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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use
Java API for communicating with LDAP directory servers and performing
related tasks like reading and writing LDIF, encoding and decoding data
using base64 and ASN.1 BER, and performing secure communication. This
package contains the Standard Edition of the LDAP SDK, which is a
complete, general-purpose library for communicating with LDAPv3 directory
servers.
/*
* Copyright 2009-2022 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright 2009-2022 Ping Identity Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Copyright (C) 2009-2022 Ping Identity Corporation
*
* 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.controls;
import java.io.Serializable;
import java.util.ArrayList;
import com.unboundid.asn1.ASN1Boolean;
import com.unboundid.asn1.ASN1Element;
import com.unboundid.asn1.ASN1Enumerated;
import com.unboundid.asn1.ASN1Integer;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.asn1.ASN1Sequence;
import com.unboundid.ldap.sdk.DereferencePolicy;
import com.unboundid.ldap.sdk.Filter;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.ldap.sdk.SearchScope;
import com.unboundid.util.Debug;
import com.unboundid.util.NotMutable;
import com.unboundid.util.NotNull;
import com.unboundid.util.Nullable;
import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import com.unboundid.util.Validator;
import static com.unboundid.ldap.sdk.unboundidds.controls.ControlMessages.*;
/**
* This class contains a data structure which provides information about the
* value of an LDAP join request control, which may or may not include a nested
* join. See the class-level documentation for the {@link JoinRequestControl}
* class for additional information and an example demonstrating its use.
*
*
* NOTE: This class, and other classes within the
* {@code com.unboundid.ldap.sdk.unboundidds} package structure, are only
* supported for use against Ping Identity, UnboundID, and
* Nokia/Alcatel-Lucent 8661 server products. These classes provide support
* for proprietary functionality or for external specifications that are not
* considered stable or mature enough to be guaranteed to work in an
* interoperable way with other types of LDAP servers.
*
*
* The value of the join request control is encoded as follows:
*
* LDAPJoin ::= SEQUENCE {
* joinRule JoinRule,
* baseObject CHOICE {
* useSearchBaseDN [0] NULL,
* useSourceEntryDN [1] NULL,
* useCustomBaseDN [2] LDAPDN,
* ... },
* scope [0] ENUMERATED {
* baseObject (0),
* singleLevel (1),
* wholeSubtree (2),
* subordinateSubtree (3),
* ... } OPTIONAL,
* derefAliases [1] ENUMERATED {
* neverDerefAliases (0),
* derefInSearching (1),
* derefFindingBaseObj (2),
* derefAlways (3),
* ... } OPTIONAL,
* sizeLimit [2] INTEGER (0 .. maxInt) OPTIONAL,
* filter [3] Filter OPTIONAL,
* attributes [4] AttributeSelection OPTIONAL,
* requireMatch [5] BOOLEAN DEFAULT FALSE,
* nestedJoin [6] LDAPJoin OPTIONAL,
* ... }
*
*/
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class JoinRequestValue
implements Serializable
{
/**
* The set of attributes that will be used if all user attributes should be
* requested.
*/
@NotNull private static final String[] NO_ATTRIBUTES = StaticUtils.NO_STRINGS;
/**
* The BER type to use for the scope element.
*/
private static final byte TYPE_SCOPE = (byte) 0x80;
/**
* The BER type to use for the dereference policy element.
*/
private static final byte TYPE_DEREF_POLICY = (byte) 0x81;
/**
* The BER type to use for the size limit element.
*/
private static final byte TYPE_SIZE_LIMIT = (byte) 0x82;
/**
* The BER type to use for the filter element.
*/
private static final byte TYPE_FILTER = (byte) 0xA3;
/**
* The BER type to use for the attributes element.
*/
private static final byte TYPE_ATTRIBUTES = (byte) 0xA4;
/**
* The BER type to use for the require match element.
