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package javax.naming.ldap;
import java.io.IOException;
import com.sun.jndi.ldap.Ber;
import com.sun.jndi.ldap.BerDecoder;
Indicates the end of a batch of search results.
Contains an estimate of the total number of entries in the result set
and an opaque cookie. The cookie must be supplied to the next search
operation in order to get the next batch of results.
The code sample in PagedResultsControl shows how this class may be used.
This class implements the LDAPv3 Response Control for
paged-results as defined in
RFC 2696.
The control's value has the following ASN.1 definition:
realSearchControlValue ::= SEQUENCE {
size INTEGER (0..maxInt),
-- requested page size from client
-- result set size estimate from server
cookie OCTET STRING
}
Author: Vincent Ryan See Also: Since: 1.5
/**
* Indicates the end of a batch of search results.
* Contains an estimate of the total number of entries in the result set
* and an opaque cookie. The cookie must be supplied to the next search
* operation in order to get the next batch of results.
* <p>
* The code sample in {@link PagedResultsControl} shows how this class may
* be used.
* <p>
* This class implements the LDAPv3 Response Control for
* paged-results as defined in
* <a href="http://www.ietf.org/rfc/rfc2696">RFC 2696</a>.
*
* The control's value has the following ASN.1 definition:
* <pre>
*
* realSearchControlValue ::= SEQUENCE {
* size INTEGER (0..maxInt),
* -- requested page size from client
* -- result set size estimate from server
* cookie OCTET STRING
* }
*
* </pre>
*
* @since 1.5
* @see PagedResultsControl
* @author Vincent Ryan
*/
final public class PagedResultsResponseControl extends BasicControl {
The paged-results response control's assigned object identifier
is 1.2.840.113556.1.4.319.
/**
* The paged-results response control's assigned object identifier
* is 1.2.840.113556.1.4.319.
*/
public static final String OID = "1.2.840.113556.1.4.319";
private static final long serialVersionUID = -8819778744844514666L;
An estimate of the number of entries in the search result.
@serial
/**
* An estimate of the number of entries in the search result.
*
* @serial
*/
private int resultSize;
A server-generated cookie.
@serial
/**
* A server-generated cookie.
*
* @serial
*/
private byte[] cookie;
Constructs a paged-results response control.
Params: - id – The control's object identifier string.
- criticality – The control's criticality.
- value – The control's ASN.1 BER encoded value.
It is not cloned - any changes to value
will affect the contents of the control.
Throws: - IOException – If an error was encountered while decoding
the control's value.
/**
* Constructs a paged-results response control.
*
* @param id The control's object identifier string.
* @param criticality The control's criticality.
* @param value The control's ASN.1 BER encoded value.
* It is not cloned - any changes to value
* will affect the contents of the control.
* @throws IOException If an error was encountered while decoding
* the control's value.
*/
public PagedResultsResponseControl(String id, boolean criticality,
byte[] value) throws IOException {
super(id, criticality, value);
// decode value
BerDecoder ber = new BerDecoder(value, 0, value.length);
ber.parseSeq(null);
resultSize = ber.parseInt();
cookie = ber.parseOctetString(Ber.ASN_OCTET_STR, null);
}
Retrieves (an estimate of) the number of entries in the search result.
Returns: The number of entries in the search result, or zero if unknown.
/**
* Retrieves (an estimate of) the number of entries in the search result.
*
* @return The number of entries in the search result, or zero if unknown.
*/
public int getResultSize() {
return resultSize;
}
Retrieves the server-generated cookie. Null is returned when there are
no more entries for the server to return.
Returns: A possibly null server-generated cookie. It is not cloned - any
changes to the cookie will update the control's state and thus
are not recommended.
/**
* Retrieves the server-generated cookie. Null is returned when there are
* no more entries for the server to return.
*
* @return A possibly null server-generated cookie. It is not cloned - any
* changes to the cookie will update the control's state and thus
* are not recommended.
*/
public byte[] getCookie() {
if (cookie.length == 0) {
return null;
} else {
return cookie;
}
}
}