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Summary: Ctors | Methods | Inherited Methods

# PolicyQualifierInfo

`public class PolicyQualifierInfo`
`extends Object` ``

java.lang.Object
↳ | java.security.cert.PolicyQualifierInfo

An immutable policy qualifier represented by the ASN.1 PolicyQualifierInfo structure.

The ASN.1 definition is as follows:

       PolicyQualifierInfo ::= SEQUENCE {
            policyQualifierId       PolicyQualifierId,
            qualifier               ANY DEFINED BY policyQualifierId }

A certificate policies extension, if present in an X.509 version 3 certificate, contains a sequence of one or more policy information terms, each of which consists of an object identifier (OID) and optional qualifiers. In an end-entity certificate, these policy information terms indicate the policy under which the certificate has been issued and the purposes for which the certificate may be used. In a CA certificate, these policy information terms limit the set of policies for certification paths which include this certificate.

A `Set` of `PolicyQualifierInfo` objects are returned by the `PolicyNode.getPolicyQualifiers` method. This allows applications with specific policy requirements to process and validate each policy qualifier. Applications that need to process policy qualifiers should explicitly set the `policyQualifiersRejected` flag to false (by calling the `PKIXParameters.setPolicyQualifiersRejected` method) before validating a certification path.

Note that the PKIX certification path validation algorithm specifies that any policy qualifier in a certificate policies extension that is marked critical must be processed and validated. Otherwise the certification path must be rejected. If the `policyQualifiersRejected` flag is set to false, it is up to the application to validate all policy qualifiers in this manner in order to be PKIX compliant.

Concurrent Access

All `PolicyQualifierInfo` objects must be immutable and thread-safe. That is, multiple threads may concurrently invoke the methods defined in this class on a single `PolicyQualifierInfo` object (or more than one) with no ill effects. Requiring `PolicyQualifierInfo` objects to be immutable and thread-safe allows them to be passed around to various pieces of code without worrying about coordinating access.

## Summary

### Public constructors
`PolicyQualifierInfo(byte[] encoded)` Creates an instance of `PolicyQualifierInfo` from the encoded bytes.

### Public methods
`final byte[]` | `getEncoded()` Returns the ASN.1 DER encoded form of this `PolicyQualifierInfo`.
`final byte[]` | `getPolicyQualifier()` Returns the ASN.1 DER encoded form of the `qualifier` field of this `PolicyQualifierInfo`.
`final String` | `getPolicyQualifierId()` Returns the `policyQualifierId` field of this `PolicyQualifierInfo`.
`String` | `toString()` Return a printable representation of this `PolicyQualifierInfo`.

### Inherited methods
From class `java.lang.Object`
`Object` | `clone()` Creates and returns a copy of this object.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void` | `finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>` | `getClass()` Returns the runtime class of this `Object`.
`int` | `hashCode()` Returns a hash code value for the object.
`final void` | `notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void` | `notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String` | `toString()` Returns a string representation of the object.
`final void` | `wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void` | `wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void` | `wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

## Public constructors

### PolicyQualifierInfo

    public PolicyQualifierInfo (byte[] encoded)

Creates an instance of `PolicyQualifierInfo` from the encoded bytes. The encoded byte array is copied on construction.

Parameters
`encoded` | `byte`: a byte array containing the qualifier in DER encoding

Throws
`IOException` | thrown if the byte array does not represent a valid and parsable policy qualifier

## Public methods

### getEncoded

    public final byte[] getEncoded ()

Returns the ASN.1 DER encoded form of this `PolicyQualifierInfo`.

Returns
`byte[]` | the ASN.1 DER encoded bytes (never `null`). Note that a copy is returned, so the data is cloned each time this method is called.

### getPolicyQualifier

    public final byte[] getPolicyQualifier ()

Returns the ASN.1 DER encoded form of the `qualifier` field of this `PolicyQualifierInfo`.

Returns
`byte[]` | the ASN.1 DER encoded bytes of the `qualifier` field. Note that a copy is returned, so the data is cloned each time this method is called.

### getPolicyQualifierId

    public final String getPolicyQualifierId ()

Returns the `policyQualifierId` field of this `PolicyQualifierInfo`. The `policyQualifierId` is an Object Identifier (OID) represented by a set of nonnegative integers separated by periods.

Returns
`String` | the OID (never `null`)

### toString

    public String toString ()

Return a printable representation of this `PolicyQualifierInfo`.

Returns
`String` | a `String` describing the contents of this `PolicyQualifierInfo`

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