| | |
| | | import org.opends.messages.Message; |
| | | |
| | | |
| | | import java.io.IOException; |
| | | |
| | | import java.util.ArrayList; |
| | | |
| | | import org.opends.server.protocols.asn1.ASN1Element; |
| | | import org.opends.server.protocols.asn1.ASN1Enumerated; |
| | | import org.opends.server.protocols.asn1.ASN1Integer; |
| | | import org.opends.server.protocols.asn1.ASN1OctetString; |
| | | import org.opends.server.protocols.asn1.ASN1Sequence; |
| | | import org.opends.server.protocols.ldap.LDAPResultCode; |
| | | import org.opends.server.types.ByteString; |
| | | import org.opends.server.types.Control; |
| | | import org.opends.server.types.LDAPException; |
| | | import org.opends.server.protocols.asn1.*; |
| | | import static org.opends.server.protocols.asn1.ASN1Constants. |
| | | UNIVERSAL_OCTET_STRING_TYPE; |
| | | import org.opends.server.types.*; |
| | | |
| | | import static org.opends.messages.ProtocolMessages.*; |
| | | import static org.opends.server.util.ServerConstants.*; |
| | |
| | | public class VLVResponseControl |
| | | extends Control |
| | | { |
| | | /** |
| | | * ControlDecoder implentation to decode this control from a ByteString. |
| | | */ |
| | | private final static class Decoder |
| | | implements ControlDecoder<VLVResponseControl> |
| | | { |
| | | /** |
| | | * {@inheritDoc} |
| | | */ |
| | | public VLVResponseControl decode(boolean isCritical, ByteString value) |
| | | throws DirectoryException |
| | | { |
| | | if (value == null) |
| | | { |
| | | Message message = INFO_VLVRES_CONTROL_NO_VALUE.get(); |
| | | throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message); |
| | | } |
| | | |
| | | ASN1Reader reader = ASN1.getReader(value); |
| | | try |
| | | { |
| | | reader.readStartSequence(); |
| | | |
| | | int targetPosition = (int)reader.readInteger(); |
| | | int contentCount = (int)reader.readInteger(); |
| | | int vlvResultCode = (int)reader.readInteger(); |
| | | |
| | | ByteString contextID = null; |
| | | if (reader.hasNextElement()) |
| | | { |
| | | contextID = reader.readOctetString(); |
| | | } |
| | | |
| | | return new VLVResponseControl(isCritical, targetPosition, |
| | | contentCount, vlvResultCode, contextID); |
| | | } |
| | | catch (Exception e) |
| | | { |
| | | Message message = |
| | | INFO_VLVRES_CONTROL_CANNOT_DECODE_VALUE.get(getExceptionMessage(e)); |
| | | throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message, e); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * {@inheritDoc} |
| | | */ |
| | | public String getOID() |
| | | { |
| | | return OID_VLV_RESPONSE_CONTROL; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * The Control Decoder that can be used to decode this control. |
| | | */ |
| | | public static final ControlDecoder<VLVResponseControl> DECODER = |
| | | new Decoder(); |
| | | |
| | | // The context ID for this VLV response control. |
| | | private ByteString contextID; |
| | | |
| | |
| | | public VLVResponseControl(int targetPosition, int contentCount, |
| | | int vlvResultCode) |
| | | { |
| | | this(targetPosition, contentCount, vlvResultCode, null); |
| | | this(false, targetPosition, contentCount, vlvResultCode, null); |
| | | } |
| | | |
| | | |
| | |
| | | /** |
| | | * Creates a new VLV response control with the provided information. |
| | | * |
| | | * @param targetPosition The position of the target entry in the result set. |
| | | * @param contentCount The content count estimating the total number of |
| | | * entries in the result set. |
| | | * @param vlvResultCode The result code for the VLV operation. |
| | | * @param contextID The context ID for this VLV response control. |
| | | */ |
| | | public VLVResponseControl(int targetPosition, int contentCount, |
| | | int vlvResultCode, ByteString contextID) |
| | | { |
| | | super(OID_VLV_RESPONSE_CONTROL, false, |
| | | encodeControlValue(targetPosition, contentCount, vlvResultCode, |
| | | contextID)); |
| | | |
| | | this.targetPosition = targetPosition; |
| | | this.contentCount = contentCount; |
| | | this.vlvResultCode = vlvResultCode; |
| | | this.contextID = contextID; |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * Creates a new VLV response control with the provided information. |
| | | * |
| | | * @param oid The OID for the control. |
| | | * @param isCritical Indicates whether the control should be considered |
| | | * critical. |
| | | * @param controlValue The pre-encoded value for the control. |
| | | * @param targetPosition The position of the target entry in the result set. |
| | | * @param contentCount The content count estimating the total number of |
| | | * entries in the result set. |
| | | * @param vlvResultCode The result code for the VLV operation. |
| | | * @param contextID The context ID for this VLV response control. |
| | | */ |
| | | private VLVResponseControl(String oid, boolean isCritical, |
| | | ASN1OctetString controlValue, int targetPosition, |
| | | public VLVResponseControl(boolean isCritical, int targetPosition, |
