jdk8-mips64-public/jaxws: src/share/jaf_classes/javax/activation/FileTypeMap.java@f3d512b73229 (annotated)

src/share/jaf_classes/javax/activation/FileTypeMap.java@f3d512b73229 (annotated)

src/share/jaf_classes/javax/activation/FileTypeMap.java

Mon, 08 Aug 2016 13:10:38 -0700

author: asaha
date: Mon, 08 Aug 2016 13:10:38 -0700
changeset 1267: f3d512b73229
parent 494: 2fcd3ddb57a6
child 637: 9c07ef4934dd
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package javax.activation;
 import java.io.File;
 import java.util.Map;
 import java.util.WeakHashMap;
 /**
  * The FileTypeMap is an abstract class that provides a data typing
  * interface for files. Implementations of this class will
  * implement the getContentType methods which will derive a content
  * type from a file name or a File object. FileTypeMaps could use any
  * scheme to determine the data type, from examining the file extension
  * of a file (like the MimetypesFileTypeMap) to opening the file and
  * trying to derive its type from the contents of the file. The
  * FileDataSource class uses the default FileTypeMap (a MimetypesFileTypeMap
  * unless changed) to determine the content type of files.
  *
  * @see javax.activation.FileTypeMap
  * @see javax.activation.FileDataSource
  * @see javax.activation.MimetypesFileTypeMap
  *
  * @since 1.6
  */
 public abstract class FileTypeMap {
     private static FileTypeMap defaultMap = null;
     private static Map<ClassLoader,FileTypeMap> map =
                                 new WeakHashMap<ClassLoader,FileTypeMap>();
     /**
      * The default constructor.
      */
     public FileTypeMap() {
         super();
     }
     /**
      * Return the type of the file object. This method should
      * always return a valid MIME type.
      *
      * @param file A file to be typed.
      * @return The content type.
      */
     abstract public String getContentType(File file);
     /**
      * Return the type of the file passed in.  This method should
      * always return a valid MIME type.
      *
      * @param filename the pathname of the file.
      * @return The content type.
      */
     abstract public String getContentType(String filename);
     /**
      * Sets the default FileTypeMap for the system. This instance
      * will be returned to callers of getDefaultFileTypeMap.
      *
      * @param fileTypeMap The FileTypeMap.
      * @exception SecurityException if the caller doesn't have permission
      *                                  to change the default
      */
     public static synchronized void setDefaultFileTypeMap(FileTypeMap fileTypeMap) {
         SecurityManager security = System.getSecurityManager();
         if (security != null) {
             try {
                 // if it's ok with the SecurityManager, it's ok with me...
                 security.checkSetFactory();
             } catch (SecurityException ex) {
                 // otherwise, we also allow it if this code and the
                 // factory come from the same (non-system) class loader (e.g.,
                 // the JAF classes were loaded with the applet classes).
                 if (FileTypeMap.class.getClassLoader() == null ||
                     FileTypeMap.class.getClassLoader() !=
                         fileTypeMap.getClass().getClassLoader())
                     throw ex;
             }
         }
         // remove any per-thread-context-class-loader FileTypeMap
         map.remove(SecuritySupport.getContextClassLoader());
         defaultMap = fileTypeMap;
     }
     /**
      * Return the default FileTypeMap for the system.
      * If setDefaultFileTypeMap was called, return
      * that instance, otherwise return an instance of
      * <code>MimetypesFileTypeMap</code>.
      *
      * @return The default FileTypeMap
      * @see javax.activation.FileTypeMap#setDefaultFileTypeMap
      */
     public static synchronized FileTypeMap getDefaultFileTypeMap() {
         if (defaultMap != null)
             return defaultMap;
         // fetch per-thread-context-class-loader default
         ClassLoader tccl = SecuritySupport.getContextClassLoader();
         FileTypeMap def = map.get(tccl);
         if (def == null) {
             def = new MimetypesFileTypeMap();
             map.put(tccl, def);
         }
         return def;
     }
 }

Mercurial > jdk8-mips64-public > jaxws / annotate

src/share/jaf_classes/javax/activation/FileTypeMap.java@f3d512b73229 (annotated)

src/share/jaf_classes/javax/activation/FileTypeMap.java