Module jdk.dynalink
Package jdk.dynalink.linker

Class GuardingDynamicLinkerExporter

java.lang.Object
jdk.dynalink.linker.GuardingDynamicLinkerExporter
All Implemented Interfaces:
Supplier<List<GuardingDynamicLinker>>
public abstract class GuardingDynamicLinkerExporter
extends Object
implements Supplier<List<GuardingDynamicLinker>>
A class acting as a supplier of guarding dynamic linkers that can be automatically loaded by other language runtimes. Language runtimes wishing to export their own linkers should subclass this class and implement the Supplier.get() method to return a list of exported linkers and declare the subclass in /META-INF/services/jdk.dynalink.linker.GuardingDynamicLinkerExporter resource of their distribution (typically, JAR file) so that dynamic linker factories can discover them using the ServiceLoader mechanism. Note that instantiating this class is tied to a security check for the RuntimePermission("dynalink.exportLinkersAutomatically") when a security manager is present, to ensure that only trusted runtimes can automatically export their linkers into other runtimes.
See Also:
DynamicLinkerFactory.setClassLoader(ClassLoader)

  • Field Details

    • AUTOLOAD_PERMISSION_NAME

      public static final String AUTOLOAD_PERMISSION_NAME
      The name of the runtime permission for creating instances of this class. Granting this permission to a language runtime allows it to export its linkers for automatic loading into other language runtimes.
      See Also:
      Constant Field Values

  • Constructor Details

    • GuardingDynamicLinkerExporter

      protected GuardingDynamicLinkerExporter()
      Creates a new linker exporter. If there is a security manager installed checks for the RuntimePermission("dynalink.exportLinkersAutomatically") runtime permission. This ensures only language runtimes granted this permission will be allowed to export their linkers for automatic loading.
      Throws:
      SecurityException - if the necessary runtime permission is not granted.