/*
* @(#)SortResponseControl.java 1.4 05/11/17
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.naming.ldap;
import java.io.IOException;
import javax.naming.*;
import javax.naming.directory.*;
import com.sun.jndi.ldap.Ber;
import com.sun.jndi.ldap.BerDecoder;
import com.sun.jndi.ldap.LdapCtx;
/**
* Indicates whether the requested sort of search results was successful or not.
* When the result code indicates success then the results have been sorted as
* requested. Otherwise the sort was unsuccessful and additional details
* regarding the cause of the error may have been provided by the server.
* <p>
* The code sample in {@link SortControl} shows how this class may be used.
* <p>
* This class implements the LDAPv3 Response Control for server-side sorting
* as defined in
* <a href="http://www.ietf.org/rfc/rfc2891.txt">RFC 2891</a>.
*
* The control's value has the following ASN.1 definition:
* <pre>
*
* SortResult ::= SEQUENCE {
* sortResult ENUMERATED {
* success (0), -- results are sorted
* operationsError (1), -- server internal failure
* timeLimitExceeded (3), -- timelimit reached before
* -- sorting was completed
* strongAuthRequired (8), -- refused to return sorted
* -- results via insecure
* -- protocol
* adminLimitExceeded (11), -- too many matching entries
* -- for the server to sort
* noSuchAttribute (16), -- unrecognized attribute
* -- type in sort key
* inappropriateMatching (18), -- unrecognized or inappro-
* -- priate matching rule in
* -- sort key
* insufficientAccessRights (50), -- refused to return sorted
* -- results to this client
* busy (51), -- too busy to process
* unwillingToPerform (53), -- unable to sort
* other (80)
* },
* attributeType [0] AttributeType OPTIONAL }
*
* </pre>
*
* @since 1.5
* @see SortControl
* @author Vincent Ryan
*/
final public class SortResponseControl extends BasicControl {
/**
* The server-side sort response control's assigned object identifier
* is 1.2.840.113556.1.4.474.
*/
public static final String OID = "1.2.840.113556.1.4.474";
private static final long serialVersionUID = 5142939176006310877L;
/**
* The sort result code.
*
* @serial
*/
private int resultCode = 0;
/**
* The ID of the attribute that caused the sort to fail.
*
* @serial
*/
private String badAttrId = null;
/**
* Constructs a control to indicate the outcome of a sort request.
*
* @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.
* @exception IOException if an error is encountered
* while decoding the control's value.
*/
public SortResponseControl(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);
resultCode = ber.parseEnumeration();
if ((ber.bytesLeft() > 0) && (ber.peekByte() == Ber.ASN_CONTEXT)) {
badAttrId = ber.parseStringWithTag(Ber.ASN_CONTEXT, true, null);
}
}
/**
* Determines if the search results have been successfully sorted.
* If an error occurred during sorting a NamingException is thrown.
*
* @return true if the search results have been sorted.
*/
public boolean isSorted() {
return (resultCode == 0); // a result code of zero indicates success
}
/**
* Retrieves the LDAP result code of the sort operation.
*
* @return The result code. A zero value indicates success.
*/
public int getResultCode() {
return resultCode;
}
/**
* Retrieves the ID of the attribute that caused the sort to fail.
* Returns null if no ID was returned by the server.
*
* @return The possibly null ID of the bad attribute.
*/
public String getAttributeID() {
return badAttrId;
}
/**
* Retrieves the NamingException appropriate for the result code.
*
* @return A NamingException or null if the result code indicates
* success.
*/
public NamingException getException() {
return LdapCtx.mapErrorCode(resultCode, null);
}
}