java.security
Class ProtectionDomain

java.lang.Object
  |
  +--java.security.ProtectionDomain

public class ProtectionDomain

extends Object

Untamed:

Field Summary

private ClassLoader	classloader
private CodeSource	codesource
private PermissionCollection	permissions
private Principal[]	principals
private boolean	staticPermissions

Constructor Summary

ProtectionDomain(CodeSource codesource, PermissionCollection permissions)
Enabled: Creates a new ProtectionDomain with the given CodeSource and Permissions.

ProtectionDomain(CodeSource codesource, PermissionCollection permissions, ClassLoader classloader, Principal[] principals)
Enabled: Creates a new ProtectionDomain qualified by the given CodeSource, Permissions, ClassLoader and array of Principals.

Method Summary

ClassLoader	getClassLoader() Enabled: Returns the ClassLoader of this domain.
CodeSource	getCodeSource() Enabled: Returns the CodeSource of this domain.
PermissionCollection	getPermissions() Enabled: Returns the static permissions granted to this domain.
Principal[]	getPrincipals() Enabled: Returns an array of principals for this domain.
boolean	implies(Permission permission) Enabled: Check and see if this ProtectionDomain implies the permissions expressed in the Permission object.
private PermissionCollection	mergePermissions()
private boolean	seeAllp()
String	toString() Suppressed: Convert a ProtectionDomain to a String.

Methods inherited from class java.lang.Object

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

Field Detail

codesource

private CodeSource codesource

classloader

private ClassLoader classloader

principals

private Principal[] principals

permissions

private PermissionCollection permissions

staticPermissions

private boolean staticPermissions

Constructor Detail

ProtectionDomain

public ProtectionDomain(CodeSource codesource,
                        PermissionCollection permissions)

Enabled: Creates a new ProtectionDomain with the given CodeSource and Permissions. If the permissions object is not null, then setReadOnly()) will be called on the passed in Permissions object. The only permissions granted to this domain are the ones specified; the current Policy will not be consulted.

Parameters:

codesource - the codesource associated with this domain

permissions - the permissions granted to this domain

ProtectionDomain

public ProtectionDomain(CodeSource codesource,
                        PermissionCollection permissions,
                        ClassLoader classloader,
                        Principal[] principals)

Enabled: Creates a new ProtectionDomain qualified by the given CodeSource, Permissions, ClassLoader and array of Principals. If the permissions object is not null, then setReadOnly() will be called on the passed in Permissions object. The permissions granted to this domain are dynamic; they include both the static permissions passed to this constructor, and any permissions granted to this domain by the current Policy at the time a permission is checked.

This constructor is typically used by ClassLoaders and DomainCombiners which delegate to Policy to actively associate the permissions granted to this domain. This constructor affords the Policy provider the opportunity to augment the supplied PermissionCollection to reflect policy changes.

Parameters:

codesource - the CodeSource associated with this domain

permissions - the permissions granted to this domain

classloader - the ClassLoader associated with this domain

principals - the array of Principals associated with this domain

Since:

1.4

See Also:

Policy.refresh(), Policy.getPermissions(ProtectionDomain)

Method Detail

getCodeSource

public final CodeSource getCodeSource()

Enabled: Returns the CodeSource of this domain.

Returns:

the CodeSource of this domain which may be null.

Since:

1.2

getClassLoader

public final ClassLoader getClassLoader()

Enabled: Returns the ClassLoader of this domain.

Returns:

the ClassLoader of this domain which may be null.

Since:

1.4

getPrincipals

public final Principal[] getPrincipals()

Enabled: Returns an array of principals for this domain.

Returns:

returns a non-null array of principals for this domain. Changes to this array will have no impact on the ProtectionDomain.

Since:

1.4

getPermissions

public final PermissionCollection getPermissions()

Enabled: Returns the static permissions granted to this domain.

Returns:

the static set of permissions for this domain which may be null.

See Also:

Policy.refresh(), Policy.getPermissions(ProtectionDomain)

implies

public boolean implies(Permission permission)

Enabled: Check and see if this ProtectionDomain implies the permissions expressed in the Permission object.

The set of permissions evaluated is a function of whether the ProtectionDomain was constructed with a static set of permissions or it was bound to a dynamically mapped set of permissions.

If the ProtectionDomain was constructed to a statically bound PermissionCollection then the permission will only be checked against the PermissionCollection supplied at construction.

However, if the ProtectionDomain was constructed with the constructor variant which supports dynamically binding permissions, then the permission will be checked against the combination of the PermissionCollection supplied at construction and the current Policy binding.

Parameters:

permission - the Permission object to check.

Returns:

true if "permission" is implicit to this ProtectionDomain.

toString

public String toString()

Suppressed: Convert a ProtectionDomain to a String.

Overrides:

toString in class Object

Returns:

a string representation of the object.

seeAllp

private boolean seeAllp()

mergePermissions

private PermissionCollection mergePermissions()