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/*
* Copyright 2008-2017 UnboundID Corp.
* All Rights Reserved.
*/
/*
* Copyright (C) 2015-2017 UnboundID Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (GPLv2 only)
* or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
package com.unboundid.ldap.sdk.unboundidds.extensions;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.unboundid.asn1.ASN1Element;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.asn1.ASN1Sequence;
import com.unboundid.ldap.sdk.Control;
import com.unboundid.ldap.sdk.ExtendedResult;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.util.NotMutable;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import static com.unboundid.ldap.sdk.unboundidds.extensions.ExtOpMessages.*;
import static com.unboundid.util.Debug.*;
import static com.unboundid.util.StaticUtils.*;
/**
*
* NOTE: The use of interactive transactions is discouraged because it
* can create conditions which are prone to deadlocks between operations that
* may result in the cancellation of one or both operations. It is strongly
* recommended that standard LDAP transactions (which may be started using a
* {@link com.unboundid.ldap.sdk.extensions.StartTransactionExtendedRequest})
* or a multi-update extended operation be used instead. Although they cannot
* include arbitrary read operations, LDAP transactions and multi-update
* operations may be used in conjunction with the
* {@link com.unboundid.ldap.sdk.controls.AssertionRequestControl},
* {@link com.unboundid.ldap.sdk.controls.PreReadRequestControl}, and
* {@link com.unboundid.ldap.sdk.controls.PostReadRequestControl} to
* incorporate some read capability into a transaction, and in conjunction
* with the {@link com.unboundid.ldap.sdk.ModificationType#INCREMENT}
* modification type to increment integer values without the need to know the
* precise value before or after the operation (although the pre-read and/or
* post-read controls may be used to determine that).
*
* This class implements a data structure for storing the information from an
* extended result for the start interactive transaction extended request. It
* is able to decode a generic extended result to extract the transaction ID and
* base DNs that it may contain, if the operation was successful.
*
*
* NOTE: This class is part of the Commercial Edition of the UnboundID
* LDAP SDK for Java. It is not available for use in applications that
* include only the Standard Edition of the LDAP SDK, and is not supported for
* use in conjunction with non-UnboundID products.
*
*
* See the documentation for the
* {@link StartInteractiveTransactionExtendedRequest} class for an example that
* demonstrates the use of interactive transactions.
*/
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class StartInteractiveTransactionExtendedResult
extends ExtendedResult
{
/**
* The BER type for the {@code txnID} element of the response.
*/
private static final byte TYPE_TXN_ID = (byte) 0x80;
/**
* The BER type for the {@code baseDNs} element of the response.
*/
private static final byte TYPE_BASE_DNS = (byte) 0xA1;
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = 4010094216900393866L;
// The transaction ID returned by the server.
private final ASN1OctetString transactionID;
// The list of base DNs returned by the server, if any.
private final List baseDNs;
/**
* Creates a new start interactive transaction extended result from the
* provided extended result.
*
* @param extendedResult The extended result to be decoded as a start
* interactive transaction extended result. It must
* not be {@code null}.
*
* @throws LDAPException If a problem occurs while attempting to decode the
* provided extended result as a start interactive
* transaction extended result.
*/
public StartInteractiveTransactionExtendedResult(
final ExtendedResult extendedResult)
throws LDAPException
{
super(extendedResult);
if (! extendedResult.hasValue())
{
transactionID = null;
baseDNs = null;
return;
}
final ASN1Sequence valueSequence;
try
{
final ASN1Element valueElement =
ASN1Element.decode(extendedResult.getValue().getValue());
valueSequence = ASN1Sequence.decodeAsSequence(valueElement);
}
catch (Exception e)
{
debugException(e);
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_START_INT_TXN_RESULT_VALUE_NOT_SEQUENCE.get(e.getMessage()), e);
}
ASN1OctetString txnID = null;
List baseDNList = null;
for (final ASN1Element element : valueSequence.elements())
{
switch (element.getType())
{
case TYPE_TXN_ID:
txnID = ASN1OctetString.decodeAsOctetString(element);
break;
case TYPE_BASE_DNS:
try
{
final ASN1Sequence baseDNsSequence =
ASN1Sequence.decodeAsSequence(element);
final ArrayList dnList =
new ArrayList(baseDNsSequence.elements().length);
for (final ASN1Element e : baseDNsSequence.elements())
{
dnList.add(ASN1OctetString.decodeAsOctetString(e).stringValue());
}
baseDNList = Collections.unmodifiableList(dnList);
}
catch (Exception e)
{
debugException(e);
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_START_INT_TXN_RESULT_BASE_DNS_NOT_SEQUENCE.get(
e.getMessage()), e);
}
break;
default:
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_START_INT_TXN_RESULT_INVALID_ELEMENT.get(
toHex(element.getType())));
}
}
transactionID = txnID;
baseDNs = baseDNList;
if (transactionID == null)
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_START_INT_TXN_RESULT_NO_TXN_ID.get());
}
}
/**
* Creates a new start interactive transaction extended result with the
* provided information.
