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Android APIs
public abstract class

PolicySpi

extends Object
java.lang.Object
   ↳ java.security.PolicySpi

Class Overview

Represents the Service Provider Interface (SPI) for java.security.Policy class.

If there is any class that wants to provide a Policy implementation, all abstract methods in this SPI should be implemented.

The detailed implementations should offer a public constructor, in which a Policy.Paramters implementation acts as an input parameter.If the Policy.Paramters input cannot by understood by the constructor, an IllegalArgumentException will be thrown.

Summary

Public Constructors
PolicySpi ()
Protected Methods
PermissionCollection engineGetPermissions ( CodeSource codesource)
Answers a PermissionCollection object containing the set of permissions granted to the specified CodeSource.
PermissionCollection engineGetPermissions ( ProtectionDomain domain)
Answers a PermissionCollection object containing the set of permissions granted to the specified ProtectionDomain.
abstract boolean engineImplies ( ProtectionDomain domain, Permission permission)
Answers if the policy has granted a Permission to a ProtectionDomain.
void engineRefresh ()
Refreshes/reloads the policy configuration.
[Expand]
Inherited Methods
From class java.lang.Object

Public Constructors

public PolicySpi ()

Added in API level 9

Protected Methods

protected PermissionCollection engineGetPermissions ( CodeSource codesource)

Added in API level 9

Answers a PermissionCollection object containing the set of permissions granted to the specified CodeSource. The default implementation of this method returns Policy.UNSUPPORTED_EMPTY_COLLECTION object. This method can be overridden if the policy implementation can return a set of permissions granted to a CodeSource.

Parameters
codesource - the CodeSource to which the returned PermissionCollection has been granted.
Returns
  • a set of permissions granted to the specified CodeSource. If this operation is supported, the returned set of permissions must be a new mutable instance and it must support heterogeneous Permission types. If this operation is not supported, Policy.UNSUPPORTED_EMPTY_COLLECTION is returned.

protected PermissionCollection engineGetPermissions ( ProtectionDomain domain)

Added in API level 9

Answers a PermissionCollection object containing the set of permissions granted to the specified ProtectionDomain. The default implementation of this method returns Policy.UNSUPPORTED_EMPTY_COLLECTION object. This method can be overridden if the policy implementation can return a set of permissions granted to a ProtectionDomain.

Parameters
domain - the ProtectionDomain to which the returned PermissionCollection has been granted.
Returns
  • a set of permissions granted to the specified ProtectionDomain. If this operation is supported, the returned set of permissions must be a new mutable instance and it must support heterogeneous Permission types. If this operation is not supported, Policy.UNSUPPORTED_EMPTY_COLLECTION is returned.

protected abstract boolean engineImplies ( ProtectionDomain domain, Permission permission)

Added in API level 9

Answers if the policy has granted a Permission to a ProtectionDomain.

Parameters
domain - the domain to check.
permission - check whether this permission is granted to the specified domain.
Returns
  • - true if the permission is granted to the domain.

protected void engineRefresh ()

Added in API level 9

Refreshes/reloads the policy configuration. The behavior of this method depends on the implementation. For example, calling refresh on a file-based policy will cause the file to be re-read. The default implementation of this method does nothing. This method should be overridden if a refresh operation is supported by the policy implementation.