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Added in API level 9

PolicySpi

public abstract class PolicySpi
extends Object

java.lang.Object
   ↳ java.security.PolicySpi


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.

Inherited methods

From class java.lang.Object

Public constructors

PolicySpi

Added in API level 9
PolicySpi ()

Protected methods

engineGetPermissions

Added in API level 9
PermissionCollection engineGetPermissions (CodeSource codesource)

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 CodeSource: - the CodeSource to which the returned PermissionCollection has been granted.
Returns
PermissionCollection 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.

engineGetPermissions

Added in API level 9
PermissionCollection engineGetPermissions (ProtectionDomain domain)

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 ProtectionDomain: - the ProtectionDomain to which the returned PermissionCollection has been granted.
Returns
PermissionCollection 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.

engineImplies

Added in API level 9
boolean engineImplies (ProtectionDomain domain, 
                Permission permission)

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

Parameters
domain ProtectionDomain: - the domain to check.
permission Permission: - check whether this permission is granted to the specified domain.
Returns
boolean - true if the permission is granted to the domain.

engineRefresh

Added in API level 9
void engineRefresh ()

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.

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