| | | int contentCount, int vlvResultCode, |
| | | ByteString contextID) |
| | | { |
| | | super(oid, isCritical, controlValue); |
| | | super(OID_VLV_RESPONSE_CONTROL, isCritical); |
| | | |
| | | this.targetPosition = targetPosition; |
| | | this.contentCount = contentCount; |
| | |
| | | |
| | | |
| | | /** |
| | | * Encodes the provided information in a manner suitable for use as the value |
| | | * of this control. |
| | | * Writes this control's value to an ASN.1 writer. The value (if any) must be |
| | | * written as an ASN1OctetString. |
| | | * |
| | | * @param targetPosition The position of the target entry in the result set. |
| | | * @param contentCount The content count estimating the total number of |
| | | * entries in the result set. |
| | | * @param vlvResultCode The result code for the VLV operation. |
| | | * @param contextID The context ID for this VLV response control. |
| | | * |
| | | * @return The ASN.1 octet string containing the encoded sort order. |
| | | * @param writer The ASN.1 writer to use. |
| | | * @throws IOException If a problem occurs while writing to the stream. |
| | | */ |
| | | private static ASN1OctetString encodeControlValue(int targetPosition, |
| | | int contentCount, int vlvResultCode, |
| | | ByteString contextID) |
| | | { |
| | | ArrayList<ASN1Element> vlvElements = new ArrayList<ASN1Element>(4); |
| | | vlvElements.add(new ASN1Integer(targetPosition)); |
| | | vlvElements.add(new ASN1Integer(contentCount)); |
| | | vlvElements.add(new ASN1Enumerated(vlvResultCode)); |
| | | @Override |
| | | protected void writeValue(ASN1Writer writer) throws IOException { |
| | | writer.writeStartSequence(UNIVERSAL_OCTET_STRING_TYPE); |
| | | |
| | | writer.writeStartSequence(); |
| | | writer.writeInteger(targetPosition); |
| | | writer.writeInteger(contentCount); |
| | | writer.writeInteger(vlvResultCode); |
| | | if (contextID != null) |
| | | { |
| | | vlvElements.add(contextID.toASN1OctetString()); |
| | | writer.writeOctetString(contextID); |
| | | } |
| | | writer.writeEndSequence(); |
| | | |
| | | return new ASN1OctetString(new ASN1Sequence(vlvElements).encode()); |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * Creates a new VLV response control from the contents of the provided |
| | | * control. |
| | | * |
| | | * @param control The generic control containing the information to use to |
| | | * create this VLV response control. It must not be |
| | | * {@code null}. |
| | | * |
| | | * @return The VLV response control decoded from the provided control. |
| | | * |
| | | * @throws LDAPException If this control cannot be decoded as a valid VLV |
| | | * response control. |
| | | */ |
| | | public static VLVResponseControl decodeControl(Control control) |
| | | throws LDAPException |
| | | { |
| | | ASN1OctetString controlValue = control.getValue(); |
| | | if (controlValue == null) |
| | | { |
| | | Message message = INFO_VLVRES_CONTROL_NO_VALUE.get(); |
| | | throw new LDAPException(LDAPResultCode.PROTOCOL_ERROR, message); |
| | | } |
| | | |
| | | try |
| | | { |
| | | ASN1Sequence vlvSequence = |
| | | ASN1Sequence.decodeAsSequence(controlValue.value()); |
| | | ArrayList<ASN1Element> elements = vlvSequence.elements(); |
| | | |
| | | if ((elements.size() < 3) || (elements.size() > 4)) |
| | | { |
| | | Message message = |
| | | INFO_VLVRES_CONTROL_INVALID_ELEMENT_COUNT.get(elements.size()); |
| | | throw new LDAPException(LDAPResultCode.PROTOCOL_ERROR, message); |
| | | } |
| | | |
| | | int targetPosition = elements.get(0).decodeAsInteger().intValue(); |
| | | int contentCount = elements.get(1).decodeAsInteger().intValue(); |
| | | int vlvResultCode = elements.get(2).decodeAsEnumerated().intValue(); |
| | | |
| | | ASN1OctetString contextID = null; |
| | | if (elements.size() == 4) |
| | | { |
| | | contextID = elements.get(3).decodeAsOctetString(); |
| | | } |
| | | |
| | | return new VLVResponseControl(control.getOID(), control.isCritical(), |
| | | controlValue, targetPosition, contentCount, |
| | | vlvResultCode, contextID); |
| | | } |
| | | catch (LDAPException le) |
| | | { |
| | | throw le; |
| | | } |
| | | catch (Exception e) |
| | | { |
| | | Message message = |
| | | INFO_VLVRES_CONTROL_CANNOT_DECODE_VALUE.get(getExceptionMessage(e)); |
| | | throw new LDAPException(LDAPResultCode.PROTOCOL_ERROR, message, e); |
| | | } |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * Retrieves a string representation of this VLV request control. |
| | | * |
| | | * @return A string representation of this VLV request control. |
| | | */ |
| | | public String toString() |
| | | { |
| | | StringBuilder buffer = new StringBuilder(); |
| | | toString(buffer); |
| | | return buffer.toString(); |
| | | writer.writeEndSequence(); |
| | | } |
| | | |
| | | |
| | |
| | | * |
| | | * @param buffer The buffer to which the information should be appended. |
| | | */ |
| | | @Override |
| | | public void toString(StringBuilder buffer) |
| | | { |
| | | buffer.append("VLVResponseControl(targetPosition="); |