Module jdk.dynalink

Package jdk.dynalink

Class SecureLookupSupplier

java.lang.Object

jdk.dynalink.SecureLookupSupplier

Direct Known Subclasses:

CallSiteDescriptor

public class SecureLookupSupplier
extends Object

Provides security-checked access to a MethodHandles.Lookup object. See getLookup() for details.

Since:

9

Field Summary

Fields

Modifier and Type	Field	Description
static final String	GET_LOOKUP_PERMISSION_NAME	The name of a runtime permission required to successfully invoke the getLookup() method.

Constructor Summary

Constructors

Constructor	Description
SecureLookupSupplier(MethodHandles.Lookup lookup)	Creates a new secure lookup supplier, securing the passed lookup.

Method Summary

Modifier and Type	Method	Description
final MethodHandles.Lookup	getLookup()	Returns the lookup secured by this SecureLookupSupplier.
protected final MethodHandles.Lookup	getLookupPrivileged()	Returns the value of getLookup() without a security check.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

GET_LOOKUP_PERMISSION_NAME

public static final String GET_LOOKUP_PERMISSION_NAME

The name of a runtime permission required to successfully invoke the getLookup() method.

See Also:

• Constant Field Values

Constructor Details

SecureLookupSupplier

public SecureLookupSupplier(MethodHandles.Lookup lookup)

Creates a new secure lookup supplier, securing the passed lookup.

Parameters:

lookup - the lookup to secure. Can not be null.

Throws:

NullPointerException - if null is passed.

Method Details

getLookup

public final MethodHandles.Lookup getLookup()

Returns the lookup secured by this SecureLookupSupplier.

Returns:

the lookup secured by this SecureLookupSupplier.

Throws:

SecurityException - if the secured lookup isn't the MethodHandles.publicLookup(), and a security manager is present, and a check for RuntimePermission("dynalink.getLookup") fails.

getLookupPrivileged

protected final MethodHandles.Lookup getLookupPrivileged()

Returns the value of getLookup() without a security check. Can be used by subclasses to access the lookup quickly.

Returns:

same as returned value of getLookup().