*
* @param messageID The message ID for the LDAP message that is
* associated with this LDAP result.
* @param resultCode The result code from the response.
* @param diagnosticMessage The diagnostic message from the response, if
* available.
* @param matchedDN The matched DN from the response, if available.
* @param referralURLs The set of referral URLs from the response, if
* available.
* @param transactionID The transaction ID for this response, if
* available.
* @param baseDNs The list of base DNs for this response, if
* available.
* @param responseControls The set of controls from the response, if
* available.
*/
public StartInteractiveTransactionExtendedResult(final int messageID,
final ResultCode resultCode, final String diagnosticMessage,
final String matchedDN, final String[] referralURLs,
final ASN1OctetString transactionID, final List baseDNs,
final Control[] responseControls)
{
super(messageID, resultCode, diagnosticMessage, matchedDN, referralURLs,
null, encodeValue(transactionID, baseDNs), responseControls);
this.transactionID = transactionID;
if (baseDNs == null)
{
this.baseDNs = null;
}
else
{
this.baseDNs =
Collections.unmodifiableList(new ArrayList(baseDNs));
}
}
/**
* Encodes the provided information into an ASN.1 octet string suitable for
* use as the value of this extended result.
*
* @param transactionID The transaction ID for this response, if available.
* @param baseDNs The list of base DNs for this response, if
* available.
*
* @return The ASN.1 octet string containing the encoded value, or
* {@code null} if no value should be used.
*/
private static ASN1OctetString encodeValue(
final ASN1OctetString transactionID,
final List baseDNs)
{
if ((transactionID == null) && (baseDNs == null))
{
return null;
}
final ArrayList elements = new ArrayList(2);
if (transactionID != null)
{
elements.add(new ASN1OctetString(TYPE_TXN_ID, transactionID.getValue()));
}
if ((baseDNs != null) && (! baseDNs.isEmpty()))
{
final ArrayList baseDNElements =
new ArrayList(baseDNs.size());
for (final String s : baseDNs)
{
baseDNElements.add(new ASN1OctetString(s));
}
elements.add(new ASN1Sequence(TYPE_BASE_DNS, baseDNElements));
}
return new ASN1OctetString(new ASN1Sequence(elements).encode());
}
/**
* Retrieves the transaction ID for this start interactive transaction
* extended result, if available.
*
* @return The transaction ID for this start interactive transaction extended
* result, or {@code null} if none was provided.
*/
public ASN1OctetString getTransactionID()
{
return transactionID;
}
/**
* Retrieves the list of base DNs for this start interactive transaction
* extended result, if available.
*
* @return The list of base DNs for this start interactive transaction
* extended result, or {@code null} if no base DN list was provided.
*/
public List getBaseDNs()
{
return baseDNs;
}
/**
* {@inheritDoc}
*/
@Override()
public String getExtendedResultName()
{
return INFO_EXTENDED_RESULT_NAME_START_INTERACTIVE_TXN.get();
}
/**
* {@inheritDoc}
*/
@Override()
public void toString(final StringBuilder buffer)
{
buffer.append("StartInteractiveTransactionExtendedResult(resultCode=");
buffer.append(getResultCode());
final int messageID = getMessageID();
if (messageID >= 0)
{
buffer.append(", messageID=");
buffer.append(messageID);
}
if (transactionID != null)
{
buffer.append(", transactionID='");
buffer.append(transactionID.stringValue());
buffer.append('\'');
}
if (baseDNs != null)
{
buffer.append(", baseDNs={");
for (int i=0; i < baseDNs.size(); i++)
{
if (i > 0)
{
buffer.append(", ");
}
buffer.append('\'');
buffer.append(baseDNs.get(i));
buffer.append('\'');
}
buffer.append('}');
}
final String diagnosticMessage = getDiagnosticMessage();
if (diagnosticMessage != null)
{
buffer.append(", diagnosticMessage='");
buffer.append(diagnosticMessage);
buffer.append('\'');
}
final String matchedDN = getMatchedDN();
if (matchedDN != null)
{
buffer.append(", matchedDN='");
buffer.append(matchedDN);
buffer.append('\'');
}
final String[] referralURLs = getReferralURLs();
if (referralURLs.length > 0)
{
buffer.append(", referralURLs={");
for (int i=0; i < referralURLs.length; i++)
{
if (i > 0)
{
buffer.append(", ");
}
buffer.append('\'');
buffer.append(referralURLs[i]);
buffer.append('\'');
}
buffer.append('}');
}
final Control[] responseControls = getResponseControls();
if (responseControls.length > 0)
{
buffer.append(", responseControls={");
for (int i=0; i < responseControls.length; i++)
{
if (i > 0)
{
buffer.append(", ");
}
buffer.append(responseControls[i]);
}
buffer.append('}');
}
buffer.append(')');
}
}