*/
private static final byte TYPE_REQUIRE_MATCH = (byte) 0x85;
/**
* The BER type to use for the nested join element.
*/
private static final byte TYPE_NESTED_JOIN = (byte) 0xA6;
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = 4675881185117657177L;
// Indicates whether to require at least one entry to match the join
// criteria for the entry to be returned.
private final boolean requireMatch;
// The dereference policy for this join request value.
@Nullable private final DereferencePolicy derefPolicy;
// The filter for this join request value.
@Nullable private final Filter filter;
// The client-requested size limit for this join request value.
@Nullable private final Integer sizeLimit;
// The base DN to use for this join request value.
@NotNull private final JoinBaseDN baseDN;
// The nested join criteria for this join request value.
@Nullable private final JoinRequestValue nestedJoin;
// The join rule for this join request value.
@NotNull private final JoinRule joinRule;
// The scope for this join request value.
@Nullable private final SearchScope scope;
// The set of attributes to include in entries matching the join criteria.
@NotNull private final String[] attributes;
/**
* Creates a new join request value with the provided information.
*
* @param joinRule The join rule for this join request value. It must
* not be {@code null}.
* @param baseDN The base DN for this join request value. It must
* not be {@code null}.
* @param scope The scope for this join request value. It may be
* {@code null} if the scope from the associated search
* request should be used.
* @param derefPolicy The alias dereferencing policy for this join request
* value. It may be {@code null} if the dereference
* policy from the associated search request should be
* used.
* @param sizeLimit The client-requested maximum number of entries to
* allow when performing the join. It may be
* {@code null} if the size limit from the associated
* search request should be used. Note that the server
* will impose a maximum size limit of 1000 entries, so
* size limit values greater than 1000 will be limited
* to 1000.
* @param filter An additional filter which must match target entries
* for them to be included in the join. This may be
* {@code null} if no additional filter is required and
* the join rule should be the only criteria used when
* performing the join.
* @param attributes The set of attributes that the client wishes to be
* included in joined entries. It may be {@code null}
* or empty to indicate that all user attributes should
* be included. It may also contain special values like
* "1.1" to indicate that no attributes should be
* included, "*" to indicate that all user attributes
* should be included, "+" to indicate that all
* operational attributes should be included, or
* "@ocname" to indicate that all required and optional
* attributes associated with the "ocname" object class
* should be included.
* @param requireMatch Indicates whether a search result entry is required
* to be joined with at least one entry for it to be
* returned to the client.
* @param nestedJoin A set of join criteria that should be applied to
* entries joined with this join request value. It may
* be {@code null} if no nested join is needed.
*/
public JoinRequestValue(@NotNull final JoinRule joinRule,
@NotNull final JoinBaseDN baseDN,
@Nullable final SearchScope scope,
@Nullable final DereferencePolicy derefPolicy,
@Nullable final Integer sizeLimit,
@Nullable final Filter filter,
@Nullable final String[] attributes,
final boolean requireMatch,
@Nullable final JoinRequestValue nestedJoin)
{
Validator.ensureNotNull(joinRule, baseDN);
this.joinRule = joinRule;
this.baseDN = baseDN;
this.scope = scope;
this.derefPolicy = derefPolicy;
this.sizeLimit = sizeLimit;
this.filter = filter;
this.requireMatch = requireMatch;
this.nestedJoin = nestedJoin;
if (attributes == null)
{
this.attributes = NO_ATTRIBUTES;
}
else
{
this.attributes = attributes;
}
}
/**
* Retrieves the join rule for this join request value.
*
* @return The join rule for this join request value.
*/
@NotNull()
public JoinRule getJoinRule()
{
return joinRule;
}
/**
* Retrieves the join base DN for this join request value.
*
* @return The join base DN for this join request value.
*/
@NotNull()
public JoinBaseDN getBaseDN()
{
return baseDN;
}
/**
* Retrieves the scope for this join request value.
