My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/java/nio/file/StandardOpenOption.java (1 of 18352 files). Show all

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java/pkg/java/nio/file/StandardOpenOption.java+125−0

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	1	+/*
	2	+ * Copyright (c) 2007, 2009, 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	+ */
	25	+
	26	+package java.nio.file;
	27	+
	28	+/**
	29	+ * Defines the standard open options.
	30	+ *
	31	+ * @since 1.7
	32	+ */
	33	+
	34	+public enum StandardOpenOption implements OpenOption {
	35	+ /**
	36	+ * Open for read access.
	37	+ */
	38	+ READ,
	39	+
	40	+ /**
	41	+ * Open for write access.
	42	+ */
	43	+ WRITE,
	44	+
	45	+ /**
	46	+ * If the file is opened for {@link #WRITE} access then bytes will be written
	47	+ * to the end of the file rather than the beginning.
	48	+ *
	49	+ * <p> If the file is opened for write access by other programs, then it
	50	+ * is file system specific if writing to the end of the file is atomic.
	51	+ */
	52	+ APPEND,
	53	+
	54	+ /**
	55	+ * If the file already exists and it is opened for {@link #WRITE}
	56	+ * access, then its length is truncated to 0. This option is ignored
	57	+ * if the file is opened only for {@link #READ} access.
	58	+ */
	59	+ TRUNCATE_EXISTING,
	60	+
	61	+ /**
	62	+ * Create a new file if it does not exist.
	63	+ * This option is ignored if the {@link #CREATE_NEW} option is also set.
	64	+ * The check for the existence of the file and the creation of the file
	65	+ * if it does not exist is atomic with respect to other file system
	66	+ * operations.
	67	+ */
	68	+ CREATE,
	69	+
	70	+ /**
	71	+ * Create a new file, failing if the file already exists.
	72	+ * The check for the existence of the file and the creation of the file
	73	+ * if it does not exist is atomic with respect to other file system
	74	+ * operations.
	75	+ */
	76	+ CREATE_NEW,
	77	+
	78	+ /**
	79	+ * Delete on close. When this option is present then the implementation
	80	+ * makes a <em>best effort</em> attempt to delete the file when closed
	81	+ * by the appropriate {@code close} method. If the {@code close} method is
	82	+ * not invoked then a <em>best effort</em> attempt is made to delete the
	83	+ * file when the Java virtual machine terminates (either normally, as
	84	+ * defined by the Java Language Specification, or where possible, abnormally).
	85	+ * This option is primarily intended for use with <em>work files</em> that
	86	+ * are used solely by a single instance of the Java virtual machine. This
	87	+ * option is not recommended for use when opening files that are open
	88	+ * concurrently by other entities. Many of the details as to when and how
	89	+ * the file is deleted are implementation specific and therefore not
	90	+ * specified. In particular, an implementation may be unable to guarantee
	91	+ * that it deletes the expected file when replaced by an attacker while the
	92	+ * file is open. Consequently, security sensitive applications should take
	93	+ * care when using this option.
	94	+ *
	95	+ * <p> For security reasons, this option may imply the {@link
	96	+ * LinkOption#NOFOLLOW_LINKS} option. In other words, if the option is present
	97	+ * when opening an existing file that is a symbolic link then it may fail
	98	+ * (by throwing {@link java.io.IOException}).
	99	+ */
	100	+ DELETE_ON_CLOSE,
	101	+
	102	+ /**
	103	+ * Sparse file. When used with the {@link #CREATE_NEW} option then this
	104	+ * option provides a <em>hint</em> that the new file will be sparse. The
	105	+ * option is ignored when the file system does not support the creation of
	106	+ * sparse files.
	107	+ */
	108	+ SPARSE,
	109	+
	110	+ /**
	111	+ * Requires that every update to the file's content or metadata be written
	112	+ * synchronously to the underlying storage device.
	113	+ *
	114	+ * @see <a href="package-summary.html#integrity">Synchronized I/O file integrity</a>
	115	+ */
	116	+ SYNC,
	117	+
	118	+ /**
	119	+ * Requires that every update to the file's content be written
	120	+ * synchronously to the underlying storage device.
	121	+ *
	122	+ * @see <a href="package-summary.html#integrity">Synchronized I/O file integrity</a>
	123	+ */
	124	+ DSYNC;
	125	+}