Mercurial > hg > release > icedtea7-forest-2.0 > jaxws
view sources/jaxws_src/src/com/sun/xml/internal/org/jvnet/mimepull/DataFile.java @ 282:78c175236707
Update to jdk7-jaxws-2009_09_28.zip
author | andrew |
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date | Thu, 22 Sep 2011 02:57:13 +0100 |
parents | |
children | 4f4a2cd249d8 |
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/* * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Sun designates this * particular file as subject to the "Classpath" exception as provided * by Sun in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. */ package com.sun.xml.internal.org.jvnet.mimepull; import java.io.*; /** * Use {@link RandomAccessFile} for concurrent access of read * and write partial part's content. * * @author Kohsuke Kawaguchi * @author Jitendra Kotamraju */ final class DataFile { private WeakDataFile weak; private long writePointer; DataFile(File file) { writePointer=0; weak = new WeakDataFile(this, file); } /** * */ void close() { weak.close(); } /** * Read data from the given file pointer position. * * @param pointer read position * @param buf that needs to be filled * @param offset the start offset of the data. * @param length of data that needs to be read */ synchronized void read(long pointer, byte[] buf, int offset, int length ) { weak.read(pointer, buf, offset, length); } void renameTo(File f) { weak.renameTo(f); } /** * Write data to the file * * @param data that needs to written to a file * @param offset start offset in the data * @param length no bytes to write * @return file pointer before the write operation(or at which the * data is written) */ synchronized long writeTo(byte[] data, int offset, int length) { long temp = writePointer; writePointer = weak.writeTo(writePointer, data, offset, length); return temp; } }