*
* @return The scope for this join request value, or {@code null} if the
* scope from the associated search request should be used.
*/
@Nullable()
public SearchScope getScope()
{
return scope;
}
/**
* Retrieves the alias dereferencing policy for this join request value.
*
* @return The alias dereferencing policy for this join request value, or
* {@code null} if the policy from the associated search request
* should be used.
*/
@Nullable()
public DereferencePolicy getDerefPolicy()
{
return derefPolicy;
}
/**
* Retrieves the client-requested size limit for this join request value.
* Note that the server will impose a maximum size limit of 1000 entries, so
* if the client-requested size limit is greater than 1000, the server will
* limit it to 1000 entries.
*
* @return The size limit for this join request value, or {@code null} if the
* size limit from the associated search request should be used.
*/
@Nullable()
public Integer getSizeLimit()
{
return sizeLimit;
}
/**
* Retrieves a filter with additional criteria that must match a target entry
* for it to be joined with a search result entry.
*
* @return A filter with additional criteria that must match a target entry
* for it to be joined with a search result entry, or {@code null} if
* no additional filter is needed.
*/
@Nullable()
public Filter getFilter()
{
return filter;
}
/**
* Retrieves the set of requested attributes that should be included in
* joined entries.
*
* @return The set of requested attributes that should be included in joined
* entries, or an empty array if all user attributes should be
* requested.
*/
@NotNull()
public String[] getAttributes()
{
return attributes;
}
/**
* Indicates whether a search result entry will be required to be joined with
* at least one entry for that entry to be returned to the client.
*
* @return {@code true} if a search result entry must be joined with at least
* one other entry for it to be returned to the client, or
* {@code false} if a search result entry may be returned even if it
* is not joined with any other entries.
*/
public boolean requireMatch()
{
return requireMatch;
}
/**
* Retrieves the nested join for this join request value, if defined.
*
* @return The nested join for this join request value, or {@code null} if
* there is no nested join for this join request value.
*/
@Nullable()
public JoinRequestValue getNestedJoin()
{
return nestedJoin;
}
/**
* Encodes this join request value as appropriate for inclusion in the join
* request control.
*
* @return The ASN.1 element containing the encoded join request value.
*/
@NotNull()
ASN1Element encode()
{
final ArrayList elements = new ArrayList<>(9);
elements.add(joinRule.encode());
elements.add(baseDN.encode());
if (scope != null)
{
elements.add(new ASN1Enumerated(TYPE_SCOPE, scope.intValue()));
}
if (derefPolicy != null)
{
elements.add(new ASN1Enumerated(TYPE_DEREF_POLICY,
derefPolicy.intValue()));
}
if (sizeLimit != null)
{
elements.add(new ASN1Integer(TYPE_SIZE_LIMIT, sizeLimit));
}
if (filter != null)
{
elements.add(new ASN1OctetString(TYPE_FILTER, filter.encode().encode()));
}
if ((attributes != null) && (attributes.length > 0))
{
final ASN1Element[] attrElements = new ASN1Element[attributes.length];
for (int i=0; i < attributes.length; i++)
{
attrElements[i] = new ASN1OctetString(attributes[i]);
}
elements.add(new ASN1Sequence(TYPE_ATTRIBUTES, attrElements));
}
if (requireMatch)
{
elements.add(new ASN1Boolean(TYPE_REQUIRE_MATCH, requireMatch));
}
if (nestedJoin != null)
{
elements.add(new ASN1OctetString(TYPE_NESTED_JOIN,
nestedJoin.encode().getValue()));
}
return new ASN1Sequence(elements);
}
/**
* Decodes the provided ASN.1 element as a join request value.
*
* @param element The element to be decoded.
*
* @return The decoded join request value.
*
* @throws LDAPException If the provided ASN.1 element cannot be decoded as
* a join request value.
