jdk Udiff src/java.base/share/classes/sun/misc/ExtensionDependency.java (original) (raw)

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@@ -43,30 +43,30 @@ import java.net.URL; import java.net.MalformedURLException; import sun.net.www.ParseUtil;

/**

• • This class checks dependent extensions a particular jar file may have
  • declared through its manifest attributes.

• • Jar file declared dependent extensions through the extension-list
  • attribute. The extension-list contains a list of keys used to
  • fetch the other attributes describing the required extension.
  • If key is the extension key declared in the extension-list
  • attribute, the following describing attribute can be found in

• • the manifest :
• • key-Extension-Name: (Specification package name)
• • key-Specification-Version: (Specification-Version)
• • key-Implementation-Version: (Implementation-Version)
• • key-Implementation-Vendor-Id: (Imlementation-Vendor-Id)
• • key-Implementation-Version: (Implementation version)
• • key-Implementation-URL: (URL to download the requested extension)

• • the manifest:
• • key-Extension-Name: (Specification package name)

• • @deprecated this class will be removed in a future release.
  • @author Jerome Dochez */ @Deprecated

@@ -74,14 +74,13 @@

 /* Callbak interfaces to delegate installation of missing extensions */
 private static Vector<ExtensionInstallationProvider> providers;

 /**

• * <p>
  * Register an ExtensionInstallationProvider. The provider is responsible
  * for handling the installation (upgrade) of any missing extensions.

• * </p>

• *
  * @param eip ExtensionInstallationProvider implementation
  */

  public synchronized static void addExtensionInstallationProvider (ExtensionInstallationProvider eip) {

@@ -90,25 +89,22 @@ } providers.add(eip); }

 /**

• * <p>
  * Unregister a previously installed installation provider

• * </p>
  */

  public synchronized static void removeExtensionInstallationProvider (ExtensionInstallationProvider eip) { providers.remove(eip); }

  /**

• * <p>
  * Checks the dependencies of the jar file on installed extension.

• * </p>

• * @param jarFile containing the attriutes declaring the dependencies

• *

• * @param jar containing the attributes declaring the dependencies
  */

  public static boolean checkExtensionsDependencies(JarFile jar) { if (providers == null) { // no need to bother, nobody is registered to install missing

@@ -180,13 +176,12 @@ return result; }

 /*

• * <p>
  * Check that a particular dependency on an extension is satisfied.

• * </p>

• *
  * @param extensionName is the key used for the attributes in the manifest
  * @param attr is the attributes of the manifest file
  *
  * @return true if the dependency is satisfied by the installed extensions
  */

@@ -202,14 +197,13 @@ ExtensionInfo reqInfo = new ExtensionInfo(extensionName, attr); return installExtension(reqInfo, null); }

 /*

• * <p>
  * Check if a particular extension is part of the currently installed
  * extensions.

• * </p>

• *
  * @param extensionName is the key for the attributes in the manifest
  * @param attr is the attributes of the manifest
  *
  * @return true if the requested extension is already installed
  */

@@ -260,15 +254,13 @@ } return false; }

 /*

• * <p>
  * Check if the requested extension described by the attributes
  * in the manifest under the key extensionName is compatible with
  * the jar file.

• * </p>
  *
  * @param extensionName key in the attribute list
  * @param attr manifest file attributes
  * @param file installed extension jar file to compare the requested
  * extension against.

@@ -335,14 +327,12 @@ } return false; }

 /*

• * <p>
  * An required extension is missing, if an ExtensionInstallationProvider is
  * registered, delegate the installation of that particular extension to it.

• * </p>
  *
  * @param reqInfo Missing extension information
  * @param instInfo Older installed version information
  *
  * @return true if the installation is successful

@@ -378,15 +368,13 @@ debug(reqInfo.name + " installation failed"); return false; }

 /**

• * <p>
  * Checks if the extension, that is specified in the extension-list in
  * the applet jar manifest, is already installed (i.e. exists in the
  * extension directory).

• * </p>
  *
  * @param extensionName extension name in the extension-list
  *
  * @return the extension if it exists in the extension directory
  */

@@ -426,13 +414,11 @@ } }); } /** - *

* @return the java.ext.dirs property as a list of directory - *

*/ private static File[] getExtDirs() { String s = java.security.AccessController.doPrivileged( new sun.security.action.GetPropertyAction("java.ext.dirs"));

@@ -454,13 +440,12 @@ debug("getExtDirs dirs.length " + dirs.length); return dirs; }

 /*

• * <p>
  * Scan the directories and return all files installed in those

• * </p>

• *
  * @param dirs list of directories to scan
  *
  * @return the list of files installed in all the directories
  */

  private static File[] getExtFiles(File[] dirs) throws IOException {

@@ -481,13 +466,11 @@ debug("getExtFiles ua.length " + ua.length); return ua; }

 /*

• * <p>
  * @return the list of installed extensions jar files

• * </p>
  */

  private File[] getInstalledExtensions() throws IOException { return AccessController.doPrivileged( new PrivilegedAction<File[]>() { public File[] run() {

@@ -501,13 +484,11 @@ } }); }

 /*

• * <p>
  * Add the newly installed jar file to the extension class loader.

• * </p>
  *
  * @param cl the current installed extension class loader
  *
  * @return true if successful
  */

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