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/*
* Copyright 2009-2019 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright (C) 2015-2019 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.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import com.unboundid.asn1.ASN1Element;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.asn1.ASN1Sequence;
import com.unboundid.ldap.sdk.Attribute;
import com.unboundid.ldap.sdk.Entry;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ReadOnlyEntry;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.util.Debug;
import com.unboundid.util.NotMutable;
import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import static com.unboundid.ldap.sdk.unboundidds.controls.ControlMessages.*;
/**
* This class provides a joined entry, which is a read-only representation of an
* entry that has been joined with a search result entry using the LDAP join
* control. 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.
*
*/
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class JoinedEntry
extends ReadOnlyEntry
{
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = -6519864521813773703L;
// The list of nested join results for this joined entry.
private final List nestedJoinResults;
/**
* Creates a new joined entry with the specified DN, attributes, and nested
* join results.
*
* @param entry The entry containing the DN and attributes to
* use for this joined entry. It must not be
* {@code null}.
* @param nestedJoinResults A list of nested join results for this joined
* entry. It may be {@code null} or empty if there
* are no nested join results.
*/
public JoinedEntry(final Entry entry,
final List nestedJoinResults)
{
this(entry.getDN(), entry.getAttributes(), nestedJoinResults);
}
/**
* Creates a new joined entry with the specified DN, attributes, and nested
* join results.
*
* @param dn The DN for this joined entry. It must not be
* {@code null}.
* @param attributes The set of attributes for this joined entry. It
* must not be {@code null}.
* @param nestedJoinResults A list of nested join results for this joined
* entry. It may be {@code null} or empty if there
* are no nested join results.
*/
public JoinedEntry(final String dn, final Collection attributes,
final List nestedJoinResults)
{
super(dn, attributes);
if (nestedJoinResults == null)
{
this.nestedJoinResults = Collections.emptyList();
}
else
{
this.nestedJoinResults = Collections.unmodifiableList(nestedJoinResults);
}
}
/**
* Encodes this joined entry to an ASN.1 element.
*
* @return An ASN.1 element containing the encoded representation of this
* joined entry.
*/
ASN1Element encode()
{
final ArrayList elements = new ArrayList<>(3);
elements.add(new ASN1OctetString(getDN()));
final ArrayList attrElements = new ArrayList<>(20);
for (final Attribute a : getAttributes())
{
attrElements.add(a.encode());
}
elements.add(new ASN1Sequence(attrElements));
if (! nestedJoinResults.isEmpty())
{
final ArrayList nestedElements =
new ArrayList<>(nestedJoinResults.size());
for (final JoinedEntry je : nestedJoinResults)
{
nestedElements.add(je.encode());
}
elements.add(new ASN1Sequence(nestedElements));
}
return new ASN1Sequence(elements);
}
/**
* Decodes the provided ASN.1 element as a joined entry.
*
* @param element The ASN.1 element to decode as a joined entry.
*
* @return The decoded joined entry.
*
* @throws LDAPException If a problem occurs while attempting to decode the
* provided ASN.1 element as a joined entry.
*/
static JoinedEntry decode(final ASN1Element element)
throws LDAPException
{
try
{
final ASN1Element[] elements =
ASN1Sequence.decodeAsSequence(element).elements();
final String dn =
ASN1OctetString.decodeAsOctetString(elements[0]).stringValue();
final ASN1Element[] attrElements =
ASN1Sequence.decodeAsSequence(elements[1]).elements();
final ArrayList attrs = new ArrayList<>(attrElements.length);
for (final ASN1Element e : attrElements)
{
attrs.add(Attribute.decode(ASN1Sequence.decodeAsSequence(e)));
}
final ArrayList nestedJoinResults;
if (elements.length == 3)
{
final ASN1Element[] nestedElements =
ASN1Sequence.decodeAsSequence(elements[2]).elements();
nestedJoinResults = new ArrayList<>(nestedElements.length);
for (final ASN1Element e : nestedElements)
{
nestedJoinResults.add(decode(e));
}
}
else
{
nestedJoinResults = new ArrayList<>(0);
}
return new JoinedEntry(dn, attrs, nestedJoinResults);
}
catch (final Exception e)
{
Debug.debugException(e);
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_JOINED_ENTRY_CANNOT_DECODE.get(
StaticUtils.getExceptionMessage(e)),
e);
}
}
/**
* Retrieves the list of nested join results for this joined entry.
*
* @return The list of nested join results for this joined entry, or an
* empty list if there are none.
*/
public List getNestedJoinResults()
{
return nestedJoinResults;
}
/**
* Appends a string representation of this joined entry to the provided
* buffer.
*
* @param buffer The buffer to which the information should be appended.
*/
@Override()
public void toString(final StringBuilder buffer)
{
buffer.append("JoinedEntry(dn='");
buffer.append(getDN());
buffer.append("', attributes={");
final Iterator attrIterator = getAttributes().iterator();
while (attrIterator.hasNext())
{
attrIterator.next().toString(buffer);
if (attrIterator.hasNext())
{
buffer.append(", ");
}
}
buffer.append("}, nestedJoinResults={");
final Iterator entryIterator = nestedJoinResults.iterator();
while (entryIterator.hasNext())
{
entryIterator.next().toString(buffer);
if (entryIterator.hasNext())
{
buffer.append(", ");
}
}
buffer.append("})");
}
}