*/
@NotNull()
static JoinRequestValue decode(@NotNull final ASN1Element element)
throws LDAPException
{
try
{
final ASN1Element[] elements =
ASN1Sequence.decodeAsSequence(element).elements();
final JoinRule joinRule = JoinRule.decode(elements[0]);
final JoinBaseDN baseDN = JoinBaseDN.decode(elements[1]);
SearchScope scope = null;
DereferencePolicy derefPolicy = null;
Integer sizeLimit = null;
Filter filter = null;
String[] attributes = NO_ATTRIBUTES;
boolean requireMatch = false;
JoinRequestValue nestedJoin = null;
for (int i=2; i < elements.length; i++)
{
switch (elements[i].getType())
{
case TYPE_SCOPE:
scope = SearchScope.valueOf(
ASN1Enumerated.decodeAsEnumerated(elements[i]).intValue());
break;
case TYPE_DEREF_POLICY:
derefPolicy = DereferencePolicy.valueOf(
ASN1Enumerated.decodeAsEnumerated(elements[i]).intValue());
break;
case TYPE_SIZE_LIMIT:
sizeLimit = ASN1Integer.decodeAsInteger(elements[i]).intValue();
break;
case TYPE_FILTER:
filter = Filter.decode(ASN1Element.decode(elements[i].getValue()));
break;
case TYPE_ATTRIBUTES:
final ASN1Element[] attrElements =
ASN1Sequence.decodeAsSequence(elements[i]).elements();
final ArrayList attrList =
new ArrayList<>(attrElements.length);
for (final ASN1Element e : attrElements)
{
attrList.add(
ASN1OctetString.decodeAsOctetString(e).stringValue());
}
attributes = new String[attrList.size()];
attrList.toArray(attributes);
break;
case TYPE_REQUIRE_MATCH:
requireMatch =
ASN1Boolean.decodeAsBoolean(elements[i]).booleanValue();
break;
case TYPE_NESTED_JOIN:
nestedJoin = decode(elements[i]);
break;
default:
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_JOIN_REQUEST_VALUE_INVALID_ELEMENT_TYPE.get(
elements[i].getType()));
}
}
return new JoinRequestValue(joinRule, baseDN, scope, derefPolicy,
sizeLimit, filter, attributes, requireMatch, nestedJoin);
}
catch (final Exception e)
{
Debug.debugException(e);
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_JOIN_REQUEST_VALUE_CANNOT_DECODE.get(
StaticUtils.getExceptionMessage(e)),
e);
}
}
/**
* Retrieves a string representation of this join request value.
*
* @return A string representation of this join request value.
*/
@Override()
@NotNull()
public String toString()
{
final StringBuilder buffer = new StringBuilder();
toString(buffer);
return buffer.toString();
}
/**
* Appends a string representation of this join request value to the provided
* buffer.
*
* @param buffer The buffer to which the information should be appended.
*/
public void toString(@NotNull final StringBuilder buffer)
{
buffer.append("JoinRequestValue(joinRule=");
joinRule.toString(buffer);
buffer.append(", baseDN=");
baseDN.toString(buffer);
buffer.append(", scope=");
buffer.append(String.valueOf(scope));
buffer.append(", derefPolicy=");
buffer.append(String.valueOf(derefPolicy));
buffer.append(", sizeLimit=");
buffer.append(sizeLimit);
buffer.append(", filter=");
if (filter == null)
{
buffer.append("null");
}
else
{
buffer.append('\'');
filter.toString(buffer);
buffer.append('\'');
}
buffer.append(", attributes={");
for (int i=0; i < attributes.length; i++)
{
if (i > 0)
{
buffer.append(", ");
}
buffer.append(attributes[i]);
}
buffer.append("}, requireMatch=");
buffer.append(requireMatch);
buffer.append(", nestedJoin=");
if (nestedJoin == null)
{
buffer.append("null");
}
else
{
nestedJoin.toString(buffer);
}
buffer.append(')');
}
}