte[] data, int offset, int length) {

    79         long temp = writePointer;

    80         writePointer = weak.writeTo(writePointer, data, offset, length);

    81         return temp;

    82     }

    84 }

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